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Natural Resource Partners L.P.
Annual Report 2015

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FY2015 Annual Report · Natural Resource Partners L.P.
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2015

Natural Resource Partners L.P.

 –  A N N UA L  R E P O R T  –

Financial Highlights

(in thousands, except per unit) 

2015 

2014 

2013 

2012 

2011

FOR THE YEAR ENDED DECEMBER 31

Total revenues and other income 

$  488,849 

$ 

399,752 

$ 

358,117 

$ 

379,147 

$  377,683

Asset impairments 

Income (loss) from operations 

Net income (loss) 

Net income excluding impairments(1) 

Basic and diluted net income (loss)  
  per limited partner unit(2) 

Net income per unit  
  excluding impairments 

Distributions per unit(2) 

Weighted average number of common 
  units outstanding(2) 

Cash from operations 

Distributable cash flow(1) 

Adjusted EBITDA(1) 

BALANCE SHEET DATA (at December 31) 

681,594 

(477,911) 

(571,720) 

109,874 

(45.75) 

8.87 

2.70 

$ 

$ 

$ 

26,209 

188,919 

108,830 

135,039 

734 

236,236 

172,078 

172,812 

2,568 

267,165 

213,355 

215,923 

161,336

104,135

54,026

215,362

$ 

$ 

$ 

9.42 

11.68 

14.00 

$ 

$ 

$ 

15.39 

15.45 

22.00 

$ 

$ 

$ 

19.70 

19.96 

22.00 

$ 

$ 

$ 

5.00

19.91

21.70

12,230 

11,326 

10,958 

10,603 

10,603

$  203,424 

$ 

210,755 

$ 

247,074 

$  271,408 

$  305,574

196,981 

292,116 

  208,366 

  306,873 

  296,106 

311,122

  294,632 

332,196 

328,116 

  326,670

Cash and cash equivalents 

$ 

51,773 

$ 

50,076 

$ 

92,513 

$ 

149,424 

$ 

214,922

Total assets 

Long-term debt 

Partners’ capital 

  1,684,075 

 2,444,724 

  1,991,856 

 1,764,672 

 1,665,649

  1,304,013 

  1,394,240 

  1,084,226 

  897,039 

  836,268

72,942 

720,155 

  616,789 

  617,447 

  644,915

(1) See “Non-GAAP Financial Measures” under Item 6 in the enclosed Form 10-K for reconciliations. 
(2)  All units outstanding, Net income (loss) per unit, Net income per unit before considering impairments and the Distributions per unit reflect the 1-for-10 reverse unit split.

Total Revenue

11

12

13

14

15

(cid:79) Coal, Hard Minerals and Other

(cid:79) VantaCore

(cid:79) Oil and gas 
(cid:79) Soda Ash

$ in millions

$378

$379

$358

$400

$489

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
To Our Unitholders

This past year was a difficult one for Natural Resource Partners. 
We faced multiple challenges on many levels, including a harsh 
market environment, regulatory uncertainty, collapsing oil 
prices, and competition from low-cost natural gas that affected 
coal consumption. Although we expect that these difficulties 
will likely increase and extend through 2016, we made the  
hard decisions in 2015 that were necessary to help us navigate 
these challenges.

AN UNCOMMONLY DIFFICULT OPERATING ENVIRONMENT 

In 2015, we were confronted with the most difficult operating environment Natural 
Resource Partners has ever experienced. The diversified nature of our asset base has 
helped mitigate the difficult energy markets, as revenues and income from our soda ash 
operations rose 20.5 percent to $49.9 million and VantaCore, our aggregates operation, 
performed well. However, these bright spots were largely overshadowed by the continued 
downturn in the thermal and metallurgical coal markets and the collapse of oil and gas 
prices over the course of the year. In addition, the difficulties in the energy markets have 
been compounded by lack of access to the capital markets for companies associated  
with coal, requiring us to dedicate substantially all of our free cash flow to deleveraging.  
In 2015, we reduced our debt by $91 million, and anticipate greater debt reduction in  
2016 in spite of an even worse commodity price environment.

A PLAN FOR THE FUTURE 

It has become increasingly clear to us that this difficult operating environment will not  
see a reversal in the coming year. Coal consumption, which fell 13 percent in 2015, mainly 
due to a corresponding 13 percent drop in consumption by the power sector, is expected 
to continue to decline, and low natural gas prices will continue to pressure coal. Oil prices 
remain caught in the middle of oversupply conditions, geopolitics, softening global economies, 
and declines in drilling, all of which contribute to unpredictable commodity prices.

“ In 2015, we were confronted with the most difficult  

operating environment Natural Resource Partners has 
ever experienced. The diversified nature of our asset 
base has helped mitigate the difficult energy markets.”

N AT U R A L R E S O U R C E  PA R T N E R S L . P. 2 0 1 5  A N N UA L R E P O R T

1

Given this climate, Natural Resource Partners in 2015 made the necessary and appropriate  
decisions to sustain the partnership during this difficult period while at the same time  
preparing NRP for the re-emergence of a more stable market in the future. To that end,  
we have focused on deleveraging, and developed a long-term plan designed to strengthen 
our balance sheet, reduce our debt, and enhance our liquidity. Our strategic goals and  
initiatives include:

•  Reduced quarterly unitholder distributions that have provided approximately  

$150 million in additional cash annually for debt repayment.

• Utilizing excess cash to pay off a substantial amount of debt by the end of 2017.

• Working with our lenders to enhance and extend our liquidity.

• Taking additional steps to reduce overhead and other costs.

• Supplementing cash generated from operations with sales of certain assets.

In 2015, we began to implement this plan. As part of our effort, in February 2016 we sold  
a portion of our oil and gas mineral rights and certain of our aggregates mineral rights  
for combined proceeds of $47.5 million. As we move through 2016, we will continue to 
evaluate additional opportunities to monetize assets and reduce leverage in order to 
ensure that NRP is well-positioned to survive these difficult energy markets.

CHALLENGES REMAIN 

As referenced above, we expect the markets to remain challenged in 2016. There will be 
more coal production cuts and mine closures as demand weakens further. The prices of  
natural gas and oil are expected to remain depressed, and we do not know when they will 
recover. We expect continued adverse impacts on our operations in 2016, but all of our  
business segments have free cash flow from operations. We are focused on doing what 
we have to do as a partnership, and on what our stakeholders expect. These are difficult 
times, but not impossible times, and we are fully prepared to do what is necessary to 
extend our maturities and repay our debt. We look forward to the time that we can again 
raise our distribution from the cash flows generated by NRP’s diversified assets.

Corbin J. Robertson, Jr. 
Chairman and Chief Executive Officer

“ As we move through 
2016, we will continue 
to evaluate additional 
opportunities to  
monetize assets  
and reduce leverage  
in order to ensure  
that NRP is well- 
positioned to survive 
these difficult  
energy markets.”

2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K/A 
Amendment No. 1

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
OF 1934

For the fiscal year ended December 31, 2015 or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934

For the transition period from                      to                     
Commission file number: 1-31465

NATURAL RESOURCE PARTNERS L.P.

(cid:11)(cid:40)(cid:91)(cid:68)(cid:70)(cid:87)(cid:3)(cid:81)(cid:68)(cid:80)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:85)(cid:72)(cid:74)(cid:76)(cid:86)(cid:87)(cid:85)(cid:68)(cid:81)(cid:87)(cid:3)(cid:68)(cid:86)(cid:3)(cid:86)(cid:83)(cid:72)(cid:70)(cid:76)(cid:73)(cid:76)(cid:72)(cid:71)(cid:3)(cid:76)(cid:81)(cid:3)(cid:76)(cid:87)(cid:86)(cid:3)(cid:70)(cid:75)(cid:68)(cid:85)(cid:87)(cid:72)(cid:85)(cid:12)

Delaware
(cid:11)(cid:54)(cid:87)(cid:68)(cid:87)(cid:72)(cid:3)(cid:82)(cid:85)(cid:3)(cid:82)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:77)(cid:88)(cid:85)(cid:76)(cid:86)(cid:71)(cid:76)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:82)(cid:73)(cid:3)(cid:76)(cid:81)(cid:70)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:82)(cid:85)(cid:3)(cid:82)(cid:85)(cid:74)(cid:68)(cid:81)(cid:76)(cid:93)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:12)

35-2164875
(cid:11)(cid:44)(cid:17)(cid:53)(cid:17)(cid:54)(cid:17)(cid:3)(cid:40)(cid:80)(cid:83)(cid:79)(cid:82)(cid:92)(cid:72)(cid:85)(cid:3)(cid:44)(cid:71)(cid:72)(cid:81)(cid:87)(cid:76)(cid:73)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:49)(cid:88)(cid:80)(cid:69)(cid:72)(cid:85)(cid:12)

1201 Louisiana Street, Suite 3400, Houston, Texas 77002
(cid:11)(cid:36)(cid:71)(cid:71)(cid:85)(cid:72)(cid:86)(cid:86)(cid:3)(cid:82)(cid:73)(cid:3)(cid:83)(cid:85)(cid:76)(cid:81)(cid:70)(cid:76)(cid:83)(cid:68)(cid:79)(cid:3)(cid:72)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:82)(cid:73)(cid:73)(cid:76)(cid:70)(cid:72)(cid:86)(cid:12)

Registrant's telephone number, including area code (713) 751-7507

Securities registered pursuant to Section 12(b) of the Act:

Title of each class
Common Units representing limited partnership interests

Name of each exchange on which registered
New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  

        No  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  

        No  

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange 
Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been 
subject to such filing requirements for the past 90 days.    Yes  

        No  

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive 
Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months 
(or for such shorter period that the registrant was required to submit and post such files).    Yes  

        No  

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained 
herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference 
in Part III of this Form 10-K or any amendment to this Form 10-K.  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting 
company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange 
Act.

Large Accelerated Filer

Accelerated Filer

Non-accelerated Filer

Smaller Reporting Company

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2)    Yes  

        No  

The aggregate market value of the common units held by non-affiliates of the registrant was approximately $295.0 million on June 30, 
2015 based on a price of $37.90 per unit, which was the closing price of the common units as reported on the New York Stock Exchange (after 
giving effect to the one-for-ten reverse unit split effective on February 17, 2016).

As of March 1, 2016, there were 12.2 million common units outstanding.                   Documents incorporated by reference: None.

 
 
Explanatory Note

We  are  filing  this Amendment  No.  1  on  Form  10-K/A  solely  to  correct  a  typographical  error  in  Ernst  & Young  LLP's  
independent registered public accountants’ report contained in Item 8. Financial Statements and Supplementary Data of our original 
Annual Report on Form 10-K filed on March 11, 2016 (the "Original Report"). There are no changes to the financial or supplemental 
information contained in Item 8. 

The typographical error was an inadvertent reference to Natural Resource Partners L.P. in regards to the amounts based on 
the report of other auditors. The amounts of Ciner Wyoming LLC, a Limited Liability Company in which Natural Resource Partners 
L.P. owns a 49% interest, were audited by Deloitte & Touche LLP and should have been referenced accordingly.

In order to comply with certain technical requirements of the SEC’s rules in connection with the filing of this amendment 
on Form 10-K/A, we are including in this amendment the complete text of Item 8. We are also including in this amendment updated 
certifications of our principal executive and principal financial officers and updated consents of Ernst & Young LLP and Deloitte 
& Touche LLP.

This Amendment No. 1 on Form 10-K/A continues to speak as of the date of our Original Report, and we have not updated 
the disclosures contained in this Amendment No. 1 to reflect any events that occurred at a date subsequent to the filing of the 
Original Report.

i

 
 
 
ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Ernst & Young LLP, independent registered public accounting firm
Report of Deloitte & Touche, LLP, independent registered public accounting firm
Consolidated Balance Sheets as of December 31, 2015 and 2014
Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2015, 2014 and 2013
Consolidated Statements of Partners’ Capital for the years ended December  31, 2015, 2014 and 2013
Consolidated Statements of Cash Flows for the years ended December 31, 2015, 2014 and 2013
Notes to Consolidated Financial Statements

Page
1
2
3
4
5
6
7

ii

 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Partners of Natural Resource Partners L.P.

We have audited the accompanying consolidated balance sheets of Natural Resource Partners L.P. as of December 31, 2015 
and 2014, and the related consolidated statements of comprehensive income (loss), partners’ capital and cash flows for each of the 
three  years  in  the  period  ended  December 31,  2015.  These  financial  statements  are  the  responsibility  of  the  Partnership’s 
management. Our responsibility is to express an opinion on these financial statements based on our audits. We did not audit the 
financial statements of Ciner Wyoming LLC (Ciner Wyoming), a Limited Liability Company in which Natural Resource Partners 
L.P. owns a 49% interest. In the consolidated financial statements Natural Resource Partners L.P.’s investment in Ciner Wyoming 
is stated at $262 million and $264 million as of December 31, 2015 and 2014, respectively, and Natural Resource Partners L.P.'s 
equity in the net income of Ciner Wyoming is stated at $50 million, $41 million and $34 million for the three years in the period 
ended December 31, 2015, respectively. Those statements were audited by other auditors whose report has been furnished to us. 
Our opinion, insofar as it relates to the amounts included for Ciner Wyoming, is based on the report of the other auditors.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and 
disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates 
made by management, as well as evaluating the overall financial statement presentation. We believe that our audits and the report 
of other auditors provide a reasonable basis for our opinion.

In our opinion, based on our audits and the report of other auditors, the financial statements referred to above present fairly, 
in all material respects, the consolidated financial position of Natural Resource Partners L.P. at December 31, 2015 and 2014, and 
the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2015, in 
conformity with U.S. generally accepted accounting principles.

The condensed consolidating balance sheets and statements of comprehensive income (loss) appearing in Note 17 of the 
consolidated financial statements have been subjected to audit procedures performed in conjunction with the audit of Natural 
Resource Partners L.P.’s consolidated financial statements.  Such information is the responsibility of the Partnership’s management.  
Our  audit  procedures  included  determining  whether  the  information  reconciles  to  the  financial  statements  or  the  underlying 
accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information.  
In our opinion, the information is fairly stated, in all material respects, in relation to the financial statements as a whole.  

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
Natural Resource Partners L.P.’s internal control over financial reporting as of December 31, 2015, based on criteria established 
in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(2013 framework), and our report dated March 11, 2016, expressed an unqualified opinion thereon.

    /s/    Ernst & Young LLP

Houston, Texas
March 11, 2016

1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Board of Managers and Members of
Ciner Wyoming LLC
Atlanta, Georgia

We have audited the accompanying balance sheets of Ciner Wyoming LLC (the "Company") as of December 31, 2015 and 
2014 and the related statements of operations and comprehensive income, members’ equity, and cash flows for each of the three 
years in the period ended December 31, 2015, and the related notes to the financial statements. These financial statements are the 
responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on 
our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of 
its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis 
for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the 
effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also 
includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the 
accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement 
presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material respects, the financial position of the Company as of 
December 31, 2015 and 2014, and the results of its operations and its cash flows for each of the three years in the period ended 
December 31, 2015, in conformity with accounting principles generally accepted in the United States of America.

/s/    DELOITTE & TOUCHE LLP

Atlanta, Georgia
March 11, 2016

2

NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED BALANCE SHEETS
(In thousands) 

ASSETS

December 31, 2015

December 31, 2014

Current assets:

Cash and cash equivalents
Accounts receivable, net
Accounts receivable—affiliates
Inventory
Prepaid expenses and other
Total current assets

Land
Plant and equipment, net
Mineral rights, net
Intangible assets, net
Equity in unconsolidated investment
Long-term contracts receivable—affiliate
Goodwill
Other assets
Other assets—affiliate
Total assets

LIABILITIES AND CAPITAL

Current liabilities:

Accounts payable
Accounts payable—affiliates
Accrued liabilities
Current portion of long-term debt, net

Total current liabilities

Deferred revenue
Deferred revenue—affiliates
Long-term debt, net
Long-term debt, net—affiliate
Other non-current liabilities
Commitments and contingencies (see Note 14)
Partners’ capital:

Common unitholders’ interest (12.2 million units outstanding)
General partner’s interest
Accumulated other comprehensive loss

Total partners’ capital

Non-controlling interest
Total capital
Total liabilities and capital

$

$

$

$

$

$

$

51,773
50,167
6,864
7,835
4,490
121,129
25,022
61,239
1,094,027
56,927
261,942
47,359
—
15,306
1,124
1,684,075

8,465
1,464
45,735
80,983
136,647
80,812
82,853
1,284,083
19,930
6,808

79,094
(606)
(2,152)
76,336
(3,394)
72,942
1,684,075

$

50,076
66,455
9,494
5,814
4,279
136,118
25,243
60,093
1,781,852
60,733
264,020
50,008
52,012
14,645
—
2,444,724

22,465
950
43,533
80,983
147,931
73,207
87,053
1,374,336
19,904
22,138

709,019
12,245
(459)
720,805
(650)
720,155
2,444,724

The accompanying notes are an integral part of these consolidated financial statements.

3

NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(In thousands, except per unit data) 

Revenues and other income:

Coal, hard mineral royalty and other
Coal, hard mineral royalty and other—affiliates
VantaCore
Oil and gas
Equity in earnings of Ciner Wyoming
Total revenues and other income

Operating expenses:

Operating and maintenance expenses
Operating and maintenance expenses—affiliates, net
Depreciation, depletion and amortization
General and administrative
General and administrative—affiliates
Asset impairments

Total operating expenses

$

For the Years Ended December 31,

2015

2014

2013

$

156,638
89,715
139,013
53,565
49,918
488,849

155,959
16,031
100,828
7,036
5,312
681,594
966,760

$

172,160
84,559
42,051
59,566
41,416
399,752

83,433
10,770
79,876
7,287
3,258
26,209
210,833

213,825
93,026
—
17,080
34,186
358,117

33,211
8,821
64,377
11,452
3,286
734
121,881

Income (loss) from operations

(477,911)

188,919

236,236

Other income (expense)
Interest expense
Interest income

Other expense, net

Net income (loss)

Net income (loss) attributable to partners:

Limited partners
General partner

Basic and diluted net income (loss) per common unit

Weighted average number of common units outstanding

Net income (loss)
Add: comprehensive income (loss) from unconsolidated investment
and other
Comprehensive income (loss)

(93,827)
18
(93,809)

(80,185)
96
(80,089)

(64,396)
238
(64,158)

$

(571,720) $

108,830

$

172,078

(559,492)
(12,228)

106,653
2,177

168,636
3,442

(45.75) $

9.42

$

15.39

12,230

11,326

10,958

(571,720) $

108,830

$

172,078

(1,693)
(573,413) $

(81)
108,749

$

65
172,143

$

$

$

The accompanying notes are an integral part of these consolidated financial statements. 

4

 
 
NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
(In thousands) 

Common Unitholders

Units

Amounts

General
Partner

Accumulated
Other
Comprehensive
Income (Loss)

Partners'
Capital
Excluding
Non-
Controlling
Interest

Non-
Controlling
Interest

Total
Capital

Balance at December 31, 2012

10,603

$ 605,019

$

10,026

$

(443) $ 614,602

$

2,845

$ 617,447

Balance at December 31, 2013

10,981

$ 606,774

$

10,069

$

(378) $ 616,465

$

324

$ 616,789

Issuance of common units

Capital contribution

Cost associated with equity
transactions
Distributions to unitholders

Distributions to non-
controlling interests
Net income

Comprehensive income from
unconsolidated investment and
other

Issuance of common units

Issuance of common units for
acquisitions
Capital contribution

Cost associated with equity
transactions
Distributions to unitholders

Distributions to non-
controlling interests
Net income

Comprehensive loss from
unconsolidated investment and
other

378

75,000

—

(293)

—

1,531

—

(241,588)

(4,930)

—

168,636

—

3,442

—

—

1,006

127,202

243

31,604

—

—

—

3,240

(4,413)

—

(158,801)

(3,241)

—

106,653

—

2,177

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

65

75,000

1,531

(293)

(246,518)

—

—

—

—

75,000

1,531

(293)

(246,518)

—

(2,521)

(2,521)

172,078

—

172,078

65

—

65

—

—

—

—

—

—

—

127,202

31,604

3,240

(4,413)

(162,042)

—

108,830

—

—

—

—

—

127,202

31,604

3,240

(4,413)

(162,042)

(974)

—

(974)

108,830

—

—

(81)

(81)

—

(81)

Balance at December 31, 2014

12,230

$ 709,019

$

12,245

$

(459) $ 720,805

$

(650) $ 720,155

Cost associated with equity
transactions
Distributions to unitholders

Distributions to non-
controlling interests
Net loss

Non-cash contributions

Comprehensive loss from
unconsolidated investment and
other

—

—

—

—

—

—

(109)

—

(70,324)

(1,434)

—

—

(559,492)

(12,228)

—

—

811

—

—

—

—

—

—

(109)

(71,758)

—

—

(109)

(71,758)

—

(2,744)

(2,744)

(571,720)

811

(1,693)

(1,693)

—

—

—

(571,720)

811

(1,693)

Balance at December 31, 2015

12,230

$

79,094

$

(606) $

(2,152) $

76,336

$

(3,394) $

72,942

The accompanying notes are an integral part of these consolidated financial statements.

5

 
 
 
 
 
 
 
 
 
NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

For the Years Ended December 31,

2015

2014

2013

$

(571,720) $

108,830

$

172,078

Net cash provided by operating activities

203,424

210,755

Cash flows from operating activities:

Net income (loss)

Adjustments to reconcile net income (loss) to net cash provided by operating activities:

Asset impairment

Depreciation, depletion and amortization

Distributions from equity earnings from unconsolidated investments

Equity earnings from unconsolidated investment

Gain on reserve swap

Other, net

Other, net—affiliates

Change in operating assets and liabilities:

Accounts receivable

Accounts receivable—affiliates

Accounts payable

Accounts payable—affiliates
Accrued liabilities

Deferred revenue

Deferred revenue—affiliates

Accrued incentive plan expenses

Other items, net

Other items, net—affiliates

Cash flows from investing activities:

Acquisition of mineral rights

Acquisition of plant and equipment and other

Proceeds from sale of plant and equipment and other

Proceeds from sale of mineral rights

Acquisition of equity interests

Acquisition of aggregates business

Return of equity and other unconsolidated investments

Return of long-term contract receivables—affiliate

Net cash used in investing activities

Cash flows from financing activities:

Proceeds from loans

Proceeds from loans—affiliate

Proceeds from issuance of common units

Capital contribution by general partner

Repayments of loans

Distributions to partners

Distributions to non-controlling interest

Debt issue costs and other

Net cash provided by (used in) financing activities

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental cash flow information:

Cash paid during the period for interest

Non-cash investing activities:

Plant, equipment and mineral rights funded with accounts payable or accrued
liabilities

Units issued for acquisition of aggregate operations

Non-cash contingent consideration on equity investments

$

$

$

681,594

100,828

46,795

(49,918)

(9,290)

(1,295)

(287)

16,486

2,630

(3,775)

514
(4,676)

7,605

(4,200)

(7,023)

(1,030)

186

26,209

79,876

43,005

(41,416)

(5,690)

1,942

—

(8,685)

(1,828)

(2,408)

559
(1,821)

2,056

15,618

(5,265)

(47)

(180)

(40,679)

(10,175)

11,024

7,096

—

—

—

2,463

(30,271)

100,000

—

—

—

(190,983)

(71,758)

(2,744)

(5,971)

(171,456)

1,697

50,076

51,773

88,493

$

$

(356,026)

(2,454)

1,006

412

—

(168,978)

3,633

1,904

617,471

19,904

127,202

3,240

(327,983)

(162,042)

(974)

(9,507)

267,311

(42,437)

92,513

50,076

76,155

$

$

5,949

$

11,879

$

—

—

31,604

—

734

64,377

24,113

(34,186)

(8,149)

(8,721)

—

2,593

2,947

1,633

(566)
7,927

4,164

15,076

2,284

(516)

1,286

247,074

(72,000)

—

—

10,929

(293,085)

—

48,833

2,558

567,020

—

75,000

1,531

(386,230)

(246,518)

(2,521)

(9,502)

(1,220)

(56,911)

149,424

92,513

55,191

3,019

—

15,000

(520,503)

(302,765)

The accompanying notes are an integral part of these consolidated financial statements.

6

 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.    Organization and Nature of Operations

Natural Resource Partners L.P. (the "Partnership"), a Delaware limited partnership, was formed in April 2002. The general 
partner of the Partnership is NRP (GP) LP ("NRP GP"), a Delaware limited partnership, whose general partner is GP Natural 
Resource Partners LLC, a Delaware limited liability company. The Partnership engages principally in the business of owning, 
operating, managing and leasing a diversified portfolio of mineral properties in the United States, including interests in coal, trona 
and soda ash, oil and gas, construction aggregates, frac sand and other natural resources.  As used in these Notes to Consolidated  
Financial Statements, the terms "NRP," "we," "us" and "our" refer to Natural Resource Partners L.P. and its subsidiaries, unless 
otherwise stated or indicated by context.

The Partnership’s coal reserves are located in the three major U.S. coal-producing regions: Appalachia, the Illinois Basin 
and the Western United States, as well as lignite reserves in the Gulf Coast region. The Partnership does not operate any coal 
mines, but leases its coal reserves to experienced mine operators under long-term leases that grant the operators the right to mine 
and sell its reserves in exchange for royalty payments. The Partnership also owns and manages infrastructure assets that generate 
additional revenues, primarily in the Illinois Basin.

The Partnership owns or leases aggregates and industrial minerals located in a number of states across the country. The 
Partnership derives a small percentage of its aggregates and industrial mineral revenues by leasing its owned reserves to third party 
operators who mine and sell the reserves in exchange for royalty payments. However, the majority of the Partnership’s aggregates 
revenues come through its ownership of VantaCore Partners LLC ("VantaCore"), which was acquired in October 2014. VantaCore 
specializes in the construction materials industry and operates four hard rock quarries, six sand and gravel plants, two asphalt 
plants and two marine terminals. VantaCore’s current operations are located in Pennsylvania, West Virginia, Tennessee, Kentucky 
and Louisiana.

The Partnership owns a 49% non-controlling equity interest in Ciner Wyoming LLC ("Ciner Wyoming"), a trona ore mining 
operation and soda ash refinery in the Green River Basin, Wyoming. Ciner Resources LP, the Partnership’s operating partner, 
mines the trona, processes it into soda ash, and distributes the soda ash both domestically and internationally into the glass and 
chemicals industries. The Partnership receives regular quarterly distributions from this business, and records income in accordance 
with the equity method of accounting.

The Partnership also owns various interests in oil and gas properties that are located in the Williston Basin, the Appalachian 
Basin, Louisiana and Oklahoma. The Partnership’s interests in the Appalachian Basin, Louisiana and Oklahoma are minerals and 
royalty interests, while in the Williston Basin the Partnership owns non-operated working interests.

The Partnership’s operations are conducted through, and its operating assets are owned by, its subsidiaries. The Partnership 
owns its subsidiaries through two wholly owned operating companies: NRP (Operating) LLC ("NRP Opco") and NRP Oil and 
Gas LLC ("NRP Oil and Gas"). NRP Oil and Gas holds the Partnership's non operated oil and gas working interests in the Williston 
Basin. All  other  operations  of  the  Partnership,  including  other  oil  and  gas  assets,  are  held  by  NRP  Opco.  NRP  GP  has  sole 
responsibility for conducting the Partnership's business and for managing its operations. Because NRP GP is a limited partnership, 
its general partner, GP Natural Resource Partners LLC, conducts its business and operations, and the board of directors and officers 
of GP Natural Resource Partners LLC makes decisions on its behalf. Robertson Coal Management LLC, a limited liability company 
wholly owned by Corbin J. Robertson, Jr., owns all of the membership interest in GP Natural Resource Partners LLC. Mr. Robertson 
is entitled to nominate all ten of the directors to the board of directors of GP Natural Resource Partners LLC. Mr. Robertson has 
delegated the right to nominate two of the directors, one of whom must be independent, to Adena Minerals, LLC, an affiliate of 
Christopher Cline.

2.    Summary of Significant Accounting Policies

Basis of Presentation

The accompanying Consolidated Financial Statements of the Partnership have been prepared in accordance with generally 
accepted accounting principles in the United States of America ("GAAP"). The consolidated financial statements include the 
accounts of Natural Resource Partners L.P. and its wholly owned subsidiaries, as well as BRP LLC ("BRP"), a joint venture with 
International Paper Company controlled by the Partnership. The Partnership has an equity investment through which it is able to 

7

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

exercise significant influence over but does not control the investee and is not the primary beneficiary of the investee’s activities 
which is accounted for using the equity method. Intercompany transactions and balances have been eliminated.

Management’s Forecast, Strategic Plan and Going Concern Analysis

While NRP has a diversified portfolio of assets and a history and continued forecast of profitable operations with positive 
operating cash flows, its operating results and credit metrics continue to be impacted by demand challenges for coal and excess 
worldwide supply of oil and gas. In particular, as described in Note 10. Debt and Debt—Affiliate, NRP Oil and Gas and NRP Opco 
have  debt  agreements  that  contain  customary  financial  covenants,  including  maintenance  covenants,  and  other  covenants.  In 
addition, NRP has issued $425 million of 9.125% Senior Notes that are governed by an indenture ("the Indenture") containing 
customary incurrence-based financial covenants and other covenants, but not maintenance covenants. The following discussion 
presents management’s going concern analysis in light of management’s outlook and strategic plan to address its debt covenant 
compliance and maturities.

(cid:47)(cid:80)(cid:67)(cid:79)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:46)(cid:50)(cid:48)

As of December 31, 2015, Opco had $290.0 million of indebtedness outstanding under its revolving credit facility due 
October 2017 (the "Opco Credit Facility") and $585.9 million outstanding under several series of Private Placement Notes (the 
"Opco Private Placement Notes") (collectively referred to as the "Opco Debt agreements"). The maximum leverage ratio under 
the Opco Debt agreements is required to be below 4.0x through March 31, 2016. Commencing with respect to the period ended 
June 30, 2016, the maximum leverage ratio reduces to 3.75x and reduces again to 3.5x commencing with respect to the period 
ended June 30, 2017. In addition, the Opco Debt agreements contain certain additional customary negative covenants that, among 
other items, restrict Opco’s ability to incur additional debt, grant liens on its assets, make investments, sell assets and engage in 
business combinations.

As of December 31, 2015, Opco was in compliance with and we forecast that Opco will continue to remain in compliance 
through December 31, 2016 with the covenants contained in its debt agreements. In addition, we believe Opco has sufficient 
liquidity to make all regularly scheduled principal and interest payments through December 31, 2016. We are currently pursuing 
or considering a number of actions including (i) dispositions of assets, (ii) actively managing our debt capital structure through a 
number  of  potential  alternatives,  including  exchange  offers  and  non-traditional  debt  financing,  (iii)  minimizing  our  capital 
expenditures,  (iv)  obtaining  waivers  or  amendments  from  our  lenders,  (v)  effectively  managing  our  working  capital  and  (vi) 
improving our cash flows from operations. While we forecast that we will be in compliance with all of the covenants under the 
Opco  Debt  agreements  through  December  31,  2016,  our  forecast  is  sensitive  to  commodity  pricing  and  counterparty  risk. 
Accordingly, management intends to pursue one or more of the alternatives discussed above in order to mitigate the effects of 
further commodity price and market deterioration which could otherwise cause us to breach financial covenants under the Opco 
Debt agreements. Breaches of the Opco Debt agreement covenants that are not waived or cured, to the extent possible, would 
result in an event of default under the Opco Debt agreements, and if such debt is accelerated by the lenders thereunder, such 
acceleration would also result in a cross-default under the Indenture.

(cid:46)(cid:50)(cid:48)(cid:0)(cid:47)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:65)(cid:83)

NRP Oil and Gas had $85.0 million outstanding under its senior secured, reserve-based revolving credit facility (the "RBL 
Facility") as of December 31, 2015. The facility is secured by a first priority lien on substantially all of NRP Oil and Gas’s assets 
and is not guaranteed by NRP or any other subsidiary of NRP.  Due to the significant and sustained decline in oil prices since the 
end of 2014, management forecasts that NRP Oil and Gas may not be able to remain in compliance with the 3.5x leverage ratio 
as required in the RBL Facility during the next 12 months.  In addition, management expects that, due to current oil and gas prices, 
the next borrowing base redetermination under the RBL Facility that is scheduled to occur in May 2016 may result in a reduction 
of the borrowing base by an amount that would exceed NRP Oil and Gas’s ability to repay principal within the required time-
frame following such redetermination. In addition, the RBL Facility requires the entity to provide annual financial statements that 
include a report from its independent registered public accounting firm with an opinion that does not contain "a "going concern" 
or like qualification or exception." Any of these events would qualify as an event of default and would provide the RBL Facility 
lenders with the ability to accelerate the debt outstanding under the RBL Facility to the extent not waived or cured. While we are 
attempting  to  take  appropriate  mitigating  actions,  there  is  no  assurance  that  any  particular  actions  with  respect  to  amending, 
refinancing, extending the maturity or curing potential defaults in the RBL Facility will be sufficient, and we may be required to 
sell some or all of the assets of NRP Oil and Gas, raise new equity capital at NRP Oil and Gas or pursue restructuring alternatives. 
As a result, we believe there is substantial doubt about the ability of NRP Oil and Gas to continue as a going concern through 

8

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

December 31, 2016. As we were in compliance with all covenants contained in the RBL Facility throughout 2015 and at December 
31, 2015, we have classified this debt as non-current in accordance with its terms.

An event of default under the RBL facility and subsequent acceleration of that debt by the lenders thereunder would not 
result in a cross-default under the Indenture. NRP Oil and Gas is designated as an "Unrestricted Subsidiary" for purposes of the 
Indenture, which prevents an event of default under the RBL Facility and subsequent acceleration of that debt from triggering an 
event of default under the Indenture.  In addition, there are no cross-defaults under the Opco Debt agreements as a result of a 
default under the RBL Facility.  As a result, there would be no default or acceleration of indebtedness under the Indenture or under 
the Opco Debt agreements in the event NRP Oil and Gas is in default under its RBL Facility.

Recasting of Certain Prior Period Information

Due to the acquisitions that diversified our natural resource asset base, effective for the quarter ended December 31, 2015, 
management revised the Partnership's operating segments to align with its management structure and organizational responsibilities 
and revised the information that its chief operating decision maker regularly reviews for purposes of allocating resources and 
assessing performance. As a result, effective for the quarter ended December 31, 2015, we report our financial performance based 
on new segments as described in "Note 3. Segment Information". We recast certain prior period amounts to conform to the way 
we internally manage and monitor segment performance. This change had no impact on the Partnership's consolidated financial 
position, net income (loss) or cash flows. In addition, certain reclassifications have been made to prior period amounts to conform 
to the current period financial statement presentation. Prior year general and administrative charges that were allocated to the 
operating segments have been reclassified to Operating and maintenance expenses and Operating and maintenance expenses—
affiliates on the Consolidated Statements of Comprehensive Income. In our opinion, all adjustments, consisting only of normal 
recurring adjustments necessary for a fair presentation, have been included.

Reverse Unit Split

On January 26, 2016, the board of directors of our general partner approved a 1-for-10 reverse split on our common units, 
effective following market close on February 17, 2016. Pursuant to the authorization provided, the Partnership completed the 1-
for-10 reverse unit split and its common units began trading on a reverse unit split-adjusted basis on the New York Stock Exchange 
on February 18, 2016. As a result of the reverse unit split, every 10 outstanding common units were combined into one common 
unit. The reverse unit split reduced the number of common units outstanding from 122.3 million units to approximately 12.2 
million units. All units and per unit data included in these consolidated financial statements have been retroactively restated to 
reflect the reverse unit split.

Use of Estimates

Preparation of the accompanying financial statements in conformity with accounting principles generally accepted in the 
United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in 
the  accompanying  Consolidated  Balance  Sheets  and  the  reported  amounts  of  revenues  and  expenses  in  the  accompanying 
Consolidated Statements of Comprehensive Income during the reporting period. Actual results could differ from those estimates.

Business Combinations

For purchase acquisitions accounted for as business combinations, the Partnership is required to record the assets acquired, 
including identified intangible assets and liabilities assumed at their fair value, which in many instances involves estimates based 
on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation 
techniques.

Out-of-Period Adjustment

In March 2015, the Partnership recorded an out-of-period adjustment to correct an error in depletion expense related to its 
oil and gas royalty interests owned by BRP, in which the Partnership owns a 51% interest. Depletion expense for the year ended 
December 31, 2015 includes a credit of $3.8 million to adjust the impact of depletion expense recorded in prior periods. After 
evaluating the quantitative and qualitative aspects of the error and the out-of-period adjustment to the Partnership’s financial results, 
management determined the misstatement and the out-of-period adjustment are not material to the prior period financial statements.

9

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Fair Value

The Partnership discloses certain assets and liabilities using fair value as defined by authoritative guidance. Fair value is 
defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market 
participants at the measurement date. See "Note 11. Fair Value Measurements."

There are three levels of inputs that may be used to measure fair value:

•  Level 1—Quoted prices in active markets for identical assets or liabilities.

•  Level 2—Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices 
in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for 
substantially the full term of the assets or liabilities.

•  Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value 
of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using 
pricing  models,  discounted  cash  flow  methodologies,  or  similar  techniques,  as  well  as  instruments  for  which  the 
determination of fair value requires significant management judgment or estimation.

Cash and Cash Equivalents

The Partnership considers all highly liquid short-term investments with an original maturity of three months or less to be 

cash equivalents.

Accounts Receivable

Accounts receivable from the Partnership’s lessees and customers do not bear interest. Receivables are recorded net of the 
allowance for doubtful accounts in the accompanying Consolidated Balance Sheets. The Partnership evaluates the collectability 
of its accounts receivable based on a combination of factors. The Partnership regularly analyzes its accounts receivable and when 
it becomes aware of a specific lessee’s or customer’s inability to meet its financial obligations to the Partnership, such as in the 
case of bankruptcy filings or deterioration in the lessee’s or customer’s operating results or financial position, the Partnership 
records a specific reserve for bad debt to reduce the related receivable to the amount it reasonably believes is collectible. The 
reserve is recognized as a reduction in the accounts receivable and an increase in operating and maintenance expenses or operating 
and  maintenance  expenses—affiliates. Accounts  are  charged  off  when  collection  efforts  are  complete  and  future  recovery  is 
doubtful. The allowance for doubtful accounts included in the Partnership's net accounts receivable balance (including affiliates) 
was $5.3 million and $0.7 million at December 31, 2015 and December 31, 2014, respectively. A significant amount of the change 
to the Partnership's allowance for doubtful accounts during 2015 relates to new allowances for doubtful coal-related receivables.  

Inventory

Inventories are stated at the lower of cost or market. The cost of aggregates and asphalt components such as stone, sand, and 
recycled and liquid asphalt is determined by the first-in, first-out (FIFO) method. Cost includes all direct materials, direct labor 
and related production overheads based on normal operating capacity. The cost of supplies inventory is determined by the average 
cost method and includes operating and maintenance supplies to be used in the Partnership’s aggregates operations.

Plant and Equipment

Plant and equipment is recorded at its original cost of construction or, upon acquisition, at fair value of the asset acquired 
and consists of coal preparation plants, related coal handling facilities, and other coal and aggregate processing and transportation 
infrastructure. Expenditures for new facilities and expenditures that substantially increase the useful life of property, including 
interest during construction, are capitalized and reported in the Consolidated Statements of Cash Flows. These assets are recorded 
at cost and are depreciated on a straight-line basis over their useful lives generally as follows: 

Buildings and improvements
Machinery and equipment
Leasehold improvements

10

Years

20 to 40
5 to 12
Life of Lease

 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The  Partnership  begins  capitalizing  mine  development  costs  at  its  aggregates  operations  at  a  point  when  reserves  are 
determined to be proven or probable, economically mineable and when demand supports investment in the market. Capitalization 
of these costs ceases when production commences. Mine development costs are amortized based on production over the estimated 
life of mineral reserves and amortization is included as a component of depreciation expense.

Mineral Rights

Mineral rights owned and leased are recorded at its original cost of construction or, upon acquisition, at fair value of the 
assets acquired. Coal and aggregate mineral rights are depleted on a unit-of-production basis by lease, based upon minerals mined 
in relation to the net cost of the mineral properties and estimated proven and probable tonnage therein. The Partnership owns 
royalty and non-operated working interests in oil and natural gas reserves, all of which are located in the U.S. The Partnership 
does not determine whether or when to develop reserves. The Partnership uses the successful efforts method to account for its 
working interest in oil and gas properties. Oil and gas non-operated working interests are depleted on a unit-of-production basis. 
The depletion rate is adjusted annually based upon the amount of remaining reserves as determined by independent third party 
petroleum engineers. Oil and gas royalty interests are depleted on a straight-line basis over 30 years or the life of the asset, whichever 
is shorter.

Intangible Assets

The Partnership’s intangible assets consist primarily of contracts that at acquisition were more favorable for the Partnership 
than prevailing market rates, known as above-market contracts. The estimated fair values of the above-market rate contracts are 
determined based on the present value of future cash flow projections related to the underlying assets acquired. Intangible assets 
are amortized on a unit-of-production basis except that a minimum amortization is calculated on a straight-line basis for temporarily 
idled assets.

Asset Impairment

We have developed procedures to periodically evaluate our long-lived assets for possible impairment. These procedures are 
performed throughout the year and are based on historic, current and future performance and are designed to be early warning 
tests. If an asset fails one of the early warning tests, additional evaluation is performed for that asset that considers both quantitative 
and qualitative information. A long-lived asset is deemed impaired when the future expected undiscounted cash flows from its use 
and disposition is less than the assets’ carrying value. Impairment is measured based on the estimated fair value, which is usually 
determined based upon the present value of the projected future cash flow compared to the assets’ carrying value. We believe our 
estimates of cash flows and discount rates are consistent with those of principal market participants. In addition to the evaluations 
discussed above, specific events such as a reduction in economically recoverable reserves or production ceasing on a property for 
an extended period may require a separate impairment evaluation be completed on a significant property. As a result of the continued 
weakness in the coal markets and the potential for further declines in oil and natural gas prices, we intend to closely monitor our 
coal and oil and gas assets, and the impairment evaluation process may be completed more frequently if deemed necessary. Future 
impairment analyses could result in downward adjustments to the carrying value of our assets. During 2015, we recorded impairment 
expense of $676.1 million on certain of our mineral rights within our Coal, Hard Mineral Royalty and Other and Oil and Gas 
segments as well as plant and equipment within our Coal, Hard Mineral Royalty and Other and VantaCore segments. 

We evaluate our equity investments for impairment when events or changes in circumstances indicate, in management’s 
judgment,  that  the  carrying  value  of  such  investment  may  have  experienced  an  other-than-temporary  decline  in  value. When 
evidence of loss in value has occurred, management compares the estimated fair value of the investment to the carrying value of 
the  investment  to  determine  whether  impairment  has  occurred.  If  the  estimated  fair  value  is  less  than  the  carrying  value  and 
management considers the decline in value to be other than temporary, the excess of the carrying value over the estimated fair 
value is recognized in the financial statements as an impairment loss. The fair value of the impaired investment is based on quoted 
market prices, or upon the present value of expected cash flows using discount rates believed to be consistent with those used by 
principal market participants, plus market analysis of comparable assets owned by the investee, if appropriate.

In accordance with FASB accounting and disclosure guidance for goodwill, we test our recorded goodwill for impairment 
annually or more often if indicators of potential impairment exist, by determining if the carrying value of a reporting unit exceeds 
its estimated fair value. Factors that could trigger an interim impairment test include, but are not limited to, underperformance 

11

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

relative to historical or projected future operating results or significant changes in our overall business, industry, or economic 
trends. We recorded a $5.5 million impairment loss related to the VantaCore reporting unit for the year ended December 31, 2015.

Revenue Recognition

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)     Coal and hard mineral royalty revenues are recognized on the basis of 
tons of mineral sold by our lessees and the corresponding revenue from those sales. Generally, the lessees make payments to us 
based on the greater of a percentage of the gross sales price or a fixed price per ton of mineral they sell. Processing fees are 
recognized on the basis of tons of material processed through the facilities by our lessees and the corresponding revenue from 
those sales. Generally, the lessees of the processing facilities make payments to us based on the greater of a percentage of the gross 
sales price or a fixed price per ton of material that is processed and sold from the facilities. The processing leases are structured 
in a manner so that the lessees are responsible for operating and maintenance expenses associated with the facilities. Other revenues 
include transportation and processing fees. Transportation fees are recognized on the basis of tons of material transported over the 
beltlines. Under the terms of the transportation contracts, we receive a fixed price per ton for all material transported on the beltlines. 

Most of the Partnership’s coal and aggregates lessees must make minimum annual or quarterly payments which are generally 
recoupable over certain time periods. These minimum payments are recorded as deferred revenue when received. The deferred 
revenue attributable to the minimum payment is recognized as revenue based upon the underlying mineral lease when the lessee 
recoups the minimum payment through production or in the period immediately following the expiration of the lessee’s ability to 
recoup the payments.

(cid:54)(cid:82)(cid:71)(cid:68)(cid:3)(cid:36)(cid:86)(cid:75)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)(cid:3)(cid:3)(cid:3)We account for non-marketable investments using the equity method of accounting if the investment 
gives us the ability to exercise significant influence over, but not control of, an investee. Significant influence generally exists if 
we have an ownership interest representing between 20% and 50% of the voting stock of the investee. We account for our investment 
in Ciner Wyoming using this method.

Under the equity method of accounting, investments are stated at initial cost and are adjusted for subsequent additional 
investments and the proportionate share of earnings or losses and distributions. The basis difference between the investment and 
the proportional share of the fair value of the underlying net assets of equity method investees is hypothetically allocated first to 
identified tangible assets and liabilities, then to finite-lived intangibles or indefinite-lived intangibles and the balance is attributed 
to goodwill. The portion of the basis difference attributed to net tangible assets and finite-lived intangibles is amortized over its 
estimated  useful  life  while  indefinite-lived  intangibles,  if  any,  and  goodwill  are  not  amortized. The  amortization  of  the  basis 
difference is recorded as a reduction of earnings from the equity investment in the Consolidated Statements of Comprehensive 
Income.

Our carrying value in Ciner Wyoming is reflected in the caption "Equity in unconsolidated investments" in our Consolidated 
Balance Sheets. Our adjusted share of the earnings or losses of Ciner Wyoming is reflected in the Consolidated Statements of 
Comprehensive Income as revenues and other income under the caption ‘‘Equity in earnings of Ciner Wyoming." These earnings 
are generated from natural resources, which are considered part of our core business activities consistent with its directly owned 
revenue generating activities. Investee earnings are adjusted to reflect the amortization of any difference between the cost basis 
of the equity investment and the proportionate share of the investee’s book value, which has been allocated to the fair value of net 
identified tangible and finite-lived intangible assets and amortized over the estimated lives of those assets.

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)     Revenues from the sale of aggregates, gravel, sand and asphalt are recorded based upon the transfer 
of product at delivery to customers, which generally occurs at the quarries or asphalt plants. Revenues from long-term construction 
contracts are recognized on the percentage-of-completion method, measured by the percentage of total costs incurred to date to 
the estimated total costs for each contract. That method is used since we consider total cost to be the best available measure of 
progress on the contracts. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses 
are determined. Changes in job performance, job conditions and estimated profitability, including those arising from final contract 
settlements, which result in revisions to job costs and profits are recognized in the period in which the revisions are determined. 
Contract costs include all direct job costs and those indirect costs related to contract performance, such as indirect labor, supplies, 
insurance, equipment maintenance and depreciation. General and administrative costs are charged to expense as incurred.

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86).     Oil and gas related revenues consist of revenues from our non-operated working interests, royalties 
and overriding royalties. Revenues related to our non-operated working interests in oil and gas assets are recognized on the basis 
of our net revenue interests in hydrocarbons produced. Our revenues fluctuate based on changes in the market prices for oil and 

12

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

natural gas, the decline in production from producing wells, and other factors affecting the third-party oil and natural gas exploration 
and production companies that operate our wells, including the cost of development and production. Oil and gas royalty revenues 
are recognized on the basis of volume of hydrocarbons sold by lessees and the corresponding revenue from those sales. Also, 
included within oil and gas royalties are lease bonus payments, which are generally paid upon the execution of a lease.

Property Taxes

The Partnership is responsible for paying property taxes on the properties it owns. Typically, the lessees are contractually 
responsible for reimbursing the Partnership for property taxes on the leased properties. The payment of and reimbursement of 
property  taxes  is  included  in  Coal,  Hard  Mineral  Royalty  and  Other  revenues  and  in  Operating  and  maintenance  expenses, 
respectively, in the Consolidated Statements of Comprehensive Income.

Transportation Revenue and Expense

The Company records transportation revenue and pays transportation costs to a Foresight affiliate to operate equipment on 
behalf of the Company. The revenue and expenses related to these transactions are recorded as Coal, Hard Mineral Royalty and 
Other—affiliates revenues and Operating and maintenance expenses—affiliates in the Consolidated Statements of Comprehensive 
Income. Shipping and handling costs invoiced to aggregate customers and paid to third-party carriers are recorded as Coal, Hard 
Mineral Royalty and Other revenues and Operating and maintenance expenses in the Consolidated Statements of Comprehensive 
Income.

Asset Retirement Costs and Obligations

The Partnership accrues for mine closure, reclamation as well as plugging and abandonment of its oil and gas non-operated 
working interests in accordance with authoritative guidance related to accounting for asset retirement costs and obligations. This 
guidance requires the fair value of an obligation be recognized in the period it is incurred, if the fair value can be reasonably 
estimated. The Partnership recognizes an asset and liability related to the present value of future estimated costs. Depreciation or 
depletion of the capitalized asset retirement cost is determined based upon the underlying asset being retired in the future. Accretion 
of the asset retirement obligation is recognized over time and will increase as the obligation becomes more near term. It is reasonably 
possible that the estimates related to asset retirement and environmental obligations may change in the future. See "Note 13. Asset 
Retirement Obligations."

Unit-Based Compensation

We have awarded unit-based compensation in the form of phantom units that are more fully described in Note 16. Long-

Term Incentive Plans." A summary of our accounting policy for unit-based awards follows.

The Partnership accounts for awards relating to its Long-Term Incentive Plan using the fair value method, which requires 
the Partnership to estimate the fair value of the grant, and charge or credit the estimated fair value to expense over the requisite 
service period of the grant based on fluctuations in the Partnership’s common unit price. In addition, estimated forfeitures are 
included in the periodic computation of the fair value of the liability and the fair value is recalculated at each reporting date over 
the service or vesting period of the grant. See "Note 16. Long-Term Incentive Plans."

Deferred Financing Costs

Deferred financing costs consist of legal and other costs related to the issuance of the Partnership’s long-term debt. These 
costs are amortized over the term of the debt.  Deferred financing costs are included in Other Assets on the Partnership's Consolidated 
Balance Sheets.

Income Taxes

No provision for income taxes related to the operations of the Partnership has been included in the accompanying financial 
statements because, as a partnership, it is not subject to federal or material state income taxes and the tax effect of its activities 
accrues to the unitholders. Net income for financial statement purposes may differ significantly from taxable income reportable 
to unitholders as a result of differences between the tax bases and financial reporting bases of assets and liabilities. In the event 

13

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

of an examination of the Partnership’s tax return, the tax liability of the partners could be changed if an adjustment in the Partnership’s 
income is ultimately sustained by the taxing authorities.

Lessee Audits and Inspections

The Partnership periodically audits lessee information by examining certain records and internal reports of its lessees. The 
Partnership’s regional managers also perform periodic mine inspections to verify that the information that has been reported to 
the Partnership is accurate. The audit and inspection processes are designed to identify material variances from lease terms as well 
as differences between the information reported to the Partnership and the actual results from each property. Audits and inspections, 
however, are in periods subsequent to when the revenue is reported and any adjustment identified by these processes might be in 
a reporting period different from when the revenue was initially recorded. Typically there are no material adjustments from this 
process.

Recently Issued Accounting Standards

In May 2014, the Financial Accounting Standards Board ("FASB") amended its guidance on revenue recognition. The core 
principle of this amendment is that an entity should recognize revenue to depict the transfer of promised goods or services to 
customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or 
services. This guidance is effective for annual reporting periods beginning after December 15, 2017, including interim periods 
within that reporting period. Early adoption is permitted for reporting periods beginning after December 15, 2016, including interim 
reporting periods within that period. This guidance can be adopted either retrospectively to each prior reporting period presented 
or as a cumulative-effect adjustment as of the date of adoption. The Partnership is currently evaluating the impact of the provisions 
of this guidance on its consolidated financial position, results of operations and cash flows.

In August 2014, the FASB issued guidance on management’s responsibility to evaluate whether there is substantial doubt 
about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The guidance is effective for 
interim and annual periods ending after December 15, 2016 and early adoption is permitted. The new guidance will require a 
formal assessment of going concern by management based on criteria prescribed in the new guidance, but will not impact the 
Partnership's financial position or results of operations. The Partnership is reviewing its policies and processes to ensure compliance 
with this new guidance.

In April 2015, the FASB issued authoritative guidance which intended to simplify the presentation of debt issuance costs in 
financial statements. This guidance requires an entity to present such costs in the balance sheet as a direct deduction from the 
related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. This guidance 
is effective for annual reporting periods beginning after December 15, 2016. Early adoption is permitted. This guidance will be 
applied retrospectively to each prior period presented. The Partnership is currently evaluating the impact of the provisions of this 
guidance on its consolidated balance sheets.

In July 2015, the FASB issued authoritative guidance which intended to simplify the measurement of inventory. This guidance 
requires an entity to measure inventory at the lower of cost or net realizable value. The amendments do not apply to inventory that 
is measured using last-in, first-out or the retail inventory method. This guidance is effective for annual reporting periods beginning 
after December 15, 2016, including interim periods within that reporting period, with early adoption permitted. This guidance 
should be applied on a prospective basis. The Partnership is currently evaluating the impact of the provisions of this guidance on 
its consolidated financial position, results of operations and cash flows.

In February 2016, FASB issued authoritative lease guidance that establishes a right-of-use ("ROU") model that requires a 
lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will 
be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. 
The main difference between the current requirement under GAAP and the ROU model is the recognition of lease assets and lease 
liabilities by lessees for those leases classified as operating leases. The new standard is effective for fiscal years beginning after 
December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required 
for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented 
in the financial statements, with certain practical expedients available. The Partnership is currently evaluating the impact of the 
provisions of this guidance on its consolidated financial position, results of operations and cash flows.

14

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

3.    Segment Information

The Partnership's segments are strategic business units that offer products and services to different customer segments in 

different geographies within the U.S. and that are managed accordingly. NRP has the following four operating segments: 

Coal, Hard Mineral Royalty and Other—consists primarily of coal royalty, coal related transportation and processing 
assets, aggregate and industrial minerals royalty assets and timber. Our coal reserves are primarily located in Appalachia, the 
Illinois Basin and the Western United States. Our aggregates and industrial minerals are located in a number of states across the 
United States.

Soda Ash—consists of the Partnership's 49% non-controlling equity interest in a trona ore mining operation and soda ash 
refinery in the Green River Basin, Wyoming. Ciner Resources LP, our operating partner, mines the trona, processes it into soda 
ash, and distributes the soda ash both domestically and internationally into the glass and chemicals industries. We receive regular 
quarterly distributions from this business. 

VantaCore—consists of our construction materials business acquired in October 2014 that operates hard rock quarries, an 
underground limestone mine, sand and gravel plants, asphalt plants and marine terminals. VantaCore operates in Pennsylvania, 
West Virginia, Tennessee, Kentucky and Louisiana.

Oil and Gas—consists of our non-operated working interests, royalty interests and overriding royalty interests in oil and 
natural gas properties. Our primary interests in oil and natural gas producing properties are non-operated working interests located 
in the Williston Basin in North Dakota and Montana. We also own fee mineral, royalty or overriding royalty interests in oil and 
gas properties in several other regions, including the Appalachian Basin, Oklahoma and Louisiana.

Direct segment costs and certain costs incurred at a corporate level that are identifiable and that benefit the Partnership's 
segments are allocated to the operating segments. These allocated costs include costs of: taxes, legal, information technology and 
shared facilities services and are included in Operating and maintenance expenses and Operating and maintenance expenses—
affiliates on the Consolidated Statements of Comprehensive Income. Prior year general and administrative charges that are allocated 
to the operating segments have been reclassified to operating and maintenance expenses. Intersegment sales are at prices that 
approximate market.

In reconciling items to consolidated operating income, Corporate and Financing includes functional corporate departments 
that do not earn revenues. Costs incurred by these departments include corporate headquarters and overhead,  financing, centralized 
treasury and accounting and other corporate-level activity not specifically allocated to a segment. 

15

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The following table summarizes certain financial information for each of the Partnership's operating segments (in thousands):

For the Year Ended

December 31, 2015

Operating Segments

Coal, Hard
Mineral
Royalty and
Other

Soda Ash

VantaCore

Oil and Gas

Corporate
and
Financing

Total

Revenues (including affiliates)

$ 246,353

$

49,918

Intersegment revenues (expenses)

Depreciation, depletion and amortization

Asset impairment
Interest expense, net

Net income (loss)

Capital expenditures

Total assets at December 31, 2015

21

44,478

307,800

—

—

—

—

—

(138,388)

49,918

428

—

1,047,922

261,942

$ 139,013
(21)
15,578

6,218

—

272

14,039

200,348

$

53,565

$

— $ 488,849

—

40,772

367,576

—
(377,365)
30,457

158,862

—

—

—
(93,809)
(106,157)
—

—

100,828

681,594
(93,809)
(571,720)
44,924

15,001

1,684,075

December 31, 2014

Revenues (including affiliates)

$ 256,719

$

41,416

$

42,051

$

59,566

$

— $ 399,752

Depreciation, depletion and amortization

Asset impairment
Interest expense, net

Net income (loss)

Capital expenditures

52,645

26,209

—

143,678

5,351

—

—

—

41,416

—

Total assets at December 31, 2014

1,403,762

264,020

3,296

23,935

—

—

32

171,116

219,658

—

—

14,338

359,851

540,713

—

—
(80,089)
(90,634)
—

79,876

26,209
(80,089)
108,830

536,318

16,571

2,444,724

December 31, 2013

Revenues (including affiliates)

$ 306,851

$

34,186

$

— $

17,080

$

— $ 358,117

Depreciation, depletion and amortization

58,502

Asset impairment
Interest expense, net

Net income (loss)
Capital expenditures

Total assets at December 31, 2013

734

—

211,590
—

1,520,428

—

—

—

34,186
293,085

269,338

—

—

—

—
—

—

5,875

—

—

5,198
75,019

—

—
(64,158)
(78,896)
—

64,377

734
(64,158)
172,078
368,104

189,211

12,879

1,991,856

4.    Acquisitions

VantaCore Acquisition

On October 1, 2014, the Partnership continued its effort to own a more diversified portfolio of natural resources by completing 
its acquisition of VantaCore for $200.6 million in cash and common units. At the time of acquisition, VantaCore operated three
hard rock quarries, six sand and gravel plants, two asphalt plants, one underground limestone mine and one marine terminal. 
VantaCore is headquartered in Philadelphia, Pennsylvania and its current operations are located in Pennsylvania, West Virginia, 
Tennessee, Kentucky and Louisiana. This acquisition aligned the Partnership’s effort to own a more diversified portfolio of natural 
resources.

The  Partnership  accounted  for  the  transaction  as  a  business  combination  under  the  acquisition  method  of  accounting. 
Accordingly, the Partnership conducted assessments of net assets acquired and recognized amounts for identifiable assets acquired 
and liabilities assumed at their estimated fair values on the acquisition date, while transaction and integration costs associated with 

16

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

the acquisitions were expensed as incurred. The fair value of these assets and liabilities was estimated using a discounted cash 
flow technique with significant inputs including future production volumes, aggregate sales prices, reserves and operating costs 
that  are  not  observable  in  the  market  and  thus  represents  a  Level  3  fair  value  measurement. The  results  of  operations  of  the 
acquisition have been included in our consolidated financial statements since the acquisition date.

In the first quarter 2015, the purchase price allocation was adjusted as more detailed analysis was completed and additional 
information was obtained about the facts and circumstances for various items of VantaCore’s plant and equipment that existed as 
of acquisition date. As a result of this adjustment, plant and equipment was increased by $22.5 million with a corresponding 
decrease to goodwill. In the second quarter 2015, the purchase price allocation was adjusted as more detailed analysis was completed 
and additional information was obtained about the facts and circumstances for VantaCore’s right to mine and intangible assets that 
existed as of the acquisition date. As a result of this adjustment, Mineral rights, net and Intangible assets, net were increased by 
$24.7 million with a corresponding decrease to Goodwill. The purchase price allocation was further adjusted as more detailed 
analysis was completed for VantaCore’s asset retirement obligations that existed as of acquisition date. As a result of this adjustment, 
asset retirement obligations were decreased by $2.3 million with a corresponding decrease to the asset retirement cost that was 
capitalized as part of the related land, property and equipment. The accounting for the VantaCore acquisition was completed in 
the second quarter of 2015 with the exception of this asset retirement obligation adjustment that was recoded in the fourth quarter 
of 2015. Measurement-period adjustments were not material to prior period financial statements and were recorded during the 
period in which the amount of the adjustment was determined. The accounting for the VantaCore acquisition is summarized as 
follows (in thousands):

Consideration
Cash
NRP common units

Total consideration given

Allocation of Purchase Price

Current assets
Land, property and equipment
Mineral rights
Other assets
Current liabilities
Asset retirement obligation
Goodwill

Fair value of net assets acquired

October 1, 2014

$

$

$

$

168,978
31,604
200,582

37,222
59,946
111,500
4,347
(16,953)
(1,005)
5,525
200,582

Included in the Consolidated Statements of Comprehensive Income was revenue of $42.1 million and operating income of 
$0.1 million for the year ended December 31, 2014.  Transaction costs through December 31, 2014 associated with this acquisition 
were $2.9 million and were expensed as incurred. These expenses are reflected in Operating and maintenance expenses on the 
Consolidated Statements of Comprehensive Income. 

Sanish Field Acquisition

On November 12, 2014, the Partnership continued its effort to own a more diversified portfolio of natural resources by 
completing its acquisition of non-operated oil and gas working interests in the Sanish Field of the Williston Basin from an affiliate 
of Kaiser-Francis Oil Company for $339.1 million. 

The  Partnership  accounted  for  the  transaction  as  a  business  combination  under  the  acquisition  method  of  accounting. 
Accordingly, the Partnership conducted assessments of net assets acquired and recognized amounts for identifiable assets acquired 
and liabilities assumed at their estimated fair values on the acquisition date, while transaction and integration costs associated with 
the acquisitions were expensed as incurred. The fair value of these assets and liabilities was estimated using a discounted cash 
flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement. 
Significant inputs used to determine the fair value include estimates of: (i) reserves, including estimated oil and natural gas reserves 
and risk-adjusted probable reserves; (ii) future commodity prices; (iii) production costs, (iv) capital expenditures, (v) production 
and (vi) discount rates. The results of operations of the acquisition have been included in our consolidated financial statements 
since the acquisition date. The accounting for the Sanish Field acquisition was completed in the second quarter of 2015 without 
significant changes during the measurement period and is summarized as follows (in thousands):

17

 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Consideration
Cash

Allocation of Purchase Price

Mineral rights - proven oil and gas properties
Mineral rights - probable and possible oil and gas resources

Fair value of net assets acquired

November 12, 2014

$

$

339,093

298,293
40,800
339,093

Included in the Consolidated Statements of Comprehensive Income was revenue of $12.8 million and operating income of 
$3.7 million for the year ended December 31, 2014. The transaction costs incurred in connection with this acquisition were $1.8 
million through December 31, 2014, and were expensed as incurred. These expenses are reflected in Operating and maintenance 
expenses on the Consolidated Statements of Comprehensive Income. 

Pro Forma Financial Information (unaudited)

The following unaudited pro forma financial information (in thousands) presents a summary of the Partnership’s consolidated 
revenues, net income and net income per common unit for the twelve months ended December 31, 2014 and 2013 assuming the 
VantaCore and Sanish Field acquisitions had been completed as of January 1, 2013, including adjustments to reflect the values 
assigned to the net assets acquired:

Total revenues and other income
Net income
Basic and diluted net income per common unit

Other Oil and Gas Aquisitions

For the Years ended
December 31,

2014

2013

$
$
$

533,517
122,319
9.90

$
$
$

579,933
197,164
16.00

During the year ended December 31, 2013, the Partnership also completed two smaller acquisitions of oil and natural gas 

properties located in the Williston Basin as described below: 

(cid:51)(cid:85)(cid:78)(cid:68)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:33)(cid:67)(cid:81)(cid:85)(cid:73)(cid:83)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)

In December, 2013, the Partnership completed the acquisition of non-operated working interests in oil and gas properties in 
the  Williston  Basin  of  North  Dakota  from  Sundance  Energy,  Inc.  for  $29.4  million,  following  post-closing  purchase  price 
adjustments. The Partnership accounted for the transaction in accordance with the authoritative guidance for business combinations. 
During the third quarter of 2014, the Partnership finalized the determination of the fair value of the assets acquired and liabilities 
assumed in the acquisition, with no material adjustments. The assets acquired are included in Mineral rights in the accompanying 
Consolidated Balance Sheets.

(cid:33)(cid:66)(cid:82)(cid:65)(cid:88)(cid:65)(cid:83)(cid:0)(cid:33)(cid:67)(cid:81)(cid:85)(cid:73)(cid:83)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)

In August, 2013, the Partnership completed the acquisition of non-operated working interests in oil and gas properties in the 
Williston Basin of North Dakota and Montana from Abraxas Petroleum for $38.0 million, following post-closing purchase price 
adjustments. The Partnership accounted for the transaction in accordance with the authoritative guidance for business combinations. 
During the second quarter of 2014, the Partnership finalized the determination of the fair values of the assets acquired and liabilities 
assumed in the acquisition, with no material adjustments. The assets acquired are included in Mineral rights on the accompanying 
Consolidated Balance Sheets.

With respect to the Abraxas and Sundance acquisitions, revenues of $5.4 million and operating income of $2.5 million were 
included  in  the  Consolidated  Statements  of  Comprehensive  Income  and  Consolidated  Balance  Sheet  for  the  year  ended 
December 31, 2013.

18

 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

5.    Equity Investment 

We account for our 49% investment in Ciner Wyoming LLC ("Ciner Wyoming", and formerly "OCI Wyoming LLC") using 
the equity method of accounting. Ciner Wyoming distributed $46.8 million, $46.6 million and $72.9 million to us in the year ended 
December 31, 2015, 2014 and 2013, respectively. 

The difference between the amount at which the investment in Ciner Wyoming is carried and the amount of underlying 
equity in Ciner Wyoming's net assets was $154.8 million and $162.7 million as of December 31, 2015 and 2014, respectively.  
This excess basis relates to plant, property and equipment and right to mine assets. The excess basis difference that relates to 
property, plant and equipment is being amortized into income using the straight-line method over a weighted average of 28 years. 
The excess basis difference that relates to right to mine assets is being amortized into income using the units of production method. 

Our equity in the earnings of Ciner Wyoming is summarized as follows (in thousands):

Income allocation to NRP’s equity interests
Amortization of basis difference
Equity in earnings of unconsolidated investment

For the Year Ended December 31,

2015

2014

2013

$

$

54,709
(4,791)
49,918

$

$

47,354
(5,938)
41,416

$

$

37,036
(2,850)
34,186

The results of Ciner Wyoming’s operations are summarized as follows (in thousands):

Sales
Gross profit
Net Income

For the Year Ended December 31,

$

2015
486,393
131,493
111,650

$

2014
465,032
118,439
96,640

$

2013
442,132
94,299
79,655

The financial position of Ciner Wyoming is summarized as follows (in thousands):

Current assets
Noncurrent assets
Current liabilities
Noncurrent liabilities

6.    Inventory

For the Year Ended December 31,

$

$

2015
144,695
233,845
43,018
116,808

2014
179,851
223,053
47,704
149,192

The components of inventories at December 31, 2015 and 2014 are as follows (in thousands):

Aggregates
Supplies and parts
Total inventory

7.    Plant and Equipment

The Partnership’s plant and equipment consist of the following (in thousands):

Plant and equipment at cost
Construction in process
Less accumulated depreciation

Total plant and equipment, net

19

December 31,
2015

December 31,
2014

7,056
779
7,835

$

$

4,596
1,218
5,814

December 31,
2015

December 31,
2014

92,203
1,074
(32,038)
61,239

$

$

89,759
457
(30,123)
60,093

$

$

$

$

 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Depreciation expense related to the Partnership's plant and equipment totaled $15.9 million, $7.6 million and $6.0 million
for the year ended December 31, 2015, 2014 and 2013, respectively. During the second quarter of 2015 the Partnership recorded 
a $2.3 million impairment expense related to a coal preparation plant and during the fourth quarter of 2015 the Partnership recorded 
a $4.7 million impairment expense related to coal processing and transportation assets as well as obsolete equipment at our Logan 
office. The fair value measurement of these impaired assets recorded at fair value were $0.0 million at the end of the reporting 
period.  The Partnership also recorded a $0.7 million impairment expense related to obsolete plant and equipment at VantaCore.  
During the fourth quarter of 2014, the Partnership recorded $0.8 million in impairment expense related to a coal preparation plant.  
These impairment charges are included in Asset impairments in the Consolidated Statements of Comprehensive Income for the 
year ending December 31, 2015 and December 31, 2014, respectively.

8.    Mineral Rights 

The Partnership’s mineral rights consist of the following (in thousands):

For the Year Ended December 31, 2015

Coal, Hard Mineral Royalty and Other
VantaCore
Oil and Gas
Total

Coal, Hard Mineral Royalty and Other
VantaCore
Oil and Gas
Total

Carrying Value
$ 1,278,274
112,700
155,293
$ 1,546,267

Accumulated
Depletion

Net Book Value
846,014
(432,260) $
109,618
(3,082)
138,395
(16,898)
(452,240) $ 1,094,027

For the Year Ended December 31, 2014

Carrying Value
$ 1,680,169
87,907
560,395
$ 2,328,471

Accumulated
Depletion

Net Book Value
(505,582) $ 1,174,587
87,425
(482)
519,840
(40,555)
(546,619) $ 1,781,852

$

$

$

$

Depletion expense related to the Partnership’s mineral rights totaled $80.3 million, $68.6 million and $54.6 million for the 

year ended December 31, 2015, 2014 and 2013, respectively.

Impairment of Mineral Rights 

The  Partnership  has  developed  procedures  to  periodically  evaluate  its  long-lived  assets  for  possible  impairment. These 
procedures are performed throughout the year and consider both quantitative and qualitative information based on historic, current 
and future performance and are designed to identify impairment indicators. If an impairment indicator is identified, additional 
evaluation is performed for that asset that considers both quantitative and qualitative information. A long-lived asset is deemed 
impaired when the future expected undiscounted cash flows from its use and disposition is less than the assets’ carrying value. 
Impairment is measured based on the estimated fair value, which is primarily determined based upon the present value of the 
projected future cash flow compared to the assets’ carrying value. We believe our estimates of cash flows and discount rates are 
consistent  with  those  of  principal  market  participants. The  inputs  used  by  management  for  fair  value  measurements  include 
significant inputs that are not observable in the market and thus represent a Level 3 fair value measurement for these types of 
assets. In addition to the evaluations discussed above, specific events such as a reduction in economically recoverable reserves or 
production ceasing on a property for an extended period may require that a separate impairment evaluation be completed on a 
significant property. 

20

 
 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

During the years ended December 31, 2015, 2014 and 2013, the Partnership identified facts and circumstances that indicated 
that the carrying value of certain of its mineral rights exceed future cash flows from those assets and recorded non-cash impairment 
expense as follows (in thousands):

Impaired Asset Description

Oil and gas properties

Coal properties

Hard mineral royalty properties

Total

For the years ended December 31,

2015
367,576 (1) $
257,468 (2)
43,402 (3)
668,446

$

$

$

2014

2013

—
16,793 (4)
3,013 (4)
19,806

$

$

—

734

734

(1)  We recorded $335.7 million of oil and gas property impairment during the third quarter 2015 and $31.9 million during the 
fourth quarter of 2015. The fair value measurement of these impaired assets recorded at fair value were $108.0 million at 
the end of the reporting period. These impairments primarily resulted from declines in future expected realized commodity 
prices and reduced expected drilling activity on our acreage. NRP compared net capitalized costs of its oil and natural gas 
properties to estimated undiscounted future net cash flows. If the net capitalized cost exceeded the undiscounted future net 
cash flows, NRP recorded an impairment for the excess of net capitalized cost over fair value. A discounted cash flow 
method was used to estimate fair value. Significant inputs used to determine the fair value include estimates of: (i) oil and 
natural gas reserves and risk-adjusted probable and possible reserves; (ii) future commodity prices; (iii) production costs, 
(iv)  capital  expenditures,  (v)  production  and  (vi)  discount  rates.  The  underlying  commodity  prices  embedded  in  the 
Partnership's estimated cash flows are the product of a process that begins with NYMEX forward curve pricing as of the 
measurement date, adjusted for estimated location and quality differentials.

(2)  We recorded $1.5 million of coal property impairment during the second quarter of 2015, $247.8 million of coal property 
impairment during the third quarter of 2015 and $8.2 million during the fourth quarter of 2015. The fair value measurement 
of these impaired assets recorded at fair value were $0.4 million at the end of the reporting period. These impairments 
primarily resulted from the continued deterioration and expectations of further reductions in global and domestic coal 
demand due to reduced global steel demand, sustained low natural gas prices, and continued regulatory pressure on the 
electric power generation industry. NRP compared net capitalized costs of its coal properties to estimated undiscounted 
future net cash flows. If the net capitalized cost exceeded the undiscounted future cash flows, NRP recorded an impairment 
for the excess of net capitalized cost over fair value. Significant inputs used to determine fair value include estimates of 
future cash flow, discount rate and useful economic life. Estimated cash flows are the product of a process that began with 
current realized pricing as of the measurement date and included an adjustment for risk related to the future realization of 
cash flows. 

(3)  We recorded $43.4 million of aggregates property impairment during the third quarter of 2015. The fair value measurement 
of these impaired assets recorded at fair value was $0.0 million at the end of the reporting period. This impairment primarily 
resulted from greenfield development projects that have not performed as projected, leading to recent lease concessions 
on minimums and royalties combined with the continued regional market decline for certain properties. NRP compared 
net capitalized costs of its aggregates properties to estimated undiscounted future net cash flows. If the net capitalized cost 
exceeded the undiscounted cash flows, NRP recorded an impairment for the excess of net capitalized cost over fair value. 
A discounted cash flow model was used to estimate fair value. Significant inputs used to determine fair value include 
estimates of future cash flow, discount rate and useful economic life. Estimated cash flows are the product of a process 
that began with current realized pricing as of the measurement date and included an adjustment for risk related to the future 
realization of cash flows.

(4)  We recorded $16.8 million of coal property impairment and $3.0 million impairment of our aggregates properties during 
the fourth quarter of 2014. Management concluded certain unleased properties were impaired due primarily to the ongoing 
regulatory environment and continued depressed coal markets with little indications of improvement in the near term. The 
fair values for those unleased properties were determined for the associated reserves using Level 2 market approaches 
based upon recent comparable sales and Level 3 expected cash flows.

21

 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

9.    Goodwill and Intangible Assets 

The Partnership's intangible assets consist of the following (in thousands):

Contract intangibles
Other intangibles
Less accumulated amortization
Total intangible assets, net

December 31,
2015

December 31,
2014

$

$

81,109
5,076
(29,258)
56,927

$

$

82,972
3,004
(25,243)
60,733

Amortization expense related to the Partnership's intangible assets totaled $4.6 million, $3.6 million and $3.8 million for 

the years ended December 31, 2015, 2014 and 2013, respectively.

During the second quarter of 2014, the Partnership and a lessee amended an aggregates lease in its Coal, Hard Mineral 
Royalty and Other segment, which led the Partnership to conclude an impairment triggering event had occurred. Fair value of the 
lease agreement was determined using Level 3 expected cash flows. The resulting impairment expense of $5.6 million is included 
in Asset impairments on the Consolidated Statements of Comprehensive Income.

The estimates of amortization expense for the periods as indicated below are based on current mining plans and are subject 

to revision as those plans change in future periods. 

For the Year Ended December 31,

2016
2017
2018
2019
2020

Estimated Amortization Expense

(in thousands)

$

3,544
3,095
3,108
3,108
3,108

The weighted average remaining amortization period for contract intangibles and other intangibles was 14 years and 31 

years, respectively. 

During the fourth quarter of 2014, $52.0 million of goodwill was added relating to the VantaCore acquisition. This amount 
represented the preliminary residual value. During 2015, the purchase price allocation was adjusted as more detailed analysis was 
completed and additional information was obtained about the facts and circumstances for VantaCore’s property, plant and equipment, 
right to mine assets and asset retirement obligations that existed as of the acquisition date. These adjustments decreased goodwill 
by $46.5 million and resulted in an acquisition date goodwill of $5.5 million. 

During  the  fourth  quarter  of 2015,  we  evaluated  goodwill  for  impairment  and  compared  the  estimated  fair  value  of  the 
VantaCore reporting unit to its carrying amount. The carrying amount exceeded fair value and we recorded a  $5.5 million goodwill 
impairment expense. The lower fair value was primarily a result of the deterioration in certain regional markets in which VantaCore 
operates causing a decline in future performance levels compared to levels estimated during the purchase price allocation process. 
A discounted cash flow model was used to estimate fair value. Significant inputs used to determine fair value include estimates 
of  future  cash  flow,  discount  rate  and  useful  economic  life. These  estimates  were  based  on  current  conditions  and  historical 
experience applied to develop projections of future operating performance. 

10.    Debt and Debt—Affiliate

As used in this Note 10, references to "NRP LP" refer to Natural Resource Partners L.P. only, and not to NRP (Operating) 
LLC, or NRP Oil and Gas LLC, wholly owned subsidiaries of NRP LP, or any of Natural Resource Partners L.P.’s subsidiaries. 
References to "Opco" refer to NRP (Operating) LLC and its subsidiaries. References to NRP Oil and Gas refer to NRP Oil and 
Gas LLC, a wholly owned subsidiary of NRP LP. NRP Finance Corporation ("NRP Finance") is a wholly owned subsidiary of 
NRP LP and a co-issuer with NRP LP on the 9.125% senior notes described below. See discussion of Management's Forecast, 
Strategic Plan and Going Concern Analysis and certain matters involving the Partnership's debt in Note 2.

22

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

As of December 31, 2015 and 2014, Debt and debt—affiliate consisted of the following (in thousands):

NRP LP Debt:

$425 million 9.125% senior notes, with semi-annual interest payments in April and
October, due October 2018, $300 million issued at 99.007% and $125 million issued
at 99.5%

$

422,923

$

422,167

Opco Debt:

December 31,
2015

December 31,
2014

$300 million floating rate revolving credit facility, due October 2017

$300 million floating rate revolving credit facility, due August 2016

$200 million floating rate term loan, due January 2016

4.91% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in June, due June 2018

8.38% senior notes, with semi-annual interest payments in March and September,
with annual principal payments in March, due March 2019

5.05% senior notes, with semi-annual interest payments in January and July, with
annual principal payments in July, due July 2020

5.31% utility local improvement obligation, with annual principal and interest
payments in February, due March 2021

5.55% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in June, due June 2023

4.73% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in December, due December 2023

5.82% senior notes, with semi-annual interest payments in March and September,
with annual principal payments in March, due March 2024

8.92% senior notes, with semi-annual interest payments in March and September,
with annual principal payments in March, due March 2024

5.03% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in December, due December 2026

5.18% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in December, due December 2026

NRP Oil and Gas Debt:

Reserve-based revolving credit facility due November 2019

Total debt and debt—affiliate
Less: current portion of long-term debt, net

Total long-term debt and debt—affiliate

NRP LP Debt

(cid:51)(cid:69)(cid:78)(cid:73)(cid:79)(cid:82)(cid:0)(cid:46)(cid:79)(cid:84)(cid:69)(cid:83)    

290,000

—

—

13,850

85,714

38,462

1,153

21,600

60,000

—

200,000

75,000

18,467

107,143

46,154

1,345

24,300

67,500

135,000

150,000

40,909

45,455

148,077

161,538

42,308

46,154

85,000

1,384,996
(80,983)
1,304,013

$

110,000

1,475,223
(80,983)
1,394,240

$

In September 2013, NRP LP, together with NRP Finance as co-issuer, issued $300.0 million of 9.125% Senior Notes due 
2018 at an offering price of 99.007% of par. Net proceeds after expenses from the issuance of the senior notes were approximately 
$289.0 million. The senior notes call for semi-annual interest payments on April 1 and October 1 of each year, and will mature on 
October 1, 2018.

In October 2014, NRP LP, together with NRP Finance as co-issuer, issued an additional $125.0 million of its 9.125% Senior 
Notes due 2018 at an offering price of 99.5% of par. The notes constitute the same series of securities as the existing $300.0 million
9.125% senior notes due 2018 issued in September 2013. Net proceeds of $122.6 million from the additional issuance of the Senior 
Notes were used to fund a portion of the purchase price of NRP’s acquisition of non-operated working interests in oil and gas 
assets located in the Williston Basin in North Dakota. The notes call for semi-annual interest payments on April 1 and October 1 
of each year and will mature on October 1, 2018.

23

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

NRP and NRP Finance have the option to redeem the NRP Senior Notes, in whole or in part, at any time on or after April 1, 
2016, at fixed redemption prices specified in the indenture governing the NRP Senior Notes (the "NRP Senior Notes Indenture"). 
Before April 1, 2016, NRP and NRP Finance may redeem all or part of the NRP Senior Notes at a redemption price equal to the 
sum of the principal plus a make whole premium at the redemption date, plus accrued and unpaid interest, if any, to the redemption 
date. Furthermore, before April 1, 2016, NRP and NRP Finance may on any one or more occasions redeem up to 35% of the 
aggregate principal amount of the notes with the net proceeds of certain public or private equity offerings at a redemption price 
of 109.125% of the principal amount of notes, plus any accrued and unpaid interest, if any, to the date of redemption, if at least 
65%  of  the  aggregate  principal  amount  of  the  notes  issued  under  the  indenture  remains  outstanding  immediately  after  such 
redemption and the redemption occurs within 180 days of the closing date of such equity offering. In the event of a change of 
control, as defined in the indenture, the holders of the notes may require NRP and NRP Finance to purchase their notes at a purchase 
price equal to 101% of the principal amount of the notes, plus accrued and unpaid interest, if any.

The indenture governing the $425.0 million of senior notes issued by NRP LP (the "Indenture") contains covenants that, 
among other things, limit the ability of NRP LP and certain of its subsidiaries to incur or guarantee additional indebtedness. Under 
the Indenture, NRP LP and certain of its subsidiaries generally are not permitted to incur additional indebtedness unless, on a 
consolidated basis, the fixed charge coverage ratio (as defined in the indenture) is at least 2.0 to 1.0 for the four preceding full 
fiscal quarters. The ability of NRP LP and certain of its subsidiaries to incur additional indebtedness is further limited in the event 
the amount of indebtedness of NRP LP and certain of its subsidiaries that is senior to NRP LP’s unsecured indebtedness exceeds 
certain thresholds. As of December 31, 2015 and December 31, 2014, NRP was in compliance with the terms of the financial 
covenants contained in its debt agreements.

Opco Debt

All of Opco’s debt is guaranteed by its wholly owned subsidiaries and is secured by certain of the assets of Opco and its 
wholly owned subsidiaries other than NRP Trona LLC, as further described below. As of December 31, 2015 and December 31, 
2014, Opco was in compliance with the terms of the financial covenants contained in its debt agreements.

(cid:50)(cid:69)(cid:86)(cid:79)(cid:76)(cid:86)(cid:73)(cid:78)(cid:71)(cid:0)(cid:35)(cid:82)(cid:69)(cid:68)(cid:73)(cid:84)(cid:0)(cid:38)(cid:65)(cid:67)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)

In June 2015, Opco entered into a $300.0 million Third Amended and Restated Credit Agreement (the "A&R Revolving 
Credit Facility"), which amended and restated Opco’s $300.0 million Second Amended and Restated Credit Agreement due August 
2016. The A&R Revolving Credit Facility matures on October 2, 2017, is guaranteed by all of Opco’s wholly owned subsidiaries, 
and is secured by liens on certain of the assets of Opco and its subsidiaries, as further described below.

Initially, indebtedness under the A&R Revolving Credit Facility bears interest, at Opco's option, at a rate of either: 

• 

the higher of (i) the prime rate as announced by the agent bank; (ii) the federal funds rate plus 0.50%; or (iii) LIBOR 
plus 1%, in each case plus 2.375%; or

• 

a rate equal to LIBOR plus 3.375% 

Borrowings under the A&R Revolving Credit Facility will bear interest at such rate until the time that Opco delivers quarterly 
financial statements for the year ended December 31, 2015 to the lenders thereunder.  Following such delivery date, indebtedness 
under the A&R Revolving Credit Facility will bear interest, at Opco's option, at a rate of either:  

• 

the higher of (i) the prime rate as announced by the agent bank; (ii) the federal funds rate plus 0.50%; or (iii) LIBOR 
plus 1%, in each case plus an applicable margin ranging from 1.50% to 2.50% or 

• 

a rate equal to LIBOR plus an applicable margin ranging from 2.50% to 3.50% 

The weighted average interest rates for the borrowings outstanding under the A&R Revolving Credit Facility for the twelve 

months ended December 31, 2015 and year ended December 31, 2014 were 2.91% and 1.98%, respectively. 

Opco will incur a commitment fee on the unused portion of the revolving credit facility at a rate of 0.50% per annum. Opco 

may prepay all amounts outstanding under the A&R Revolving Credit Facility at any time without penalty.

24

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The A&R Revolving Credit Facility contains financial covenants requiring Opco to maintain: 

• 

a leverage ratio of consolidated indebtedness to consolidated EBITDDA (as defined in the A&R Revolving Credit Facility) 
not to exceed:

• 

• 

• 

4.0 to 1.0 for each fiscal quarter ending on or before March 31, 2016;

3.75 to 1.0 for each subsequent fiscal quarter ending on or before March 31, 2017; and

3.5 to 1.0 for each fiscal quarter ending on or after June 30, 2017; and

• 

a ratio of consolidated EBITDDA to consolidated fixed charges (consisting of consolidated interest expense and consolidated 
lease expense) of not less than 3.5 to 1.0.

The A&R Revolving Credit Facility contains certain additional customary negative covenants that, among other items, restrict 
Opco’s ability to incur additional debt, grant liens on its assets, make investments, sell assets and engage in business combinations. 
Included in the investment covenant are restrictions upon Opco’s ability to acquire assets where Opco does not maintain certain 
levels of liquidity. The A&R Revolving Credit Facility also contains customary events of default, including cross-defaults under 
Opco’s senior notes (as described below).

The A&R Revolving Credit Facility is collateralized and secured by liens on certain of Opco’s assets with a carrying value 
of $709.9 million classified as Land, Mineral rights and Plant and equipment on the Partnership’s Consolidated Balance Sheet as 
of December 31, 2015. The collateral includes (1) the equity interests in all of Opco’s wholly owned subsidiaries, other than NRP 
Trona LLC (which owns a 49% non-controlling equity interest in Ciner Wyoming), (2) the personal property and fixtures owned 
by Opco’s wholly owned subsidiaries, other than NRP Trona LLC, (3) Opco’s material coal royalty revenue producing properties, 
(4) real property associated with certain of VantaCore’s construction aggregates mining operations, and (5) certain of Opco’s coal-
related infrastructure assets.

(cid:52)(cid:69)(cid:82)(cid:77)(cid:0)(cid:44)(cid:79)(cid:65)(cid:78)(cid:0)

During 2013, Opco entered into a $200.0 million Term Loan facility (the "Term Loan") with a maturity date of January 23, 
2016. The weighted average interest rates for the debt outstanding under the term loan for the twelve months ended December 31, 
2015 and 2014 were 2.19% and 2.22% respectively. 

Opco repaid $101.0 million in principal under the Term Loan during the third quarter of 2013, and repaid an additional $24.0 
million during the fourth quarter of 2014. In September 2015, Opco repaid the remaining $75.0 million on the term loan using 
borrowings under the A&R Revolving Credit Facility.

(cid:51)(cid:69)(cid:78)(cid:73)(cid:79)(cid:82)(cid:0)(cid:46)(cid:79)(cid:84)(cid:69)(cid:83)   

Opco made principal payments of $80.8 million on its senior notes during the year ended December 31, 2015. The Note 

Purchase Agreements relating to Opco’s senior notes contain covenants requiring Opco to: 

•  Maintain a ratio of consolidated indebtedness to consolidated EBITDDA (as defined in the note purchase agreement) 
of no more than 4.0 to 1.0 for the four most recent quarters;

not permit debt secured by certain liens and debt of subsidiaries to exceed 10% of consolidated net tangible assets (as 

• 
defined in the note purchase agreement); and

•  maintain the ratio of consolidated EBITDDA (as defined in the note purchase agreement) to consolidated fixed charges 
(consisting of consolidated interest expense and consolidated operating lease expense) at not less than 3.5 to 1.0.

The 8.38% and 8.92% senior notes also provide that in the event that Opco’s leverage ratio of consolidated indebtedness to 
consolidated EBITDDA (as defined in the note purchase agreement) exceeds 3.75 to 1.00 at the end of any fiscal quarter, then in 
addition to all other interest accruing on these notes, additional interest in the amount of 2.00% per annum shall accrue on the 
notes for the two succeeding quarters and for as long thereafter as the leverage ratio remains above 3.75 to 1.00.

In connection with the entry into the A&R Revolving Credit Facility in June 2015, Opco entered into the Third Amendment 
to the Note Purchase Agreements (the "NPA Amendment") that provides for the security of the senior notes by the same collateral 
package pledged by Opco and its subsidiaries to secure the A&R Revolving Credit Facility, as described above. In addition, the 

25

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

NPA Amendment includes a covenant that provides that, in the event Opco or any of its subsidiaries is subject to any additional 
or more restrictive covenants under the agreements governing its material indebtedness (including the A&R Revolving Credit 
Facility, and all renewals, amendments or restatements thereof), such covenants shall be deemed to be incorporated by reference 
in the senior notes and the holders of the senior notes shall receive the benefit of such additional or more restrictive covenants to 
the same extent as the lenders under such material indebtedness agreement.

NRP Oil and Gas Debt

(cid:50)(cid:69)(cid:86)(cid:79)(cid:76)(cid:86)(cid:73)(cid:78)(cid:71)(cid:0)(cid:35)(cid:82)(cid:69)(cid:68)(cid:73)(cid:84)(cid:0)(cid:38)(cid:65)(cid:67)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:3)(cid:3)(cid:3)

In August 2013, NRP Oil and Gas entered into a 5-year, $100.0 million senior secured, reserve-based revolving credit facility 
in order to fund capital expenditure requirements related to the development of the oil and gas assets in which it owns non-operated 
working interests. In connection with the closing of the Sanish Field acquisition in November 2014, the credit facility was amended 
to increase its size to $500.0 million with an initial borrowing base of $137.0 million, and the maturity date thereof was extended 
to November 2019. 

The maximum amount available under the credit facility is subject to semi-annual redeterminations of the borrowing base 
in May and November of each year, based on the value of the proved oil and natural gas reserves of NRP Oil and Gas, in accordance 
with  the  lenders’  customary  procedures  and  practices.  NRP  Oil  and  Gas  and  the  lenders  each  have  a  right  to  one  additional 
redetermination each year. In April 2015, the lenders completed their semi-annual redetermination of the borrowing base under 
the NRP Oil and Gas revolving credit facility and the $137.0 million borrowing base under that facility was redetermined to $105.0 
million.    In  October  2015,  the  lenders  under  the  NRP  Oil  and  Gas  revolving  credit  facility  completed  their  semi-annual 
redetermination of the borrowing base under the NRP Oil and Gas revolving credit facility and the $105.0 million borrowing base 
was redetermined to $88.0 million.  The Partnership repaid $25.0 million of outstanding borrowings under the NRP Oil and Gas 
revolving credit facility during the year ended December 31, 2015. At December 31, 2015 and 2014, there was $85.0 million and 
$110.0 million respectively, outstanding under the NRP Oil and Gas revolving credit facility.

The credit facility is secured by a first priority lien and security interest in substantially all of the assets of NRP Oil and Gas. 
NRP Oil and Gas is the sole obligor under its revolving credit facility, and neither the Partnership nor any of its other subsidiaries 
is a guarantor of such facility. The weighted average interest rate for the debt outstanding under the credit facility for the twelve 
months ended December 31, 2015 and, 2014 was 2.50% and 2.37%, respectively.

Indebtedness under the NRP Oil and Gas credit facility bears interest, at the option of NRP Oil and Gas, at either:

• 

the higher of (i) the prime rate as announced by the agent bank; (ii) the federal funds rate plus 0.50%; or (iii) LIBOR 
plus 1%, in each case plus an applicable margin ranging from 0.50% to 1.50%; or 

• 

a rate equal to LIBOR, plus an applicable margin ranging from 1.50% to 2.50%.  

NRP Oil and Gas incurs a commitment fee on the unused portion of the borrowing base under the credit facility at a rate 

ranging from 0.375% to 0.50% per annum.

The NRP Oil and Gas credit facility contains certain covenants, which, among other things, require the maintenance of:

• 

a total leverage ratio (defined as the ratio of the total debt of NRP Oil and Gas to its EBITDAX) of not more than 3.5
to 1.0; and

• 

a minimum current ratio of 1.0 to 1.0.

As of December 31, 2015 and 2014, NRP Oil and Gas was in compliance with the terms of the financial covenants contained 

in its credit facility.

26

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Consolidated Principal Payments

The consolidated principal payments due are set forth below (in thousands):

2016
2017
2018
2019
2020
Thereafter

NRP LP

Senior Notes
—
—
425,000
—
—
—
425,000

$

$

(1)

Senior Notes
80,983
80,983
80,983
76,366
54,938
212,820
587,073

$

$

Credit Facility
$

— $

290,000
—
—
—
—
290,000

$

$

— $
—
—
85,000
—
—
85,000

80,983
370,983
505,983
161,366
54,938
212,820

$ 1,387,073  

Opco

NRP
Oil and Gas

Credit Facility

Total

(1)  The 9.125% senior notes due 2018 were issued at a discount and as of December 31, 2015 were carried at $422.9 million.

11.    Fair Value Measurements

The Partnership’s financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable and long-
term debt. The carrying amounts reported on our Consolidated Balance Sheets for cash and cash equivalents, accounts receivable 
and accounts payable approximate fair value due to their short-term nature. The following table (in thousands) shows the carrying 
amount and estimated fair value of our other financial instruments:

Assets

Contracts receivable—affiliate, current and long-term
(1)

Debt and debt—affiliate

NRP LP senior notes (2)
Opco senior notes and utility local improvement
obligation (1)

Opco revolving credit facility and term loan facility
(3)
NRP Oil and Gas revolving credit facility (3)

$

$

$

$
$

December 31, 2015

December 31, 2014

Carrying
Amount

Estimated Fair 
Value

Carrying
Amount

Estimated Fair 
Value

4,891

422,923

587,073

290,000
85,000

$

$

$

$
$

4,158

277,313

383,065

290,000
85,000

$

$

$

$
$

4,870

422,167

668,056

275,000
110,000

$

$

$

$
$

5,162

423,780

672,740

275,000
110,000

(1)  The Level 3 fair value is estimated by management using quotations obtained for comparable instruments on the closing 

trading prices near year end.

(2)  The Level 1 fair value is based upon quotations obtained for identical instruments on the closing trading prices near year 

end.

(3)  The Level 3 fair value approximates the carrying amount because the interest rates are variable and reflective of market 

rates and the terms of the credit facility allow the Partnership to repay this debt at any time without penalty.

27

 
 
 
 
 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

12.    Related Party Transactions 

Reimbursements to Affiliates of our General Partner

The Partnership’s general partner does not receive any management fee or other compensation for its management of Natural 
Resource Partners L.P. However, in accordance with the partnership agreement, the general partner and its affiliates are reimbursed 
for expenses incurred on the Partnership’s behalf. Direct general and administrative expenses are charged to the Partnership as 
incurred. The Partnership also reimburses indirect general and administrative costs, including certain legal, accounting, treasury, 
information technology, insurance, administration of employee benefits and other corporate services incurred by the Partnership’s 
general  partner  and  its  affiliates,  Quintana  Minerals  Corporation  and  Western  Pocahontas  Properties  Limited  Partnership 
("WPPLP"). In addition, the Partnership receives non-cash equity contributions from its general partner related to compensation 
paid directly by the general partner and not reimbursed by the Partnership.  These amounts are presented as non-cash equity 
contributions on the Partnership's Consolidated Statements of Partners' Capital.

The Partnership had Accounts payable—affiliates to Quintana Minerals Corporation of $1.1 million and $0.6 million at 
December 31, 2015 and 2014, respectively, for services provided by Quintana Minerals Corporation to the Partnership.  The 
Partnership  had Accounts  payable—affiliates  to  WPPLP  of  $0.3  million  and  $0.4  million  at  December  31,  2015  and  2014, 
respectively.

Direct general and administrative expenses charged to the Partnership by its general partner for services performed by WPPLP 

and Quintana Minerals Corporation are as follows (in thousands):

Operating and maintenance expenses—affiliates, net
General and administrative—affiliates

For the Year Ended
December 31,

2015

2014

2013

16,031
5,312

10,770
3,258

8,821
3,286

The Partnership also leases an office building in Huntington, West Virginia from WPPLP and pays $0.6 million in lease 

payments each year through December 31, 2018. 

Cline Affiliates

Various companies controlled by Chris Cline, including Foresight Energy LP, lease coal reserves from the Partnership, and 
the Partnership also leases coal transportation assets to them for a fee. Mr. Cline, both individually and through another affiliate, 
Adena Minerals, LLC, owns a 31% interest (unaudited) in the NRP's general partner, as well as approximately 0.5 million of NRP's 
common units (unaudited) at December 31, 2015. Coal related revenues from Foresight Energy totaled $86.6 million, $81.5 million
and $88.4 million for the years ended December 31, 2015, 2014 and 2013, respectively.

As of December 31, 2015 and 2014, the Partnership had Accounts receivable—affiliates from Foresight Energy of $6.4 
million and $9.2 million, respectively. As of December 31, 2015, the Partnership had received $82.6 million in minimum royalty 
payments to date that have been recorded as Deferred revenue—affiliates since they have not been recouped by Foresight Energy.

The Partnership owns and leases rail load out and associated facilities to Foresight Energy at Foresight Energy's Sugar Camp 
mine.  The lease agreement is accounted for as a direct financing lease.  Total projected remaining payments under the lease at 
December 31, 2015 were $81.2 million with unearned income of $35.4 million, and the net amount receivable was $45.9 million, 
of  which  $2.0  million  is  included  in Accounts  receivable—affiliates  while  the  remaining  is  included  in  Long-term  contracts 
receivable—affiliate on the accompanying Consolidated Balance Sheets. Minimum lease payments are $5.0 million per year for 
the next five years and represent a $1.25 million per quarter in deficiency payment.

Total projected remaining payments under the lease at December 31, 2014 were $86.3 million with unearned income of $39.0 
million and the net amount receivable was $47.3 million, of which $1.8 million is included in Accounts receivable—affiliates 
while the remaining is included in Long-term contracts receivable—affiliates on the accompanying Consolidated Balance Sheets. 

The  Partnership  holds  a  contractual  overriding  royalty  interest  from  a  subsidiary  of  Foresight  Energy  that  provides  for 
payments based upon production from specific tons at Foresight Energy's Sugar Camp operations. This overriding royalty was 
accounted for as a financing arrangement and is reflected as an affiliate receivable. The net amount receivable under the agreement 
28

 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

as of December 31, 2015 was $4.9 million, of which $1.5 million is included in Accounts receivable—affiliates while the remaining 
is included in Long-term contracts receivable—affiliate.  The net amount receivable under the agreement as of December 31, 2014 
was $5.6 million, of which $1.1 million is included in Accounts receivable—affiliates while the remaining is included in Long-
term contracts receivable—affiliate on the accompanying Consolidated Balance Sheets.

During the years ended December 31, 2015, 2014 and 2013, the Partnership recognized a gain of $9.3 million, $5.7 million
and $8.1 million, respectively on a reserve swap at Foresight Energy's Williamson mine. The gain is included in Coal, hard mineral 
royalty and other—affiliates revenues on the Consolidated Statements of Comprehensive Income. The Level 3 fair value of the 
reserves was estimated using a discounted cash flow model.  The expected cash flows were developed using estimated annual 
sales tons, forecasted sales prices and anticipated market royalty rates. 

Long-Term Debt—Affiliate

Donald R. Holcomb, one of the Partnership’s directors, is a manager of Cline Trust Company, LLC, which owns approximately 
0.54 million of the Partnership’s common units and $20.0 million in principal amount of the Partnership’s 9.125% Senior Notes 
due 2018. The members of the Cline Trust Company are four trusts for the benefit of the children of Chris Cline, each of which 
owns an approximately equal membership interest in the Cline Trust Company. Mr. Holcomb also serves as trustee of each of the 
four trusts. Cline Trust Company, LLC purchased the $20.0 million of the Partnership’s 9.125% Senior Notes due 2018 in the 
Partnership’s offering of $125.0 million additional principal amount of such notes in October 2014 at the same price as the other 
purchasers in that offering. The balance on this portion of the Partnership’s 9.125% Senior Notes due 2018 was $19.9 million as 
of December 31, 2015 and 2014 and is included in Long-term debt, net—affiliate on the accompanying Consolidated Balance 
Sheet.

Quintana Capital Group GP, Ltd.

Corbin J. Robertson, Jr. is a principal in Quintana Capital Group GP, Ltd. ("Quintana Capital"), which controls several private 
equity funds focused on investments in the energy business. In connection with the formation of Quintana Capital, the Partnership 
adopted a formal conflicts policy that establishes the opportunities that will be pursued by the Partnership and those that will be 
pursued by Quintana Capital. The governance documents of Quintana Capital’s affiliated investment funds reflect the guidelines 
set forth in the Partnership's conflicts policy.

At December 31, 2015, a fund controlled by Quintana Capital owned a majority interest in Corsa Coal Corp ("Corsa")., a 
coal mining company traded on the TSX Venture Exchange that is one of the Partnership’s lessees in Tennessee. Corbin J. Robertson 
III, one of the Partnership’s directors, is Chairman of the Board of Corsa. Coal related revenues from Corsa totaled $3.1 million, 
$3.0 million and $4.6 million for the years ended December 31, 2015, 2014 and 2013, respectively.

As of December 31, 2015, the Partnership had recorded $0.3 million in minimum royalty payments to date as Deferred 
revenue—affiliates since they have not been recouped by Corsa.  The Partnership also had Accounts receivable—affiliates totaling 
$0.2 million and $0.3 million from Corsa at December 31, 2015 and 2014, respectively.

A fund controlled by Quintana Capital owned a significant membership interest in Taggart Global USA, LLC, including the 
right to nominate two members of Taggart’s 5-person board of directors. In 2013, Taggart was sold to Forge Group, and Quintana 
no longer retains an interest in Taggart or Forge. The Partnership owns and leases preparation plants to Forge, which operates the 
plants. The lease payments were based on the sales price for the coal that was processed through the facilities.  The revenues from 
Taggart prior to the sale to Forge were $1.8 million for the year ended December 31, 2013.

WPPLP Production Royalty and Overriding Royalty

For the year ended December 31, 2015, the Partnership recorded $0.4 million in operating and maintenance expenses—
affiliates related to a non-participating production royalty payable to WPPLP pursuant to a conveyance agreement entered into in 
2007.  These charges were zero for the years ended December 31, 2014 and 2013. The Partnership had Other assets—affiliate 
from WPPLP of $1.1 million and $0.0 million at December 31, 2015 and December 31, 2014, respectively related to a non-
production royalty receivable from WPPLP for overriding royalty interest on a mine.

29

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

13.    Asset Retirement Obligations 

The Partnership accrues a liability for legal asset retirement obligations based on an estimate of the timing and amount of 
settlement.  The  Partnership  accrues  for  costs  involving  the  ultimate  closure  of  certain  of  its  aggregate  mining  operations  in 
accordance with its operating permits. These charges include costs of land reclamation, water drainage, and incremental direct 
administration cost of closing the operations. The Partnership also accrues for estimated costs relating to plugging wells in which 
it has a non-operation working interest. Upon initial recognition of an asset retirement obligation the Partnership increases the 
carrying amount of the long-lived asset by the same amount as the liability. Over time, the liabilities are accreted for the change 
in their present value, through charges to depreciation, depletion, and amortization and the initial costs are depleted over the useful 
lives of the related assets.

The following table presents a reconciliation (in thousands) of the beginning and ending carrying amounts of the Partnership’s 
asset retirement obligations. The short-term balance of $0.0 million and $0.1 million at December 31, 2015 and 2014, respectively, 
is included in Accrued liabilities and the remaining balance is included in Other non-current liabilities in the Consolidated Balance 
Sheets. The Partnership does not have any assets that are legally restricted for purposes of settling these obligations.

Balance, January 1
Liabilities incurred in current period, including aquisitions
Accretion expense
Acquisition related purchase price adjustments
Balance, December 31

14.    Commitments and Contingencies

Legal

For the Years  Ended
December 31,

2015

2014

$

$

4,973
5
284
(2,280)
2,982

$

$

39
4,697
237
—
4,973

The Partnership is involved, from time to time, in various legal proceedings arising in the ordinary course of business. While 
the ultimate results of these proceedings cannot be predicted with certainty, Partnership management believes these claims will 
not have a material effect on the Partnership’s financial position, liquidity or operations.

The purchase agreement for the acquisition of the Partnership’s interest in Ciner Wyoming, formerly OCI Wyoming, requires 
the Partnership to pay additional contingent consideration to Anadarko to the extent certain performance criteria described in the 
purchase agreement are met at Ciner Wyoming in any of the years 2013, 2014 or 2015. During the first quarters of 2014 and 2015, 
the Partnership paid $0.5 million and $3.8 million, respectively, in contingent consideration to Anadarko. As of December 31, 
2015, the Partnership has estimated and recorded $7.2 million as an accrued liability on its consolidated Balance Sheet, payable 
in the first quarter of 2016 with respect to 2015. The Partnership has no obligation to pay contingent consideration with respect 
to any period after 2015.

In March 2014, Anadarko gave the Partnership written notice that it believed certain reorganization transactions conducted 
in 2013 within the OCI organization triggered an acceleration of the Partnership’s obligation under the purchase agreement with 
Anadarko to pay the additional contingent consideration in full and demanded immediate payment of such amount. The Partnership 
disagreed with Anadarko’s position in a written response provided to them in April 2014. In April 2015, Anadarko sent a written 
request for additional information regarding the OCI reorganization and indicated that they were still considering this claim against 
the Partnership. The Partnership responded in writing in May 2015 and does not believe the reorganization transactions triggered 
an obligation to pay the additional contingent consideration. The Partnership will continue to engage in discussions with Anadarko 
to resolve the issue to the extent necessary. However, if Anadarko were to pursue and prevail on such a claim, the Partnership 
would be required to pay an amount to Anadarko in excess of the amounts already paid, together with the $7.2 million accrual 
described above, up to the maximum amount of the additional contingent consideration, minus a deductible. Under the purchase 
agreement, the maximum cumulative amount of additional contingent consideration is an amount equal to the net present value 
of $50.0 million. Any additional amount paid by the Partnership would be considered to be additional acquisition consideration 
and added to Equity and other unconsolidated investments.

Since 2013, several citizen group lawsuits have been filed against landowners alleging ongoing discharges of pollutants, 
including selenium and conductivity, from valley fills located at reclaimed mountaintop removal mining sites in West Virginia. In 
30

 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

each case, the mine on the subject property had been closed, the property had been reclaimed, and the state reclamation bond had 
been released. Any determination that a landowner or lessee has liability for discharges from a previously reclaimed mine site 
could result in substantial compliance costs or fines and would result in uncertainty as to continuing liability for completed and 
reclaimed coal mine operations. A subsidiary of the Partnership has been named as a defendant in one of these lawsuits. Given the 
early stage of this ongoing litigation, the Partnership currently cannot reasonably estimate a range of potential loss, if any, related 
to this matter.

Hillsboro/Deer Run

On November 24, 2015, we filed a lawsuit against Foresight Energy’s subsidiary, Hillsboro Energy LLC ("Hillsboro"), in 
the Circuit Court of the Fourth Judicial Circuit in Montgomery County, Illinois. The lawsuit alleges, among other items, breach 
of contract by Hillsboro resulting from a wrongful declaration of force majeure at Hillsboro’s Deer Run mine in July 2015. In late 
March 2015, elevated carbon monoxide readings were detected at the Deer Run mine, and coal production at the mine was idled. 
In July 2015, we received the notice declaring a force majeure event at the mine as a result of the elevated carbon monoxide levels. 
The effect of a valid force majeure declaration would relieve Foresight Energy of its obligation to pay us minimum deficiency 
payments of $7.5 million per quarter, or $30.0 million per year. Foresight Energy's failure to make the deficiency payment with 
respect to the second, third and fourth quarters of 2015 resulted in a $16.2 million cash impact to us. Such amount will increase 
for each quarter during which mining operations continue to be idled. We do not currently have an estimate as to when the mine 
will resume coal production. If the mine remains idled for an extended period or if the mine is permanently closed, our financial 
condition could be adversely affected.

Environmental Compliance

The operations the Partnership’s lessees’ conduct on its properties, as well as the aggregates/industrial minerals and oil and 
gas operations in which the Partnership has interests, are subject to federal and state environmental laws and regulations. See "Item 
1. Business—Regulation and Environmental Matters." As an owner of surface interests in some properties, the Partnership may 
be liable for certain environmental conditions occurring on the surface properties. The terms of substantially all of the Partnership’s 
coal leases require the lessee to comply with all applicable laws and regulations, including environmental laws and regulations. 
Lessees post reclamation bonds assuring that reclamation will be completed as required by the relevant permit, and substantially 
all of the leases require the lessee to indemnify the Partnership against, among other things, environmental liabilities. Some of 
these indemnifications survive the termination of the lease. The Partnership makes regular visits to the mines to ensure compliance 
with lease terms, but the duty to comply with all regulations rests with the lessees. The Partnership believes that its lessees will 
be able to comply with existing regulations and does not expect that any lessee’s failure to comply with environmental laws and 
regulations to have a material impact on the Partnership’s financial condition or results of operations. The Partnership has neither 
incurred, nor is aware of, any material environmental charges imposed on the Partnership related to its properties for the period 
ended December 31, 2015. The Partnership is not associated with any environmental contamination that may require remediation 
costs. However, the Partnership’s lessees do conduct reclamation work on the properties under lease to them. Because the Partnership 
is not the permittee of the mines being reclaimed, the Partnership is not responsible for the costs associated with these reclamation 
operations. As an owner of working interests in oil and natural gas operations, the Partnership is responsible for its proportionate 
share  of  any  losses  and  liabilities,  including  environmental  liabilities,  arising  from  uninsured  and  underinsured  events.  The 
Partnership is also responsible for losses and liabilities, including environmental liabilities that may arise from uninsured and 
underinsured events at its VantaCore operations.

15.    Major Lessees 

Revenues from lessees that exceeded ten percent of total revenues and other income for any of the periods presented below 

are as follows (in thousands except for percentages):

2015

For the Years Ended December 31,
2014

2013

Revenues

Percent

Revenues

Percent

Revenues

Percent

Foresight Energy
Alpha Natural Resources

$
$

86,614
34,364

17.7% $
7.0% $

81,546
48,783

20.4% $
12.2% $

88,432
55,147

24.7%
15.4%

All of the revenue related to the customers above is included in revenues of the Coal, Hard Mineral Royalty and Other 

segment.

31

 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The  Partnership  had  a  significant  concentration  of  revenues  with  Foresight  Energy  and Alpha  Natural  Resources.   The 
exposure is currently spread out over a number of different mining operations and leases. During the year ended December 31, 
2015, total revenues and other income from Alpha Natural Resources included a $6.0 million non-recurring lease assignment fee.    

16.    Long-Term Incentive Plans 

GP  Natural  Resource  Partners  LLC  adopted  the  Natural  Resource  Partners  Long-Term  Incentive  Plan  (the  "Long-Term 
Incentive Plan") for directors of GP Natural Resource Partners LLC and employees of its affiliates who perform services for the 
Partnership. The compensation committee of GP Natural Resource Partners LLC’s board of directors administers the Long-Term 
Incentive Plan. Subject to the rules of the exchange upon which the common units are listed at the time, the board of directors and 
the compensation committee of the board of directors have the right to alter or amend the Long-Term Incentive Plan or any part 
of the Long-Term Incentive Plan from time to time. Except upon the occurrence of unusual or nonrecurring events, no change in 
any outstanding grant may be made that would materially reduce the benefit intended to be made available to a participant without 
the consent of the participant.

Phantom units are incentive based equity awards issued to employees over a vesting period that entitle the grantee to receive 
the cash equivalent to the value of a unit of our common units upon each vesting. The Partnership records compensation cost equal 
to the fair value of the award at the measurement date, which is determined to be the earlier of the performance commitment date 
or the service completion date. In addition, compensation cost for unvested phantom unit awards is adjusted quarterly for any 
changes in the Partnership’s unit price. Under the plan a grantee will receive the market value of a common unit in cash upon 
vesting. Market value is defined as the average closing price over the 20 trading days prior to the vesting date. The compensation 
committee may make grants under the Long-Term Incentive Plan to employees and directors containing such terms as it determines, 
including the vesting period. Outstanding grants vest upon a change in control of the Partnership, the general partner, or GP Natural 
Resource Partners LLC. If a grantee’s employment or membership on the board of directors terminates for any reason, outstanding 
grants will be automatically forfeited unless and to the extent the compensation committee provides otherwise. 

In connection with the phantom unit awards, the Compensation, Nominating and Governance Committee also granted tandem 
Distribution Equivalent Rights ("DERs"), which entitle the holders to receive distributions equal to the distributions paid on the 
Partnership’s common units between the date the units are granted and the vesting date. The DERs are payable in cash upon vesting 
but may be subject to forfeiture if the grantee ceases employment prior to vesting.

A summary of activity in the outstanding grants during 2015 is as follows (in thousands):

Outstanding grants at January 1, 2015

Grants during the period
Grants vested and paid during the period
Forfeitures during the period

Outstanding grants at December 31, 2015

Phantom Units

115
52
(29)
(12)
126

Grants typically vest at the end of a four-year period and are paid in cash upon vesting. The Partnership recorded a credit to 
general and administrative expenses related to its Long-Term Incentive Plan of $3.4 million for the year ended December 31, 2015, 
due to the decline in the market price of the Partnership's common units during 2015. For the years ended December 31, 2014 and 
2013 the Partnership recorded G&A expenses of $1.0 million and $9.6 million, respectively. 

In connection with the Long-Term Incentive Plans, payments are typically made during the first quarter of the year. Payments 
of $4.4 million, $6.5 million and $7.0 million were made during the years ended December 31, 2015, 2014, and 2013, respectively. 
The grant date fair value was $4.2 million, $6.6 million and $7.8 million for awards in 2015, 2014 and 2013, respectively. The 
unaccrued cost associated with unvested outstanding grants and related DERs at December 31, 2015 and December 31, 2014, was 
$0.7 million and $5.2 million, respectively.

32

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

17.  Supplementary Unrestricted Subsidiary Information

The following is presented as supplementary data as required by the Indenture governing the NRP Senior Notes due 2018 
(the "Indenture"). As described in Note 2. Summary of Significant Accounting Policies, in February 2016, the Partnership designated 
NRP Oil and Gas, a wholly owned subsidiary of NRP, as an Unrestricted Subsidiary for purposes of the Indenture. In addition, the 
Partnership has designated BRP LLC, a joint venture in which the Partnership owns a 51% interest, and Coval Leasing Company, 
LLC, a wholly owned subsidiary of BRP LLC, as Unrestricted Subsidiaries for purposes of the Indenture. The information below 
may not necessarily be indicative of the results of operations, or financial position had the subsidiaries operated as independent 
entities. There were no transactions between the Partnership and its Restricted Subsidiaries and its Unrestricted Subsidiaries. In 
accordance  with  the  requirements  of  the  Indenture,  the  following  condensed  consolidating  financial  information  presents  the 
financial condition and results of operations of the Partnership and its Restricted Subsidiaries and its Unrestricted Subsidiaries:

CONDENSED CONSOLIDATING BALANCE SHEETS
(in thousands)

ASSETS

Current assets (including affiliates)
Mineral rights, net
Equity in unconsolidated investment
Other non-current assets (including affiliates)

Total assets

LIABILITIES AND CAPITAL

Current portion of long-term debt, net
Other current liabilities (including affiliates)
Long-term debt, net (including affiliate)
Other non-current liabilities (including affiliates)
Partners' capital
Non-controlling interest

Total liabilities and capital

ASSETS

Current assets (including affiliates)
Mineral rights, net
Equity in unconsolidated investment
Other non-current assets (including affiliates)

Total assets

LIABILITIES AND CAPITAL

Current portion of long-term debt, net
Other current liabilities (including affiliates)
Long-term debt, net (including affiliate)
Other non-current liabilities (including affiliates)
Partners' capital
Non-controlling interest

Total liabilities and capital

December 31, 2015

Unrestricted
Subsidiaries
of NRP

NRP and its
Restricted
Subsidiaries

21,540
134,445
—
2,287
158,272

—
7,351
85,000
4,703
64,663
(3,445)
158,272

$

$

$

99,589
959,582
261,942
204,690
1,525,803

80,983
48,313
1,219,013
165,770
11,673
51
1,525,803

December 31, 2014

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

23,842
446,938
—
4,156
474,936

—
16,212
110,000
5,193
344,232
(701)
474,936

$

$

$

112,276
1,334,914
264,020
258,578
1,969,788

80,983
50,736
1,284,240
177,205
376,573
51
1,969,788

$

$

$

$

$

$

$

$

$

$

$

$

Total

121,129
1,094,027
261,942
206,977
1,684,075

80,983
55,664
1,304,013
170,473
76,336
(3,394)
1,684,075

Total

136,118
1,781,852
264,020
262,734
2,444,724

80,983
66,948
1,394,240
182,398
720,805
(650)
2,444,724

33

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(in thousands)

Year Ended December 31, 2015

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

Revenues
Operating expenses
Loss from operations
Other expense
Net loss
Add: comprehensive loss from unconsolidated investment and other

$

$

56,091
361,166
(305,075)
4,065
(309,140)
—

Comprehensive loss

$

(309,140) $

$

432,758
605,594
(172,836)
89,744
(262,580)
(1,693)
(264,273) $

Revenues
Operating expenses
Income from operations
Other expense
Net income
Add: comprehensive loss from unconsolidated investment and other
Comprehensive income

Revenues
Operating expenses
Income from operations
Other expense
Net income
Add: comprehensive income from unconsolidated investment and
other
Comprehensive income

18.    Subsequent Events

Year Ended December 31, 2014

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

56,840
41,754
15,086
662
14,424
—
14,424

$

$

342,912
169,079
173,833
79,427
94,406
(81)
94,325

$

$

Year Ended December 31, 2013

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

$

14,386
8,812
5,574
39
5,535

$

343,731
113,069
230,662
64,119
166,543

—
5,535

$

65
166,608

$

$

$

$

$

Total

488,849
966,760
(477,911)
93,809
(571,720)
(1,693)
(573,413)

Total

399,752
210,833
188,919
80,089
108,830
(81)
108,749

Total

358,117
121,881
236,236
64,158
172,078

65
172,143

The  following  represents  material  events  that  have  occurred  subsequent  to  December 31,  2015  through  the  time  of  the 

Partnership’s filing of its Annual Report on Form 10-K with the SEC:

Distribution Declared

On  February 12, 2016, the Partnership paid a distribution of $0.45 per unit to unitholders of record on February 5, 2016. 

Reverse Unit Split

On January 26, 2016, the board of directors of our general partner approved a 1-for-10 reverse split on our common units, 
effective following market close on February 18, 2016. Pursuant to the authorization provided, the Partnership completed the 1-
for-10 reverse unit split and its common units began trading on a reverse unit split-adjusted basis on the New York Stock Exchange 
on February 18, 2016. As a result of the reverse unit split, every 10 units of issued and outstanding common units were combined 
into one issued and outstanding common unit, without any change in the par value per unit. The reverse unit split reduced the 
34

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

number of common units outstanding from 122.3 million units to approximately 12.2 million units. All units and per unit data 
included in these consolidated financial statements have been retroactively restated to reflect the reverse unit split.

Oil and Gas Royalty Properties Sale

In February 2016, the Partnership sold royalty and overriding royalty interests in several producing properties located in the 
Appalachian Basin for $36.6 million in net cash proceeds and recorded a gain of $20.3 million.  The sale included royalty and 
overriding royalty interests in approximately 765 gross producing wells as of December 31, 2015 and approximately 10% of our 
estimated proved reserves as of December 31, 2015, or 1,094 MBoe. The effective date of the sale was January 1, 2016.

Aggregate Royalty Properties Sale

In February 2016, we sold the aggregates reserves and related royalty rights at three aggregates operations located in Texas, 
Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, of our estimated aggregates reserves as of 
December 31, 2015 for $9.8 million in net cash proceeds and recorded a gain of $1.6 million. The effective date of the sale was 
February 1, 2016.

35

NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES
(Unaudited)

The Partnership prepared the following oil and gas information in accordance with the authoritative guidance for oil and gas 

extractive activities.

Capitalized Costs (in thousands):

Proven properties
Unproven properties

Total property, plant, and equipment
Accumulated depreciation, depletion, and amortization

Net capitalized costs

Costs incurred for property acquisitions, exploration, and development (in thousands):

Property acquisitions
Proven properties
Unproven properties

Development
Total

Results of Operations for Producing Activities (in thousands):

Production revenue
Royalty and overriding royalty revenue (1)
Total oil and gas related revenue
Operating costs and expense:

Depreciation, depletion and amortization
Property, franchise and other taxes
Production costs
Impairment of oil and gas properties
Total operating costs and expense
Total income from operations

For the Years  Ended
December 31,

2015

2014

199,404
—
199,404
(60,542)
138,862

$

$

392,153
46,400
438,553
(18,993)
419,560

For the Years  Ended
December 31,

2015

2014

— $
—
29,080
29,080

$

298,627
40,800
5,340
344,767

For the Years  Ended
December 31,

2015

2014

$

49,201
4,364
53,565

40,772
5,210
12,871
367,576
426,429
(372,864) $

48,834
10,732
59,566

23,936
5,529
12,544
—
42,009
17,557  

$

$

$

$

$

$

(1) Includes $0.4 million and $1.9 million for the years ended December 31, 2015 and 2014, respectively of nonproduction 

revenues including lease bonus payments

Estimated Proved Reserves

Proved reserves are those quantities of crude oil and natural gas, which, by analysis of geoscience and engineering data, can 
be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under 
existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the 
right to operate expire, unless evidence indicates renewal is reasonably certain. In connection with the estimation of proved reserves, 
the term "reasonable certainty" implies a high degree of confidence that the quantities of crude oil, natural gas liquids and/or natural 
gas actually recovered will equal or exceed the estimate. The Partnership estimated proved reserves as of December 31, 2015 and 
2014 were prepared by Netherland, Sewell & Associates, Inc., the Partnership’s independent reserve engineer. To achieve reasonable 
certainty, Netherland Sewell employed technologies that have been demonstrated to yield results with consistency and repeatability. 
The technologies and economic data used in the estimation of the Partnership’s proved reserves include, but are not limited to, 
well  logs,  geologic  maps  including  isopach  and  structure  maps,  analogy  and  statistical  analysis,  and  available  downhole  and 
production data and well test data. Netherland Sewell prepared its report covering properties representing 100% of the Partnership’s 
estimated proved reserves as of December 31 2015 and 2014. Prices were calculated using the unweighted average of the first-

36

 
 
 
NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES
(Unaudited)

day-of-the-month  pricing  for  the  twelve  months  ended  December  31,  2015  and  2014.  These  prices  were  then  adjusted  for 
transportation and other costs. There can be no assurance that the proved reserves will be produced as estimated or that the prices 
and costs will remain constant. There are numerous uncertainties inherent in estimating reserves and related information and 
different reserve engineers often arrive at different estimates for the same properties. A copy of Netherland Sewell’s summary 
report is included as Exhibit 99.2 to this Annual Report on Form 10-K.

The following tables shows our estimated domestic proved reserves and reserve additions and revisions: 

December 31, 2014

Revisions of previous estimates
Extensions, discoveries and other additions
Sales of properties
Production

December 31, 2015 (1)

Proved developed reserves as of December 31, 2015
Proved undeveloped reserves as of December 31, 2015

Proved developed reserves as of December 31, 2014
Proved undeveloped reserves as of December 31, 2014

Crude
Oil
(MBbl)

NGLs
(MBbl)

Natural
Gas
(MMcf)(2)

Total
Proved
Reserves
(MBoe)(3)

9,983
(1,451)
776
(98)
(1,136)
8,074

7,862
212

8,930
1,053

1,229
89
60
—
(156)
1,222

1,196
26

1,098
131

14,370
701
541
(62)
(2,226)
13,324

13,157
167

13,161
1,209

13,607
(1,244)
926
(108)
(1,663)
11,518

11,251
267

12,221
1,386

(1)  Includes reserves attributable to the Partnership's 51% member interest in BRP LLC.

(2)  Natural gas is converted on the basis of six Mcf of gas per one Bbl of oil equivalent. This ratio reflects an energy content 

equivalency and not a price or revenue equivalency.

(3)  Includes 10,063MBoe of estimated proved reserves attributable to the Partnership’s non-operated working interests in 
oil and natural gas properties in the Williston Basin, approximately 3% of which were proved undeveloped reserves.

The standardized measure of discounted future net cash flows from our estimated proved oil and gas reserves is as follows 

(in thousands):

For the Years  Ended
December 31,

2015

2014

$

364,352

$

920,454

(164,649)
(7,826)
191,877
(75,524)
116,353

$

(312,666)
(20,072)
587,716
(282,519)
305,197

Future cash inflows
Less related future:
Production costs
Development and abandonment costs

Future net cash flows before 10% discount
Discount to present value at a 10% annual rate

Total standardized measure of discounted net cash flows

$

37

 
 
NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES
(Unaudited)

The table below is a summary of the changes in the standardized measure of discounted future net cash flows for our proved 

oil and gas reserves during the year ended December 31, 2015 (in thousands):

Beginning of the period

Revisions to previous estimates:
Changes in prices and costs
Changes in quantities
Changes in future development costs

Previously estimated development costs incurred during the period
Additions to proved reserves from extensions, discoveries and improved recovery, less related costs
Purchases and sales of reserves in place, net
Accretion of discount
Sales of oil and gas, net of production costs
Production timing and other
Net increase (decrease)

End of period

$

305,197

(188,946)
(11,750)
(12,202)
29,080
11,928
(3,851)
31,795
(35,112)
(9,786)
(188,844)
116,353

$

38

NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL QUARTERLY INFORMATION 
(Unaudited)

Quarterly Financial Data 

The following table summarizes quarterly financial data for 2015 and 2014 (in thousands, except per unit data):

2015
Total revenues and other income

Depreciation, depletion and amortization

Asset impairment

Income (loss) from operations

Net income (loss)

Net income (loss) per limited partner unit

Weighted average number of common units
outstanding

2014
Total revenues and other income
Depreciation, depletion and amortization
Asset impairment
Income from operations
Net income
Net income per limited partner unit
Weighted average number of common units
outstanding

First
Quarter
$ 109,677

$ 25,392

$

—

$ 40,417

$ 17,489

$

1.40

Second
Quarter
$ 137,630

$ 30,660

Third
Quarter
$ 125,479

$ 26,624

Fourth
Quarter
$ 116,063

$ 18,152

$

3,803 (1)

$ 55,920

$ 32,578

$

2.50

$ 626,838 (2)
$(576,290)
$(600,001)
(47.90)
$

$ 50,953 (3)

$
2,042
$ (21,786)
(1.75)
$

Total
2015
$ 488,849

$ 100,828

$ 681,594
$(477,911)
$(571,720)
(45.75)
$

12,230

12,230

12,230

12,230

12,230

First
Quarter
$ 80,309
$ 14,647
$
—
$ 52,439
$ 32,605
2.90
$

Second
Quarter
$ 90,561
$ 16,350
$
$ 50,403
$ 31,407
2.80
$

5,624 (4)

Third
Quarter
$ 91,609
$ 18,621
$
—
$ 55,027
$ 36,173
3.20
$

Fourth
Quarter
$ 137,273
$ 30,258
$ 20,585 (5)
$ 31,050
8,645
$
0.70
$

Total
2014
$ 399,752
$ 79,876
26,209
$ 188,919
$ 108,830
9.42
$

10,985

11,040

11,124

12,145

11,326

(1)  During the second quarter of 2015 we recorded a $2.3 million impairment expense related to a coal preparation plant and 

a $1.5 million impairment expense related to coal mineral rights.

(2)  During the third quarter of 2015 we recorded $335.7 million of oil and gas property impairment, $247.8 million of coal 

property impairment and $43.4 million of aggregates property impairment. 

(3)  During the fourth quarter of 2015 we recorded $31.9 million of oil and gas property impairment, $8.2 million of coal 
property impairment, $5.5 million of goodwill impairment, $4.7 million related to coal processing and transportation assets 
as well as obsolete equipment at our Logan office as well as a $0.7 million impairment expense related to obsolete plant 
and equipment at VantaCore.

(4)  During the second quarter of 2014, we recorded $5.6 million of intangible asset impairment related to an aggregates lease.

(5)  During the fourth quarter of 2014, we recorded $16.8 million of coal property impairment and $3.0 million of aggregates 
property impairment as well as $0.8 million in impairment expense related to a coal preparation plant. that began with 
current realized pricing as of the measurement date and included an adjustment for risk related to the future realization of 
cash flows.

39

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused 

this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 14, 2016

Date: March 14, 2016

Date: March 14, 2016

NATURAL RESOURCE PARTNERS L.P.
By: NRP (GP) LP, its general partner
By: GP NATURAL RESOURCE

PARTNERS LLC, its general partner

By:

/(cid:86)/     CORBIN J. ROBERTSON, JR.      

Corbin J. Robertson, Jr.
Chairman of the Board and
Chief Executive Officer
(Principal Executive Officer)

By:

/(cid:86)/     CRAIG W. NUNEZ      

Craig W. Nunez
Chief Financial Officer and
Treasurer
(Principal Financial Officer)

By:

/(cid:86)/     CHRISTOPHER J. ZOLAS
Christopher J. Zolas

Chief Accounting Officer

(Principal Accounting Officer)

40

 
 
 
 
 
 
 
 
 
 
 
 
ITEM 15.  EXHIBITS

Exhibit
Number
2.1

2.2

2.3

3.1

3.2

3.3

3.4

3.5

4.1

4.2

4.3

—

—

—

—

—

—

—

—

—

—

—

Description

Purchase Agreement, dated as of January 23, 2013, by and among Anadarko Holding Company, Big
Island Trona Company, NRP Trona LLC and NRP (Operating) LLC (incorporated by reference to Exhibit
2.1 to Current Report on Form 8-K filed on January 25, 2013).

Agreement and Plan of Merger, dated as of August 18, 2014, by and among VantaCore Partners LP,
VantaCore LLC, the Holders named therein, Natural Resource Partners L.P., NRP (Operating) LLC and
Rubble Merger Sub, LLC (incorporated by reference to Exhibit 2.1 to Current Report on Form 8-K filed
on August 20, 2014).

Interest Purchase Agreement, by and among NRP Oil and Gas LLC, Kaiser-Whiting, LLC and the
Owners of Kaiser-Whiting, LLC dated as of October 5, 2014 (incorporated by reference to Current
Report on Form 8-K filed on October 6, 2014).

Fourth Amended and Restated Agreement of Limited Partnership of Natural Resource Partners L.P., dated
as of September 20, 2010 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed
on September 21, 2010).

Fifth Amended and Restated Agreement of Limited Partnership of NRP (GP) LP, dated as of December
16, 2011 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on December 16,
2011).
Fifth Amended and Restated Limited Liability Company Agreement of GP Natural Resource Partners
LLC, dated as of October 31, 2013 (incorporated by reference to Exhibit 3.1 to Current Report on Form
8-K filed on October 31, 2013).

Amended and Restated Limited Liability Company Agreement of NRP (Operating) LLC, dated as of
October 17, 2002 (incorporated by reference to Exhibit 3.4 of Annual Report on Form 10-K for the year
ended December 31, 2002).

Certificate of Limited Partnership of Natural Resource Partners L.P.(incorporated by reference to Exhibit
3.1 to the Registration Statement on Form S-1 filed April 19, 2002, File No. 333-86582).

Note Purchase Agreement dated as of June 19, 2003 among NRP (Operating) LLC and the Purchasers
signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K filed June 23,
2003).

First Amendment, dated as of July 19, 2005, to Note Purchase Agreement dated as of June 19, 2003
among NRP (Operating) LLC and the purchasers signatory thereto (incorporated by reference to Exhibit
4.2 to Current Report on Form 8-K filed on July 20, 2005).

Second Amendment, dated as of March 28, 2007, to Note Purchase Agreement dated as of June 19, 2003
among NRP (Operating) LLC and the purchasers signatory thereto (incorporated by reference to Exhibit
4.2 to Current Report on Form 8-K filed on March 29, 2007).

41

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number
4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

4.12

4.13

4.14

4.15

4.16

4.17

4.18

4.19

4.20

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Description

First Supplement to Note Purchase Agreement, dated as of July 19, 2005 among NRP (Operating) LLC
and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on Form
8-K filed on July 20, 2005).

Second Supplement to Note Purchase Agreement, dated as of March 28, 2007 among NRP (Operating)
LLC and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on
Form 8-K filed on March 29, 2007).

Third Supplement to Note Purchase Agreement, dated as of March 25, 2009 among NRP (Operating)
LLC and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on
Form 8-K filed on March 26, 2009).

Fourth Supplement to Note Purchase Agreement, dated as of April 20, 2011 among NRP (Operating)
LLC and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on
Form 8-K filed on April 21, 2011).

Subsidiary Guarantee of Senior Notes of NRP (Operating) LLC, dated June 19, 2003 (incorporated by
reference to Exhibit 4.5 to Current Report on Form 8-K filed June 23, 2003).

Form of Series A Note (incorporated by reference to Exhibit 4.2 to Current Report on Form 8-K filed
June 23, 2003).

Form of Series B Note (incorporated by reference to Exhibit 4.3 to Current Report on Form 8-K filed
June 23, 2003).

Form of Series D Note (incorporated by reference to Exhibit 4.12 to Annual Report on Form 10-K filed
February 28, 2007).

Form of Series E Note (incorporated by reference to Exhibit 4.3 to Current Report on Form 8-K filed
March 29, 2007).

Form of Series F Note (incorporated by reference to Exhibit 4.2 to Quarterly Report on Form 10-Q filed
May 7, 2009).

Form of Series G Note (incorporated by reference to Exhibit 4.3 to Quarterly Report on Form 10-Q filed
May 7, 2009).

Form of Series H Note (incorporated by reference to Exhibit 4.2 to Quarterly Report on Form 10-Q filed
May 5, 2011).

Form of Series I Note (incorporated by reference to Exhibit 4.3 to Quarterly Report on Form 10-Q filed
May 5, 2011).

Form of Series J Note (incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K filed on
June 15, 2011).

Form of Series K Note (incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K filed on
October 3, 2011).

Registration Rights Agreement, dated as of January 23, 2013, by and among Natural Resource Partners
L.P. and the Investors named therein (incorporated by reference to Exhibit 4.1 to Current Report on Form
8-K filed on January 25, 2013).

Amendment No. 1 to Fourth Amended and Restated Agreement of Limited Partnership of Natural
Resource Partners L.P., dated March 6, 2012 (incorporated by reference to Exhibit 4.1 to Quarterly
Report on Form 10-Q filed on August 7, 2012).

42

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.21

4.22

4.23

4.24

10.1

—

—

10.2

—

10.3

—

10.4*** —

10.5*** —

10.6

—

Description

—

Indenture, dated September 18, 2013, by and among Natural Resource Partners L.P. and NRP Finance
Corporation, as issuers, and Wells Fargo Bank, National Association, as trustee (incorporated by reference to
Exhibit 4.1 to Current Report on Form 8-K filed on September 19, 2013).
—   Form of 9.125% Senior Notes due 2018 (contained in Exhibit 1 to Exhibit 4.22).
—

9.125% Senior Note due 2018 in $20,000,000 aggregate principal amount issued by Natural Resource
Partners L.P. and NRP Finance Corporation to Cline Trust Company, LLC, dated October 17, 2014
(incorporated by reference to Exhibit 4.3 to Current Report on Form 8-K filed on October 20, 2014).

Third Amendment, dated as of June 16, 2015, to Note Purchase Agreements, dated as of June 19, 2003,
among NRP (Operating) LLC and the holders named therein (incorporated by reference to Exhibit 4.1 to
Current Report on Form 8-K filed on June 18, 2015).

Third Amended and Restated Credit Agreement, dated as of June 16, 2015, by and among NRP (Operating)
LLC, the lenders party thereto, Citibank, N.A. as Administrative Agent and Collateral Agent, Citigroup
Global Markets Inc. and Wells Fargo Securities LLC as Joint Lead Arrangers and Joint Bookrunners, and
Citibank, N.A., as Syndication Agent (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-
K filed on June 18, 2015).

Contribution Agreement, dated as of September 20, 2010, by and among Natural Resource Partners L.P., NRP
(GP) LP, Western Pocahontas Properties Limited Partnership, Great Northern Properties Limited Partnership,
New Gauley Coal Corporation and NRP Investment L.P. (incorporated by reference to Exhibit 10.1 to Current
Report on Form 8-K filed on September 21, 2010).

Natural Resource Partners Second Amended and Restated Long-Term Incentive Plan (incorporated by
reference to Exhibit 10.1 to Current Report on Form 8-K filed on January 17, 2008).

Form of Phantom Unit Agreement (incorporated by reference to Exhibit 10.4 to Annual Report on Form 10-K
for the year ended December 31, 2007).

Natural Resource Partners Annual Incentive Plan (incorporated by reference to Exhibit 10.4 to Annual Report
on Form 10-K for the year ended December 31, 2002).

First Amended and Restated Omnibus Agreement, dated as of April 22, 2009, by and among Western
Pocahontas Properties Limited Partnership, Great Northern Properties Limited Partnership, New Gauley Coal
Corporation, Robertson Coal Management LLC, GP Natural Resource Partners LLC, NRP (GP) LP, Natural
Resource Partners L.P. and NRP (Operating) LLC (incorporated by reference to Exhibit 10.1 to Quarterly
Report on Form 10-Q filed May 7, 2009).

10.7

—

Restricted Business Contribution Agreement, dated January 4, 2007, by and among Christopher Cline,
Foresight Reserves LP, Adena Minerals, LLC, GP Natural Resource Partners LLC, NRP (GP) LP, Natural
Resource Partners L.P. and NRP (Operating) LLC (incorporated by reference to Exhibit 10.1 to Current
Report on Form 8-K filed on January 4, 2007).

10.8

—

Investor Rights Agreement, dated January 4, 2007, by and among NRP (GP) LP, GP Natural Resource
Partners LLC, Robertson Coal Management and Adena Minerals, LLC (incorporated by reference to Exhibit
10.2 to Current Report on Form 8-K filed on January 4, 2007).

43

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

10.9

—

10.10

10.11

10.12

10.13

10.14

10.15

10.16***

10.17***

10.18***

21.1+

23.1*

—

—

—

—

Description
Waiver Agreement, dated November 12, 2009, by and among Natural Resource Partners L.P., Great Northern
Properties Limited Partnership, Western Pocahontas Properties Limited Partnership, New Gauley Coal
Corporation, Robertson Coal Management LLC, GP Natural Resource Partners LLC, NRP (GP) LP, and
NRP (Operating) LLC (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on
November 13, 2009).

Common Unit Purchase Agreement, dated January 23, 2013, by and among Natural Resource Partners, L.P.
and the purchasers named therein (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K
filed on January 25, 2013).

Limited Liability Company Agreement of Ciner Wyoming LLC (formerly OCI Wyoming LLC), dated
June 30, 2014 (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed by Ciner
Resources LP (formerly OCI Resources LP) on July 2, 2014).

Amendment No. 1 to the Amended and Restated Limited Liability Company Agreement of Ciner Resource
Partners LLC (formerly known as OCI Resource Partners LLC), dated November 5, 2015 (incorporated by
reference to Exhibit 3.4 to Current Report on Form 8-K filed by Ciner Resources LP (formerly OCI
Resources LP) on November 5, 2015).

Credit Agreement, dated as of August 12, 2013, among NRP Oil and Gas LLC, Wells Fargo Bank, N.A., as
Administrative Agent, and Wells Fargo Securities, LLC as Sole Bookrunner and Sole Lead Arranger
(incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on August 13, 2013).

First Amendment to Credit Agreement, dated effective as of December 19, 2013, among NRP Oil and Gas
LLC, Wells Fargo Bank, N.A., as Administrative Agent, and Wells Fargo Securities, LLC as Sole
Bookrunner and Sole Lead Arranger (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-
K filed on December 20, 2013).

Second Amendment to Credit Agreement entered into effective as of November 12, 2014 among NRP Oil
and Gas LLC, each of the Lenders that is a signatory thereto, and Wells Fargo Bank, N.A., as administrative
agent for the Lenders (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on
November 14, 2014).

Natural Resource Partners L.P. 2016 Cash Long-Term Incentive Plan (incorporated by reference to Exhibit
10.1 to Current Report on Form 8-K filed on February 26, 2016).

Form of Long-Term Incentive Award Agreement (incorporated by reference to Exhibit 10.2 to Current
Report on Form 8-K filed on February 26, 2016).

Form of Long-Term Performance Award Agreement (incorporated by reference to Exhibit 10.3 to Current
Report on Form 8-K filed on February 26, 2016).
—   List of subsidiaries of Natural Resource Partners L.P.
—   Consent of Ernst & Young LLP.

44

 
 
 
 
 
 
 
Exhibit
Number

23.2*

23.3+

31.1*

31.2*

32.1**

32.2**

95.1+

99.1

99.2+

99.3+

Description

—   Consent of Deloitte & Touche LLP.
—   Consent of Netherland, Sewell & Associates, Inc.
—   Certification of Chief Executive Officer pursuant to Section 302 of Sarbanes-Oxley.
—   Certification of Chief Financial Officer pursuant to Section 302 of Sarbanes-Oxley.
—   Certification of Chief Executive Officer pursuant to 18 U.S.C. § 1350.
—   Certification of Chief Financial Officer pursuant to 18 U.S.C. § 1350.
—   Mine Safety Disclosure.
—

Description of certain provisions of the Fourth Amended and Restated Agreement of Limited Partnership of
Natural Resource Partners L.P. (incorporated by reference to Exhibit 99.1 to Current Report on Form 8-K
filed on September 21, 2010).

—   Report of Netherland, Sewell & Associates, Inc.
—

Financial Statements of Ciner Wyoming LLC as of and for the years ended December 31, 2015, 2014 and
2013.

101.INS* —   XBRL Instance Document
101.SCH* —   XBRL Taxonomy Extension Schema Document
101.CAL* —   XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF* —   XBRL Taxonomy Extension Definition Linkbase Document
101.LAB* — XBRL Taxonomy Extension Labels Linkbase Document
101.PRE* — XBRL Taxonomy Extension Presentation Linkbase Document

*

**

***

+

Filed herewith

Furnished herewith

Management compensatory plan or arrangement

filed on March 11, 2016.

45

 
 
 
Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statements (Form S-3 No. 333-207034, 
Form S-3 No. 333-183314, and Form S-3 No. 333-187883) of Natural Resource Partners L.P., and the related 
prospectus of our reports dated March 11, 2016, with respect to the consolidated financial statements of 
Natural Resource Partners L.P., and the effectiveness of internal control over financial reporting of Natural 
Resource Partners L.P., included in this Annual Report on Form 10-K/A.

/s/    Ernst & Young LLP

Houston, Texas
March 14, 2016

 
Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statements on Form S-3 (Nos. 333-207034, 
333-183314, and 333-187883) of Natural Resource Partners L.P., of our report dated March 11, 2016, relating 
to the financial statements of Ciner Wyoming LLC as of December 31, 2015 and 2014, and for the three 
years in the period ended December 31, 2015, appearing in this Annual Report on Form 10-K/A of Natural 
Resource Partners L.P. for the year ended December 31, 2015.

/s/  Deloitte & Touche LLP

Atlanta, Georgia
March 14, 2016

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Corbin J. Robertson, Jr., certify that: 

1

2

3

4

I have reviewed this report on Form 10-K/A of Natural Resource Partners L.P.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.

b.

c.

d.

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures 
to be designed under our supervision, to ensure that material information relating to the registrant, 
including its consolidated subsidiaries, is made known to us by others within those entities, particularly 
during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability 
of financial reporting and the preparation of financial statements for external purposes in accordance 
with generally accepted accounting principles;

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end 
of the period covered by this report based on such evaluation; and

Disclosed in this report any change in the registrant’s internal control over financial reporting that 
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the 
case of an annual report) that has materially affected, or is reasonably likely to materially affect, the 
registrant’s internal control over financial reporting; and

5

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons 
performing the equivalent functions);

a.

b.

All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, 
process, summarize and report financial information; and

Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a 
significant role in the registrant’s internal control over financial reporting.

By:

  /s/ Corbin J. Robertson, Jr.
  Corbin J. Robertson, Jr.
  Chief Executive Officer

Date: March 14, 2016

 
 
 
 
 
 
Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Craig W. Nunez, certify that:

1.

2.

3.

4.

I have reviewed this report on Form 10-K/A of Natural Resource Partners L.P.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.

b.

c.

d.

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures 
to be designed under our supervision, to ensure that material information relating to the registrant, 
including its consolidated subsidiaries, is made known to us by others within those entities, particularly 
during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability 
of financial reporting and the preparation of financial statements for external purposes in accordance 
with generally accepted accounting principles;

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end 
of the period covered by this report based on such evaluation; and

Disclosed in this report any change in the registrant’s internal control over financial reporting that 
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the 
case of an annual report) that has materially affected, or is reasonably likely to materially affect, the 
registrant’s internal control over financial reporting; and

5.

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons 
performing the equivalent functions);

a.

b.

All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, 
process, summarize and report financial information; and

Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a 
significant role in the registrant’s internal control over financial reporting.

By:

  /s/ Craig W. Nunez
  Craig W. Nunez
  Chief Financial Officer

Date: March 14, 2016

 
 
 
 
 
 
 
CERTIFICATION OF
CHIEF EXECUTIVE OFFICER
OF GP NATURAL RESOURCE PARTNERS LLC
PURSUANT TO 18 U.S.C. § 1350

Exhibit 32.1

In connection with the accompanying report on Form 10-K/A for the year ended December 31, 2015 filed with the Securities 
and Exchange Commission on the date hereof (the “Report”), I, Corbin J. Robertson, Jr., Chief Executive Officer of GP Natural 
Resource Partners LLC, the general partner of the general partner of Natural Resource Partners L.P. (the “Company”), hereby 
certify, to my knowledge, that:

1.

2.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

By:

  /s/ Corbin J. Robertson, Jr.
  Corbin J. Robertson, Jr.
  Chief Executive Officer

Date: March 14, 2016

CERTIFICATION OF
CHIEF FINANCIAL OFFICER
OF GP NATURAL RESOURCE PARTNERS LLC
PURSUANT TO 18 U.S.C. § 1350

Exhibit 32.2

In connection with the accompanying report on Form 10-K/A for the year ended December 31, 2015 filed with the Securities 
and Exchange Commission on the date hereof (the “Report”), I, Craig W. Nunez, Chief Financial Officer of GP Natural Resource 
Partners LLC, the general partner of the general partner of Natural Resource Partners L.P. (the “Company”), hereby certify, to my 
knowledge, that:

1.

2.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

By:

  /s/ Craig W. Nunez
  Craig W. Nunez
  Chief Financial Officer

Date: March 14, 2016

 
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
OF 1934

For the fiscal year ended December 31, 2015 or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934

For the transition period from                      to                     
Commission file number: 1-31465

NATURAL RESOURCE PARTNERS L.P.

(cid:11)(cid:40)(cid:91)(cid:68)(cid:70)(cid:87)(cid:3)(cid:81)(cid:68)(cid:80)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:85)(cid:72)(cid:74)(cid:76)(cid:86)(cid:87)(cid:85)(cid:68)(cid:81)(cid:87)(cid:3)(cid:68)(cid:86)(cid:3)(cid:86)(cid:83)(cid:72)(cid:70)(cid:76)(cid:73)(cid:76)(cid:72)(cid:71)(cid:3)(cid:76)(cid:81)(cid:3)(cid:76)(cid:87)(cid:86)(cid:3)(cid:70)(cid:75)(cid:68)(cid:85)(cid:87)(cid:72)(cid:85)(cid:12)

Delaware
(cid:11)(cid:54)(cid:87)(cid:68)(cid:87)(cid:72)(cid:3)(cid:82)(cid:85)(cid:3)(cid:82)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:77)(cid:88)(cid:85)(cid:76)(cid:86)(cid:71)(cid:76)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:82)(cid:73)(cid:3)(cid:76)(cid:81)(cid:70)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:82)(cid:85)(cid:3)(cid:82)(cid:85)(cid:74)(cid:68)(cid:81)(cid:76)(cid:93)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:12)

35-2164875
(cid:11)(cid:44)(cid:17)(cid:53)(cid:17)(cid:54)(cid:17)(cid:3)(cid:40)(cid:80)(cid:83)(cid:79)(cid:82)(cid:92)(cid:72)(cid:85)(cid:3)(cid:44)(cid:71)(cid:72)(cid:81)(cid:87)(cid:76)(cid:73)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:49)(cid:88)(cid:80)(cid:69)(cid:72)(cid:85)(cid:12)

1201 Louisiana Street, Suite 3400, Houston, Texas 77002
(cid:11)(cid:36)(cid:71)(cid:71)(cid:85)(cid:72)(cid:86)(cid:86)(cid:3)(cid:82)(cid:73)(cid:3)(cid:83)(cid:85)(cid:76)(cid:81)(cid:70)(cid:76)(cid:83)(cid:68)(cid:79)(cid:3)(cid:72)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:82)(cid:73)(cid:73)(cid:76)(cid:70)(cid:72)(cid:86)(cid:12)

Registrant's telephone number, including area code (713) 751-7507

Securities registered pursuant to Section 12(b) of the Act:

Title of each class
Common Units representing limited partnership interests

Name of each exchange on which registered
New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  

        No  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  

        No  

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange 
Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been 
subject to such filing requirements for the past 90 days.    Yes  

        No  

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive 
Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months 
(or for such shorter period that the registrant was required to submit and post such files).    Yes  

        No  

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained 
herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference 
in Part III of this Form 10-K or any amendment to this Form 10-K.  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting 
company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange 
Act.

Large Accelerated Filer

Accelerated Filer

Non-accelerated Filer

Smaller Reporting Company

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2)    Yes  

        No  

The aggregate market value of the common units held by non-affiliates of the registrant was approximately $295.0 million on June 30, 
2015 based on a price of $37.90 per unit, which was the closing price of the common units as reported on the New York Stock Exchange (after 
giving effect to the one-for-ten reverse unit split effective on February 17, 2016).

As of March 1, 2016, there were 12.2 million common units outstanding.                   Documents incorporated by reference: None.

 
 
Items 1. and 2. Business and Properties

TABLE OF CONTENTS

PART I

Item 1A.

Item 1B.

Item 3.

Item 4.

Item 5.

Item 6.

Item 7.
Item 7A.

Item 8.

Item 9.

Item 9A.

Item 9B.

Item 10.

Item 11.

Item 12.

Item 13.

Item 14.

Risk Factors

Unresolved Staff Comments

Legal Proceedings

Mine Safety Disclosures

PART II

Market for Registrant’s Common Equity, Related Unitholder Matters and Issuer Purchases of Equity 
Securities

Selected Financial Data

Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosures About Market Risk

Financial Statements and Supplementary Data

Changes In and Disagreements with Accountants on Accounting and Financial Disclosure

Controls and Procedures

Other Information

Directors and Executive Officers of the Managing General Partner and Corporate Governance

PART III

Executive Compensation

Security Ownership of Certain Beneficial Owners and Management

Certain Relationships and Related Transactions, and Director Independence

Principal Accountant Fees and Services

Item 15.

Signatures

Exhibits, Financial Statement Schedules

PART IV

1

25

41

41

41

42

43

46

72

74

114

114

115

116

122

133

134

140

144

149

i

CAUTIONARY STATEMENT 
REGARDING FORWARD-LOOKING STATEMENTS

Statements included in this Annual Report on Form 10-K may constitute forward-looking statements. All statements, other 
than statements of historical facts, included herein or incorporated herein by reference are "forward-looking statements." In addition, 
we and our representatives may from time to time make other oral or written statements which are also forward-looking statements. 
Such forward-looking statements include, among other things, statements regarding:

• 

• 

• 

• 

• 

• 

• 

• 

our business strategy;

our liquidity and access to capital and financing sources;

our financial strategy;

prices of and demand for coal, trona and soda ash, construction aggregates, crude oil and natural gas, frac sand and other 
natural resources;

estimated revenues, expenses and results of operations;

the amount, nature and timing of capital expenditures;

our ability to make acquisitions and integrate the acquisitions we do make;

projected production levels by our lessees, VantaCore Partners LLC ("VantaCore"), and the operators of our oil and gas 
working interests;

•  Ciner Wyoming LLC’s ("Ciner Wyoming") trona mining and soda ash refinery operations;

• 

the impact of governmental policies, laws and regulations, as well as regulatory and legal proceedings involving us, and 
of scheduled or potential regulatory or legal changes; and

• 

global and U.S. economic conditions.

These forward-looking statements speak only as of the date hereof and are made based upon our current plans, expectations, 
estimates, assumptions and beliefs concerning future events impacting us and therefore involve a number of risks and uncertainties. 
We caution that forward-looking statements are not guarantees and that actual results could differ materially from those expressed 
or implied in the forward-looking statements.

You should not put undue reliance on any forward-looking statements. See "Item 1A. Risk Factors" in this Annual Report 

on Form 10-K for important factors that could cause our actual results of operations or our actual financial condition to differ.

ii

PART I

As used in this Part I, unless the context otherwise requires: "we," "our," "us" and the "Partnership" refer to Natural Resource 
Partners L.P. and, where the context requires, our subsidiaries. References to "NRP" and "Natural Resource Partners" refer to 
Natural Resource Partners L.P. only, and not to NRP (Operating) LLC or any of Natural Resource Partners L.P.’s subsidiaries. 
References to "Opco" refer to NRP (Operating) LLC, a wholly owned subsidiary of NRP, and its subsidiaries. References to NRP 
Oil and Gas refer to NRP Oil and Gas LLC, a wholly owned subsidiary of NRP. NRP Finance Corporation ("NRP Finance") is a 
wholly owned subsidiary of NRP and a co-issuer with NRP on the 9.125% senior notes.

ITEMS 1. AND 2.  BUSINESS AND PROPERTIES

Partnership Structure and Management

We are a publicly traded Delaware limited partnership formed in 2002. We own, operate, manage and lease a diversified 
portfolio of mineral properties in the United States, including interests in coal, trona and soda ash, construction aggregates, crude 
oil and natural gas, frac sand and other natural resources. Our business is organized into four operating segments:

Coal, Hard Mineral Royalty and Other—consists primarily of coal royalty, coal related transportation and processing 
assets, aggregate and industrial minerals royalty assets and timber. Our coal reserves are primarily located in Appalachia, the 
Illinois Basin and the Western United States. Our aggregates and industrial minerals are located in a number of states across the 
United States.  

Soda Ash—consists of the Partnership's 49% non-controlling equity interest in a trona ore mining operation and soda ash 
refinery in the Green River Basin, Wyoming. Ciner Resources LP, our operating partner, mines the trona, processes it into soda 
ash, and distributes the soda ash both domestically and internationally into the glass and chemicals industries. We receive regular 
quarterly distributions from this business. 

VantaCore—consists of our construction materials business acquired in October 2014 that operates hard rock quarries, an 
underground limestone mine, sand and gravel plants, asphalt plants and marine terminals. VantaCore operates in Pennsylvania, 
West Virginia, Tennessee, Kentucky and Louisiana.  

Oil and Gas—consists of our non-operated working interests, royalty interests and overriding royalty interests in oil and 
natural gas properties. Our primary interests in oil and natural gas producing properties are non-operated working interests located 
in the Williston Basin in North Dakota and Montana. We also own fee mineral, royalty or overriding royalty interests in oil and 
gas properties in several other regions, including the Appalachian Basin, Oklahoma and Louisiana. 

Our Corporate and Financing segment includes functional corporate departments that do not earn revenues. Costs incurred 
by  these  departments  include  corporate  headquarters  and  overhead,  financing,  centralized  treasury  and  accounting  and  other 
corporate-level activity not specifically allocated to a segment.

Effective  for  the  quarter  ended  December  31,  2015,  we  changed  the  organizational  structure  of  the  internal  financial 
information reviewed by our Chief Executive Officer and President and Chief Operating Officer from a single segment to the four 
operating segments and corporate segment described above as a result of the acquisitions that have diversified our natural resource 
asset  base. The  new  segment  alignment  is  presented  for  the  period  ending  December  31,  2015,  with  prior  periods  recast  for 
comparability.

Our operations are conducted through, and our operating assets are owned by, our subsidiaries. We conduct our business 
through two wholly owned operating companies: Opco and NRP Oil and Gas. NRP Oil and Gas holds our non-operated oil and 
gas working interests in the Williston Basin. All of our other operations, including other oil and gas assets, are held by Opco. NRP 
(GP) LP, our general partner, has sole responsibility for conducting our business and for managing our operations. Because our 
general partner is a limited partnership, its general partner, GP Natural Resource Partners LLC, conducts its business and operations, 
and the Board of Directors and officers of GP Natural Resource Partners LLC make decisions on our behalf. Robertson Coal 
Management LLC, a limited liability company wholly owned by Corbin J. Robertson, Jr., owns all of the membership interest in 
GP Natural Resource Partners LLC. Subject to the Investor Rights Agreement with Adena Minerals, LLC ("Adena Minerals"), 
Mr. Robertson is entitled to nominate ten directors to the Board of Directors of GP Natural Resource Partners LLC. Mr. Robertson 
has delegated the right to nominate two of the directors, one of whom must be independent, to Adena Minerals.

1

 
The  senior  executives  and  other  officers  who  manage  NRP  are  employees  of  Western  Pocahontas  Properties  Limited 
Partnership and Quintana Minerals Corporation, companies controlled by Mr. Robertson, and they allocate varying percentages 
of their time to managing our operations. Neither our general partner, GP Natural Resource Partners LLC, nor any of their affiliates 
receive any management fee or other compensation in connection with the management of our business, but they are entitled to 
be reimbursed for all direct and indirect expenses incurred on our behalf.

We have regional offices through which we conduct our operations, the largest of which is located at 5260 Irwin Road, 
Huntington, West Virginia 25705 and the telephone number is (304) 522-5757. Our principal executive office is located at 1201 
Louisiana Street, Suite 3400, Houston, Texas 77002 and our telephone number is (713) 751-7507.

Segment and Geographic Information

The amount of total revenue for each of our operating segments in the last three years is shown below (dollars in thousands). 
For additional operating segment information, please see "Note 3. Segment Information" in the Notes to Consolidated Financial 
Statements under Item 8 in this Annual Report on Form 10-K and "Management's Discussion and Analysis of Financial Condition 
and Results of Operations—Results of Operations" under Item 7 in this Annual Report on Form 10-K, which are both incorporated 
herein by reference.

2015

Revenues

Percentage of total

2014

Revenues

Percentage of total

2013

Revenues

Percentage of total

Coal, Hard 
Mineral Royalty 
and Other

Soda Ash

VantaCore

Oil and Gas

Total

$

$

$

246,353

$

49,918

$

139,013

$

53,565

$

488,849

51%

10%

28%

11%

256,719

$

41,416

$

42,051

$

59,566

$

399,752

64%

10%

11%

15%

306,851

$

34,186

$

— $

17,080

$

358,117

85%

10%

—%

5%

(cid:35)(cid:79)(cid:65)(cid:76)(cid:12)(cid:0)(cid:40)(cid:65)(cid:82)(cid:68)(cid:0)(cid:45)(cid:73)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:50)(cid:79)(cid:89)(cid:65)(cid:76)(cid:84)(cid:89)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:47)(cid:84)(cid:72)(cid:69)(cid:82) (cid:51)(cid:69)(cid:71)(cid:77)(cid:69)(cid:78)(cid:84)

We do not operate any coal mines, but lease our reserves to experienced mine operators under long-term leases that grant 
the operators the right to mine and sell our reserves in exchange for royalty payments. A typical lease has a five- to ten-year base 
term, with the lessee having an option to extend the lease for additional terms. Leases may include the right to renegotiate rents 
and royalties for the extended term. We also own and manage coal related infrastructure assets that generate additional revenues, 
primarily in the Illinois Basin. In addition, we own or lease aggregates and industrial mineral reserves located in a number of states 
across the country. We derive a small percentage of our aggregates and industrial mineral revenues by leasing our owned reserves 
to third party operators who mine and sell the reserves in exchange for royalty payments. 

Under our standard lease, lessees calculate royalty payments due to us and are required to report tons of minerals removed 
as well as the sales prices of the extracted minerals. Therefore, to a great extent, amounts reported as royalty revenue are based 
upon the reports of our lessees. We periodically audit this information by examining certain records and internal reports of our 
lessees, and we perform periodic mine inspections to verify that the information that our lessees have submitted to us is accurate. 
Our audit and inspection processes are designed to identify material variances from lease terms as well as differences between the 
information reported to us and the actual results from each property.

In addition to their royalty obligations, our lessees are often subject to pre-established minimum monthly, quarterly or annual 
payments. These minimum rentals reflect amounts we are entitled to receive even if no mining activity occurred during the period. 
Minimum rentals are usually credited against future royalties that are earned as minerals are produced. 

Because we do not operate any coal mines, our coal royalty business does not bear ordinary operating costs and has limited 
direct exposure to environmental, permitting and labor risks. As operators, our lessees are subject to environmental laws, permitting 

2

requirements and other regulations adopted by various governmental authorities. In addition, the lessees generally bear all labor-
related  risks,  including  retiree  health  care  legacy  costs,  black  lung  benefits  and  workers’  compensation  costs  associated  with 
operating the mines on our coal and aggregates properties. We typically pay property taxes on our properties, which are then 
reimbursed by the coal lessee pursuant to the terms of the lease.

Coal Production and Reserve Information

The following table presents coal production for the year ended December 31, 2015 and coal reserve information as of 

December 31, 2015 for the properties that we owned by major coal region:

Appalachia:
Northern
Central
Southern

Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast
Total

Production

Underground

Surface

Total

Proven and Probable Reserves (1)

(Tons in thousands)

9,562
16,862
3,803
30,227
11,173
4,905
739
47,044

353,565
773,987
78,864
1,206,416
327,293
—
—
1,533,709

—
229,899
12,819
242,718
5,309
38,519
1,958
288,504

353,565
1,003,886
91,683
1,449,134
332,602
38,519
1,958
1,822,213

(1)  In excess of 90% of the reserves presented in this table are currently leased to third parties.

The following table presents the sulfur content, the typical quality of our coal reserves and the type of coal by major coal 

region as of December 31, 2015:

Sulfur Content

Typical Quality (1)

Type of Coal

Compliance
Coal (2)

Low
(<1.0%)

Medium
(1.0%
to
1.5%)

High
(>1.5%)

Total

Heat
Content
(Btu  per
pound)

Sulfur
(%)

(Tons in thousands)

33,204
515,001
64,715
612,920
—

33,204
727,362
70,586
831,152
—

— 38,519
1,958
82
871,629
613,002

905
228,480
16,928
246,313
2,157

—
—
248,470

319,456
48,044
4,169
371,669
330,445

—
—
702,114

353,565
1,003,886
91,683
1,449,134
332,602

38,519
1,958
1,822,213

12,784
13,266
13,397
13,157
11,493

8,800
6,964

2.89
0.89
0.83
1.37
3.28

0.65
0.69

Steam

Met (3)

(Tons in thousands)

353,565
618,829
67,078
1,039,472
332,602

38,519
1,876
1,412,469

—
385,057
24,605
409,662
—

—
82
409,744

Appalachia
Northern
Central
Southern

Total Appalachia

Illinois Basin
Northern Powder
River Basin
Gulf Coast
Total

(1)  Unless otherwise indicated, we present the quality of the coal throughout this Annual Report on Form 10-K on an as-
received basis, which assumes 6% moisture for Appalachian reserves, 12% moisture for Illinois Basin reserves and 25% 
moisture for Northern Powder River Basin reserves.

(2)  Compliance coal, when burned, emits less than 1.2 pounds of sulfur dioxide per million Btu and meets the sulfur dioxide 
emission standards imposed by Phase II of the Clean Air Act without blending with other coals or using sulfur dioxide 
reduction technologies. Compliance coal is a subset of low sulfur coal and is, therefore, also reported within the amounts 
for low sulfur coal.

(3)  For purposes of this table, we have defined metallurgical coal reserves as reserves located in those seams that historically 
have been of sufficient quality and characteristics to be able to be used in the steel making process. Some of the reserves 

3

 
 
 
 
in the metallurgical category can also be used as steam coal. In 2015, approximately 30% of the production and 38% of 
the coal royalty revenues from our properties were from metallurgical coal. 

Methodologies Used in Mineral Reserve Estimation

All of the reserves reported above are recoverable proven or probable reserves as determined by the SEC’s Industry Guide 
7 and are estimated by our internal reserve engineers. The technologies and economic data used by our internal reserve engineers 
in the estimation of our proved reserves include, but are not limited to, drill logs, geophysical logs, geologic maps including 
isopach,  mine,  and  coal  quality,  cross  sections,  statistical  analysis,  and  available  public  production  data. There  are  numerous 
uncertainties inherent in estimating the quantities and qualities of recoverable reserves, including many factors beyond our control. 
Estimates of economically recoverable coal reserves depend upon a number of variable factors and assumptions, any one of which 
may, if incorrect, result in an estimate that varies considerably from actual results. See "Item 1A. Risk Factors—Risks Related to 
Our Business—Our reserve estimates depend on many assumptions that may be inaccurate, which could materially adversely 
affect the quantities and value of our reserves."

Major Coal Producing Properties 

The following is a summary of our major coal producing properties in each region:

(cid:33)(cid:80)(cid:80)(cid:65)(cid:76)(cid:65)(cid:67)(cid:72)(cid:73)(cid:65)(cid:136)(cid:46)(cid:79)(cid:82)(cid:84)(cid:72)(cid:69)(cid:82)(cid:78)(cid:0)(cid:33)(cid:80)(cid:80)(cid:65)(cid:76)(cid:65)(cid:67)(cid:72)(cid:73)(cid:65)

(cid:36)(cid:85)(cid:72)(cid:68)(cid:3)(cid:41)(cid:17)     Area F is located in Randolph and Upshur Counties, West Virginia.  In 2015, approximately 0.5 million tons were 
produced from this property.  We lease this property to Carter Roag Coal Company, a subsidiary of United Coal Company, LLC 
(owned by Metinvest).  Production comes from the Pleasant Hill Sewell Seam deep mine and is trucked to Carter Roag’s preparation 
plant situated at Star Bridge, WV.  The coal produced from this lease is a medium to high volatile metallurgical product and shipped 
via the CSX railroad to Baltimore and then by ocean vessel to Metinvest’s steel mills situated in Ukraine.

(cid:43)(cid:76)(cid:69)(cid:69)(cid:86)(cid:3)(cid:53)(cid:88)(cid:81)(cid:17)     The Hibbs Run property is located in Marion County, West Virginia. In 2015, approximately 8.5 million tons 
were produced from the property by Consolidation Coal Company, a subsidiary of Murray Energy Corporation. Coal from this 
property is produced from longwall mines. The royalty rate for this property is a low fixed rate per ton and has a significant effect 
on the per ton revenue for the region. Coal is shipped by rail to utility customers. 

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The map below shows the location of our major properties in Northern Appalachia.

(cid:33)(cid:80)(cid:80)(cid:65)(cid:76)(cid:65)(cid:67)(cid:72)(cid:73)(cid:65)(cid:136)(cid:35)(cid:69)(cid:78)(cid:84)(cid:82)(cid:65)(cid:76)(cid:0)(cid:33)(cid:80)(cid:80)(cid:65)(cid:76)(cid:65)(cid:67)(cid:72)(cid:73)(cid:65)

(cid:57)(cid:44)(cid:38)(cid:38)(cid:18)(cid:36)(cid:79)(cid:83)(cid:75)(cid:68)(cid:17)    The VICC/Alpha property is located in Wise, Dickenson, Russell and Buchanan Counties, Virginia. In 2015, 
approximately 3.7 million tons were produced from this property. We primarily lease this property to a subsidiary of Alpha Natural 
Resources, Inc. Production comes from both underground and surface mines and is trucked to one of four preparation plants. Coal 
is shipped via both the CSX and Norfolk Southern railroads to utility and metallurgical customers. 

(cid:39)(cid:76)(cid:81)(cid:74)(cid:72)(cid:86)(cid:86)(cid:16)(cid:53)(cid:88)(cid:80)(cid:17)(cid:3)(cid:3)(cid:3)(cid:3)The Dingess-Rum property is located in Logan, Clay and Nicholas Counties, West Virginia. This property 
is leased to subsidiaries of Alpha Natural Resources, Inc. and Blackhawk Mining, LLC. In 2015, approximately 2.4 million tons 
were produced from the property. Both steam and metallurgical coal are produced from underground and surface mines and has 
been historically transported by belt or truck to preparation plants on the property. Coal is shipped via the CSX railroad to utility 
customers and to various export metallurgical customers.

(cid:51)(cid:76)(cid:81)(cid:81)(cid:68)(cid:70)(cid:79)(cid:72)(cid:17)    The Pinnacle property is located in Wyoming and McDowell Counties, West Virginia. In 2015, approximately 
2.4 million tons of metallurgical coal were produced from our reserves on this property. We also own an overriding royalty interest 
on coal produced from the reserves that we do not own at this property, from which we derive additional revenues. We lease the 
property to a subsidiary of ERP Compliant Fuels, LLC, Seneca Resources, LLC (formerly leased to a subsidiary of Cliffs Natural 
Resources, Inc). Production comes from a longwall mine and is transported by beltline to a preparation plant and is then shipped 
via railroad and barge to both domestic and export customers.

5

(cid:47)(cid:92)(cid:81)(cid:70)(cid:75)(cid:17)(cid:3)(cid:3)(cid:3)(cid:3)The Lynch property is located in Harlan and Letcher Counties, Kentucky. In 2015, approximately 2.2 million tons 
were produced from this property. This property was formerly leased to a subsidiary of Alpha Natural Resources but was sold to 
a subsidiary of Revelation Energy, LLC during 2015. Production comes from both underground and surface mines. This property 
has the ability to ship coal on both the CSX and Norfolk Southern railroads.

(cid:47)(cid:82)(cid:81)(cid:72)(cid:3)(cid:48)(cid:82)(cid:88)(cid:81)(cid:87)(cid:68)(cid:76)(cid:81)(cid:17)(cid:3)(cid:3)(cid:3)(cid:3)The Lone Mountain property is located in Harlan County, Kentucky. In 2015, approximately 1.6 million 
tons were produced from this property. We lease the property to a subsidiary of Arch Coal, Inc. Production comes from underground 
mines and is transported primarily by beltline to a preparation plant on adjacent property and shipped on the Norfolk Southern or 
CSX railroads to both utilities and steel producers.

(cid:57)(cid:44)(cid:38)(cid:38)(cid:18)(cid:46)(cid:72)(cid:81)(cid:87)(cid:88)(cid:70)(cid:78)(cid:92)(cid:3)(cid:47)(cid:68)(cid:81)(cid:71)(cid:17)(cid:3)(cid:3)(cid:3)(cid:3)The VICC/Kentucky Land property is located primarily in Perry, Leslie and Pike Counties, Kentucky. 
In 2015, approximately 1.1 million tons were produced from this property. Coal is produced from a number of lessees, including 
subsidiaries of Cambrian Coal and Blackhawk Mining, from both underground and surface mines. Coal is shipped primarily by 
truck but also on the CSX and Norfolk Southern railroads to utility customers. The map below shows the location of our major 
properties in Central Appalachia:

(cid:33)(cid:80)(cid:80)(cid:65)(cid:76)(cid:65)(cid:67)(cid:72)(cid:73)(cid:65)(cid:136)(cid:51)(cid:79)(cid:85)(cid:84)(cid:72)(cid:69)(cid:82)(cid:78)(cid:0)(cid:33)(cid:80)(cid:80)(cid:65)(cid:76)(cid:65)(cid:67)(cid:72)(cid:73)(cid:65)

(cid:50)(cid:68)(cid:78)(cid:3)(cid:42)(cid:85)(cid:82)(cid:89)(cid:72).    The Oak Grove property is located in Jefferson County, Alabama. In 2015, approximately 2.4 million tons 
were produced from this property. We lease the property to a subsidiary of ERP Compliant Fuels, LLC, Seneca Coal Resources, 
LLC (formerly leased to a subsidiary of Cliffs Natural Resources, Inc.). Production comes from an underground longwall mine 
and is transported primarily by beltline to a preparation plant. The metallurgical coal is then shipped via railroad and barge to both 
domestic and export customers.

6

(cid:37)(cid:47)(cid:38)(cid:3)(cid:51)(cid:85)(cid:82)(cid:83)(cid:72)(cid:85)(cid:87)(cid:76)(cid:72)(cid:86)(cid:17)    The BLC properties are located in Kentucky and Tennessee. In 2015, approximately 1.5 million tons were 
produced from these properties. We lease these properties to a number of operators including Middlesboro Mining Properties, Inc., 
Revelation Energy, LLC and Corsa Coal Corp. Production comes from both underground and surface mines and is trucked to 
preparation plants and loading facilities operated by our lessees. Coal is transported by truck and is shipped via both CSX and 
Norfolk Southern railroads to utility and industrial customers. The map below shows the location of our major properties in Southern 
Appalachia:

(cid:41)(cid:76)(cid:76)(cid:73)(cid:78)(cid:79)(cid:73)(cid:83)(cid:0)(cid:34)(cid:65)(cid:83)(cid:73)(cid:78)

(cid:58)(cid:76)(cid:79)(cid:79)(cid:76)(cid:68)(cid:80)(cid:86)(cid:82)(cid:81)(cid:3)(cid:39)(cid:72)(cid:89)(cid:72)(cid:79)(cid:82)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87)(cid:17)    The Williamson property is located in Franklin and Williamson Counties, Illinois. The property 
is under lease to a subsidiary of Foresight Energy, and in 2015, approximately 5.2 million tons were mined on the property. This 
production is from a longwall mine and is shipped primarily via the Canadian National railroad to domestic utility customers and 
to various export customers.

(cid:43)(cid:76)(cid:79)(cid:79)(cid:86)(cid:69)(cid:82)(cid:85)(cid:82)(cid:18)(cid:39)(cid:72)(cid:72)(cid:85)(cid:3)(cid:53)(cid:88)(cid:81)(cid:17)(cid:3)(cid:3)(cid:3)(cid:3)The Hillsboro property is located in Montgomery and Bond Counties, Illinois. The property is under 
lease to a subsidiary of Foresight Energy, and in 2015, approximately 2.6 million tons were shipped from the property. When 
active, production at the Deer Run mine on our Hillsboro property is from an underground longwall mine and is shipped via either 
the Union Pacific, Norfolk Southern or Canadian National railroads or by barges to domestic utilities or export customers. The 
Deer Run mine has been idled since March 2015 as a result of elevated carbon monoxide levels in the mine. In July 2015, we 
received a notice from Foresight Energy declaring a force majeure event at the mine as a result of the elevated carbon monoxide 
levels. While we are disputing Foresight Energy’s claim and have filed a lawsuit in connection therewith, the effect of a valid force 
majeure declaration would relieve Foresight Energy of its obligation to pay us minimum deficiency payments of $7.5 million per 

7

quarter, or $30.0 million per year. For more information on the idling of the Deer Run mine, see "Item 1A. Risk Factors—Risks 
Related to Our Business—Foresight Energy's Deer Run Mine is currently idled as a result of elevated carbon monoxide levels at 
the mine. If the mine remains idled for an extended period or does not resume operations, our financial condition and results of 
operations could be aversely affected," included elsewhere in this Annual Report on Form 10-K. 

(cid:48)(cid:68)(cid:70)(cid:82)(cid:88)(cid:83)(cid:76)(cid:81).    The Macoupin property is located in Macoupin County, Illinois. The property is under lease to a subsidiary of 
Foresight Energy, and in 2015, approximately 2.4 million tons were shipped from the property. Production is from an underground 
mine and is shipped via the Norfolk Southern or Union Pacific railroads or by barge to utility customers such or loaded into barges 
for shipment to export customers.

(cid:54)(cid:68)(cid:75)(cid:68)(cid:85)(cid:68)(cid:17)    The Sahara property is located in Saline, Hamilton and Williamson Counties in Illinois. The property is under 
lease to a subsidiary of Peabody Energy Corporation and approximately 0.6 million tons were mined on the property during 2015. 
Production is currently from an underground mine and is shipped via barge primarily to utility customers.

In addition to these properties, we own loadout and other transportation assets at the Williamson and Macoupin mines and 
at the Sugar Camp mine, which is another mine operated by Foresight Energy. See "—Coal Transportation and Processing Assets." 
The map below shows the location of our major properties in the Illinois Basin:

8

(cid:46)(cid:79)(cid:82)(cid:84)(cid:72)(cid:69)(cid:82)(cid:78)(cid:0)(cid:48)(cid:79)(cid:87)(cid:68)(cid:69)(cid:82)(cid:0)(cid:50)(cid:73)(cid:86)(cid:69)(cid:82)(cid:0)(cid:34)(cid:65)(cid:83)(cid:73)(cid:78)

(cid:58)(cid:72)(cid:86)(cid:87)(cid:72)(cid:85)(cid:81)(cid:3)(cid:40)(cid:81)(cid:72)(cid:85)(cid:74)(cid:92)(cid:17)(cid:3)(cid:3)(cid:3)(cid:3)The  Western  Energy  property  is  located  in  Rosebud  and  Treasure  Counties,  Montana.  In  2015, 
approximately 4.9 million tons were produced from our property. A subsidiary of Westmoreland Coal Company has two coal leases 
on the property. Coal is produced by surface dragline mining, and the coal is transported by either truck or beltline to the four-unit 
2,200-megawatt Colstrip generation station located at the mine mouth. The map below shows the location of our property in the 
Northern Powder River Basin:

Coal Transportation and Processing Assets

We own transportation and processing infrastructure related to certain of our coal and aggregates properties. We own loadout 
and other transportation assets at Foresight Energy's Williamson and Macoupin mines in the Illinois Basin. In addition, we own 
rail loadout and associated infrastructure at the Sugar Camp mine, an Illinois Basin mine also operated by a subsidiary of Foresight 
Energy. While we own coal reserves at the Williamson and Macoupin mines, we do not own coal reserves at the Sugar Camp mine. 
We typically lease this infrastructure to third parties and collect throughput fees; however, at the loadout facility at the Williamson 
mine in Illinois, we operate the coal handling and transportation infrastructure and have subcontracted out that responsibility to a 
third party.

Hard Mineral Royalty and Other Assets

As of December 31, 2015, we owned an estimated 500 million tons of aggregates reserves located in a number of states 
across the country. We lease a portion of these reserves to third parties in exchange for royalty payments. We also lease approximately 

9

120 million tons of these reserves to the Grand Rivers operation in the VantaCore segment. The structure of these leases is similar 
to our coal leases, and these leases typically also require minimum rental payments in addition to royalties. During 2015, our 
aggregates lessees produced 2.2 million tons of aggregates from these properties and we received $8.1 million in aggregates royalty 
revenues, including overriding royalty revenues. In February 2016, we sold the aggregates reserves and related royalty rights at 
three aggregates operations located in Texas, Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, 
of our aggregates reserves as of December 31, 2015, for $10.0 million in cash. The properties sold generated approximately $0.9 
million in aggregates royalty reserves during 2015. The effective date of the sale was February 1, 2016.     

Through our 51% ownership of BRP LLC ("BRP"), a joint venture with International Paper Company, we own approximately 
10 million mineral acres in 31 states. While the vast majority of the 10 million acres remain largely undeveloped, BRP currently 
holds eight active mineral leases and has an ongoing program to identify additional opportunities to lease its minerals to operating 
parties.  BRP’s hard mineral royalty and other assets include nearly 95,000 net mineral acres of coal rights (primarily lignite and 
some bituminous coal) in the Gulf Coast region, of which approximately 4,800 acres are leased in Louisiana, Alabama and Texas.  
In addition, BRP owns copper rights in Michigan’s Upper Peninsula that are subject to a development agreement with a copper 
development company.  BRP also holds various other mineral rights including coalbed methane, metals, aggregates, water and 
geothermal, in several states throughout the United States. 

(cid:51)(cid:79)(cid:68)(cid:65)(cid:0)(cid:33)(cid:83)(cid:72)(cid:0)(cid:51)(cid:69)(cid:71)(cid:77)(cid:69)(cid:78)(cid:84)(cid:0)

We own a 49% non-controlling equity interest in Ciner Wyoming, which is one of the largest and lowest cost producers of 
soda ash in the world, serving a global market from its facility located in the Green River Basin of Wyoming. The Green River 
Basin geological formation holds the largest, and one of the highest purity, known deposits of trona ore in the world. Trona, a 
naturally occurring soft mineral, is also known as sodium sesquicarbonate and consists primarily of sodium carbonate, or soda 
ash, sodium bicarbonate and water. Ciner Wyoming processes trona ore into soda ash, which is an essential raw material in flat 
glass, container glass, detergents, chemicals, paper and other consumer and industrial products. The vast majority of the world’s 
accessible trona reserves are located in the Green River Basin. According to historical production statistics, approximately one-
quarter of global soda ash is produced by processing trona, with the remainder being produced synthetically through chemical 
processes. The costs associated with procuring the materials needed for synthetic production are greater than the costs associated 
with  mining  trona  for  trona-based  production.  In  addition,  trona-based  production  consumes  less  energy  and  produces  fewer 
undesirable by-products than synthetic production.

Ciner Wyoming’s Green River Basin surface operations are situated on approximately 880 acres in Wyoming, and its mining 
operations consist of approximately 23,500 acres of leased and licensed subsurface mining area. The facility is accessible by both 
road and rail. Ciner Wyoming uses six large continuous mining machines and ten underground shuttle cars in its mining operations. 
Its  processing  assets  consist  of  material  sizing  units,  conveyors,  calciners,  dissolver  circuits,  thickener  tanks,  drum  filters, 
evaporators and rotary dryers. The following map provides an aerial  overview of Ciner Wyoming’s surface operations:

10

In trona ore processing, insoluble materials and other impurities are removed by thickening and filtering the liquor, a solution 
consisting of sodium carbonate dissolved in water. Ciner Wyoming then adds activated carbon to filters to remove organic impurities, 
which can cause color contamination in the final product. The resulting clear liquid is then crystallized in evaporators, producing 
sodium carbonate monohydrate. The crystals are then drawn off and passed through a centrifuge to remove excess water. The 
resulting material is dried in a product dryer to form anhydrous sodium carbonate, or soda ash. The resulting processed soda ash 
is  then  stored  in  seven  on-site  storage  silos  to  await  shipment  by  bulk  rail  or  truck  to  distributors  and  end  customers.  Ciner 
Wyoming’s storage silos can hold up to 65,000 short tons of processed soda ash at any given time. The facility is in good working 
condition and has been in service for over 50 years.

The evaporation stage of trona ore processing produces a precipitate and natural by-product called deca. "Deca," short for 
sodium carbonate decahydrate, is one part soda ash and ten parts water. Solar evaporation causes deca to crystallize and precipitate 
to the bottom of the four main surface ponds at the Green River Basin facility. Ciner Wyoming’s deca rehydration process enables 

11

Ciner Wyoming to reduce waste storage needs and convert what is typically a waste product into a usable raw material. As a result 
of this process, Ciner Wyoming has been able to reduce the amount of short tons of trona ore it takes to produce one short ton of 
soda ash.

The soda ash produced is shipped by rail or truck from the Green River Basin facility. For the year ended December 31, 
2015, Ciner Wyoming shipped approximately 96% of its soda ash to customers initially via rail under a contract with Union Pacific 
that expires on December 31, 2017, and the plant receives rail service exclusively from Union Pacific. Ciner Wyoming leases a 
fleet of more than 2,000 hopper cars that serve as dedicated modes of shipment to its domestic customers. For export, Ciner 
Wyoming ships soda ash on unit trains consisting of approximately 100 cars to two primary ports: Port Arthur, Texas and Portland, 
Oregon. From these ports, the soda ash is loaded onto ships for delivery to ports all over the world. American Natural Soda Ash 
Corporation ("ANSAC") provides logistics and support services for all of Ciner Wyoming’s export sales. For domestic sales, 
Ciner Resources Corporation provides similar services.

Ciner Wyoming’s largest customer is ANSAC, which buys soda ash (through Ciner Wyoming’s sales agent) and other of its 
member companies for further export to its customers. ANSAC takes soda ash orders directly from its overseas customers and 
then purchases soda ash for resale from its member companies pro rata based on each member’s production volumes. ANSAC is 
the exclusive distributor for its members to the markets it serves. However, Ciner Resources Corporation, on Ciner Wyoming’s 
behalf, negotiates directly with, and Ciner Wyoming exports to, customers in markets not served by ANSAC.

Ciner Wyoming is party to several mining leases and one license for its subsurface mining rights. Some of the leases are 
renewable at Ciner Wyoming’s option upon expiration. Ciner Wyoming pays royalties to the State of Wyoming, the U.S. Bureau 
of Land Management and Rock Springs Royalty Company, an affiliate of Anadarko Petroleum, which are calculated based upon 
a percentage of the quantity or gross value of soda ash and related products at a certain stage in the mining process, or a certain 
sum per ton of such products. These royalty payments are typically subject to a minimum domestic production volume from the 
Green River Basin facility, although Ciner Wyoming is obligated to pay minimum royalties or annual rentals to its lessors and 
licensor regardless of actual sales. The royalty rates paid to Ciner Wyoming’s lessors and licensor may change upon renewal of 
such leases and license. Under the license with Rock Springs, the applicable royalty rate may vary based on a most favored nation 
clause in the license which is currently the subject of litigation in Wyoming.

As a minority interest owner in Ciner Wyoming, we do not operate and are not involved in the day-to-day operation of the 
trona ore mine or soda ash production plant. Our partner, Ciner Resources LP manages the mining and plant operations. We appoint 
three of the seven members of the Board of Managers of Ciner Wyoming and have certain limited negative controls relating to the 
company.

(cid:54)(cid:65)(cid:78)(cid:84)(cid:65)(cid:35)(cid:79)(cid:82)(cid:69)(cid:0)(cid:51)(cid:69)(cid:71)(cid:77)(cid:69)(cid:78)(cid:84)(cid:0)

VantaCore is a construction materials company that we acquired on October 1, 2014. VantaCore operates four limestone 
quarries, one underground limestone mine, six sand and gravel plants, two asphalt plants and two marine terminals. VantaCore is 
headquartered in Philadelphia, Pennsylvania, and its operations are located in Pennsylvania, West Virginia, Tennessee, Kentucky 
and Louisiana. As of December 31, 2015, VantaCore controlled approximately 400 million tons of estimated aggregates reserves, 
including approximately 120 million tons of reserves leased at the Grand Rivers operation from the Coal, Hard Mineral Royalty 
and Other segment. The reserve estimates for each of VantaCore’s properties were prepared internally and audited by an independent 
third party advisor. For the year ended December 31, 2015, VantaCore sold approximately 6.0 million tons of crushed stone and 
gravel, including brokered stone, 1.1 million tons of sand and 0.2 million tons of asphalt. VantaCore’s four operating businesses 
are  Laurel Aggregates,  located  in  Lake  Lynn,  Pennsylvania,  Winn  Materials/McIntosh  Construction,  located  in  Clarksville, 
Tennessee, Grand Rivers, located in Grand Rivers, Kentucky and Southern Aggregates, located near Baton Rouge, Louisiana. 
VantaCore’s business is seasonal, with production typically lower in the first quarter of each year due to winter weather. The 
following map shows the locations of each of VantaCore’s operations.

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Laurel Aggregates

Laurel Aggregates is a limestone mining company located in Lake Lynn, Pennsylvania. Its operations consist of a surface 
and underground mines and use conventional drilling, blasting and crushing methods. The surface mine is located on approximately 
100 acres of owned property, and the underground reserves are located on approximately 670 acres of leased property. Laurel pays 
royalties for material mined and sold from its leased property. Laurel also brokers stone for third party quarries located in Ohio 
and Pennsylvania. Crushed stone is loaded into third party trucks for delivery to customers located in southwestern Pennsylvania, 
northeastern West Virginia and eastern Ohio. Laurel’s customers consist of oilfield service companies, natural gas exploration and 
production companies and construction and contracting companies.

Winn Materials/McIntosh Construction

Winn Materials’ operations consist of two crushed stone quarries and a river terminal, while McIntosh is a complementary 
asphalt producer and paving company. Together, the two companies function as a vertically integrated unit. The operations of 
Winn/McIntosh are located in Clarksville, Tennessee, which is located approximately 45 miles northwest of Nashville and is 
Tennessee’s fifth largest city.

Winn mines and produces hard rock limestone using conventional drilling, blasting and crushing methods. Winn primarily 
leases its properties at its two quarries located in Clarksville and in Trenton, Kentucky and pays royalties for material produced 
and sold from the leased properties. Winn’s marine terminal business is located on the Cumberland River, adjacent to Winn’s 
Clarksville quarry. Its dock transloads various materials by barge. Through the river terminal, Winn loads out crushed stone and 
also imports products such as river and granite sand, fertilizer and agricultural products for the local and regional markets. The 
river terminal is currently being expanded to meet growing demand for additional imported product into these markets. Crushed 
stone produced at Winn’s quarries and products imported from the river terminal are loaded onto third party trucks for delivery to 
Winn’s customers.

McIntosh sells asphalt to third parties and also operates its own paving business. Winn supplies most of McIntosh’s crushed 
stone and sand used for both its asphalt production and construction needs. The Winn/McIntosh businesses sell to and provide 
services for residential, commercial and industrial customers. These businesses also supply and provide construction services for 
infrastructure and highway construction projects primarily within Montgomery County, Tennessee, including for Fort Campbell, 
one of the largest Army bases in the United States.

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Grand Rivers

VantaCore purchased this 514 acre hard rock quarry operation located on the Tennessee River near Grand Rivers, Kentucky 
from one of NRP’s aggregates lessees that had previously idled the operation. Under VantaCore’s ownership, this operation continues 
to lease reserves from NRP and sells its limestone aggregates in both the local market loaded onto third party trucks and to river-
based markets through a barge load out terminal. 

The Grand Rivers quarry produces various grades of crushed limestone products mined through its open pit using conventional 
drilling, blasting and crushing methods performed by a third party mining contractor. Grand Rivers pays royalties for material 
produced and sold from the leased property to a subsidiary of NRP. Crushed stone is loaded into third party trucks to customers 
in Kentucky and barges for delivery to customers along the Mississippi River Basin and related waterways. Grand Rivers customers 
currently consist primarily of ready mix concrete companies and construction and contracting companies.

Southern Aggregates

Southern Aggregates is a sand and gravel mining company based in Denham Springs, Louisiana approximately 25 miles 
northeast of Baton Rouge, Louisiana. Southern operates six sand and gravel operations. Suction dredges extract sand and gravel, 
and the mined material is processed at plants generally located at each site. The plants separate gravel and saleable sand from 
waste sand and clays, with the waste  returned to mined-out sections of pits. The saleable sand and gravel material is loaded onto 
third party trucks for delivery to Southern’s customers. Southern leases its mineral reserves and pays royalties for material produced 
and sold from the leased properties. Southern’s markets extend approximately 100 miles west and south from its operating locations, 
including to the cities of Baton Rouge, Lafayette and New Orleans. Southern’s customers consist primarily of ready mix concrete 
companies, asphalt producers and contractors.

(cid:47)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:65)(cid:83)(cid:0)(cid:51)(cid:69)(cid:71)(cid:77)(cid:69)(cid:78)(cid:84)(cid:0)

We own various interests in oil and gas properties that are located in the Williston Basin, the Appalachian Basin, Louisiana 
and Oklahoma. Our interests in the Appalachian Basin, Louisiana and Oklahoma are minerals and royalty interests, while in the 
Williston Basin we own non-operated working interests. Our Williston Basin non-operated working interest properties include the 
properties acquired in the Sanish Field from an affiliate of Kaiser-Francis Oil Company in November 2014. Subsequent to December 
31, 2015, we sold certain of our oil and gas royalty interests in the Appalachian Basin.

We generate oil and gas revenues from non-operated working interests, royalty interests and overriding royalty interests in 
producing oil and gas wells. Our primary interests in oil and natural gas producing properties are our non-operated working interests 
located in the Williston Basin, but we also own fee mineral, royalty or overriding royalty interests in oil and gas properties in 
several other areas, including the Appalachian Basin, the Mississippian Lime formation and northern Louisiana. 

Revenues related to our non-operated working interests in oil and gas assets are recognized on the basis of our net revenue 
interests in hydrocarbons produced. We also incur capital expenditures and operating expenses associated with the non-operated 
working interests. Oil and gas royalty revenues include production payments as well as bonus payments and are recognized on 
the basis of hydrocarbons sold by lessees and the corresponding revenues from those sales. Generally, the lessees make payments 
based on a percentage of the selling price. Some leases are subject to minimum annual payments or delay rentals. Our revenues 
fluctuate based on changes in the market prices for oil and natural gas, the decline in production from producing wells, and other 
factors affecting the third-party oil and natural gas exploration and production companies that operate our wells, including the cost 
of development and production.

Our non-operated working interests are all located in the Williston Basin in North Dakota and Montana. As of December 31, 
2015, we had non-operated working interests in 21,832 net acres in the basin, all of which are held by production. These assets 
include 6,086 net acres in the Sanish Field in Mountrail County, North Dakota that we acquired in November 2014 from an affiliate 
of Kaiser-Francis Oil Company. The interests acquired in that acquisition are all operated by Whiting Petroleum Corporation and 
include an estimated average working interest of 14% in approximately 210 wells that were producing as of December 31, 2015.

We own royalty interests where we have leased certain portions of our owned mineral interests to third parties primarily 
located in the southern portion of the Appalachian Basin and in the Mississippian Lime in Oklahoma. We also own overriding 
royalty interests primarily located in the Appalachian Basin in West Virginia and Pennsylvania, including in the Marcellus Shale, 
and in the Haynesville Shale in Louisiana. In February 2016, we sold royalty and overriding royalty interests in several producing 

14

properties located in the Appalachian Basin, including our overriding royalty interests in the Marcellus Shale, for $36.6 million 
in cash.  The sale included royalty and overriding royalty interests in approximately 765 gross producing wells as of December 
31, 2015 and approximately 10% of our estimated proved reserves as of December 31, 2015, or 1,094 MBoe. The effective date 
of the sale was January 1, 2016.    

Through our 51% ownership of BRP as described above, we also own approximately 300,000 gross acres of oil and gas 
mineral rights in Louisiana, of which over 53,000 acres were leased as of December 31, 2015. In addition to the leased mineral 
acreage, BRP holds a 1% overriding royalty interest on approximately 25,000 mineral acres in Louisiana. 

Estimated Proved Oil and Gas Reserves

Proved reserves are those quantities of crude oil and natural gas which, by analysis of geoscience and engineering data, can 
be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under 
existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the 
right to operate expire, unless evidence indicates renewal is reasonably certain. In connection with the estimation of proved reserves, 
the term "reasonable certainty" implies a high degree of confidence that the quantities of crude oil, natural gas liquids and/or natural 
gas actually recovered will equal or exceed the estimate.

(cid:50)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:0)(cid:48)(cid:82)(cid:69)(cid:83)(cid:69)(cid:78)(cid:84)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

The following table presents our estimated proved oil and gas reserves and related standardized measure of discounted cash 

flows as of December 31, 2015 as estimated by Netherland, Sewell & Associates, Inc., our independent reserve engineer:

Estimated Proved Reserves (4)

Crude Oil
(MBbl)

NGLs
(MBbl)

Natural Gas
(MMcf)

Total Proved
Reserves
(MBoe) (1)

Standardized
Measure of
Discounted Cash
Flows (2)

(in thousands)

Proved Developed Producing
Proved Developed Non-
Producing
Proved Undeveloped

Total

7,636

226
212
8,074

1,177

19
27
1,223

13,015

142
167
13,324

10,982

$

111,783

269
267
11,518

(3)

$

3,869
701
116,353

(1)  Natural gas is converted on the basis of six Mcf of gas per one Bbl of oil equivalent. This ratio reflects an energy content 

equivalency and not a price or revenue equivalency.

(2)  Standardized measure of discounted cash flows represents the present value of estimated future net revenue to be generated 
from the production of proved reserves, determined in accordance with the rules and regulations of the SEC (using prices 
and costs in effect as of the date of estimation), less future development, production and income tax expenses, and discounted 
at 10% per annum to reflect the timing of future net revenue.

(3)  Includes 10,063 MBoe of estimated proved reserves attributable to our non-operated working interests in oil and natural 
gas properties in the Williston Basin, approximately 3% of which were proved undeveloped reserves as of December 31, 
2015.

(4)  Approximately  10%  of  our  estimated  proved  reserves  as  of  December  31,  2015,  or  1,094  MBoe,  (all  located  in  the 

Appalachian Basin) were sold in February 2016.

Our estimates of proved developed reserves, proved undeveloped reserves, and total proved reserves at December 31, 2015 
and 2014 and changes in proved reserves during the last year are presented in the Supplemental Information on Oil and Gas 
Exploration  and  Production  Activities  (Unaudited) under  Item 8.  of  this  Form  10-K.  Also  presented  in  the Supplemental 
Information are the Partnership's estimates of future net cash flows and discounted future net cash flows from proved reserves. 
See Critical Accounting Estimates under Item 7 of this Form 10-K for additional information on the Partnership’s proved reserves.

15

 
 
  
(cid:52)(cid:69)(cid:67)(cid:72)(cid:78)(cid:79)(cid:76)(cid:79)(cid:71)(cid:73)(cid:69)(cid:83)(cid:0)(cid:53)(cid:83)(cid:69)(cid:68)(cid:0)(cid:73)(cid:78)(cid:0)(cid:48)(cid:82)(cid:79)(cid:86)(cid:69)(cid:68)(cid:0)(cid:50)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:0)(cid:37)(cid:83)(cid:84)(cid:73)(cid:77)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

Our  estimated  proved  reserves  as  of  December 31,  2015,  were  prepared  by  Netherland,  Sewell &  Associates,  Inc. 
("Netherland  Sewell"),  our  independent  reserve  engineer.  To  achieve  reasonable  certainty,  Netherland  Sewell  employed 
technologies that have been demonstrated to yield results with consistency and repeatability. The technologies and economic data 
used in the estimation of our proved reserves include, but are not limited to, well logs, geologic maps including isopach and 
structure maps, analogy and statistical analysis, and available downhole and production data and well test data. A copy of Netherland 
Sewell’s summary report is included as Exhibit 99.2 to this Annual Report on Form 10-K.  For additional information on our 
estimated proved reserves, see "Supplemental Information on Oil and Gas Exploration and Production Activities" to the audited 
consolidated financial statements included elsewhere in this Annual Report on Form 10-K.

(cid:37)(cid:83)(cid:84)(cid:73)(cid:77)(cid:65)(cid:84)(cid:69)(cid:68)(cid:0)(cid:48)(cid:82)(cid:79)(cid:86)(cid:69)(cid:68)(cid:0)(cid:53)(cid:78)(cid:68)(cid:69)(cid:86)(cid:69)(cid:76)(cid:79)(cid:80)(cid:69)(cid:68)(cid:0)(cid:50)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)

During 2015, we participated in 29 wells in the Williston Basin and incurred $29.1 million of related capital expenditures 
that resulted in the conversion of 286 MBoe of estimated proved undeveloped reserves to estimated proved developed reserves. 
As of December 31, 2015, we had no estimated proved undeveloped reserves that have remained undeveloped for more than five 
years, and we expect all estimated proved undeveloped reserves reported herein will be developed within the next two years.

(cid:41)(cid:78)(cid:84)(cid:69)(cid:82)(cid:78)(cid:65)(cid:76)(cid:0)(cid:35)(cid:79)(cid:78)(cid:84)(cid:82)(cid:79)(cid:76)(cid:83)(cid:0)(cid:47)(cid:86)(cid:69)(cid:82)(cid:0)(cid:50)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:0)(cid:37)(cid:83)(cid:84)(cid:73)(cid:77)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:48)(cid:82)(cid:79)(cid:67)(cid:69)(cid:83)(cid:83)

Netherland Sewell, our independent reserve engineering firm, estimated, in accordance with generally accepted petroleum 
engineering and evaluation principles and definitions and guidelines established by the Securities and Exchange Commission, 100% 
of our proved reserves as of December 31, 2015.  The Netherland Sewell technical personnel responsible for preparing the reserve 
estimates presented herein meet the requirements regarding qualifications, independence, objectivity and confidentiality set forth 
in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of 
Petroleum Engineers. See Exhibit 99.2 included as an exhibit to this Annual Report on Form 10-K for further discussion of the 
qualifications of Netherland Sewell personnel.

We maintain an internal staff of petroleum engineers and geoscience professionals who work closely with our independent 
reserve engineers to ensure the integrity, accuracy and timeliness of data furnished to Netherland Sewell in their reserves estimation 
process. In the fourth quarter, our technical team was in contact regularly with representatives of Netherland Sewell to review 
properties and discuss methods and assumptions used in Netherland Sewell’s preparation of the year-end reserves estimates. A 
copy of the Netherland Sewell reserve report was reviewed by our internal technical staff prior to the inclusion of such report in 
this Annual Report on Form 10-K.

Our Director—Engineering and Reserves is the technical person primarily responsible for overseeing the preparation of our 
reserve estimates. He has a Bachelor of Science degree in Petroleum Engineering from the University of Texas at Austin and is a 
member of the Society of Petroleum Engineers. Prior to joining NRP, he spent nine years at DeGolyer and MacNaughton as a 
reservoir engineer working on multiple aspects of reserve evaluation and appraisals. The Director—Engineering and Reserves 
reports directly to our Vice President, Oil and Gas.

16

Drilling and Development Activities

We do not operate any wells or conduct any drilling activities. The following table sets forth information with respect to the 
number of net wells drilled and completed on our properties during the years ended December 31, 2015 and 2014. Well information 
for the year ended December 31, 2013 is not included, as our oil and natural gas producing activities were not material to our 
results of operations for that year. Productive wells are those that produce commercial quantities of hydrocarbons, whether or not 
they produce a reasonable rate of return. Net wells represent the total of our fractional working interests or royalty interests, as 
applicable, owned in gross wells.

2015
Development
Exploratory
Total

2014

Development
Exploratory

Total

Productive

Dry

Total

Gross  

Net  

Gross  

Net  

Gross  

Net  

53
—
53

123
—
123

2.7
—
2.7

4.4
—
4.4

—
—
—

—
—
—

—
—
—

—
—
—

53
—
53

123
—
123

2.7
—
2.7

4.4
—
4.4

Producing Oil and Natural Gas Wells

The following table sets forth the gross and net producing oil and natural gas wells in which we held working interests and 
royalty or overriding royalty interests as of December 31, 2015. Gross wells represent the number of wells in which we own an 
interest. Net wells represent the total of our fractional working interests or royalty interests, as applicable, owned in gross wells.

Williston Basin
Other
Total

Working Interest Wells(1)

Royalty and Overriding Royalty Interest Wells(2)

Oil

Natural Gas

Oil

Natural Gas

Gross  

Net  

Gross  

Net  

Gross  

Net  

Gross  

Net  

486
—
486

48
—
48

—
—
—

—
—
—

61
98
159

0.1
4.7
4.8

—
1,005
1,005

—
73
73

(1)  As  of  December 31,  2015,  we  also  owned  non-operated  working  interests  in  19  gross  oil  wells  in  various  stages  of 

development in the Williston Basin.

(2)  67 gross (1.4 net) natural gas and oil wells are attributable to our overriding royalty interest in the Marcellus Shale acquired 
in 2012. The remaining wells consist primarily of conventional oil and gas wells or coal bed methane that are located in 
the  southern  portion  of  the Appalachian  Basin.  In  February  2016,  we  sold  royalty  and  overriding  royalty  interests  in 
approximately 765 gross  producing wells in the Appalachian Basin as of December 31, 2015. The effective date of the 
sale was January 1, 2016.

17

Undeveloped Acreage Summary

The following table contains a summary of the undeveloped gross and net acres in which we had interests as of December 31, 

2015:

Williston Basin
Other

Total

Undeveloped Acres

Acres Leased to NRP (1)

Net ORRI and Fee Mineral Acres

Gross

Net

ORRI (2)

610
—
610

384
—
384

—
3,167
3,167

Fee Mineral (3)
—
25,323
25,323

(1)  Represents mineral acres leased by third parties to NRP.

(2)  Represents net acres in which we have an overriding royalty interest in the Marcellus Shale acquired in December 2012. 
Certain of the leases subject to the overriding royalty interest originally acquired have expired but may be renewed. To the 
extent those leases are renewed, our overriding royalty interest in those properties will continue. In February 2016, we sold 
3,167 net ORRI acres. The effective date of the sale was January 1, 2016.    

(3)  Represents net fee mineral acres owned by NRP and BRP LLC and leased to third parties. No leased undeveloped fee 

mineral acres were sold in the February 2016 sale.

Developed Acreage Summary

The following table contains a summary of the developed gross and net acres in which we had interests as of December 31, 

2015:

Williston Basin
Other

Total

Developed Acres

Acres Leased to NRP (1)

Net ORRI and Fee Mineral Acres

Gross

Net

ORRI (2)

120,016
—
120,016

21,066
—
21,066

—
20,862
20,862

Fee Mineral (3)
—
117,365
117,365

(1)  Represents mineral acres leased by third parties to NRP.

(2)  Represents net acres in which we have an overriding royalty interest in the Marcellus Shale acquired in December 2012. 

In February 2016, we sold 20,862 net ORRI acres. The effective date of the sale was January 1, 2016.    

(3)  Represents net fee mineral acres owned by NRP Southern Appalachia, Grant County and BRP LLC and leased to third 
parties. In February 2016, we sold 93,916 net fee mineral acres. The effective date of the sale was January 1, 2016.    

Significant Customers

We have a significant concentration of revenues with Foresight Energy and its subsidiaries, with total revenues of $86.6 
million in 2015. The exposure is spread out over four different mining operations. We are currently in a dispute with and have 
filed a lawsuit against Foresight Energy's subsidiary, Hillsboro Energy, for breach of contract due to wrongful declaration of force 
majeure at the Deer Run mine. For additional information, see Note 15. "Major Lessees" in the Notes to Consolidated Financial 
Statements under "Item 8. Financial Statements and Supplementary Data" and "Item 1A. Risk Factors—Risks Related to Our 
Business—Foresight Energy's Deer Run Mine is currently idled as a result of elevated carbon monoxide levels at the mine. If the 
mine remains idled for an extended period or does not resume operations, our financial condition and results of operations could 
be aversely affected," included elsewhere in this Annual Report on Form 10-K.

18

Prior to 2015 we derived more than 10% of our total revenues from Alpha Natural Resources ("Alpha"), our second largest 
lessee after Foresight Energy. Revenue from Alpha declined from $48.8 million in 2014 to $34.4 million in 2015 primarily due to 
Alpha's idling of mines throughout the year and Alpha's August 2015 bankruptcy filing. While Alpha has recently filed a plan of 
reorganization with the bankruptcy court, we do not yet have certainty as to which, if any, of our leases will be accepted or assigned 
in the bankruptcy. To the extent our leases are rejected, Alpha’s operations on those leases will cease.

Competition

We face competition from land companies, coal producers, international steel companies and private equity firms in purchasing 
coal reserves and royalty producing properties. Numerous producers in the coal industry make coal marketing intensely competitive. 
Our lessees compete among themselves and with coal producers in various regions of the United States for domestic sales. Lessees 
compete with both large and small producers nationwide on the basis of coal price at the mine, coal quality, transportation cost 
from the mine to the customer and the reliability of supply. Continued demand for our coal and the prices that our lessees obtain 
are also affected by demand for electricity and steel, as well as government regulations, technological developments and the 
availability and the cost of generating power from alternative fuel sources, including nuclear, natural gas and hydroelectric power.

The construction aggregates industry that VantaCore operates in is highly competitive and fragmented with a large number 
of independent local producers in operating in VantaCore’s local markets. Additionally, VantaCore also competes against large 
private and public companies, some of which are significantly vertically integrated. Therefore, there is intense competition in a 
number of markets in which VantaCore operates. This significant competition could lead to lower prices and lower sales volumes 
in some markets, negatively affecting our earnings and cash flows.

Our trona mining and soda ash refinery business in the Green River Basin, Wyoming, faces competition from a number of 
soda ash producers in the United States, Europe and Asia, some of which have greater market share and greater financial, production 
and other resources than Ciner Wyoming does. Some of Ciner Wyoming’s competitors are diversified global corporations that 
have many lines of business and some have greater capital resources and may be in a better position to withstand a long-term 
deterioration  in  the  soda  ash  market.  Other  competitors,  even  if  smaller  in  size,  may  have  greater  experience  and  stronger 
relationships in their local markets. Competitive pressures could make it more difficult for Ciner Wyoming to retain its existing 
customers and attract new customers, and could also intensify the negative impact of factors that decrease demand for soda ash 
in the markets it serves, such as adverse economic conditions, weather, higher fuel costs and taxes or other governmental or 
regulatory actions that directly or indirectly increase the cost or limit the use of soda ash.

The oil and natural gas industry is intensely competitive, and we compete with other companies in that industry who have 
greater resources than we do. These companies may be able to pay more for productive oil and natural gas properties and may be 
able to expend greater resources to evaluate properties and attract and maintain industry personnel. In addition, these companies 
may have a greater ability to make acquisitions in times of low commodity prices. Our larger competitors may be able to absorb 
the burden of existing, and any changes to, federal, state and local laws and regulations more easily than we can, which would 
adversely affect our competitive position. Our ability to acquire additional properties will be dependent upon our ability to evaluate 
and select suitable properties and to consummate transactions in a highly competitive environment.

Title to Property

We owned a significant percentage of our coal and aggregates reserves in fee as of December 31, 2015. We lease the remainder 
from  unaffiliated  third  parties,  including  leasing  aggregates  reserves  for  VantaCore’s  construction  materials  business.  Ciner 
Wyoming also leases or licenses its trona reserves. As of December 31, 2015, we owned certain of our oil and gas reserves in fee 
and leased our non-operated working interests in the Williston Basin from third parties. We believe that we have satisfactory title 
to all of our mineral properties, but we have not had a qualified title company confirm this belief. Although title to these properties 
is subject to encumbrances in certain cases, such as customary easements, rights-of-way, interests generally retained in connection 
with the acquisition of real property, licenses, prior reservations, leases, liens, restrictions and other encumbrances, we believe 
that none of these burdens will materially detract from the value of our properties or from our interest in them or will materially 
interfere with their use in the operations of our business.

For most of our properties, the surface, oil and gas and mineral or coal estates are not owned by the same entities. Some of 
those entities are our affiliates. State law and regulations in most of the states where we do business require the oil and gas owner 
to coordinate the location of wells so as to minimize the impact on the intervening coal seams. We do not anticipate that the 
existence of the severed estates will materially impede development of the minerals on our properties.

19

Regulation and Environmental Matters

(cid:39)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)

Operations on our properties must be conducted in compliance with all applicable federal, state and local laws and regulations. 
These laws and regulations include matters involving the discharge of materials into the environment, employee health and safety, 
mine  permits  and  other  licensing  requirements,  reclamation  and  restoration  of  mining  properties  after  mining  is  completed, 
management  of  materials  generated  by  mining  operations,  surface  subsidence  from  underground  mining,  water  pollution, 
legislatively mandated benefits for current and retired coal miners, air quality standards, protection of wetlands, plant and wildlife 
protection, limitations on land use, storage of petroleum products and substances which are regarded as hazardous under applicable 
laws  and  management  of  electrical  equipment  containing  PCBs.  Because  of  extensive,  comprehensive  and  often  ambiguous 
regulatory requirements, violations during natural resource extraction operations are not unusual and, notwithstanding compliance 
efforts, we do not believe violations can be eliminated entirely. 

While it is not possible to quantify the costs of compliance with all applicable federal, state and local laws and regulations, 
those costs have been and are expected to continue to be significant. Our lessees in our coal and aggregates royalty businesses are 
required to post performance bonds pursuant to federal and state mining laws and regulations for the estimated costs of reclamation 
and mine closures, including the cost of treating mine water discharge when necessary.  In many states our lessees also pay taxes 
into  reclamation  funds  that  states  use  to  achieve  reclamation  where  site  specific  performance  bonds  are  inadequate  to  do  so.  
Determinations by federal or state agencies that site specific bonds or state reclamation funds are inadequate could result in increased 
bonding costs for our lessees or even a cessation of operations if adequate levels of bonding cannot be maintained.   We do not 
accrue for reclamation costs because our lessees are both contractually liable and liable under the permits they hold for all costs 
relating to their mining operations, including the costs of reclamation and mine closures.  Although the lessees typically accrue 
adequate amounts for these costs, their future operating results would be adversely affected if they later determined these accruals 
to be insufficient. In recent years, compliance with these laws and regulations has substantially increased the cost of coal mining 
for all domestic coal producers

In addition, the electric utility industry, which is the most significant end-user of steam coal, is subject to extensive regulation 
regarding the environmental impact of its power generation activities, which has affected and is expected to continue to affect 
demand for coal mined from our properties. Current and future proposed legislation and regulations could be adopted that will 
have a significant additional impact on the mining operations of our lessees or their customers’ ability to use coal and may require 
our lessees or their customers to change operations significantly or incur additional substantial costs that would negatively impact 
the coal industry.

Many of the statutes discussed below also apply to exploration and development activities associated with our interests in 
crude oil and natural gas properties and to the aggregates and industrial mineral mining operations in which we hold interests, 
including VantaCore’s construction aggregates mining and production operations and Ciner Wyoming’s trona mining and soda 
ash production operations, and therefore we do not present a separate discussion of statutes related to those activities, except where 
appropriate.

(cid:33)(cid:73)(cid:82)(cid:0)(cid:37)(cid:77)(cid:73)(cid:83)(cid:83)(cid:73)(cid:79)(cid:78)(cid:83)

The Clean Air Act and corresponding state and local laws and regulations affect all aspects of our business. The Clean Air 
Act directly impacts our lessees’ coal mining and processing operations by imposing permitting requirements and, in some cases, 
requirements to install certain emissions control equipment, on sources that emit various hazardous and non-hazardous air pollutants. 
The Clean Air Act also indirectly affects coal mining operations by extensively regulating the air emissions of coal-fired electric 
power generating plants. There have been a series of federal rulemakings that are focused on emissions from coal-fired electric 
generating facilities, including the Cross-State Air Pollution Rule (CSAPR), regulating emissions of nitrogen oxide and sulfur 
dioxide, and the Mercury and Air Toxics Rule (MATS), regulating emissions of hazardous air pollutants. Installation of additional 
emissions control technologies and other measures required under these and other U.S. Environmental Protection Agency (EPA) 
regulations, including EPA’s proposed rules to regulate greenhouse gas (GHG) emissions from new and existing fossil fuel-fired 
power plants, will make it more costly to operate coal-fired power plants and could make coal a less attractive or even effectively 
prohibited fuel source in the planning, building and operation of power plants in the future. These rules and regulations have 
resulted in a reduction in coal’s share of power generating capacity, which has negatively impacted our lessees’ ability to sell coal 

20

and our coal-related revenues. Further reductions in coal’s share of power generating capacity as a result of compliance with 
existing or proposed rules and regulations would have a material adverse effect on our coal-related revenues.

The emission of air pollutants from the exploration and development of crude oil and natural gas is also subject to the Clean 
Air Act and comparable state laws. In 2012, EPA published final New Source Performance Standards for volatile organic compounds 
and sulfur dioxide and National Emissions Standards for Hazardous Air Pollutants associated with oil and gas facilities. In January 
2013, EPA granted petitions asking the agency to reconsider and revise parts of this rule. Accordingly, in September 2013, EPA 
issued updates to the New Source Performance Standards for the emission of volatile organic compounds from storage vessels 
used in crude oil and natural gas production. Similarly, in December 2014, EPA finalized rules related to emissions from gas and 
liquids during well completion. These rules could have an adverse effect on revenues from our interests in oil and natural gas 
properties.

Carbon Dioxide and Greenhouse Gas Emissions

In December 2009, EPA determined that emissions of carbon dioxide, methane, and other GHGs, present an endangerment 
to  public  health  and  welfare  because  emissions  of  such  gases  are,  according  to  EPA,  contributing  to  warming  of  the  Earth’s 
atmosphere and other climatic changes. Based on its findings, EPA has begun adopting and implementing regulations to restrict 
emissions of GHGs under various provisions of the Clean Air Act.

In August 2015, EPA published its final Clean Power Plan Rule, a multi-factor plan designed to cut carbon pollution from 
existing power plants, including coal-fired power plants. The rule requires improving the heat rate of existing coal-fired power 
plants and substituting lower carbon-emission sources like natural gas and renewables in place of coal. The rule will force many 
existing coal-fired power plants to incur substantial costs in order to comply or alternatively result in the closure of some of these 
plants. This rule is expected to have a material adverse effect on the demand for coal by electric power generators and is being 
challenged by industry participants and other parties in the United States Court of Appeals for the District of Columbia Circuit.  
In February 2016, the Supreme Court of the United States stayed the Clean Power Plan Rule pending a decision by the District of 
Columbia Circuit as well as any subsequent review by the Supreme Court.

In October 2015, EPA published its final rule on performance standards for greenhouse gas emissions from new, modified, 
and reconstructed electric generating units. The final rule requires new steam generating units to use highly efficient supercritical 
pulverized coal boilers that use partial post-combustion carbon capture and storage technology. The final emission standard is less 
stringent than EPA had originally proposed due to updated cost assumptions, but could still have a material adverse effect on new 
coal-fired power plants. 

President Obama also announced an emission reduction deal with China’s President Xi Jinping in November 2014. The 
United States pledged that by 2025 it would cut climate pollution by 26 to 28% from 2005 levels. China pledged it would reach 
its peak carbon dioxide emissions around 2030 or earlier, and increase its non-fossil fuel share of energy to around 20% by 2030. 
In December 2015, the United States was one of 196 countries that participated in the Paris Climate Conference, at which the 
participants agreed to limit their emissions in order to limit global warming to 2°C above pre-industrial levels, with an aspirational 
goal of 1.5°C. While there is no way to estimate the impact of these climate pledges and agreements, they could ultimately have 
an adverse effect on the demand for coal, both nationally and internationally.

EPA has also adopted rules requiring the reporting of GHG emissions from specified large GHG emission sources in the 
United States, including coal-fired electric power plants, on an annual basis, as well as certain oil and natural gas production 
facilities, on an annual basis.

In August 2015, EPA proposed new regulations to reduce emissions of methane from crude oil and natural gas production 
and transportation activities such as wells, pipelines, and valves levels by up to 45 percent by 2025 (compared to 2012 levels). A 
final rule is expected in 2016.

(cid:40)(cid:65)(cid:90)(cid:65)(cid:82)(cid:68)(cid:79)(cid:85)(cid:83)(cid:0)(cid:45)(cid:65)(cid:84)(cid:69)(cid:82)(cid:73)(cid:65)(cid:76)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:55)(cid:65)(cid:83)(cid:84)(cid:69)

The Federal Comprehensive Environmental Response, Compensation and Liability Act (CERCLA or the Superfund law) 
and analogous state laws impose liability, without regard to fault or the legality of the original conduct, on certain classes of persons 
that are considered to have contributed to the release of a "hazardous substance" into the environment. We could become liable 
under federal and state Superfund and waste management statutes if our lessees are unable to pay environmental cleanup costs 

21

relating  to  hazardous  substances.  In  addition,  we  may  have  liability  for  environmental  clean-up  costs  in  connection  with  our 
VantaCore construction aggregates and Ciner Wyoming soda ash businesses and in connection with our non-operated working 
interests in oil and gas properties, to the extent of our proportionate interest therein.

(cid:55)(cid:65)(cid:84)(cid:69)(cid:82)(cid:0)(cid:36)(cid:73)(cid:83)(cid:67)(cid:72)(cid:65)(cid:82)(cid:71)(cid:69)(cid:83)

Operations conducted on our properties can result in discharges of pollutants into waters. The Clean Water Act and analogous 
state laws and regulations create two permitting programs for mining operations. The National Pollutant Discharge Elimination 
System (NPDES) program under Section 402 of the statute is administered by the states or EPA and regulates the concentrations 
of pollutants in discharges of waste and storm water from a mine site. The Section 404 program is administered by the Army Corps 
of Engineers and regulates the placement of overburden and fill material into channels, streams and wetlands that comprise "waters 
of the United States." The scope of waters that may fall within the jurisdictional reach of the Clean Water Act is expansive and 
may include land features not commonly understood to be a stream or wetlands.  In June 2015, EPA issued a new rule defining 
the scope of "Waters of the United States" (WOTUS) that are subject to regulation.  The WOTUS rule has been challenged by a 
number of states and private parties and was stayed on a nationwide basis by the Sixth Circuit Court of Appeals in October 2015. 
The Clean Water Act and its regulations prohibit the unpermitted discharge of pollutants into such waters, including those from a 
spill or leak. Similarly, Section 404 also prohibits discharges of fill material and certain other activities in waters unless authorized 
by the issued permit.

In connection with EPA’s review of permits, it has sought to reduce the size of fills and to impose limits on specific conductance 
(conductivity) and sulfate at levels that can be unachievable absent treatment at many mines. Such actions by EPA could make it 
more difficult or expensive to obtain or comply with such permits, which could, in turn, have an adverse effect on our coal-related 
revenues.

In addition to government action, private citizens’ groups have continued to be active in bringing lawsuits against operators 
and landowners. Since 2012, several citizen suit group lawsuits have been filed against mine operators for allegedly violating 
conditions in their NPDES permits requiring compliance with West Virginia’s water quality standards. Some of the lawsuits allege 
violations of water quality standards for selenium, whereas others allege that discharges of conductivity and sulfate are causing 
violations of West Virginia’s narrative water quality standards, which generally prohibit adverse effects to aquatic life. The citizen 
suit groups have sought penalties as well as injunctive relief that would limit future discharges of selenium, conductivity or sulfate. 
The federal district court for the Southern District of West Virginia has ruled in favor of the citizen suit groups in multiple suits 
alleging violations of the water quality standard for selenium and in two suits alleging violations of water quality standards due 
to discharges of conductivity. Most of these cases were resolved prior to any appeal and it is difficult to predict whether such suits 
will continue to be successful. However, additional rulings requiring operators to reduce their discharges of selenium, conductivity 
or sulfate could result in large treatment expenses for our lessees.

Since 2013, several citizen group lawsuits have been filed against landowners alleging ongoing discharges of pollutants, 
including selenium and conductivity, from valley fills located at reclaimed mountaintop removal mining sites in West Virginia. 
NRP has been named as a defendant in one of these lawsuits. In each case, the mine on the subject property has been closed, the 
property has been reclaimed, and the state reclamation bond has been released. While it is too early to determine the merits or 
predict the outcome of any of these lawsuits, any determination that a landowner or lessee has liability for discharges from a 
previously reclaimed mine site could result in substantial compliance costs or fines and would result in uncertainty as to continuing 
liability for completed and reclaimed coal mine operations.

Drilling and development activities associated with our oil and natural gas business generate produced water. Produced water 
is often disposed of in underground injection control ("UIC") wells that receive permits from EPA or from state agencies that have 
been granted authority to issue UIC issue permits by EPA. Failures or delays in getting such permits could negatively impact 
exploration and production activities and, in turn, adversely affect our oil and natural gas business.

(cid:47)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:50)(cid:69)(cid:71)(cid:85)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:33)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:45)(cid:73)(cid:78)(cid:73)(cid:78)(cid:71)(cid:0)(cid:41)(cid:78)(cid:68)(cid:85)(cid:83)(cid:84)(cid:82)(cid:89)

Mine Health and Safety Laws

The operations of our lessees, VantaCore and Ciner Wyoming are subject to stringent health and safety standards that have 
been imposed by federal legislation since the adoption of the Mine Health and Safety Act of 1969. The Mine Health and Safety 
Act of 1969 resulted in increased operating costs and reduced productivity. The Mine Safety and Health Act of 1977, which 

22

significantly  expanded  the  enforcement  of  health  and  safety  standards  of  the  Mine  Health  and  Safety Act  of  1969,  imposes 
comprehensive health and safety standards on all mining operations. In addition, the Black Lung Acts require payments of benefits 
by all businesses conducting current mining operations to coal miners with black lung or pneumoconiosis and to some beneficiaries 
of miners who have died from this disease.

Mining accidents in recent years have received national attention and instigated responses at the state and national level that 
have resulted in increased scrutiny of current safety practices and procedures at all mining operations, particularly underground 
mining operations. Since 2006, heightened scrutiny has been applied to the safe operations of both underground and surface mines. 
This increased level of review has resulted in an increase in the civil penalties that mine operators have been assessed for non-
compliance. Operating companies and their supervisory employees have also been subject to criminal convictions. The Mine Safety 
and Health Administration (MSHA) has also advised mine operators that it will be more aggressive in placing mines in the Pattern 
of Violations program, if a mine’s rate of injuries or significant and substantial citations exceed a certain threshold. A mine that is 
placed in a Pattern of Violations program will receive additional scrutiny from MSHA.

Surface Mining Control and Reclamation Act of 1977

The Surface Mining Control and Reclamation Act of 1977 (SMCRA) and similar statutes enacted and enforced by the states 
impose on mine operators the responsibility of reclaiming the land and compensating the landowner for types of damages occurring 
as a result of mining operations. To ensure compliance with any reclamation obligations, mine operators are required to post 
performance bonds. Our coal lessees are contractually obligated under the terms of our leases to comply with all federal, state and 
local laws, including SMCRA. Upon completion of the mining, reclamation generally is completed by seeding with grasses or 
planting trees for use as pasture or timberland, as specified in the reclamation plan approved by the state regulatory authority. In 
addition, higher and better uses of the reclaimed property are encouraged. Regulatory authorities or individual citizens who bring 
civil actions under SMCRA may attempt to assign the liabilities of our coal lessees to us if any of these lessees are not financially 
capable of fulfilling those obligations.

Mining Permits and Approvals

Numerous governmental permits or approvals such as those required by SMCRA and the Clean Water Act are required for 
mining operations. In connection with obtaining these permits and approvals, our lessees may be required to prepare and present 
to federal, state or local authorities data pertaining to the effect or impact that any proposed production of coal may have upon the 
environment.  The  requirements  imposed  by  any  of  these  authorities  may  be  costly  and  time  consuming  and  may  delay 
commencement or continuation of mining operations.

In order to obtain mining permits and approvals from state regulatory authorities, mine operators, including our lessees, must 
submit a reclamation plan for reclaiming the mined property upon the completion of mining operations. Our lessees have obtained 
or applied for permits to mine a majority of the reserves that are currently planned to be mined over the next five years. Our lessees 
are also in the planning phase for obtaining permits for the additional reserves planned to be mined over the following five years. 
However, given the imposition of new requirements in the permits in the form of policies and the increased oversight review that 
has been exercised by EPA, there are no assurances that they will not experience difficulty and delays in obtaining mining permits 
in the future. In addition, EPA has used its authority to create significant delays in the issuance of new permits and the modification 
of existing permits, which has led to substantial delays and increased costs for coal operators.

Regulations under SMCRA include a "stream buffer zone" rule that prohibits certain mining activities near streams. In 2008, 
the federal Office of Surface Mining (OSM), which implements SMCRA, revised the stream buffer zone rule, making it more 
clear that valley fills are not prohibited by the rule. Environmental groups challenged the revision to the buffer zone rule in federal 
court. In February 2014, the federal court vacated the 2008 rule and in December 2014, OSM reinstated the previous version of 
the rule, without clarifying whether the previous version of the rule impacts the ability to construct excess fills. OSM has stated 
that it is considering future revisions to the buffer zone rule. Any revision or interpretation of the rule limiting or prohibiting valley 
fills could restrict our lessees’ ability to develop new mines, or could require our lessees to modify existing operations, which 
could have an adverse effect on our coal-related revenues.

In April 2013, in (cid:48)(cid:76)(cid:81)(cid:74)(cid:82)(cid:3)(cid:47)(cid:82)(cid:74)(cid:68)(cid:81)(cid:3)(cid:38)(cid:82)(cid:68)(cid:79)(cid:3)(cid:38)(cid:82)(cid:80)(cid:83)(cid:68)(cid:81)(cid:92)(cid:3)(cid:89)(cid:17)(cid:3)(cid:40)(cid:51)(cid:36), the D.C. Circuit Court ruled that EPA has the authority under the Clean 
Water Act to retroactively veto a Section 404 dredge and fill permit issued at a coal mine by the U.S. Army Corps of Engineers. 
The decision creates uncertainties for all companies operating with Clean Water Act fill permits and their business partners. While 

23

the specific facts of this case relate to ongoing fill activities, the broadly written language of the decision could have sweeping 
implications in other areas and result in increased regulatory activity by EPA that is adverse to the mining industry.

(cid:47)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:50)(cid:69)(cid:71)(cid:85)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:33)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:35)(cid:82)(cid:85)(cid:68)(cid:69)(cid:0)(cid:47)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:46)(cid:65)(cid:84)(cid:85)(cid:82)(cid:65)(cid:76)(cid:0)(cid:39)(cid:65)(cid:83)(cid:0)(cid:41)(cid:78)(cid:68)(cid:85)(cid:83)(cid:84)(cid:82)(cid:89)

Hydraulic Fracturing

The exploration and production companies that operate the crude oil and natural gas properties in which we have interests 
use hydraulic fracturing to recover oil and natural gas from tight rock formations. Hydraulic fracturing is a process customary to 
the oil and gas industry in which water, sand and other additives are pumped under high pressure into tight rock formations in a 
manner that creates or expands fractures in the rock to facilitate oil and gas recovery. While hydraulic fracturing has been used to 
recover oil and natural gas for decades, the practice has recently received increased scrutiny from various federal, state and local 
agencies, some of which have prohibited the practice or called for further study of its effects. Future requirements that limit or 
more strictly regulate the permitting or use of hydraulic fracturing could impact revenues from our oil and natural gas properties.

Permitting

Additionally, state agencies are generally charged with issuing permits governing the location and construction of drilling 
sites. Delays or failures to obtain such permits due to local land use or environmental concerns could negatively impact revenues 
from our oil and gas operations.

Transportation

Our revenues could be negatively impacted if the Federal Energy Regulatory Commission, which approves interstate pipelines 
and certain gathering lines, fails to timely approve pipelines that transport oil or natural gas produced from the properties in which 
we own interests. Additionally, our oil and natural gas revenues could be negatively impacted by rules proposed in July 2014 by 
the United States Department of Transportation governing the transportation of crude oil by rail. As proposed, the rules would 
require thousands of railroad tank cars to be upgraded or phased out by 2017. Railroad tank car shortages resulting from the 
proposed rule could delay or increase the costs of transportation of crude oil from our Williston Basin non-operated working 
interests and negatively impact revenues from those properties.

Employees and Labor Relations

We historically have not had any employees. To carry out our operations, affiliates of our general partner employ 88 people 
who directly support our operations. None of these employees are subject to a collective bargaining agreement. As a result of our 
acquisition of VantaCore in the fourth quarter of 2014, we employ 225 people who support VantaCore’s construction aggregates 
mining and production operations. None of these employees are subject to a collective bargaining agreement.

Website Access to Company Reports

Our internet address is (cid:90)(cid:90)(cid:90)(cid:17)(cid:81)(cid:85)(cid:83)(cid:79)(cid:83)(cid:17)(cid:70)(cid:82)(cid:80). We make available free of charge on or through our internet website our Annual 
Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or 
furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as reasonably practicable after we 
electronically file such material with, or furnish it to, the Securities and Exchange Commission. Also included on our website are 
our Code of Business Conduct and Ethics, our Disclosure Controls and Procedures Policy and our Corporate Governance Guidelines 
adopted by our Board of Directors, as well as the charter for our Audit Committee. Copies of our annual report, our Code of 
Business Conduct and Ethics, our Disclosure Controls and Procedures Policy, our Corporate Governance Guidelines and our 
committee charters will be made available upon written request.

24

 
ITEM 1A.  

RISK FACTORS 

Risks Related to Our Business 

(cid:52)(cid:79)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:69)(cid:88)(cid:84)(cid:69)(cid:78)(cid:84)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:66)(cid:79)(cid:65)(cid:82)(cid:68)(cid:0)(cid:79)(cid:70)(cid:0)(cid:68)(cid:73)(cid:82)(cid:69)(cid:67)(cid:84)(cid:79)(cid:82)(cid:83)(cid:0)(cid:68)(cid:69)(cid:69)(cid:77)(cid:83)(cid:0)(cid:65)(cid:80)(cid:80)(cid:82)(cid:79)(cid:80)(cid:82)(cid:73)(cid:65)(cid:84)(cid:69)(cid:12)(cid:0)(cid:73)(cid:84)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:68)(cid:69)(cid:84)(cid:69)(cid:82)(cid:77)(cid:73)(cid:78)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:70)(cid:85)(cid:82)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:68)(cid:69)(cid:67)(cid:82)(cid:69)(cid:65)(cid:83)(cid:69)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:65)(cid:77)(cid:79)(cid:85)(cid:78)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:81)(cid:85)(cid:65)(cid:82)(cid:84)(cid:69)(cid:82)(cid:76)(cid:89)(cid:0)
(cid:68)(cid:73)(cid:83)(cid:84)(cid:82)(cid:73)(cid:66)(cid:85)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:79)(cid:82)(cid:0)(cid:83)(cid:85)(cid:83)(cid:80)(cid:69)(cid:78)(cid:68)(cid:0)(cid:79)(cid:82)(cid:0)(cid:69)(cid:76)(cid:73)(cid:77)(cid:73)(cid:78)(cid:65)(cid:84)(cid:69)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:68)(cid:73)(cid:83)(cid:84)(cid:82)(cid:73)(cid:66)(cid:85)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:65)(cid:76)(cid:84)(cid:79)(cid:71)(cid:69)(cid:84)(cid:72)(cid:69)(cid:82)(cid:14)

Because distributions on the common units are dependent on the amount of cash we generate, distributions fluctuate based 
on our performance. The actual amount of cash that is available to be distributed each quarter depends on numerous factors, some 
of which are beyond our control and the control of the general partner. The actual amount of cash we have to distribute each quarter 
is reduced by payments in respect of debt service and other contractual obligations, fixed charges, maintenance capital expenditures 
and reserves for future operating or capital needs that the board of directors may determine are appropriate. Cash distributions are 
dependent primarily on cash flow, and not solely on profitability, which is affected by non-cash items. Therefore, cash distributions 
might be made during periods when we record losses and might not be made during periods when we record profits. During 2015, 
given the downturns in the coal and oil and gas markets, together with our high leverage and debt service requirements, our board 
of directors reduced the distribution by over 87%. To the extent our board of directors deems appropriate, it may determine to 
further decrease the amount of the quarterly distribution or suspend or eliminate the distribution altogether. In addition, because 
our unitholders are required to pay income taxes on their respective shares of our taxable income, you may be required to pay 
taxes in excess of any future distributions we make. See"—Tax Risks to Common Unitholders—You are required to pay taxes on 
your share of our income even if you do not receive any cash distributions from us." Your share of our portfolio income may be 
taxable to you even though you receive other losses from our activities.

(cid:47)(cid:85)(cid:82)(cid:0)(cid:76)(cid:69)(cid:86)(cid:69)(cid:82)(cid:65)(cid:71)(cid:69)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:68)(cid:69)(cid:66)(cid:84)(cid:0)(cid:83)(cid:69)(cid:82)(cid:86)(cid:73)(cid:67)(cid:69)(cid:0)(cid:79)(cid:66)(cid:76)(cid:73)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:65)(cid:68)(cid:86)(cid:69)(cid:82)(cid:83)(cid:69)(cid:76)(cid:89)(cid:0)(cid:65)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:70)(cid:73)(cid:78)(cid:65)(cid:78)(cid:67)(cid:73)(cid:65)(cid:76)(cid:0)(cid:67)(cid:79)(cid:78)(cid:68)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)(cid:12)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:66)(cid:85)(cid:83)(cid:73)(cid:78)(cid:69)(cid:83)(cid:83)(cid:0)
(cid:80)(cid:82)(cid:79)(cid:83)(cid:80)(cid:69)(cid:67)(cid:84)(cid:83)(cid:14)(cid:0)(cid:0)

As of December 31, 2015, we and our subsidiaries had approximately $1.4 billion of total indebtedness. The terms and 
conditions governing our indebtedness, including NRP’s 9.125% senior notes, Opco’s revolving credit facility and senior notes, 
and NRP Oil and Gas’s revolving credit facility:

• 

• 

• 

• 

• 

• 

require us to meet certain leverage and interest coverage ratios;

require us to dedicate a substantial portion of our cash flow from operations to service our existing debt, thereby reducing 
the cash available to finance our operations and other business activities and could limit our flexibility in planning for or 
reacting to changes in our business and the industries in which we operate;

increase our vulnerability to economic downturns and adverse developments in our business;

limit our ability to access the bank and capital markets to raise capital on favorable terms or to obtain additional financing 
for working capital, capital expenditures or acquisitions or to refinance existing indebtedness;

place restrictions on our ability to obtain additional financing, make investments, lease equipment, sell assets and engage 
in business combinations;

place us at a competitive disadvantage relative to competitors with lower levels of indebtedness in relation to their overall 
size or less restrictive terms governing their indebtedness;

•  make it more difficult for us to satisfy our obligations under our debt agreements and increase the risk that we may default 

on our debt obligations; and

• 

limit management’s discretion in operating our business.

Our ability to meet our expenses and debt obligations will depend on our future performance, which will be affected by 
financial, business, economic, regulatory and other factors. We will not be able to control many of these factors, such as economic 
conditions and governmental regulation. We cannot be certain that our cash flow will be sufficient to allow us to pay the principal 
and interest on our debt and meet our other obligations. If we do not have sufficient funds, we may be required to refinance all or 
part of our existing debt, borrow more money, or sell assets or raise equity at unattractive prices. We are required to make substantial 
principal repayments each year in connection with Opco’s senior notes, with approximately $81 million due thereunder each year 
through 2018. In addition, Opco’s revolving credit facility matures in 2017, and NRP’s 9.125% senior notes mature in 2018. We 
will be required to repay or refinance the amounts coming due in 2017 and 2018 prior to their respective maturities. We may not 
be able to refinance these amounts on terms acceptable to us, if at all, or the borrowing capacity under Opco’s revolving credit 

25

facility may be substantially reduced. We may not be able to refinance our debt, sell assets, borrow more money or access the bank 
and capital markets on terms acceptable to us, if at all. Our ability to comply with the financial and other restrictive covenants in 
our debt agreements will be affected by the levels of cash flow from our operations and future events and circumstances beyond 
our control. Failure to comply with these covenants would result in an event of default under our indebtedness, and such an event 
of default could adversely affect our business, financial condition and results of operations.

The borrowing base under NRP Oil and Gas’s revolving credit facility is based on the value of our proved reserves and is 
redetermined on a semi-annual basis in May and October of each year. The current oil price environment or future declines in 
prices or reduced production from or development of our properties could result in a determination to lower the borrowing base 
by significant amounts. We expect that due to the current oil price environment, limited development will occur on our properties, 
which will result in a decline in our reserves. In such event, we may not be able to access funding under the facility necessary to 
operate our business and we could be required to repay any indebtedness in excess of the redetermined borrowing base.

We may not be able to refinance our debt, sell assets, borrow more money or access the bank and capital markets on terms 
acceptable to us, if at all. Our ability to comply with the financial and other restrictive covenants in our debt agreements will be 
affected by the levels of cash flow from our operations and future events and circumstances beyond our control. Failure to comply 
with these covenants would result in an event of default under our indebtedness, and such an event of default could adversely 
affect our business, financial condition and results of operations.

Due to the relatively high level of our indebtedness, we are pursuing or analyzing various alternatives to reduce the level of 
our long-term debt and lower our future debt obligations, including the application of proceeds from asset sales, further reductions 
in amount of cash distributed to our unitholders, possible debt repurchases, exchanges of existing debt securities for new debt 
securities and exchanges or conversions of existing debt securities for new equity securities, among other options. We may pursue 
any or all of these options without the approval of our unitholders or other stakeholders. 

(cid:55)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:66)(cid:69)(cid:0)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:69)(cid:88)(cid:69)(cid:67)(cid:85)(cid:84)(cid:69)(cid:0)(cid:79)(cid:78)(cid:0)(cid:65)(cid:78)(cid:0)(cid:65)(cid:83)(cid:83)(cid:69)(cid:84)(cid:0)(cid:83)(cid:65)(cid:76)(cid:69)(cid:0)(cid:83)(cid:84)(cid:82)(cid:65)(cid:84)(cid:69)(cid:71)(cid:89)(cid:0)(cid:73)(cid:78)(cid:0)(cid:70)(cid:85)(cid:82)(cid:84)(cid:72)(cid:69)(cid:82)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:83)(cid:84)(cid:82)(cid:65)(cid:84)(cid:69)(cid:71)(cid:73)(cid:67)(cid:0)(cid:80)(cid:76)(cid:65)(cid:78)(cid:12)(cid:0)(cid:87)(cid:72)(cid:73)(cid:67)(cid:72)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:72)(cid:65)(cid:86)(cid:69)(cid:0)(cid:65)(cid:0)(cid:77)(cid:65)(cid:84)(cid:69)(cid:82)(cid:73)(cid:65)(cid:76)(cid:0)(cid:65)(cid:68)(cid:86)(cid:69)(cid:82)(cid:83)(cid:69)(cid:0)
(cid:69)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:0)(cid:79)(cid:78)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:84)(cid:79)(cid:0)(cid:83)(cid:69)(cid:82)(cid:86)(cid:73)(cid:67)(cid:69)(cid:0)(cid:79)(cid:82)(cid:0)(cid:82)(cid:69)(cid:70)(cid:73)(cid:78)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:68)(cid:69)(cid:66)(cid:84)(cid:0)(cid:79)(cid:66)(cid:76)(cid:73)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:14)

As part of our deleveraging strategy, we intend to execute on strategic asset sales in order to pay down debt.  However, we 
may not be able to sell assets at attractive prices, or at all.  If we are unable to do so, our ability to execute on our strategic plan 
and deleverage may be adversely affected.  In addition, our revenues will decline as our reserves are depleted and our asset base 
is reduced in connection with any asset sales.

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Traditionally, we have accessed the debt and equity capital markets on a regular basis and have relied on bank credit facilities 
to finance our business activities. However, due to the current commodity price environment and the state of the coal markets in 
particular, we believe we do not currently have the ability to access either the debt or equity capital markets. In addition, the 
volatility in the energy industry combined with recent bankruptcies and additional perceived credit risks of companies with coal 
and/or oil and gas exposure has resulted in traditional bank lenders seeking to reduce or eliminate their lending exposure to these 
companies. Accordingly,  we  will  be  required  over  the  near  term  to  run  our  business  and  service  our  debt  through  cash  from 
operations or asset sales. In addition, we may be required to seek financing from non-traditional sources at unfavorable pricing or 
with unfavorable terms to run our business or to refinance or restructure our 2017 and 2018 debt maturities. 

26

(cid:38)(cid:79)(cid:82)(cid:69)(cid:83)(cid:73)(cid:71)(cid:72)(cid:84)(cid:0)(cid:37)(cid:78)(cid:69)(cid:82)(cid:71)(cid:89)(cid:7)(cid:83)(cid:0)(cid:36)(cid:69)(cid:69)(cid:82)(cid:0)(cid:50)(cid:85)(cid:78)(cid:0)(cid:77)(cid:73)(cid:78)(cid:69)(cid:0)(cid:73)(cid:83)(cid:0)(cid:67)(cid:85)(cid:82)(cid:82)(cid:69)(cid:78)(cid:84)(cid:76)(cid:89)(cid:0)(cid:73)(cid:68)(cid:76)(cid:69)(cid:68)(cid:0)(cid:65)(cid:83)(cid:0)(cid:65)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:69)(cid:76)(cid:69)(cid:86)(cid:65)(cid:84)(cid:69)(cid:68)(cid:0)(cid:67)(cid:65)(cid:82)(cid:66)(cid:79)(cid:78)(cid:0)(cid:77)(cid:79)(cid:78)(cid:79)(cid:88)(cid:73)(cid:68)(cid:69)(cid:0)(cid:76)(cid:69)(cid:86)(cid:69)(cid:76)(cid:83)(cid:0)(cid:65)(cid:84)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:77)(cid:73)(cid:78)(cid:69)(cid:14)(cid:0)(cid:41)(cid:70)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:77)(cid:73)(cid:78)(cid:69)(cid:0)
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(cid:66)(cid:69)(cid:0)(cid:65)(cid:68)(cid:86)(cid:69)(cid:82)(cid:83)(cid:69)(cid:76)(cid:89)(cid:0)(cid:65)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:69)(cid:68)(cid:14)

In late March 2015, elevated carbon monoxide readings were detected at Foresight Energy’s Deer Run mine, which we also 
refer to as our Hillsboro property, and coal production at the mine was idled. In July 2015, we received a notice from Foresight 
Energy declaring a force majeure event at the mine as a result of the elevated carbon monoxide levels. While we are disputing 
Foresight Energy’s claim and have filed a lawsuit in connection therewith, the effect of a valid force majeure declaration would 
relieve Foresight Energy of its obligation to pay us minimum deficiency payments of $7.5 million per quarter, or $30.0 million 
per year. Foresight Energy's failure to make the deficiency payment with respect to the second, third and fourth quarters of 2015 
resulted in a $16.2 million cash impact to us. Such amount will increase for each quarter during which mining operations continue 
to be idled. We do not currently have an estimate as to when the mine will resume coal production. If the mine remains idled for 
an extended period or if the mine is permanently closed, our financial condition could be adversely affected. See Item 3. "Legal 
Proceedings" included elsewhere in this Annual Report on Form 10-K for more information on our lawsuit against Foresight 
Energy.

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(cid:82)(cid:69)(cid:76)(cid:65)(cid:84)(cid:69)(cid:68)(cid:0)(cid:82)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:86)(cid:65)(cid:76)(cid:85)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:67)(cid:79)(cid:65)(cid:76)(cid:0)(cid:82)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:14)

Prices for both steam and metallurgical coal have declined substantially in recent years and remain at levels close to or below 
the level of operating costs for a number of our lessees. The prices our lessees receive for their coal depend upon factors beyond 
their or our control, including:

• 

• 

• 

• 

• 

• 

the supply of and demand for domestic and foreign coal;

domestic and foreign governmental regulations and taxes;

changes in fuel consumption patterns of electric power generators;

the price and availability of alternative fuels, especially natural gas;

global economic conditions, including the strength of the U.S. dollar relative to other currencies and the demand for steel;

the proximity to and capacity of transportation facilities;

•  weather conditions; and

• 

the effect of worldwide energy conservation measures.

Natural gas is the primary fuel that competes with steam coal for power generation. Relatively low natural gas prices have 
resulted in a number of utilities switching from steam coal to natural gas to the extent that it is practical to do so. This switching 
has resulted in a decline in steam coal prices, and to the extent that natural gas prices remain low, steam coal prices will also remain 
low. The closure of coal-fired power plants as a result of increased governmental regulations or the inability to comply with such 
regulations has also resulted in a decrease in the demand for steam coal.

Prices for metallurgical coal are also at multi-year lows due to global economic conditions. Our lessees produce a significant 
amount of the metallurgical coal that is used in both the U.S. and foreign steel industries. Since the amount of steel that is produced 
is tied to global economic conditions, a continuation of current conditions or a further decline in those conditions could result in 
the decline of steel, coke and metallurgical coal production. In addition, rising exports of metallurgical coal from Australia and a 
strong U.S. dollar continue to have a negative effect on prices received for metallurgical coal produced in the United States. Since 
metallurgical coal is priced higher than steam coal, some mines on our properties may only operate profitably if all or a portion 
of their production is sold as metallurgical coal. If these mines are unable to sell metallurgical coal, they may not be economically 
viable and may be temporarily idled or closed.

Lower prices have reduced the quantity of coal that may be economically produced from our properties, which has in turn 
reduced our coal-related revenues and the value of our coal reserves. Further declines or a continued low price environment could 
have an additional adverse effect on our coal-related revenues or the value of our reserves. A long term asset generally is deemed 
impaired when the future expected cash flow from its use and disposition is less than its book value. For the year ended December 31, 
2015, we recorded an impairment charge of $257.5 million relating to certain of our coal related properties. With the continued 

27

weakness in the coal markets, we intend to continue to closely monitor our coal assets impairment risk. Future impairment analyses 
could result in additional downward adjustments to the carrying value of our assets.

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Due  to  the  continued  challenges  in  the  coal  business,  a  number  of  coal  producers  have  filed  for  protection  under  U.S. 
bankruptcy laws in the past, including several of our coal lessees, such as Alpha, Patriot Coal Corporation and Arch Coal, Inc. 
Alpha, which is our second largest lessee after Foresight Energy, filed for bankruptcy in August 2015. While Alpha has recently 
filed a plan of reorganization with the bankruptcy court, we do not yet have certainty as to which, if any, of our leases will be 
accepted or assigned in the bankruptcy. To the extent our leases are accepted or assigned, pre-petition amounts will be cured in 
full, but we may ultimately make concessions in the financial terms of those leases in order for the reorganized company or new 
lessor to operate profitably going forward. To the extent our leases are rejected, Alpha’s operations on those leases will cease, and 
we will be unlikely to recover the full amount of our rejection damages claims. In addition, Foresight Energy is currently in default 
under certain of its debt obligations and is in negotiations with its creditors to avoid acceleration of its debts. If Foresight Energy 
is unable to come to an agreement with its creditors, it may also seek bankruptcy protection, which could have a material adverse 
effect on our business. More of our lessees may file for bankruptcy in the future, which will create additional uncertainty as to the 
future of operations on our properties and could have a material adverse effect on our business and results of operations.

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(cid:79)(cid:85)(cid:82)(cid:0)(cid:82)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:79)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:73)(cid:78)(cid:67)(cid:79)(cid:77)(cid:69)(cid:0)(cid:70)(cid:82)(cid:79)(cid:77)(cid:0)(cid:65)(cid:0)(cid:83)(cid:77)(cid:65)(cid:76)(cid:76)(cid:0)(cid:78)(cid:85)(cid:77)(cid:66)(cid:69)(cid:82)(cid:0)(cid:79)(cid:70)(cid:0)(cid:67)(cid:79)(cid:65)(cid:76)(cid:0)(cid:76)(cid:69)(cid:83)(cid:83)(cid:69)(cid:69)(cid:83)(cid:14)

In 2015, we derived 18% and 7% of our total revenues and other income from Foresight Energy and Alpha, respectively. As 
a result, we have significant concentration of revenues with these lessees. Alpha is currently in bankruptcy, and we do not know 
which of our leases might be assumed or rejected in the bankruptcy process. See "—Bankruptcies in the coal industry could have 
a material adverse effect on our business and results of operations." In addition, the idling of Foresight Energy’s Deer Run mine 
on our Hillsboro property has resulted in a significant cash impact to us. See "—Foresight Energy’s Deer Run mine is currently 
idled as a result of elevated carbon monoxide levels at the mine. If the mine remains idled for an extended period or does not 
resume operations, our financial condition and results of operations could be adversely affected." In addition to the extent our 
lessees merge, sell assets or otherwise consolidate, then our revenues could become more dependent on fewer mining companies.

(cid:45)(cid:73)(cid:78)(cid:73)(cid:78)(cid:71)(cid:0)(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:65)(cid:82)(cid:69)(cid:0)(cid:83)(cid:85)(cid:66)(cid:74)(cid:69)(cid:67)(cid:84)(cid:0)(cid:84)(cid:79)(cid:0)(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:82)(cid:73)(cid:83)(cid:75)(cid:83)(cid:0)(cid:84)(cid:72)(cid:65)(cid:84)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:0)(cid:73)(cid:78)(cid:0)(cid:76)(cid:79)(cid:87)(cid:69)(cid:82)(cid:0)(cid:82)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:83)(cid:0)(cid:84)(cid:79)(cid:0)(cid:85)(cid:83)(cid:14)

Our revenues are largely dependent on the level of production of minerals from our properties, and any interruptions to the 
production from our properties would reduce our revenues. The level of production is subject to operating conditions or events 
beyond our or our lessees’ control including:

• 

• 

the inability to acquire necessary permits or mining or surface rights;

changes or variations in geologic conditions, such as the thickness of the mineral deposits and, in the case of coal, the 
amount of rock embedded in or overlying the coal deposit;

•  mining and processing equipment failures and unexpected maintenance problems;

• 

• 

• 

• 

• 

the availability of equipment or parts and increased costs related thereto;

the availability of transportation facilities and interruptions due to transportation delays;

adverse weather and natural disasters, such as heavy rains and flooding;

labor-related interruptions; and

unexpected mine safety accidents, including fires and explosions.

As a result of recent judicial decisions and the increased involvement of the Obama Administration and EPA in the permitting 
process, there is substantial uncertainty relating to the ability of our coal lessees to be issued permits necessary to conduct mining 
operations. The non-issuance of permits has limited the ability of our coal lessees to open new operations, expand existing operations, 
and may preclude new acquisitions in which we might otherwise be involved. We and our lessees may also incur costs and liabilities 
resulting from claims for damages to property or injury to persons arising from our or their operations. If we or our lessees are 
pursued for these sanctions, costs and liabilities, mining operations and, as a result, our revenues could be adversely affected.

28

VantaCore currently operates four hard rock quarries, one underground limestone mine, six sand and gravel plants, two 
asphalt plants and two marine terminals. As an operator of these assets, we are exposed to risks that we have not historically been 
exposed to in our mineral rights and royalties business. Such risks include, but are not limited to, prices and demand for construction 
aggregates, capital and operating expenses necessary to maintain VantaCore’s operations, production levels, general economic 
conditions, conditions in the local markets that VantaCore serves, inclement or hazardous weather conditions and typically lower 
production levels in the winter months, permitting risk, fire, explosions or other accidents, and unanticipated geologic conditions. 
Any of these risks could result in damage to, or destruction of, VantaCore’s mining properties or production facilities, personal 
injury, environmental damage, delays in mining or processing, reduced revenue or losses or possible legal liability. In addition, 
not all of these risks are reasonably insurable, and our insurance coverage contains limits, deductibles, exclusions and endorsements. 
Our insurance coverage may not be sufficient to meet our needs in the event of loss. Any prolonged downtime or shutdowns at 
VantaCore’s mining properties or production facilities or material loss could have an adverse effect on our results of operations.

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The amount of coal consumed for domestic electric power generation is affected primarily by the overall demand for electricity, 
the price and availability of competing fuels for power plants and environmental and other governmental regulations. We expect 
that substantially all newly constructed power plants in the United States will be fired by natural gas because of lower construction 
and compliance costs compared to coal-fired plants and because natural gas is a cleaner burning fuel. The increasingly stringent 
requirements of rules and regulations promulgated under the federal Clean Air Act have resulted in more electric power generators 
shifting from coal to natural-gas-fired power plants, or to other alternative energy sources such as solar and wind. In addition, the 
proposed rules promulgated by the EPA on greenhouse gas emissions from new and existing power plants are expected to further 
limit the construction of new coal-fired generation plants in favor of alternative sources of energy and negatively affect the viability 
of coal-fired power generation. These changes have resulted in reduced coal consumption and the production of coal from our 
properties and are expected to continue to have an adverse effect on our coal-related revenues.

(cid:52)(cid:72)(cid:69)(cid:0)(cid:65)(cid:68)(cid:79)(cid:80)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:79)(cid:70)(cid:0)(cid:67)(cid:76)(cid:73)(cid:77)(cid:65)(cid:84)(cid:69)(cid:0)(cid:67)(cid:72)(cid:65)(cid:78)(cid:71)(cid:69)(cid:0)(cid:76)(cid:69)(cid:71)(cid:73)(cid:83)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:79)(cid:82)(cid:0)(cid:82)(cid:69)(cid:71)(cid:85)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:82)(cid:69)(cid:83)(cid:84)(cid:82)(cid:73)(cid:67)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:69)(cid:77)(cid:73)(cid:83)(cid:83)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:2)(cid:71)(cid:82)(cid:69)(cid:69)(cid:78)(cid:72)(cid:79)(cid:85)(cid:83)(cid:69)(cid:0)(cid:71)(cid:65)(cid:83)(cid:69)(cid:83)(cid:2)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:79)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:72)(cid:65)(cid:90)(cid:65)(cid:82)(cid:68)(cid:79)(cid:85)(cid:83)(cid:0)
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In December 2009, EPA determined that emissions of carbon dioxide, methane, and other GHGs, present an endangerment 
to  public  health  and  welfare  because  emissions  of  such  gases  are,  according  to  EPA,  contributing  to  warming  of  the  Earth’s 
atmosphere and other climatic changes. Based on its findings, EPA has begun adopting and implementing regulations to restrict 
emissions of GHGs under various provisions of the Clean Air Act.

In August 2015, EPA published its final Clean Power Plan Rule, a multi-factor plan designed to cut carbon pollution from 
existing power plants, including coal-fired power plants. The rule requires improving the heat rate of existing coal-fired power 
plants and substituting lower carbon-emission sources like natural gas and renewables in place of coal. The rule will force many 
existing coal-fired power plants to incur substantial costs in order to comply or alternatively result in the closure of some of these 
plants. This rule is being challenged by industry participants and other parties. In February, 2016, the Supreme Court of the United 
States stayed the Clean Power Plan Rule pending a decision by the District of Columbia Circuit as well as any subsequent review 
by the Supreme Court. To the extent the Clean Power Plan is upheld, it is expected to have a material adverse effect on the demand 
for coal by electric power generators.

In October 2015, EPA published its final rule on performance standards for greenhouse gas emissions from new, modified, 
and reconstructed electric generating units. The final rule requires new steam generating units to use highly efficient supercritical 
pulverized coal boilers that use partial post-combustion carbon capture and storage technology. The final emission standard is less 
stringent than EPA had originally proposed due to updated cost assumptions, but could still have a material adverse effect on new 
coal-fired power plants.

In addition to EPA’s GHG initiatives, there are several other federal rulemakings that are focused on emissions from coal-
fired electric generating facilities, including the Cross-State Air Pollution Rule (CSAPR), regulating emissions of nitrogen oxide 
and sulfur dioxide, and the Mercury and Air Toxics Rule (MATS), regulating emissions of hazardous air pollutants. Installation 
of additional emissions control technologies and other measures required under these and other EPA regulations have made it more 
costly to operate many coal-fired power plants and have resulted in and are expected to continue to result in plant closures. Further 
reductions in coal’s share of power generating capacity as a result of compliance with existing or proposed rules and regulations 
would have a material adverse effect on our coal-related revenues.

29

The emission of air pollutants from the exploration and development of crude oil and natural gas and related facilities is also 
subject to the Clean Air Act and comparable state laws. In 2012, EPA published final New Source Performance Standards for 
volatile organic compounds and sulfur dioxide and National Emissions Standards for Hazardous Air Pollutants associated with oil 
and gas facilities. In January 2013, EPA granted petitions asking the agency to reconsider and revise parts of this rule. Accordingly, 
in September 2013, EPA issued updates to the New Source Performance Standards for the emission of volatile organic compounds 
from storage vessels used in crude oil and natural gas production. Similarly, in December 2014, EPA finalized rules related to 
emissions from gas and liquids during well completion. These rules could have an adverse effect on revenues from our interests 
in oil and natural gas properties.

In August 2015, EPA proposed new regulations to reduce emissions of methane from crude oil and natural gas production 
and transportation activities such as wells, pipelines, and valves levels by up to 45 percent by 2025 (compared to 2012 levels).  A 
final rule is expected in 2016.

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The operations of our lessees, VantaCore and Ciner Wyoming are subject to stringent health and safety standards under 
increasingly strict federal, state and local environmental, health and safety laws, including mine safety regulations and governmental 
enforcement policies. The oil and gas industry is also subject to numerous laws and regulations. Failure to comply with these laws 
and regulations may result in the assessment of administrative, civil and criminal penalties, the imposition of cleanup and site 
restoration costs and liens, the issuance of injunctions to limit or cease operations, the suspension or revocation of permits and 
other enforcement measures that could have the effect of limiting production from our properties.

New environmental legislation, new regulations and new interpretations of existing environmental laws, including regulations 
governing  permitting  requirements,  could  further  regulate  or  tax  the  mining  and  oil  and  gas industries  and  may  also  require 
significant changes to operations, the incurrence of increased costs or the requirement to obtain new or different permits, any of 
which could decrease our revenues and have a material adverse effect on our financial condition or results of operations.

In addition to governmental regulation, private citizens’ groups have continued to be active in bringing lawsuits against coal 
mine  operators  and  landowners.  Since  2012,  several  citizen  suit  group  lawsuits  have  been  filed  against  mine  operators  and 
landowners for alleged violations of water quality standards resulting from ongoing discharges of pollutants from reclaimed mining 
operations, including selenium and conductivity. NRP has been named as a defendant in one of these lawsuits. The citizen suit 
groups have sought penalties as well as injunctive relief that would limit future discharges of these pollutants, which would result 
in significant expenses for our lessees. While it is too early to determine the merits or measure the impact of these lawsuits, any 
determination that a landowner or lessee has liability for discharges from a previously reclaimed mine site would result in uncertainty 
as to continuing liability for completed and reclaimed coal mine operations and could result in substantial compliance costs or 
fines.

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(cid:71)(cid:65)(cid:83)(cid:0)(cid:80)(cid:82)(cid:73)(cid:67)(cid:69)(cid:83)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:72)(cid:65)(cid:86)(cid:69)(cid:0)(cid:65)(cid:78)(cid:0)(cid:65)(cid:68)(cid:86)(cid:69)(cid:82)(cid:83)(cid:69)(cid:0)(cid:69)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:0)(cid:79)(cid:78)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)

Crude oil and natural gas prices are subject to wide fluctuations in response to relatively minor changes in supply and demand 

and on numerous other factors beyond our control, including:

• 

• 

• 

• 

• 

• 

• 

• 

domestic and foreign supply of oil and natural gas;

the level of prices and expectations about future prices of oil and natural gas;

the level of global oil and natural gas exploration and production;

the cost of exploring for, developing, producing and delivering oil and natural gas;

the price and quantity of foreign imports;

political and economic conditions in oil producing countries, including the Middle East, Africa, South America and Russia;

the actions of the Organization of Petroleum Exporting Countries with respect to oil price and production controls;

speculative trading in crude oil and natural gas derivative contracts;

30

• 

the level of consumer product demand;

•  weather conditions and other natural disasters;

• 

• 

• 

• 

• 

• 

• 

risks associated with drilling and completion operations;

technological advances affecting energy consumption;

domestic and foreign governmental regulations and taxes;

the continued threat of terrorism and the impact of military and other action, including U.S. military operations in the 
Middle East;

the proximity, cost, availability and capacity of oil and natural gas pipelines and other transportation facilities and the 
resulting differentials to market index prices;

the price and availability of alternative fuels; and

overall domestic and global economic conditions, including the relative value of the U.S. dollar to other currencies.

Due to global oversupply of crude oil in part due to increasing U.S. production and a strong U.S. dollar, crude oil prices have 
been at multi-year lows since late 2014. In addition, natural gas prices have also fallen to low levels due to record high levels of 
production and robust storage inventories. These markets will likely continue to be volatile in the future, and any extended period 
of low prices could have a material adverse effect on our results of operations from our oil and gas business. For the year ended 
December 31, 2015, we recorded an impairment charge of $367.6 million relating to certain of our oil and gas properties. With 
the continued weakness in the oil and gas markets, we intend to continue to closely monitor our oil and gas assets impairment risk. 
Future impairment analyses could result in additional downward adjustments to the carrying value of our assets.

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The market price of soda ash directly affects the profitability of Ciner Wyoming’s soda ash production operations. If the 
market price for soda ash declines, Ciner Wyoming’s sales will decrease. Historically, the global market and, to a lesser extent, 
the domestic market for soda ash have been volatile, and those markets are likely to remain volatile in the future. The prices Ciner 
Wyoming receives for its soda ash depend on numerous factors beyond Ciner Wyoming’s control, including worldwide and regional 
economic and political conditions impacting supply and demand. Glass manufacturers and other industrial customers drive most 
of the demand for soda ash, and these customers experience significant fluctuations in demand and production costs. Competition 
from increased use of glass substitutes, such as plastic and recycled glass, has had a negative effect on demand for soda ash. 
Substantial or extended declines in prices for soda ash could have a material adverse effect on our results of operations. In addition, 
Ciner Wyoming relies on natural gas as the main energy source in its soda ash production process. Accordingly, high natural gas 
prices increase Ciner Wyoming’s cost of production and affect its competitive cost position when compared to other foreign and 
domestic soda ash producers.

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The construction aggregates industry is highly fragmented with a large number of independent local producers in operating 
in VantaCore’s local markets. Additionally, VantaCore also competes against large private and public companies, some of which 
are significantly vertically integrated. Therefore, there is intense competition in a number of markets in which VantaCore operates. 
This significant competition could lead to lower prices and lower sales volumes in some markets, negatively affecting our earnings 
and cash flows.

In addition, commercial and residential construction levels generally move with economic cycles. When the economy is 
strong, construction levels rise and when the economy is weak, construction levels fall. The U.S. economy is recovering from the 
2008-2009 recession, but the pace of recovery is slow. Since construction activity generally lags the recovery after down cycles, 
construction projects have not returned to their pre-recession levels.

31

(cid:41)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:76)(cid:69)(cid:83)(cid:83)(cid:69)(cid:69)(cid:83)(cid:0)(cid:68)(cid:79)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:77)(cid:65)(cid:78)(cid:65)(cid:71)(cid:69)(cid:0)(cid:84)(cid:72)(cid:69)(cid:73)(cid:82)(cid:0)(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:87)(cid:69)(cid:76)(cid:76)(cid:12)(cid:0)(cid:84)(cid:72)(cid:69)(cid:73)(cid:82)(cid:0)(cid:80)(cid:82)(cid:79)(cid:68)(cid:85)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:86)(cid:79)(cid:76)(cid:85)(cid:77)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:82)(cid:79)(cid:89)(cid:65)(cid:76)(cid:84)(cid:89)(cid:0)(cid:82)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:83)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:68)(cid:69)(cid:67)(cid:82)(cid:69)(cid:65)(cid:83)(cid:69)(cid:14)

We depend on our lessees to effectively manage their operations on our properties. Our lessees make their own business 

decisions with respect to their operations within the constraints of their leases, including decisions relating to:

• 

the payment of minimum royalties;

•  marketing of the minerals mined;

•  mine plans, including the amount to be mined and the method of mining;

• 

• 

• 

• 

• 

• 

• 

• 

• 

processing and blending minerals;

expansion plans and capital expenditures;

credit risk of their customers;

permitting;

insurance and surety bonding;

acquisition of surface rights and other mineral estates;

employee wages;

transportation arrangements;

compliance with applicable laws, including environmental laws; and

•  mine closure and reclamation.

A failure on the part of one of our lessees to make royalty payments, including minimum royalty payments, could give us 
the right to terminate the lease, repossess the property and enforce payment obligations under the lease. If we repossessed any of 
our properties, we would seek a replacement lessee. We might not be able to find a replacement lessee and, if we did, we might 
not be able to enter into a new lease on favorable terms within a reasonable period of time. In addition, the existing lessee could 
be subject to bankruptcy proceedings that could further delay the execution of a new lease or the assignment of the existing lease 
to another operator. If we enter into a new lease, the replacement operator might not achieve the same levels of production or sell 
minerals at the same price as the lessee it replaced. In addition, it may be difficult for us to secure new or replacement lessees for 
small or isolated mineral reserves.

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(cid:68)(cid:79)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:69)(cid:88)(cid:80)(cid:69)(cid:82)(cid:73)(cid:69)(cid:78)(cid:67)(cid:69)(cid:0)(cid:73)(cid:78)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:82)(cid:79)(cid:89)(cid:65)(cid:76)(cid:84)(cid:89)(cid:0)(cid:66)(cid:85)(cid:83)(cid:73)(cid:78)(cid:69)(cid:83)(cid:83)(cid:14)

We do not have control over the operations of Ciner Wyoming or our non-operated oil and gas working interest properties. 
We have limited approval rights with respect to Ciner Wyoming, and our partner controls most business decisions, including 
decisions with respect to distributions and capital expenditures. Adverse developments in Ciner Wyoming’s business would result 
in decreased distributions to NRP. The oil and gas properties in which we own working interests are operated by third-party 
operators and involve third-party working interest owners. We have limited ability to influence or control the operation or future 
development of such properties, including compliance with environmental, safety and other regulations, or the amount of capital 
expenditures required to fund such properties. These limitations and our dependence on the operator and other working interest 
owners for these projects could cause us to incur unexpected future costs and materially adversely affect our financial condition 
and results of operations. In addition, we are ultimately responsible for operating the transportation infrastructure at Foresight’s 
Williamson mine, and have assumed the capital and operating risks associated with that business. As a result of these investments, 
we could experience increased costs as well as increased liability exposure associated with operating these facilities.

32

(cid:41)(cid:78)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:67)(cid:85)(cid:82)(cid:82)(cid:69)(cid:78)(cid:84)(cid:0)(cid:79)(cid:73)(cid:76)(cid:0)(cid:80)(cid:82)(cid:73)(cid:67)(cid:69)(cid:0)(cid:69)(cid:78)(cid:86)(cid:73)(cid:82)(cid:79)(cid:78)(cid:77)(cid:69)(cid:78)(cid:84)(cid:12)(cid:0)(cid:87)(cid:69)(cid:0)(cid:68)(cid:79)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:69)(cid:88)(cid:80)(cid:69)(cid:67)(cid:84)(cid:0)(cid:84)(cid:79)(cid:0)(cid:69)(cid:88)(cid:80)(cid:69)(cid:78)(cid:68)(cid:0)(cid:83)(cid:73)(cid:71)(cid:78)(cid:73)(cid:70)(cid:73)(cid:67)(cid:65)(cid:78)(cid:84)(cid:0)(cid:67)(cid:65)(cid:80)(cid:73)(cid:84)(cid:65)(cid:76)(cid:0)(cid:84)(cid:79)(cid:0)(cid:68)(cid:69)(cid:86)(cid:69)(cid:76)(cid:79)(cid:80)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:79)(cid:73)(cid:76)(cid:0)(cid:82)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:12)(cid:0)(cid:87)(cid:72)(cid:73)(cid:67)(cid:72)(cid:0)(cid:87)(cid:73)(cid:76)(cid:76)(cid:0)(cid:76)(cid:69)(cid:65)(cid:68)(cid:0)
(cid:84)(cid:79)(cid:0)(cid:65)(cid:0)(cid:68)(cid:69)(cid:67)(cid:76)(cid:73)(cid:78)(cid:69)(cid:0)(cid:73)(cid:78)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:86)(cid:65)(cid:76)(cid:85)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:80)(cid:82)(cid:79)(cid:80)(cid:69)(cid:82)(cid:84)(cid:73)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:65)(cid:0)(cid:68)(cid:69)(cid:67)(cid:76)(cid:73)(cid:78)(cid:69)(cid:0)(cid:73)(cid:78)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:79)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:78)(cid:65)(cid:84)(cid:85)(cid:82)(cid:65)(cid:76)(cid:0)(cid:71)(cid:65)(cid:83)(cid:0)(cid:82)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:14)

The oil and natural gas industry is capital intensive, with significant development capital required to be expended to offset 
natural production declines. In the current oil price environment, we do not expect to expend significant development capital, 
which will lead to a decline in the value of our properties and our oil and gas reserves.  Such declines will likely result in adjustments 
to the borrowing base under NRP Oil and Gas’s revolving credit facility. To the extent the borrowing base is redetermined to an 
amount less than the amount we have outstanding under that facility, we will be required to repay the facility down to the new 
borrowing base. For more information on the NRP Oil and Gas revolving credit facility, see "—Our leverage and debt service 
obligations may adversely affect our financial condition, results of operations and business prospects.

To the extent the operators of our properties determine to continue drilling in the current environment, we would be required 
to fund our proportionate share on any wells in which we own working interests in order to participate in those wells. Our share 
of capital expenditures relating to our working interests could exceed our revenues from those interests. Moreover, we are dependent 
on the other working interest owners of such projects to fund their contractual share of the capital expenditures of such projects. 
Our operations and other capital resources may not provide cash in sufficient amounts to maintain planned or future levels of 
capital expenditures. Further, our actual capital expenditures could exceed our capital expenditure budget. In the event our capital 
expenditure requirements at any time are greater than the amount of capital we have available, we could be required to seek 
additional sources of capital, which may include additional reserve based borrowings, debt financing, joint venture partnerships, 
production payment financings, sales of assets, offerings of debt or equity securities or other means. If we are unable to fund our 
capital requirements, we may be required to decline to participate in wells, which in turn could lead to a decline in the value of 
our assets or a decline in our oil and natural gas reserves.

(cid:38)(cid:76)(cid:85)(cid:67)(cid:84)(cid:85)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:73)(cid:78)(cid:0)(cid:84)(cid:82)(cid:65)(cid:78)(cid:83)(cid:80)(cid:79)(cid:82)(cid:84)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:67)(cid:79)(cid:83)(cid:84)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:65)(cid:86)(cid:65)(cid:73)(cid:76)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:79)(cid:82)(cid:0)(cid:82)(cid:69)(cid:76)(cid:73)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:79)(cid:70)(cid:0)(cid:84)(cid:82)(cid:65)(cid:78)(cid:83)(cid:80)(cid:79)(cid:82)(cid:84)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:82)(cid:69)(cid:68)(cid:85)(cid:67)(cid:69)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:80)(cid:82)(cid:79)(cid:68)(cid:85)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:79)(cid:70)(cid:0)(cid:67)(cid:79)(cid:65)(cid:76)(cid:12)(cid:0)(cid:79)(cid:73)(cid:76)(cid:0)
(cid:65)(cid:78)(cid:68)(cid:0)(cid:71)(cid:65)(cid:83)(cid:12)(cid:0)(cid:83)(cid:79)(cid:68)(cid:65)(cid:0)(cid:65)(cid:83)(cid:72)(cid:12)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:79)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:77)(cid:73)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:83)(cid:0)(cid:70)(cid:82)(cid:79)(cid:77)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:80)(cid:82)(cid:79)(cid:80)(cid:69)(cid:82)(cid:84)(cid:73)(cid:69)(cid:83)(cid:14)

Transportation costs represent a significant portion of the total delivered cost for the customers of our lessees. Increases in 
transportation costs could make coal a less competitive source of energy or could make minerals produced by some or all of our 
lessees less competitive than coal produced from other sources. On the other hand, significant decreases in transportation costs 
could result in increased competition for our lessees from producers in other parts of the country.

Our lessees depend upon railroads, barges, trucks and beltlines to deliver minerals to their customers. Disruption of those 
transportation services due to weather-related problems, mechanical difficulties, strikes, lockouts, bottlenecks and other events 
could temporarily impair the ability of our lessees to supply minerals to their customers. Our lessees’ transportation providers may 
face difficulties in the future that may impair the ability of our lessees to supply minerals to their customers, resulting in decreased 
royalty revenues to us.

In addition, Ciner Wyoming transports its soda ash by rail or truck and ocean vessel. As a result, its business and financial 
results are sensitive to increases in rail freight, trucking and ocean vessel rates. Increases in transportation costs, including increases 
resulting from emission control requirements, port taxes and fluctuations in the price of fuel, could make soda ash a less competitive 
product for glass manufacturers when compared to glass substitutes or recycled glass, or could make Ciner Wyoming’s soda ash 
less competitive than soda ash produced by competitors that have other means of transportation or are located closer to their 
customers. Ciner Wyoming may be unable to pass on its freight and other transportation costs in full because market prices for 
soda ash are generally determined by supply and demand forces. In addition, rail operations are subject to various risks that may 
result in a delay or lack of service at Ciner Wyoming’s facility, and alternative methods of transportation are impracticable or cost-
prohibitive.  During 2015, Ciner Wyoming shipped substantially all of its soda ash by rail and Ciner Wyoming relies on the rail 
line to service its facilities under a contract that expires in 2017. Any substantial interruption in or increased costs related to the 
transportation of Ciner Wyoming’s soda ash or the failure to renew the rail contract on favorable terms could have a material 
adverse effect on our financial condition and results of operations.

The marketability of our crude oil and natural gas production depends in part on the availability, proximity and capacity of 
pipeline and rail systems owned by third parties. The lack or unavailability of capacity on these systems and facilities could result 
in the shut-in of producing wells or the delay, or discontinuance of, development plans for properties in which we own oil and gas 
interests. In addition, as a result of pipeline constraints in the Williston Basin, a significant amount of crude oil production from 
the region is transported by rail. Train derailments in the U.S. and Canada have resulted in increased regulatory scrutiny of the 

33

transportation of crude oil by rail. Any resulting regulations could result in increased transportation costs, which would negatively 
affect our profitability from our Williston Basin assets.

(cid:47)(cid:85)(cid:82)(cid:0)(cid:82)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:0)(cid:69)(cid:83)(cid:84)(cid:73)(cid:77)(cid:65)(cid:84)(cid:69)(cid:83)(cid:0)(cid:68)(cid:69)(cid:80)(cid:69)(cid:78)(cid:68)(cid:0)(cid:79)(cid:78)(cid:0)(cid:77)(cid:65)(cid:78)(cid:89)(cid:0)(cid:65)(cid:83)(cid:83)(cid:85)(cid:77)(cid:80)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:84)(cid:72)(cid:65)(cid:84)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:66)(cid:69)(cid:0)(cid:73)(cid:78)(cid:65)(cid:67)(cid:67)(cid:85)(cid:82)(cid:65)(cid:84)(cid:69)(cid:12)(cid:0)(cid:87)(cid:72)(cid:73)(cid:67)(cid:72)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:77)(cid:65)(cid:84)(cid:69)(cid:82)(cid:73)(cid:65)(cid:76)(cid:76)(cid:89)(cid:0)(cid:65)(cid:68)(cid:86)(cid:69)(cid:82)(cid:83)(cid:69)(cid:76)(cid:89)(cid:0)(cid:65)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:81)(cid:85)(cid:65)(cid:78)(cid:84)(cid:73)(cid:84)(cid:73)(cid:69)(cid:83)(cid:0)
(cid:65)(cid:78)(cid:68)(cid:0)(cid:86)(cid:65)(cid:76)(cid:85)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:82)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)(cid:14)

Coal,  aggregates  and  industrial  minerals,  and  oil  and  natural  gas  reserve  engineering  requires  subjective  estimates  of 
underground accumulations of coal, aggregates and industrial minerals, and oil and natural gas and assumptions and are by nature 
imprecise. Our reserve estimates may vary substantially from the actual amounts of coal, aggregates and industrial minerals, or 
oil and natural gas recovered from our reserves. There are numerous uncertainties inherent in estimating quantities of reserves, 
including many factors beyond our control. Estimates of reserves necessarily depend upon a number of variables and assumptions, 
any one of which may, if incorrect, result in an estimate that varies considerably from actual results. These factors and assumptions 
relate to:

• 

• 

• 

• 

• 

future prices, operating costs, capital expenditures, severance and excise taxes, and development and reclamation costs;

production levels;

future technology improvements;

the effects of regulation by governmental agencies; and

geologic and mining conditions, which may not be fully identified by available exploration data.

Actual production, revenue and expenditures with respect to our reserves will likely vary from estimates, and these variations 

may be material. As a result, you should not place undue reliance on our reserve data that is included in this report.

(cid:55)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:73)(cid:78)(cid:67)(cid:85)(cid:82)(cid:0)(cid:76)(cid:79)(cid:83)(cid:83)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:66)(cid:69)(cid:0)(cid:83)(cid:85)(cid:66)(cid:74)(cid:69)(cid:67)(cid:84)(cid:0)(cid:84)(cid:79)(cid:0)(cid:76)(cid:73)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:67)(cid:76)(cid:65)(cid:73)(cid:77)(cid:83)(cid:0)(cid:65)(cid:83)(cid:0)(cid:65)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:79)(cid:87)(cid:78)(cid:69)(cid:82)(cid:83)(cid:72)(cid:73)(cid:80)(cid:0)(cid:79)(cid:70)(cid:0)(cid:87)(cid:79)(cid:82)(cid:75)(cid:73)(cid:78)(cid:71)(cid:0)(cid:73)(cid:78)(cid:84)(cid:69)(cid:82)(cid:69)(cid:83)(cid:84)(cid:83)(cid:0)(cid:73)(cid:78)(cid:0)(cid:79)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:78)(cid:65)(cid:84)(cid:85)(cid:82)(cid:65)(cid:76)(cid:0)(cid:71)(cid:65)(cid:83)(cid:0)
(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:14)(cid:0)(cid:33)(cid:68)(cid:68)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)(cid:65)(cid:76)(cid:76)(cid:89)(cid:12)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:73)(cid:78)(cid:83)(cid:85)(cid:82)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:66)(cid:69)(cid:0)(cid:73)(cid:78)(cid:65)(cid:68)(cid:69)(cid:81)(cid:85)(cid:65)(cid:84)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:80)(cid:82)(cid:79)(cid:84)(cid:69)(cid:67)(cid:84)(cid:0)(cid:85)(cid:83)(cid:0)(cid:65)(cid:71)(cid:65)(cid:73)(cid:78)(cid:83)(cid:84)(cid:0)(cid:84)(cid:72)(cid:69)(cid:83)(cid:69)(cid:0)(cid:82)(cid:73)(cid:83)(cid:75)(cid:83)(cid:14)

As an owner of working interests in oil and natural gas operations, we are responsible for our proportionate share of any 
losses and liabilities arising from uninsured and underinsured events, which could adversely affect our business, financial condition 
or results of operations. We are subject to all of the risks associated with drilling for and producing crude oil and natural gas, 
including the possibility of:

• 

environmental hazards, such as uncontrollable flows of crude oil, natural gas, brine, well fluids, hydraulic fracturing fluids, 
and toxic gas or other pollutants into the environment, including groundwater and shoreline contamination;

• 

abnormally pressured formations;

•  mechanical difficulties, such as stuck oilfield drilling and service tools and casing collapse;

• 

• 

• 

• 

fires, explosions and ruptures of pipelines;

personal injuries and death;

natural disasters; and

spillage or mishandling of crude oil, natural gas, brine, well fluids, hydraulic fracturing fluids, toxic gas or other pollutants 
by third party service providers.

Any of these risks could adversely affect our ability to conduct operations or result in substantial losses to us as a result of:

• 

• 

• 

• 

• 

• 

injury or loss of life;

damage to and destruction of property, natural resources and equipment;

pollution and other environmental damage;

regulatory investigations and penalties;

suspension of our operations; and

repair and remediation costs.

34

We may elect not to obtain insurance if we believe the cost of available insurance is excessive relative to the risks presented. 
In addition, pollution and environmental risks generally are not fully insurable. The occurrence of an event that is not fully covered 
by insurance could have a material adverse effect on our business, financial condition and results of operations.

(cid:47)(cid:85)(cid:82)(cid:0)(cid:76)(cid:69)(cid:83)(cid:83)(cid:69)(cid:69)(cid:83)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:83)(cid:65)(cid:84)(cid:73)(cid:83)(cid:70)(cid:89)(cid:0)(cid:79)(cid:66)(cid:76)(cid:73)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:84)(cid:79)(cid:0)(cid:84)(cid:72)(cid:69)(cid:73)(cid:82)(cid:0)(cid:67)(cid:85)(cid:83)(cid:84)(cid:79)(cid:77)(cid:69)(cid:82)(cid:83)(cid:0)(cid:87)(cid:73)(cid:84)(cid:72)(cid:0)(cid:77)(cid:73)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:83)(cid:0)(cid:70)(cid:82)(cid:79)(cid:77)(cid:0)(cid:80)(cid:82)(cid:79)(cid:80)(cid:69)(cid:82)(cid:84)(cid:73)(cid:69)(cid:83)(cid:0)(cid:79)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:84)(cid:72)(cid:65)(cid:78)(cid:0)(cid:79)(cid:85)(cid:82)(cid:83)(cid:12)(cid:0)(cid:68)(cid:69)(cid:80)(cid:82)(cid:73)(cid:86)(cid:73)(cid:78)(cid:71)(cid:0)(cid:85)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)
(cid:84)(cid:79)(cid:0)(cid:82)(cid:69)(cid:67)(cid:69)(cid:73)(cid:86)(cid:69)(cid:0)(cid:65)(cid:77)(cid:79)(cid:85)(cid:78)(cid:84)(cid:83)(cid:0)(cid:73)(cid:78)(cid:0)(cid:69)(cid:88)(cid:67)(cid:69)(cid:83)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:77)(cid:73)(cid:78)(cid:73)(cid:77)(cid:85)(cid:77)(cid:0)(cid:82)(cid:79)(cid:89)(cid:65)(cid:76)(cid:84)(cid:89)(cid:0)(cid:80)(cid:65)(cid:89)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)(cid:14)

Mineral supply contracts generally do not require operators to satisfy their obligations to their customers with resources 
mined from specific reserves. Several factors may influence a lessee’s decision to supply its customers with minerals mined from 
properties we do not own or lease, including the royalty rates under the lessee’s lease with us, mining conditions, mine operating 
costs, cost and availability of transportation, and customer specifications. In addition, lessees move on and off of our properties 
over the course of any given year in accordance with their mine plans. If a lessee satisfies its obligations to its customers with 
minerals from properties we do not own or lease, production on our properties will decrease, and we will receive lower royalty 
revenues.

(cid:33)(cid:0)(cid:76)(cid:69)(cid:83)(cid:83)(cid:69)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:73)(cid:78)(cid:67)(cid:79)(cid:82)(cid:82)(cid:69)(cid:67)(cid:84)(cid:76)(cid:89)(cid:0)(cid:82)(cid:69)(cid:80)(cid:79)(cid:82)(cid:84)(cid:0)(cid:82)(cid:79)(cid:89)(cid:65)(cid:76)(cid:84)(cid:89)(cid:0)(cid:82)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:83)(cid:12)(cid:0)(cid:87)(cid:72)(cid:73)(cid:67)(cid:72)(cid:0)(cid:77)(cid:73)(cid:71)(cid:72)(cid:84)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:66)(cid:69)(cid:0)(cid:73)(cid:68)(cid:69)(cid:78)(cid:84)(cid:73)(cid:70)(cid:73)(cid:69)(cid:68)(cid:0)(cid:66)(cid:89)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:76)(cid:69)(cid:83)(cid:83)(cid:69)(cid:69)(cid:0)(cid:65)(cid:85)(cid:68)(cid:73)(cid:84)(cid:0)(cid:80)(cid:82)(cid:79)(cid:67)(cid:69)(cid:83)(cid:83)(cid:0)(cid:79)(cid:82)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:77)(cid:73)(cid:78)(cid:69)(cid:0)(cid:73)(cid:78)(cid:83)(cid:80)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)
(cid:80)(cid:82)(cid:79)(cid:67)(cid:69)(cid:83)(cid:83)(cid:0)(cid:79)(cid:82)(cid:12)(cid:0)(cid:73)(cid:70)(cid:0)(cid:73)(cid:68)(cid:69)(cid:78)(cid:84)(cid:73)(cid:70)(cid:73)(cid:69)(cid:68)(cid:12)(cid:0)(cid:77)(cid:73)(cid:71)(cid:72)(cid:84)(cid:0)(cid:66)(cid:69)(cid:0)(cid:73)(cid:68)(cid:69)(cid:78)(cid:84)(cid:73)(cid:70)(cid:73)(cid:69)(cid:68)(cid:0)(cid:73)(cid:78)(cid:0)(cid:65)(cid:0)(cid:83)(cid:85)(cid:66)(cid:83)(cid:69)(cid:81)(cid:85)(cid:69)(cid:78)(cid:84)(cid:0)(cid:80)(cid:69)(cid:82)(cid:73)(cid:79)(cid:68)(cid:14)

We depend on our lessees to correctly report production and royalty revenues on a monthly basis. Our regular lessee audits 
and mine inspections may not discover any irregularities in these reports or, if we do discover errors, we might not identify them 
in the reporting period in which they occurred. Any undiscovered reporting errors could result in a loss of royalty revenues and 
errors identified in subsequent periods could lead to accounting disputes as well as disputes with our lessees.

Risks Related to Our Structure 

(cid:53)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:66)(cid:69)(cid:0)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:82)(cid:69)(cid:77)(cid:79)(cid:86)(cid:69)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:69)(cid:86)(cid:69)(cid:78)(cid:0)(cid:73)(cid:70)(cid:0)(cid:84)(cid:72)(cid:69)(cid:89)(cid:0)(cid:87)(cid:73)(cid:83)(cid:72)(cid:0)(cid:84)(cid:79)(cid:0)(cid:68)(cid:79)(cid:0)(cid:83)(cid:79)(cid:14)

Our general partner manages and operates NRP. Unlike the holders of common stock in a corporation, unitholders have only 
limited voting rights on matters affecting our business. Unitholders have no right to elect the general partner or the directors of 
the general partner on an annual or any other basis.

Furthermore, if unitholders are dissatisfied with the performance of our general partner, they currently have little practical 
ability to remove our general partner or otherwise change its management. Our general partner may not be removed except upon 
the vote of the holders of at least 66 2/3% of our outstanding units (including units held by our general partner and its affiliates). 
Because  the  owners  of  our  general  partner,  along  with  directors  and  executive  officers  and  their  affiliates,  own  a  significant 
percentage of our outstanding common units, the removal of our general partner would be difficult without the consent of both 
our general partner and its affiliates.

In addition, the following provisions of our partnership agreement may discourage a person or group from attempting to 

remove our general partner or otherwise change our management:

• 

• 

generally, if a person acquires 20% or more of any class of units then outstanding other than from our general partner or 
its affiliates, the units owned by such person cannot be voted on any matter; and

our partnership agreement contains limitations upon the ability of unitholders to call meetings or to acquire information 
about our operations, as well as other limitations upon the unitholders’ ability to influence the manner or direction of 
management.

As a result of these provisions, the price at which the common units will trade may be lower because of the absence or 

reduction of a takeover premium in the trading price.

(cid:55)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:73)(cid:83)(cid:83)(cid:85)(cid:69)(cid:0)(cid:65)(cid:68)(cid:68)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)(cid:65)(cid:76)(cid:0)(cid:67)(cid:79)(cid:77)(cid:77)(cid:79)(cid:78)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:83)(cid:0)(cid:87)(cid:73)(cid:84)(cid:72)(cid:79)(cid:85)(cid:84)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:0)(cid:65)(cid:80)(cid:80)(cid:82)(cid:79)(cid:86)(cid:65)(cid:76)(cid:12)(cid:0)(cid:87)(cid:72)(cid:73)(cid:67)(cid:72)(cid:0)(cid:87)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:68)(cid:73)(cid:76)(cid:85)(cid:84)(cid:69)(cid:0)(cid:65)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:7)(cid:83)(cid:0)(cid:69)(cid:88)(cid:73)(cid:83)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:79)(cid:87)(cid:78)(cid:69)(cid:82)(cid:83)(cid:72)(cid:73)(cid:80)(cid:0)
(cid:73)(cid:78)(cid:84)(cid:69)(cid:82)(cid:69)(cid:83)(cid:84)(cid:83)(cid:14)

Our general partner may cause us to issue an unlimited number of common units, without unitholder approval (subject to 
applicable New York Stock Exchange (NYSE) rules). We may also issue at any time an unlimited number of equity securities 

35

ranking junior or senior to the common units without unitholder approval (subject to applicable NYSE rules). The issuance of 
additional common units or other equity securities of equal or senior rank will have the following effects:

• 

• 

• 

an existing unitholder’s proportionate ownership interest in NRP will decrease;

the amount of cash available for distribution on each unit may decrease;

the relative voting strength of each previously outstanding unit may be diminished; and the market price of the common 
units may decline.

(cid:47)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:72)(cid:65)(cid:83)(cid:0)(cid:65)(cid:0)(cid:76)(cid:73)(cid:77)(cid:73)(cid:84)(cid:69)(cid:68)(cid:0)(cid:67)(cid:65)(cid:76)(cid:76)(cid:0)(cid:82)(cid:73)(cid:71)(cid:72)(cid:84)(cid:0)(cid:84)(cid:72)(cid:65)(cid:84)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:82)(cid:69)(cid:81)(cid:85)(cid:73)(cid:82)(cid:69)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:84)(cid:79)(cid:0)(cid:83)(cid:69)(cid:76)(cid:76)(cid:0)(cid:84)(cid:72)(cid:69)(cid:73)(cid:82)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:83)(cid:0)(cid:65)(cid:84)(cid:0)(cid:65)(cid:78)(cid:0)(cid:85)(cid:78)(cid:68)(cid:69)(cid:83)(cid:73)(cid:82)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:84)(cid:73)(cid:77)(cid:69)(cid:0)(cid:79)(cid:82)(cid:0)(cid:80)(cid:82)(cid:73)(cid:67)(cid:69)(cid:14)

If at any time our general partner and its affiliates own 80% or more of the common units, the general partner will have the 
right, but not the obligation, which it may assign to any of its affiliates, to acquire all, but not less than all, of the remaining common 
units held by unaffiliated persons at a price generally equal to the then current market price of the common units. As a result, 
unitholders may be required to sell their common units at a time when they may not desire to sell them or at a price that is less 
than the price they would like to receive. They may also incur a tax liability upon a sale of their common units.

(cid:35)(cid:79)(cid:83)(cid:84)(cid:0)(cid:82)(cid:69)(cid:73)(cid:77)(cid:66)(cid:85)(cid:82)(cid:83)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)(cid:0)(cid:68)(cid:85)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:66)(cid:69)(cid:0)(cid:83)(cid:85)(cid:66)(cid:83)(cid:84)(cid:65)(cid:78)(cid:84)(cid:73)(cid:65)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:87)(cid:73)(cid:76)(cid:76)(cid:0)(cid:82)(cid:69)(cid:68)(cid:85)(cid:67)(cid:69)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:67)(cid:65)(cid:83)(cid:72)(cid:0)(cid:65)(cid:86)(cid:65)(cid:73)(cid:76)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:68)(cid:73)(cid:83)(cid:84)(cid:82)(cid:73)(cid:66)(cid:85)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:84)(cid:79)(cid:0)
(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:14)

Prior to making any distribution on the common units, we reimburse our general partner and its affiliates, including officers 
and directors of the general partner, for all expenses incurred on our behalf. The reimbursement of expenses and the payment of 
fees could adversely affect our ability to make distributions. The general partner has sole discretion to determine the amount of 
these expenses. In addition, our general partner and its affiliates may provide us services for which we will be charged reasonable 
fees as determined by the general partner.

(cid:53)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:72)(cid:65)(cid:86)(cid:69)(cid:0)(cid:76)(cid:73)(cid:77)(cid:73)(cid:84)(cid:69)(cid:68)(cid:0)(cid:76)(cid:73)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:73)(cid:70)(cid:0)(cid:65)(cid:0)(cid:67)(cid:79)(cid:85)(cid:82)(cid:84)(cid:0)(cid:70)(cid:73)(cid:78)(cid:68)(cid:83)(cid:0)(cid:84)(cid:72)(cid:65)(cid:84)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:0)(cid:65)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:67)(cid:79)(cid:78)(cid:83)(cid:84)(cid:73)(cid:84)(cid:85)(cid:84)(cid:69)(cid:0)(cid:67)(cid:79)(cid:78)(cid:84)(cid:82)(cid:79)(cid:76)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:66)(cid:85)(cid:83)(cid:73)(cid:78)(cid:69)(cid:83)(cid:83)(cid:14)

Our general partner generally has unlimited liability for our obligations, such as our debts and environmental liabilities, 
except for those contractual obligations that are expressly made without recourse to our general partner. Under Delaware law, 
however, a unitholder could be held liable for our obligations to the same extent as a general partner if a court determined that the 
right of unitholders to remove our general partner or to take other action under our partnership agreement constituted participation 
in the "control" of our business. In addition, Section 17-607 of the Delaware Revised Uniform Limited Partnership Act provides 
that under some circumstances, a unitholder may be liable to us for the amount of a distribution for a period of three years from 
the date of the distribution.

(cid:35)(cid:79)(cid:78)(cid:70)(cid:76)(cid:73)(cid:67)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:73)(cid:78)(cid:84)(cid:69)(cid:82)(cid:69)(cid:83)(cid:84)(cid:0)(cid:67)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:65)(cid:82)(cid:73)(cid:83)(cid:69)(cid:0)(cid:65)(cid:77)(cid:79)(cid:78)(cid:71)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:85)(cid:83)(cid:0)(cid:79)(cid:82)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:14)

These conflicts may include the following:

•  Excluding our VantaCore business, we do not have any employees and we rely solely on employees of affiliates of the 

general partner;

• 

• 

• 

• 

under  our  partnership  agreement,  we  reimburse  the  general  partner  for  the  costs  of  managing  and  for  operating  the 
partnership;

the  amount  of  cash  expenditures,  borrowings  and  reserves  in  any  quarter  may  affect  cash  available  to  pay  quarterly 
distributions to unitholders;

the general partner tries to avoid being liable for partnership obligations. The general partner is permitted to protect its 
assets in this manner by our partnership agreement. Under our partnership agreement the general partner would not breach 
its fiduciary duty by avoiding liability for partnership obligations even if we can obtain more favorable terms without 
limiting the general partner’s liability;

under our partnership agreement, the general partner may pay its affiliates for any services rendered on terms fair and 
reasonable to us. The general partner may also enter into additional contracts with any of its affiliates on behalf of us. 
Agreements or contracts between us and our general partner (and its affiliates) are not necessarily the result of arm’s-length 
negotiations; and

36

• 

the general partner would not breach our partnership agreement by exercising its call rights to purchase limited partnership 
interests or by assigning its call rights to one of its affiliates or to us.

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Our general partner may transfer its general partner interest to a third party in a merger or in a sale of all or substantially all 
of its assets without the consent of our unitholders. Furthermore, there is no restriction in our partnership agreement on the ability 
of the general partner of our general partner from transferring its general partnership interest in our general partner to a third party. 
The new owner of our general partner would then be in a position to replace the Board of Directors and officers with its own 
choices and to control their decisions and actions.

In  addition,  a  change  of  control  would  constitute  an  event  of  default  under  our  revolving  credit  agreement.  During  the 
continuance of an event of default under our revolving credit agreement, the administrative agent may terminate any outstanding 
commitments of the lenders to extend credit to us and/or declare all amounts payable by us immediately due and payable. A change 
of control also may trigger payment obligations under various compensation arrangements with our officers.

Tax Risks to Common Unitholders

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(cid:79)(cid:85)(cid:82)(cid:0)(cid:67)(cid:65)(cid:83)(cid:72)(cid:0)(cid:65)(cid:86)(cid:65)(cid:73)(cid:76)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:68)(cid:73)(cid:83)(cid:84)(cid:82)(cid:73)(cid:66)(cid:85)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:84)(cid:79)(cid:0)(cid:89)(cid:79)(cid:85)(cid:0)(cid:87)(cid:79)(cid:85)(cid:76)(cid:68)(cid:0)(cid:66)(cid:69)(cid:0)(cid:83)(cid:85)(cid:66)(cid:83)(cid:84)(cid:65)(cid:78)(cid:84)(cid:73)(cid:65)(cid:76)(cid:76)(cid:89)(cid:0)(cid:82)(cid:69)(cid:68)(cid:85)(cid:67)(cid:69)(cid:68)(cid:14)

The anticipated after-tax economic benefit of an investment in our common units depends largely on our being treated as a 
partnership for U.S. federal income tax purposes. Despite the fact that we are organized as a limited partnership under Delaware 
law, we would be treated as a corporation for U.S. federal income tax purposes unless we satisfy a "qualifying income" requirement. 
Based on our current operations, we believe we satisfy the qualifying income requirement. However, we have not requested, and 
do not plan to request, a ruling from the IRS on this or any other matter affecting us. Failing to meet the qualifying income 
requirement or a change in current law could cause us to be treated as a corporation for U.S. federal income tax purposes or 
otherwise subject us to taxation as an entity.

If we were treated as a corporation for U.S. federal income tax purposes, we would pay federal income tax on our taxable 
income at the corporate tax rate, which is currently a maximum of 35% and would likely be liable for state income tax at varying 
rates. Distributions to you would generally be taxed again as corporate distributions, and no income, gains, losses, deductions or 
credits would flow through to you. Because tax would be imposed upon us as a corporation, our cash available for distribution to 
you would be substantially reduced. Therefore, treatment of us as a corporation would result in a material reduction in the anticipated 
cash flow and after-tax return to our common unitholders, likely causing a substantial reduction in the value of our common units.

At  the  state  level,  several  states  have  been  evaluating  ways  to  subject  partnerships  to  entity-level  taxation  through  the 
imposition of state income, franchise and other forms of taxation. Imposition of a similar tax on us in a jurisdiction in which we 
operate or in other jurisdictions to which we may expand could substantially reduce the cash available for distribution to you.

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(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:80)(cid:79)(cid:82)(cid:84)(cid:70)(cid:79)(cid:76)(cid:73)(cid:79)(cid:0)(cid:73)(cid:78)(cid:67)(cid:79)(cid:77)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:66)(cid:69)(cid:0)(cid:84)(cid:65)(cid:88)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:89)(cid:79)(cid:85)(cid:0)(cid:69)(cid:86)(cid:69)(cid:78)(cid:0)(cid:84)(cid:72)(cid:79)(cid:85)(cid:71)(cid:72)(cid:0)(cid:89)(cid:79)(cid:85)(cid:0)(cid:82)(cid:69)(cid:67)(cid:69)(cid:73)(cid:86)(cid:69)(cid:0)(cid:79)(cid:84)(cid:72)(cid:69)(cid:82)(cid:0)(cid:76)(cid:79)(cid:83)(cid:83)(cid:69)(cid:83)(cid:0)(cid:70)(cid:82)(cid:79)(cid:77)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:65)(cid:67)(cid:84)(cid:73)(cid:86)(cid:73)(cid:84)(cid:73)(cid:69)(cid:83)(cid:14)

Because our unitholders are treated as partners to whom we allocate taxable income that could be different in amount than 
the cash we distribute, you are required to pay any federal income taxes and, in some cases, state and local income taxes on your 
share of our taxable income even if you receive no cash distributions from us. You may not receive cash distributions from us 
equal to your share of our taxable income or even equal to the actual tax due from you with respect to that income.

For unitholders subject to the passive loss rules, our current operations include portfolio activities (such as our coal and 
mineral royalties business) and passive activities (such as our soda ash, aggregates and oil and gas working interests businesses).  
Any passive losses we generate will only be available to offset our passive income generated in the future and will not be available 
to offset (i) our portfolio income, including income related to our coal and mineral royalties business, (ii) a unitholder’s income 

37

from other passive activities or investments, including investments in other publicly traded partnerships, or (iii) a unitholder’s 
salary or active business income.  Thus, your share of our portfolio income may be subject to federal income tax, regardless of 
other losses you may receive from us.

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In response to current market conditions, we anticipate engaging in transactions to reduce our leverage and manage our liquidity 
that would result in income and gain to our unitholders without a corresponding cash distribution. For example, we may sell assets 
and use the proceeds to repay existing debt, in which case, you could be allocated taxable income and gain resulting from the sale 
without receiving a cash distribution. Further, we may pursue opportunities to reduce our existing debt, such as debt exchanges, 
debt repurchases, or modifications of our existing debt that would result in "cancellation of indebtedness income" (also referred 
to as "COD income") being allocated to our unitholders as ordinary taxable income. Unitholders may be allocated income and 
gain from these transactions, and income tax liabilities arising therefrom may exceed any distributions we make to you. The ultimate 
tax effect of any such income allocations will depend on the unitholder's individual tax position, including, for example, the 
availability of any suspended passive losses that may offset some portion of the allocable income. Unitholders may, however, be 
allocated substantial amounts of ordinary income subject to taxation, without any ability to offset such allocated income against 
any capital losses attributable to the unitholder’s ultimate disposition of its units. Unitholders are encouraged to consult their tax 
advisors with respect to the consequences to them.

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The present U.S. federal income tax treatment of publicly traded partnerships, including us, or an investment in our common 
units may be modified by administrative, legislative or judicial changes or differing interpretations at any time. For example, from 
time to time, members of Congress propose and consider substantive changes to the existing federal income tax laws that affect 
publicly traded partnerships. One such legislative proposal would have eliminated the qualifying income exception to the treatment 
of all publicly traded partnerships as corporations upon which we rely for our treatment as a partnership for U.S. federal income 
tax purposes. We are unable to predict whether any of these changes or other proposals will be reintroduced or will ultimately be 
enacted. Any such changes could negatively impact the value of an investment in our common units. Any modification to U.S. 
federal income tax laws may be applied retroactively and could make it more difficult or impossible for us to meet the exception 
for certain publicly traded partnerships to be treated as a partnership for U.S. federal income tax purposes.

In addition, the Internal Revenue Service, on May 5, 2015, issued proposed regulations concerning which activities give rise 
to qualifying income within the meaning of Section 7704 of the Internal Revenue Code. The proposed regulations provide an 
exclusive list of industry-specific rules regarding the qualifying income exception, including whether an activity constitutes the 
exploration, development, production and marketing of natural resources. Income earned from a royalty interest is not specifically 
enumerated as a qualifying income activity in the proposed regulations. However, notwithstanding the proposed regulations, our 
counsel has advised us that royalty income is qualifying income for purposes of Section 7704 of the Internal Revenue Code since 
it is "derived" from the exploration, development, production and marketing of natural resources. The U.S. Treasury Department 
and the IRS may clarify that royalty income is qualifying income for purposes of Section 7704 of the Internal Revenue Code; 
however, there are no assurances that the proposed regulations, when published as final regulations, will not take a position that 
is contrary to our interpretation of Section 7704 of the Internal Revenue Code. Finalized regulations could modify the amount of 
our gross income that we are able to treat as qualifying income for the purposes of the qualifying income requirement.

38

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We have not requested a ruling from the IRS with respect to our treatment as a partnership for federal income tax purposes 
or any other matter affecting us. The IRS may adopt positions that differ from the positions we take. It may be necessary to resort 
to administrative or court proceedings to sustain some or all of the positions we take. A court may not agree with some or all of 
the positions we take. Any contest by the IRS may materially and adversely impact the market for our common units and the price 
at which they trade. In addition, our costs of any contest by the IRS will be borne indirectly by our unitholders and our general 
partner because the costs will reduce our cash available for distribution.

Recently enacted legislation applicable to us for taxable years beginning after December 31, 2017 alters the procedures for 
auditing large partnerships and also alters the procedures for assessing and collecting taxes due (including applicable penalties 
and interest) as a result of an audit. Unless we are eligible to (and choose to) elect to issue revised Schedules K-1 to our partners 
with respect to an audited and adjusted return, the IRS may assess and collect taxes (including any applicable penalties and interest) 
directly from us in the year in which the audit is completed under the new rules. If we are required to pay taxes, penalties and 
interest as the result of audit adjustments, cash available for distribution to our unitholders may be substantially reduced. In addition, 
because payment would be due for the taxable year in which the audit is completed, unitholders during that taxable year would 
bear the expense of the adjustment even if they were not unitholders during the audited taxable year.

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If you sell your common units, you will recognize a gain or loss equal to the difference between the amount realized and 
your tax basis in those common units. Because distributions in excess of your allocable share of our net taxable income result in 
a decrease in your tax basis in your common units, the amount, if any, of such prior excess distributions with respect to the common
units you sell will, in effect, become taxable income to you if you sell such common units at a price greater than your tax basis in
those common units, even if the price you receive is less than your original cost. Furthermore, a substantial portion of the amount 
realized, whether or not representing gain, may be taxed as ordinary income due to potential recapture items, including depletion 
and depreciation recapture. In addition, because the amount realized includes a unitholder’s share of our nonrecourse liabilities, 
if you sell your common units, you may incur a tax liability in excess of the amount of cash you receive from the sale.

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Investments in common units by tax-exempt entities, such as employee benefit plans and individual retirement accounts 
(known  as  IRAs),  and  non-U.S.  persons  raise  issues  unique  to  them.  For  example,  virtually  all  of  our  income  allocated  to 
organizations that are exempt from federal income tax, including IRAs and other retirement plans, will be unrelated business 
taxable income and will be taxable to them. Allocations and/or distributions to non-U.S. persons will be reduced by withholding 
taxes imposed at the highest applicable effective tax rate applicable to non-U.S. persons, and non-U.S. persons will be required 
to file U.S. federal income tax returns and pay tax on their share of our taxable income. If you are a tax exempt entity or a non-
U.S. person, you should consult your tax advisor before investing in our common units.

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Because we cannot match transferors and transferees of our common units and for other reasons, we have adopted depreciation 
and amortization positions that may not conform to all aspects of existing Treasury Regulations. A successful IRS challenge to 
those positions could adversely affect the amount of tax benefits available to you. It also could affect the timing of these tax benefits 
or the amount of gain from your sale of common units and could have a negative impact on the value of our common units or 
result in audit adjustments to your tax returns.

39

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We generally prorate our items of income, gain, loss and deduction between transferors and transferees of our common units 
each month based upon the ownership of our common units on the first day of each month, instead of on the basis of the date a 
particular unit is transferred. The U.S. Department of the Treasury recently adopted final Treasury Regulations allowing a similar 
monthly  simplifying  convention  for  taxable  years  beginning  on  or  after August  3,  2015.  However,  such  regulations  do  not 
specifically authorize the use of the proration method we have adopted for prior taxable years and may not specifically authorize 
all aspects of our proration method thereafter. If the IRS were to challenge our proration method, we may be required to change 
the allocation of items of income, gain, loss and deduction among our unitholders.

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Because there are no specific rules governing the U.S. federal income tax consequences of loaning a partnership interest, a 
unitholder whose common units are the subject of a securities loan may be considered as having disposed of the loaned common 
units. In that case, the unitholder may no longer be treated for tax purposes as a partner with respect to those common units during 
the period of the loan and the unitholder may recognize gain or loss from such disposition. Moreover, during the period of the 
loan, any of our income, gain, loss or deduction with respect to those common units may not be reportable by the unitholder and 
any cash distributions received by the unitholder as to those common units could be fully taxable as ordinary income. Unitholders 
desiring to assure their status as partners and avoid the risk of gain recognition from a loan of their common units are urged to 
modify any applicable brokerage account agreements to prohibit their brokers from borrowing their common units.

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(cid:84)(cid:69)(cid:82)(cid:77)(cid:73)(cid:78)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:79)(cid:70)(cid:0)(cid:85)(cid:83)(cid:0)(cid:65)(cid:83)(cid:0)(cid:65)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:83)(cid:72)(cid:73)(cid:80)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:70)(cid:69)(cid:68)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:73)(cid:78)(cid:67)(cid:79)(cid:77)(cid:69)(cid:0)(cid:84)(cid:65)(cid:88)(cid:0)(cid:80)(cid:85)(cid:82)(cid:80)(cid:79)(cid:83)(cid:69)(cid:83)(cid:14)

We will be considered to have terminated as a partnership for federal income tax purposes if there is a sale or exchange of 
50% or more of the total interests in our capital and profits within a twelve-month period. For purposes of determining whether 
the 50% threshold has been met, multiple sales of the same interest will be counted only once. Our termination would, among 
other things, result in the closing of our taxable year for all unitholders, which would result in our filing two tax returns for one 
calendar year and could result in a significant deferral of depreciation deductions allowable in computing our taxable income. In 
the case of a unitholder reporting on a taxable year other than the calendar year, the closing of our taxable year may also result in 
more than twelve months of our taxable income or loss being includable in taxable income for the unitholder’s taxable year that 
includes our termination. Our termination currently would not affect our classification as a partnership for federal income tax 
purposes, but it would result in our being treated as a new partnership for U.S. federal income tax purposes following the termination. 
If we were treated as a new partnership, we would be required to make new tax elections and could be subject to penalties if we 
were unable to determine that a termination occurred. The IRS has announced a relief procedure whereby if a publicly traded 
partnership that has technically terminated requests and the IRS grants special relief, among other things, the partnership may be 
permitted to provide only a single Schedule K-1 to unitholders for the two short tax periods included in the year in which the 
termination occurs.

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(cid:65)(cid:83)(cid:0)(cid:65)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:70)(cid:85)(cid:84)(cid:85)(cid:82)(cid:69)(cid:0)(cid:76)(cid:69)(cid:71)(cid:73)(cid:83)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:14)

Changes to U.S. federal income tax laws have been proposed in a prior session of Congress that would eliminate certain key 
U.S. federal income tax preferences relating to coal exploration and development. These changes include, but are not limited to 
(i) repealing capital gains treatment of coal and lignite royalties, (ii) eliminating current deductions and 60-month amortization 
for exploration and development costs relating to coal and other hard mineral fossil fuels, (iii) repealing the percentage depletion 
allowance with respect to coal properties, and (iv) excluding from the definition of domestic production gross receipts all gross 
receipts derived from the sale, exchange, or other disposition of coal, other hard mineral fossil fuels, or primary products thereof. 
If enacted, these changes would limit or eliminate certain tax deductions that are currently available with respect to coal exploration 

40

and development, and any such change could increase the taxable income allocable to our unitholders and negatively impact the 
value of an investment in our common units.

(cid:33)(cid:83)(cid:0)(cid:65)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:73)(cid:78)(cid:86)(cid:69)(cid:83)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:73)(cid:78)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:67)(cid:79)(cid:77)(cid:77)(cid:79)(cid:78)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:83)(cid:12)(cid:0)(cid:89)(cid:79)(cid:85)(cid:0)(cid:65)(cid:82)(cid:69)(cid:0)(cid:83)(cid:85)(cid:66)(cid:74)(cid:69)(cid:67)(cid:84)(cid:0)(cid:84)(cid:79)(cid:0)(cid:83)(cid:84)(cid:65)(cid:84)(cid:69)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:76)(cid:79)(cid:67)(cid:65)(cid:76)(cid:0)(cid:84)(cid:65)(cid:88)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:82)(cid:69)(cid:84)(cid:85)(cid:82)(cid:78)(cid:0)(cid:70)(cid:73)(cid:76)(cid:73)(cid:78)(cid:71)(cid:0)(cid:82)(cid:69)(cid:81)(cid:85)(cid:73)(cid:82)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)(cid:0)(cid:73)(cid:78)(cid:0)(cid:74)(cid:85)(cid:82)(cid:73)(cid:83)(cid:68)(cid:73)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)
(cid:87)(cid:72)(cid:69)(cid:82)(cid:69)(cid:0)(cid:87)(cid:69)(cid:0)(cid:79)(cid:80)(cid:69)(cid:82)(cid:65)(cid:84)(cid:69)(cid:0)(cid:79)(cid:82)(cid:0)(cid:79)(cid:87)(cid:78)(cid:0)(cid:79)(cid:82)(cid:0)(cid:65)(cid:67)(cid:81)(cid:85)(cid:73)(cid:82)(cid:69)(cid:0)(cid:80)(cid:82)(cid:79)(cid:80)(cid:69)(cid:82)(cid:84)(cid:89)(cid:14)

In addition to federal income taxes, you are likely subject to other taxes, including state and local taxes, unincorporated 
business taxes and estate, inheritance or intangible taxes that are imposed by the various jurisdictions in which we conduct business 
or own property now or in the future, even if you do not live in any of those jurisdictions. You are likely required to file state and 
local income tax returns and pay state and local income taxes in some or all of these various jurisdictions. Further, you may be 
subject to penalties for failure to comply with those requirements. We own property and conduct business in a number of states 
in  the  United  States.  Most  of  these  states  impose  an  income  tax  on  individuals,  corporations  and  other  entities. As  we  make 
acquisitions or expand our business, we may own assets or conduct business in additional states that impose a personal income 
tax. It is your responsibility to file all U.S. federal, state and local tax returns.

ITEM 1B.  UNRESOLVED STAFF COMMENTS

None.

ITEM 3.  LEGAL PROCEEDINGS

We are involved, from time to time, in various legal proceedings arising in the ordinary course of business. While the ultimate 
results of these proceedings cannot be predicted with certainty, we believe these claims will not have a material effect on our 
financial position, liquidity or operations.

On November 24, 2015, we filed a lawsuit against Foresight Energy’s subsidiary, Hillsboro Energy LLC ("Hillsboro"), in 
the Circuit Court of the Fourth Judicial Circuit in Montgomery County, Illinois. The lawsuit alleges, among other items, breach 
of contract by Hillsboro resulting from a wrongful declaration of force majeure at Hillsboro’s Deer Run mine in July 2015. In late 
March 2015, elevated carbon monoxide readings were detected at the Deer Run mine, and coal production at the mine was idled. 
In July 2015, we received the notice declaring a force majeure event at the mine as a result of the elevated carbon monoxide levels. 
The effect of a valid force majeure declaration would relieve Foresight Energy of its obligation to pay us minimum deficiency 
payments of $7.5 million per quarter, or $30.0 million per year. Foresight Energy's failure to make the deficiency payment with 
respect to the second, third and fourth quarters of 2015 resulted in a $16.2 million cash impact to us. Such amount will increase 
for each quarter during which mining operations continue to be idled. We do not currently have an estimate as to when the mine 
will resume coal production. If the mine remains idled for an extended period or if the mine is permanently closed, our financial 
condition could be adversely affected.

For  more  information  regarding  certain  other  legal  proceedings  involving  NRP,  see  "Note  14.  Commitments  and 
Contingencies" included in the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary 
Data" included elsewhere in this Annual Report on Form 10-K. 

ITEM 4.  MINE SAFETY DISCLOSURES

The information concerning mine safety violations or other regulatory matters required by SEC regulations is included in 

Exhibit 95.1 to this Annual Report on Form 10-K.

41

 
PART II

ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED UNITHOLDER MATTERS AND ISUER 
PURCHASES OF EQUITY SECURITIES

NRP Common Units and Cash Distributions

Our  common  units  are  listed  and  traded  on  the  NYSE  under  the  symbol  "NRP". As  of  February  1,  2016,  there  were 
approximately 34,100 beneficial and registered holders of our common units. The computation of the approximate number of 
unitholders is based upon a broker survey.

The following table sets forth the high and low sales prices per common unit, as reported on the NYSE Composite Transaction 
Tape from January 1, 2014 to December 31, 2015, and the quarterly cash distribution declared and paid with respect to each quarter 
per common unit. The information presented in the tables below have been adjusted to give retroactive effect to the one-for-ten 
reverse unit split that was effective on February 17, 2016.

2014
First Quarter
Second Quarter
Third Quarter
Fourth Quarter
2015
First Quarter
Second Quarter
Third Quarter
Fourth Quarter

2014 Distributions
2015 Distributions

Price Range

High

Low

Cash Distribution History
Record
Date

Payment
Date

Per
Unit

$
$
$
$

$
$
$
$

207.20
165.70
169.10
138.30

98.10
74.50
38.00
29.90

$
$
$
$

$
$
$
$

148.00
127.80
125.60
79.70

63.80
36.10
22.10
10.00

$
$
$
$

$
$
$
$

3.50
3.50
3.50
3.50

0.90
0.90
0.45
0.45

5/5/2014
8/5/2014
11/5/2014
2/5/2015

5/5/2015
8/5/2015
11/5/2015
2/5/2016

5/14/2014
8/14/2014
11/14/2014
2/13/2015

5/14/2015
8/14/2015
11/13/2015
2/12/2016

Cash Distributions to Partners

 General
Partner (1)

Limited
Partners (2)

(in thousands)

Total
Distributions

$
$

3,241
1,434

$
$

158,801
70,324

$
$

162,042
71,758  

(1)  Represents distributions on our general partner’s 2% general partner interest in us.

(2)  Includes distributions on 156,000 common units held by our general partner.

42

 
 
 
 
 
ITEM 6.  SELECTED FINANCIAL DATA

The following table shows selected historical financial data for Natural Resource Partners L.P. for the periods and as of the 
dates indicated. We derived the information in the following tables from, and the information should be read together with and is 
qualified in its entirety by reference to, the historical financial statements and the accompanying notes included in "Item 8. Financial 
Statements and Supplementary Data" in this and previously filed Annual Reports on Form 10-K. These tables should be read 
together with "Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations." The information 
presented below gives pro forma effect to the one-for-ten reverse unit split that was effective on February 17, 2016.

$
Total revenues and other income
$
Asset impairments
$
Income (loss) from operations
Net income (loss)
$
Net income excluding impairments (1) $
Basic and diluted net income (loss)
per limited partner unit
Distributions paid ($ per unit)
Weighted average number of common
units outstanding
Cash from operations
Distributable Cash Flow(1)
Adjusted EBITDA (1)
(cid:37)(cid:68)(cid:79)(cid:68)(cid:81)(cid:70)(cid:72)(cid:3)(cid:86)(cid:75)(cid:72)(cid:72)(cid:87)(cid:3)(cid:71)(cid:68)(cid:87)(cid:68):
Cash and cash equivalents
Total assets
Long-term debt
Partners’ capital

$
$
$

$
$

$
$

$

For the Years Ended December 31,

2015

2014

2013

2012

2011

(in thousands, except per unit data)

$
488,849
681,594
$
(477,911) $
(571,720) $
$
109,874

(45.75) $
$
2.70

12,230
203,424
196,981
292,116

51,773
1,684,075
1,304,013
72,942

$
$
$

$
$
$
$

399,752
26,209
188,919
108,830
135,039

9.42
14.00

11,326
210,755
208,366
294,632

50,076
2,444,724
1,394,240
720,155

$
$
$
$
$

$
$

$
$
$

$
$
$
$

358,117
734
236,236
172,078
172,812

15.39
22.00

10,958
247,074
306,873
332,196

92,513
1,991,856
1,084,226
616,789

$
$
$
$
$

$
$

$
$
$

$
$
$
$

379,147
2,568
267,165
213,355
215,923

19.70
22.00

10,603
271,408
296,106
328,116

149,424
1,764,672
897,039
617,447

$
$
$
$
$

$
$

$
$
$

$
$
$
$

377,683
161,336
104,135
54,026
215,362

5.00
21.70

10,603
305,574
311,122
326,670

214,922
1,665,649
836,268
644,915

(1)  See "—Non-GAAP Financial Measures" below.

Non-GAAP Financial Measures

(cid:36)(cid:73)(cid:83)(cid:84)(cid:82)(cid:73)(cid:66)(cid:85)(cid:84)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:35)(cid:65)(cid:83)(cid:72)(cid:0)(cid:38)(cid:76)(cid:79)(cid:87)

Our Distributable Cash Flow represents net cash provided by operating activities, plus returns of unconsolidated equity 
investments,  proceeds  from  sales  of  assets,  and  returns  of  long-term  contract  receivables—affiliate,  less  maintenance  capital 
expenditures and distributions to non-controlling interest. Although Distributable Cash Flow is a non-GAAP financial measure, 
we believe it is a useful adjunct to net cash provided by operating activities under GAAP. Distributable Cash Flow is not a measure 
of financial performance under GAAP and should not be considered as an alternative to cash flows from operating, investing or 
financing activities. Distributable Cash Flow may not be calculated the same for us as for other companies. The following table 
(in thousands) reconciles net cash provided by operating activities (the most comparable GAAP financial measure) to Distributable 
Cash Flow for the years ended December 31, 2015, 2014, 2013, 2012 and 2011:

43

 
 
 
Net cash provided by operating
activities

Add: proceeds from sale of plant and
equipment and other

Add: proceeds from sale of mineral
rights

Add: return of long-term contract
receivables—affiliate

Add: return of unconsolidated equity
investment

Less: maintenance capital
expenditures (1)

2015

2014

2013

2012

2011

Year Ended December 31,

$

203,424

$

210,755

$

247,074

$

271,408

$

305,574

11,024

7,096

2,463

—

1,006

412

1,904

3,633

—

10,929

2,558

48,833

(24,282)

(8,370)

—

11,277

13,545

2,669

—

—

3,870

1,730

—

—

—

Less: distributions to non-controlling
interest

(2,744)

Distributable Cash Flow

$

196,981

$

(974)
208,366

$

(2,521)
306,873

$

(2,793)
296,106

$

(52)
311,122

(1)  Maintenance capital expenditures primarily consist of costs to maintain the long-term productive capacity of our oil and 

gas non-operating working interest business and VantaCore.

(cid:33)(cid:68)(cid:74)(cid:85)(cid:83)(cid:84)(cid:69)(cid:68)(cid:0)(cid:37)(cid:34)(cid:41)(cid:52)(cid:36)(cid:33)

Adjusted  EBITDA  is  a  non-GAAP  financial  measure  that  we  define  as  net  income  (loss)  less  equity  earnings  from 
unconsolidated investment, gain on reserve swaps and income to non-controlling interest; plus distributions from equity earnings  
in unconsolidated investment, interest expense, depreciation, depletion and amortization and asset impairments. Adjusted EBITDA, 
as used and defined by us, may not be comparable to similarly titled measures employed by other companies and is not a measure 
of performance calculated in accordance with GAAP. Adjusted EBITDA should not be considered in isolation or as a substitute 
for operating income (loss), net income (loss), cash flows provided by operating, investing and financial activities, or other income 
or cash flow statement data prepared in accordance with GAAP. Adjusted EBITDA provides no information regarding a partnership's 
capital structure, borrowings, interest costs, capital expenditures, and working capital movement or tax positions. Adjusted EBITDA 
does not represent funds available for discretionary use because those funds may be required for debt service, capital expenditures, 
working capital and other commitments and obligations. Our management team believes Adjusted EBITDA is a useful measure 
because it is widely used by financial analysts, investors and rating agencies for comparative purposes. Adjusted EBITDA is also 
a financial measure widely used by investors in the high-yield bond market. There are significant limitations to using Adjusted 
EBITDA as a measure of performance, including the inability to analyze the effect of certain recurring items that materially affect 
our  net  income  (loss),  the  lack  of  comparability  of  results  of  operations  of  different  companies  and  the  different  methods  of 
calculating Adjusted EBITDA reported by different companies. The following table (in thousands) reconciles net income (loss) 
(the most comparable GAAP financial measure) to Adjusted EBITDA for the years ended December 31, 2015, 2014, 2013, 2012 
and 2011:

Net income (loss)
Less: equity earnings from
unconsolidated investment
Less: gain on reserve swaps

Add: asset impairments

Add: depreciation, depletion and
amortization

Add: interest expense

2015
(571,720) $

$

2014

2013

2012

2011

108,830

$

172,078

$

213,355

$

54,026

Year Ended December 31,

(49,918)

(9,290)

681,594

100,828

93,827

(41,416)
(5,690)
26,209

79,876

80,185

(34,186)
(8,149)
734

64,377

64,396

—

—

2,568

58,221

53,972

—
(2,990)
161,336

65,118

49,180

Add: distributions from equity
earnings in unconsolidated investment
Adjusted EBITDA

$

46,795
292,116

$

46,638
294,632

$

72,946
332,196

$

—
328,116

$

—
326,670

44

 
 
 
 
Adjusted EBITDA presented in the table above differs from the EBITDDA definitions contained in Opco’s debt agreements. 
See Note 9. "Debt and Debt—Affiliate" included in the Notes to Consolidated Financial Statements in Item 8. "Financial Statements 
and Supplementary Data" included elsewhere in this Annual Report on Form 10-K for a description of Opco’s debt agreements.

(cid:46)(cid:69)(cid:84)(cid:0)(cid:41)(cid:78)(cid:67)(cid:79)(cid:77)(cid:69)(cid:0)(cid:37)(cid:88)(cid:67)(cid:76)(cid:85)(cid:68)(cid:73)(cid:78)(cid:71)(cid:0)(cid:41)(cid:77)(cid:80)(cid:65)(cid:73)(cid:82)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)

Net  income  excluding  impairments  is  a  non-GAAP  financial  measure  that  we  define  as  net  income  (loss)  plus  asset 
impairments. Net income excluding impairments, as used and defined by us, may not be comparable to similarly titled measures 
employed by other companies and is not a measure of performance calculated in accordance with GAAP. Net income excluding 
impairments should not be considered in isolation or as a substitute for operating income (loss), net income (loss), cash flows 
provided by operating, investing and financial activities, or other income or cash flow statement data prepared in accordance with 
GAAP. Our management team believes net income excluding impairments is useful in evaluating our financial performance because 
asset impairments are irregular non-cash charges and excluding these from net income allows us to better compare results period-
over-period.The following table (in thousands) reconciles net income (loss) (the most comparable GAAP financial measure) to 
net income excluding impairment for the years ended December 31, 2015, 2014, 2013, 2012 and 2011:

Net income (loss)
Add: asset impairments
Net income excluding impairments

$

$

2015
(571,720) $
681,594
109,874

$

2014

2013

2012

2011

108,830
26,209
135,039

$

$

172,078
734
172,812

$

$

213,355
2,568
215,923

$

$

54,026
161,336
215,362

Year Ended December 31,

45

 
 
ITEM  7.    MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINACNIAL  CONDITION  AND  RESULTS  OF 
OPERATIONS

Intr

The  following  discussion  and  analysis  presents  management’s  view  of  our  business,  financial  condition  and  overall 
performance and should be read in conjunction with our consolidated financial statements and footnotes included elsewhere in 
this filing. Our discussion and analysis consists of the following subjects:

•  Executive Overview

•  Results of Operations

•  Liquidity and Capital Resources

•  Unrestricted Subsidiary Information

•  Off-Balance Sheet Transactions

•  Inflation

•  Environmental Regulation

•  Related Party Transactions

•  Summary of Critical Accounting Estimates

•  Recent Accounting Standards

As used in this Item 7, unless the context otherwise requires: "we," "our," "us" and the "Partnership" refer to Natural Resource 
Partners L.P. and, where the context requires, our subsidiaries. References to "NRP" and "Natural Resource Partners" refer to 
Natural Resource Partners L.P. only, and not to NRP (Operating) LLC or any of Natural Resource Partners L.P.’s subsidiaries. 
References to "Opco" refer to NRP (Operating) LLC, a wholly owned subsidiary of NRP, and its subsidiaries. References to NRP 
Oil and Gas refer to NRP Oil and Gas LLC, a wholly owned subsidiary of NRP. NRP Finance Corporation ("NRP Finance") is a 
wholly owned subsidiary of NRP and a co-issuer with NRP on the 9.125% senior notes.

Executive Overview 

We  are  a  diversified  natural  resource  company  engaged  principally  in  the  business  of  owning,  managing  and  leasing  a 
diversified portfolio of mineral properties in the United States, including interests in coal, trona and soda ash, crude oil and natural 
gas, construction aggregates, frac sand and other natural resources. Our common units trade on the New York Stock Exchange 
under the symbol "NRP". The information presented in Item 7. reflects the one-for-ten reverse unit split that was effective on 
February 17, 2016.

For the year ended December 31, 2015, we recorded revenues and other income of $488.8 million, and a net loss of $571.7 
million. During 2015, Adjusted EBITDA and Distributable Cash Flow, which we consider to be the critical measures in evaluating 
our operating performance, met or exceeded the guidance issued to the public markets in February 2015, as revised in August 
2015.  Despite the rapidly deteriorating coal and oil and gas markets in 2015, we recorded Adjusted EBITDA in 2015 of $292.1 
million, which was essentially flat compared to our Adjusted EBITDA in 2014, and Distributable Cash Flow of $197.0 million, 
which exceeded expectations and was down only 5% compared to 2014.  Adjusted EBITDA and Distributable Cash Flow are non-
GAAP financial measures. For a reconciliation of Adjusted EBITDA to net income, see "Item 6. Selected Financial Data—Non-
GAAP Financial Measures—Adjusted EBITDA." For a reconciliation of Distributable Cash Flow to net cash provided by operating 
activities see "Item 6. Selected Financial Data—Non-GAAP Financial Measures—Distributable Cash Flow." Management believes 
that  the  presentation  of Adjusted  EBITDA  and  Distributable  Cash  Flow  provide  information  useful  in  assessing  our  segment 
financial condition and results of operations. Adjusted EBITDA and Distributable Cash Flow as defined by us may not be comparable 
to similarly titled measures used by other companies and should be considered in conjunction with net income (loss) and cash 
provided by (used in) operating activities, respectively.

Our business is organized into four operating segments:

46

Coal, Hard Mineral Royalty and Other—consists primarily of coal royalty, coal related transportation and processing 
assets, aggregate and industrial minerals royalty assets and timber. Our coal reserves are primarily located in Appalachia, the 
Illinois Basin and the Western United States. Our aggregates and industrial minerals are located in a number of states across the 
United States.    

Soda Ash—consists of our 49% non-controlling equity interest in a trona ore mining operation and soda ash refinery in the 
Green River Basin, Wyoming. Ciner Resources LP, our operating partner, mines the trona, processes it into soda ash, and distributes 
the soda ash both domestically and internationally into the glass and chemicals industries. We receive regular quarterly distributions 
from this business. 

VantaCore—consists of our construction materials business acquired in October 2014 that operates hard rock quarries, an 
underground limestone mine, sand and gravel plants, asphalt plants and marine terminals. VantaCore operates in Pennsylvania, 
West Virginia, Tennessee, Kentucky and Louisiana. 

Oil and Gas—consists of our non-operated working interests, royalty interests and overriding royalty interests in oil and 
natural gas properties. Our primary interests in oil and natural gas producing properties are non-operated working interests located 
in the Williston Basin in North Dakota and Montana. We also own fee mineral, royalty or overriding royalty interests in oil and 
gas properties in several other regions, including the Appalachian Basin, Oklahoma and Louisiana. 

(cid:35)(cid:85)(cid:82)(cid:82)(cid:69)(cid:78)(cid:84)(cid:0)(cid:44)(cid:73)(cid:81)(cid:85)(cid:73)(cid:68)(cid:73)(cid:84)(cid:89)(cid:0)(cid:48)(cid:79)(cid:83)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)

As of December 31, 2015, we had $64.8 million of liquidity that consisted of $51.8 million in cash and $13.0 million in 
combined borrowing capacity under our revolving credit facilities. During the year ended December 31, 2015, we reduced our 
debt by a net amount of $91.0 million. Opco's $300.0 million revolving credit facility matures in October 2017, and as of December 
31, 2015, we had $290.0 million outstanding thereunder. We borrowed $75.0 million under Opco's revolving credit facility in 
September 2015 in order to repay Opco's term loan in full. In October 2015, the borrowing base under the NRP Oil and Gas 
revolving credit facility was redetermined to $88.0 million, and we repaid $15.0 million under that credit facility, reducing our 
outstanding borrowings thereunder to $85.0 million. As of the date of this report, the combined borrowing capacity under our two 
revolving credit facilities is $13.0 million.

In February 2016, we sold the aggregates reserves and related royalty rights at three aggregates operations located in Texas, 
Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, of our hard mineral reserves as of December 
31, 2015 for $10.0 million in cash. The effective date of the sale was February 1, 2016. In February 2016, we sold royalty and 
overriding royalty interests in several producing properties located in the Appalachian Basin, including our overriding royalty 
interests in the Marcellus Shale, for $37.5 million in cash.  The sale included royalty and overriding royalty interests in approximately 
765 gross producing wells as of December 31, 2015 and approximately 10% of our estimated proved reserves, or 1,094 MBoe, as 
of December 31, 2015, or 1,094 MBoe. The effective date of the sale was January 1, 2016. We intend to use the net proceeds from 
these asset sales to repay debt.

We have significant debt service requirements, including $80.8 million in principal payments on Opco's senior notes each 
year through 2018, and our operating results continue to be impacted by the adverse conditions in the commodity markets. In April 
2015, we announced a long-term plan to strengthen our balance sheet, reduce debt and enhance liquidity in order to reposition the 
partnership for future growth. As part of that plan, we reduced our cash distributions with respect to the first and second quarters 
of 2015 to $0.90 per common unit (giving effect to the one-for-ten reverse unit split effective on February 17, 2016), a 75% decrease 
from the distribution paid with respect to fourth quarter of 2014. In October 2015, the Board further reduced the distribution to 
$0.45 per common unit (giving effect to the one-for-ten reverse unit split effective on February 17, 2016) with respect to the third 
quarter of 2015, representing an additional 50% reduction in the distribution paid with respect to the second quarter of 2015. The 
cash savings resulting from the distribution reductions are being used primarily to repay debt.  We have also taken steps to reduce 
general and administrative and other overhead costs in connection with these efforts. However, we have determined that the cash 
savings from the distribution cuts and our cost reduction efforts will not be sufficient to meet our deleveraging objectives and have 
determined to sell certain assets to help meet these objectives. While we have closed two asset sale transactions, if we are unable 
to complete additional asset sales and conditions in the commodity markets continue to deteriorate, our liquidity and our ability 
to comply with the financial and other restrictive covenants contained in our debt agreements will be adversely affected.

47

(cid:35)(cid:85)(cid:82)(cid:82)(cid:69)(cid:78)(cid:84)(cid:0)(cid:50)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:83)(cid:15)(cid:45)(cid:65)(cid:82)(cid:75)(cid:69)(cid:84)(cid:0)(cid:47)(cid:85)(cid:84)(cid:76)(cid:79)(cid:79)(cid:75)(cid:0)

Coal, Hard Minerals Royalty and Other Business Segment

For the year ended December 31, 2015, our Coal, Hard Minerals Royalty and Other business segment contributed revenues 
and other income of $246.4 million, Adjusted EBITDA of $204.6 million, and Distributable Cash Flow of $212.2 million. Our 
revenues and other income from the Coal, Hard Mineral Royalty and Other segment represented 51% of our total revenues and 
other income in 2015, as compared to 64% of total revenues and other income in 2014, in part due to revenues reported for a full 
year of ownership of VantaCore. Although our total revenues and other income for 2015 increased over 2014, our Coal, Hard 
Mineral Royalty and Other revenues were down 4% compared to the same period. The majority of this decrease was due to lower 
coal  prices  in  each  of  the Appalachian  regions  during  the  period  and  in  the  Illinois  Basin  as  a  result  primarily  of  lower  coal 
production  during  the  period. This  decrease  in  coal  royalty  revenues  was  partially  offset  by  an  increase  in  other  coal  related 
revenues,  which  increased  82%  over  the  2014  period,  due  to  increased  minimums  recognized  as  revenue,  increases  in  gains 
recognized on coal reserve swaps, condemnation payments and the receipt of lease assignment fees. 

Both the thermal and metallurgical coal markets remain severely challenged, and we do not anticipate that either market will 
recover in the near term. We expect that coal producers will continue to cut production and idle additional mines in response to 
market conditions, but we do not know to what extent our properties may be affected. A number of coal producers have filed 
petitions for reorganization under Chapter 11 of the U.S. Bankruptcy Code, and additional producers may file for bankruptcy. 
Historically, our leases have generally been assumed and all pre-petition bankruptcy amounts have been cured in full in our lessees’ 
bankruptcy processes, but we have no assurance this will continue in the future. In October 2015, Patriot Coal Corporation completed 
the sale of its assets in accordance with its bankruptcy plan. All of our leases were assumed and assigned in the sale process, and 
we received full pre-petition cure payments. Alpha Natural Resources ("Alpha"), which is our second largest lessee, filed for 
Chapter 11 bankruptcy protection in August 2015. Alpha has continued operating and paying royalties to us following the bankruptcy 
filing. However, Alpha has reduced production and idled certain mines, and we expect that Alpha will continue to reduce production 
and/or idle mines during its bankruptcy process. Production cuts and mine idlings by Alpha have resulted in and would continue 
to result in decreased royalty payments to us to the extent such production cuts or idlings are on our properties. We estimate that 
Alpha owes us approximately $3.2 million in pre-petition royalties and minimum payments, and we expect to receive pre-petition 
amounts due to us with respect to any leases that are assumed in the bankruptcy process. Arch Coal, Inc. filed for Chapter 11 
bankruptcy protection in January 2016.  While we do not yet know whether our leases will be assumed or rejected in Arch’s 
bankruptcy process, our overall exposure to Arch is immaterial.

While producers of Central Appalachian thermal coal have struggled for an extended period due to the high cost nature of 
their operations, production from our Illinois Basin properties also decreased by 15% in 2015 as compared to 2014. Part of the 
decrease in production from our Illinois Basin properties is attributable to the idling of Foresight Energy's ("Foresight Energy") 
Deer Run mine (which we also refer to as our Hillsboro property) as a result of elevated carbon monoxide levels at the mine 
beginning in March 2015. In July 2015, we received a notice from Foresight Energy declaring a resulting force majeure event at 
the Deer Run mine. While we have filed a lawsuit disputing Foresight Energy’s claim of force majeure, the effect of a valid force 
majeure declaration would relieve Foresight Energy of its obligation to pay us quarterly minimum deficiency payments with respect 
to the Deer Run mine until mining resumes. Under the lease for the Deer Run mine, Foresight Energy is required to make minimum 
deficiency payments to us of $7.5 million per quarter, or $30.0 million per year. The amount payable to us as the minimum deficiency 
payment with respect to any quarter is reduced by the amount of coal royalties actually paid to us for tonnage sold at the mine 
with respect to that quarter. We received royalty payments on tonnage sold from coal stockpiles at the Deer Run mine during the 
second and third quarters of 2015, but royalty payments from tonnage sold with respect to the fourth quarter of 2015 significantly 
declined and we expect that the stockpiles will be depleted early in the first quarter of 2016. Foresight Energy’s failure to make 
the deficiency payments with respect to the second, third and fourth quarters of 2015 resulted in a negative cash impact to us of 
$16.2 million. Such amount will increase for each quarter during which mining operations continue to be idled.  We do not know 
when, or if, mining activities at the Deer Run mine will recommence.

The metallurgical coal markets continued to deteriorate during 2015, and the metallurgical coal benchmark price for the first 
quarter of 2016 was set at a new multi-year low. We derived approximately 38% of our coal royalty revenues and 30% of the 
related production from metallurgical coal during 2015. The global metallurgical coal market continues to suffer from oversupply 
driven in part by reduced demand from China. Domestic coal producers are also burdened by the effects of the relatively strong 
U.S. dollar, which increases the production cost of domestic coal producers relative to foreign producers.

48

Soda Ash Business Segment

For the year ended December 31, 2015, our Soda Ash business segment contributed revenues and other income of $49.9 
million, Adjusted EBITDA of $46.8 million, and Distributable Cash Flow of $43.0 million. Our trona mining and soda ash refinery 
investment performed in line with our expectations in 2015 with record soda ash production volumes. During 2015, the international 
market for soda ash weakened somewhat due to softer pricing, but Ciner Wyoming’s international sales were consistent with 
expectations. Domestic sales volumes, which are typically sold at higher prices than soda ash sold internationally, have remained 
relatively stable. The cash we receive from Ciner Wyoming is in part determined by the quarterly distributions declared by Ciner 
Resources LP. In February 2016, Ciner Resources LP paid a quarterly distribution of $0.5575 per common unit with respect to the 
fourth quarter of 2015, an increase of 1% over the distribution paid with respect to the third quarter of 2015 and an increase of 5% 
over the distribution paid with respect to the fourth quarter of 2014.

VantaCore Business Segment

For the year ended December 31, 2015, our VantaCore business segment contributed revenues and other income of $139.0 

million, Adjusted EBITDA of $22.1 million, and Distributable Cash Flow of $18.8 million. 

VantaCore’s construction aggregates mining and production business is largely dependent on the strength of the local markets 
that it serves and is also seasonal, with lower production and sales expected during the first quarter of each year due to winter 
weather. VantaCore’s Laurel Aggregates operation in southwestern Pennsylvania serves producers and oilfield service companies 
operating in the Marcellus and Utica Shales and was impacted during 2015 by the slowing pace of exploration and development 
of natural gas in those areas due to low natural gas prices. Increased local construction activity partially offset these declines during 
2015, but we expect that Laurel’s business will continue to be impacted by decreased natural gas development activities. VantaCore’s 
operations  based  in  Clarksville,  Tennessee  and  Baton  Rouge,  Louisiana  depend  on  the  pace  of  commercial  and  residential 
construction in those areas. The Clarksville operation performed above expectations during 2015, while the Baton Rouge operation 
volumes were lower than expected. In June 2015, VantaCore purchased a hard rock quarry operation located on the Tennessee 
River near Grand Rivers, Kentucky from one of NRP’s aggregates lessees that had previously idled the operation. This operation 
continues to lease reserves from NRP and sells its produced limestone aggregates in both the local market and downstream to 
river-based markets.

Oil and Gas Business Segment

For the year ended December 31, 2015, our Oil and Gas business segment contributed revenues and other income of $53.6 
million, Adjusted EBITDA of $31.0 million, and Distributable Cash Flow of $24.6 million. Revenues in our Oil and Gas business 
segment decreased year-over year primarily due to a decline in oil prices, partially offset by increased production volumes. 

Global oil prices continued to decline in 2015 and remained significantly lower than 2014, and prices have continued to 
decline in the first quarter of 2016. Although domestic crude oil production has shown signs of decline, inventories remain above 
the five-year average indicating continued excessive supply. Production of crude is estimated to continue to decline as a result of 
reduced development drilling activities. Natural gas prices have also shown recent declines due to reduced demand and increased 
inventories. Our oil and gas revenues will continue to fluctuate with changes in prices for oil and natural gas and are expected to 
decrease over time due to natural production declines in producing wells and significantly decreased drilling activity.  As of the 
date of this filing, we have not hedged any of our future oil or natural gas production.

(cid:45)(cid:65)(cid:78)(cid:65)(cid:71)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:7)(cid:83)(cid:0)(cid:38)(cid:79)(cid:82)(cid:69)(cid:67)(cid:65)(cid:83)(cid:84)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:51)(cid:84)(cid:82)(cid:65)(cid:84)(cid:69)(cid:71)(cid:73)(cid:67)(cid:0)(cid:48)(cid:76)(cid:65)(cid:78)

Opco’s revolving credit facility matures in October 2017 and NRP’s 9.125% Senior Notes mature in October 2018. We 
believe we need to significantly improve our leverage ratios prior to the maturity thereof in order to be able to refinance or restructure 
such debt. We remain committed to our strategic plan announced in April 2015 to improve our balance sheet and reduce leverage, 
and intend to take all necessary steps to execute on that plan, including through asset sales and other means. Through February 
2016, we completed asset sales for $47.5 million in gross proceeds. However, we believe the deterioration in the commodity 
markets will continue to have a negative impact on our results of operations, which in turn may prevent us from achieving our 
leverage ratio goals. Traditionally, we have accessed the debt and equity capital markets on a regular basis and have relied on bank 
credit facilities to finance our business activities. However, due to the current commodity price environment and the state of the 
coal markets in particular, we believe we do not currently have the ability to access either the debt or equity capital markets. In 
addition, the volatility in the energy industry combined with recent bankruptcies and additional perceived credit risks of companies 

49

with coal and/or oil and gas exposure has resulted in traditional bank lenders seeking to reduce or eliminate their lending exposure 
to these companies. Accordingly, we will be required over the near term to run our business and service our debt through cash 
from operations or asset sales. In addition, we may be required to seek financing from non-traditional sources at unfavorable 
pricing or with unfavorable terms to run our business or to refinance or restructure our 2017 and 2018 debt maturities.

While NRP has a diversified portfolio of assets and a history and continued forecast of profitable operations with positive 
operating cash flows, its operating results and credit metrics continue to be impacted by demand challenges for coal and excess 
worldwide supply of oil and gas. In particular, as described in "Note 10. Debt and Debt—Affiliate" in the Consolidated Financial 
Statements included elsewhere in this Annual Report on Form 10-K, the agreements governing the outstanding debt of NRP Oil 
and Gas and Opco contain customary financial covenants, including maintenance covenants, and other restrictive covenants. In 
addition, NRP has issued $425 million of 9.125% Senior Notes, that are governed by an indenture ("the Indenture") containing 
customary incurrence-based financial covenants and other covenants, but not maintenance covenants. The following discussion 
presents management’s outlook and strategic plan to address its debt covenant compliance. 

(cid:47)(cid:80)(cid:67)(cid:79)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:46)(cid:50)(cid:48)

As of December 31, 2015, Opco had $290.0 million of indebtedness outstanding under its revolving credit facility due 
October 2017 (the "Opco Credit Facility") and $585.9 million outstanding under several series of Private Placement Notes (the 
"Opco Private Placement Notes") (collectively referred to as the "Opco Debt agreements"). The maximum leverage ratio under 
the Opco Debt agreements is required to be below 4.0x through March 31, 2016. Commencing with respect to the period ended 
June 30, 2016, the maximum leverage ratio reduces to 3.75x and reduces again to 3.5x commencing with respect to the period 
ended June 30, 2017. In addition, the Opco Debt agreements contain certain additional customary negative covenants that, among 
other items, restrict Opco’s ability to incur additional debt, grant liens on its assets, make investments, sell assets and engage in 
business combinations.

As of December 31, 2015, Opco was in compliance with and we forecast that Opco will continue to remain in compliance 
through December 31, 2016 with the covenants contained in its debt agreements. In addition, we believe Opco has sufficient 
liquidity to make all regularly scheduled principal and interest payments through December 31, 2016. We are currently pursuing 
or considering a number of actions including (i) dispositions of assets, (ii) actively managing our debt capital structure through a 
number  of  potential  alternatives,  including  exchange  offers  and  non-traditional  debt  financing,  (iii)  minimizing  our  capital 
expenditures,  (iv)  obtaining  waivers  or  amendments  from  our  lenders,  (v)  effectively  managing  our  working  capital  and  (vi) 
improving our cash flows from operations. While we forecast that we will be in compliance with all of the covenants under the 
Opco  Debt  agreements  through  December  31,  2016,  our  forecast  is  sensitive  to  commodity  pricing  and  counterparty  risk. 
Accordingly, we intend to pursue one or more of the alternatives discussed above in order to mitigate the effects of further commodity 
price and market deterioration which could otherwise cause us to breach financial covenants under the Opco Debt agreements. 
Breaches of the Opco Debt agreement covenants that are not waived or cured, to the extent possible, would result in an event of 
default under the Opco Debt agreements, and if such debt is accelerated by the lenders thereunder, such acceleration would also 
result in a cross-default under the Indenture.

(cid:46)(cid:50)(cid:48)(cid:0)(cid:47)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:65)(cid:83)

NRP Oil and Gas had $85.0 million outstanding under its senior secured, reserve-based revolving credit facility (the "RBL 
Facility") as of December 31, 2015. The facility is secured by a first priority lien on substantially all of NRP Oil and Gas’s assets 
and is not guaranteed by NRP or any other subsidiary of NRP.  Due to the significant and sustained decline in oil prices since the 
end of 2014, we forecast that NRP Oil and Gas may not be able to remain in compliance with the 3.5x leverage ratio as required 
in the RBL Facility during the next 12 months.  In addition, we expect that, due to current oil and gas prices, the next borrowing 
base redetermination under the RBL Facility that is scheduled to occur in May 2016 may result in a reduction of the borrowing 
base by an amount that would exceed NRP Oil and Gas’s ability to repay principal within the required time-frame following such 
redetermination. In addition, the RBL Facility requires the entity to provide annual financial statements that include a report from 
its independent registered public accounting firm with an opinion that does not contain "a "going concern" or like qualification or 
exception." Any of these events would qualify as an event of default and would provide the RBL Facility lenders with the ability 
to accelerate the debt outstanding under the RBL Facility to the extent not waived or cured. While we are attempting to take 
appropriate mitigating actions, there is no assurance that any particular actions with respect to amending, refinancing, extending 
the maturity or curing potential defaults in the RBL Facility will be sufficient, and we may be required to sell some or all of the 
assets of NRP Oil and Gas, raise new equity capital at NRP Oil and Gas or pursue restructuring alternatives. As a result, we believe 
there is substantial doubt about the ability of NRP Oil and Gas to continue as a going concern through December 31, 2016. As we 

50

were in compliance with all covenants contained in the RBL Facility throughout 2015 and at December 31, 2015, we have classified 
this debt as non-current in accordance with its terms.

An event of default under the RBL facility and subsequent acceleration of that debt by the lenders thereunder would not 
result in a cross-default under the Indenture. NRP Oil and Gas is designated as an "Unrestricted Subsidiary" for purposes of the 
Indenture, which prevents an event of default under the RBL Facility and subsequent acceleration of that debt from triggering an 
event of default under the Indenture.  In addition, there are no cross-defaults under the Opco Debt agreements as a result of defaults 
under the RBL Facility.  As a result, there would be no default or acceleration of indebtedness under the Indenture or under the 
Opco Debt agreements in the event NRP Oil and Gas is in default under its RBL Facility.

51

Results of Operations

(cid:57)(cid:69)(cid:65)(cid:82)(cid:0)(cid:37)(cid:78)(cid:68)(cid:69)(cid:68)(cid:0)(cid:36)(cid:69)(cid:67)(cid:69)(cid:77)(cid:66)(cid:69)(cid:82)(cid:0)(cid:19)(cid:17)(cid:12)(cid:0)(cid:18)(cid:16)(cid:17)(cid:21)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:65)(cid:82)(cid:69)(cid:68)(cid:0)(cid:84)(cid:79)(cid:0)(cid:57)(cid:69)(cid:65)(cid:82)(cid:0)(cid:37)(cid:78)(cid:68)(cid:69)(cid:68)(cid:0)(cid:36)(cid:69)(cid:67)(cid:69)(cid:77)(cid:66)(cid:69)(cid:82)(cid:0)(cid:19)(cid:17)(cid:12)(cid:0)(cid:18)(cid:16)(cid:17)(cid:20)

Adjusted EBITDA (Non-GAAP Financial Measure)

Adjusted EBITDA decreased $2.5 million, or 1%, from $294.6 million in 2014 to $292.1 million in 2015. The decrease is 
mainly related to declines in our Coal, Hard Mineral Royalty and Other and Oil and Gas business segments year-over-year, partially 
offset by higher income from our VantaCore business that was acquired in October 2014. Adjusted EBITDA is a non-GAAP 
financial measure. See "Item 6. Selected Financial Data—Non-GAAP Financial Measures—Adjusted EBITDA" for an explanation 
of Adjusted EBITDA and see below for our Adjusted EBITDA by business segment and a reconciliation to net income (loss) (in 
thousands):

For the Year Ended

December 31, 2015

Net income (loss)

Less: equity earnings from
unconsolidated investment

Less: gain on reserve swap

Add: distributions from unconsolidated
investment

Add: depreciation, depletion and
amortization
Add: asset impairment

Add: interest expense

Adjusted EBITDA

December 31, 2014

Net income (loss)

Less: equity earnings from
unconsolidated investment

Less: gain on reserve swap
Add: distributions from unconsolidated
investment

Add: depreciation, depletion and
amortization

Add: asset impairment

Add: interest expense

Adjusted EBITDA

Operating Segments

Coal, Hard
Mineral
Royalty and
Other

Soda Ash

VantaCore

Oil and Gas

Corporate
and
Financing

Total

$ (138,388) $

49,918

$

272

$ (377,365) $ (106,157) $ (571,720)

—

(9,290)

(49,918)
—

—

46,795

—

—

—

—

—

—

44,478

307,800

—

—

—

—

15,578

6,218

—

40,772

367,576

—

$ 204,600

$

46,795

$

22,068

$

30,983

—

—

—

—

—

(49,918)
(9,290)

46,795

100,828

681,594

93,827

93,827
$ (12,330) $ 292,116

$ 143,678

$

41,416

$

32

$

14,338

$ (90,634) $ 108,830

—

(5,690)

(41,416)
—

—

46,638

—

—

—

—

—

—

52,645

26,209

—

—

—

—

3,296

23,935

—

—

—

—

$ 216,842

$

46,638

$

3,328

$

38,273

—

—

—

—

—

(41,416)
(5,690)

46,638

79,876

26,209

80,185

80,185
$ (10,449) $ 294,632

52

Distributable Cash Flow(cid:3)(Non-GAAP Financial Measure)

Distributable Cash Flow for 2015 decreased $11.4 million, or 5%, from $208.4 million in 2014 to $197.0 million in 2015. 
This decrease is due primarily to a reduction in cash provided by our coal operations, partially offset by our VantaCore business 
that was acquired in October 2014. Distributable Cash Flow is a non-GAAP financial measure. See "Item 6. Selected Financial 
Data—Non-GAAP Financial Measures—Distributable Cash Flow" for an explanation of Distributable Cash Flow and see below 
for Distributable Cash Flow by business segment a reconciliation to net cash provided by (used in) operating activities (in thousands):

Distributable Cash Flow

$ 212,193

$

43,029

$

18,802

$

For the Year Ended

December 31, 2015

Net cash provided by (used in) operating
activities

Add: return on long-term contract
receivables—affiliate
Add: proceeds from sale of PP&E

Add: proceeds from sale of mineral
rights
Less: maintenance capital expenditures

Less: distributions to non-controlling
interest

December 31, 2014

Net cash provided by (used in) operating
activities

Add: return on long-term contract
receivables—affiliate

Add: return of unconsolidated equity
investment
Add: proceeds from sale of PP&E

Add: proceeds from sale of mineral
rights

Less: maintenance capital expenditures
Less: distributions to non-controlling
interest

Operating Segments

Coal, Hard
Mineral
Royalty and
Other

Soda Ash

VantaCore

Oil and Gas

Corporate
and
Financing

Total

$ 197,913

$

43,029

$

23,605

$

40,536

$ (101,659) $ 203,424

2,463
10,100

3,505

(416)

(1,372)

—
—

—

—

—

—
924

—
—

—
(5,727)

3,591
(18,139)

—
—

—

—

2,463
11,024

7,096
(24,282)

—

(1,372)
24,616

—

(2,744)
$ (101,659) $ 196,981

$ 232,484

$

42,516

$

2,746

$

24,671

$ (91,662) $ 210,755

1,904

—

—

968

412

(316)

(487)

3,633

—

—

—

—

—

—

38

—
(900)

—

—

—

—

—
(7,154)

—

—

—

—

—

1,904

3,633

1,006

412
(8,370)

(487)
17,030

—

(974)
$ (91,662) $ 208,366

Distributable Cash Flow

$ 234,965

$

46,149

$

1,884

$

53

Revenues and Other Income

The following table shows our diversified sources of revenues and other income by business segment for the years ended 

December 31, 2015 and 2014 (in thousands except for percentages):

2015

Revenues

Percentage of total

2014

Revenues

Percentage of total

Coal, Hard
Mineral Royalty
and Other

Soda Ash

VantaCore

Oil and Gas

Total

246,353

49,918

139,013

51%

10%

28%

256,719

64%

41,416

10%

42,051

11%

53,565

11%

59,566

15%

488,849

399,752

Revenues and other income increased $89.0 million, or 22%, from $399.8 million in 2014 to $488.8 million in 2015.  This 
increase is primarily due to the inclusion of a full year of VantaCore revenues and an increase in Soda Ash revenues during the 
year. These increases were partially offset by a reduction of revenues in both our Oil and Gas and Coal, Hard Mineral Royalty and 
Other business segments. 

54

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)

Revenues and other income related to our Coal, Hard Mineral Royalty and Other segment decreased $10.4 million, or 4%, 
from $256.7 million in 2014 to $246.4 million in 2015. The table below presents coal royalty production and revenues derived 
from our major coal producing regions, hard mineral royalty income and the significant categories of other revenues:

Coal royalty production (tons)

Appalachia
Northern
Central
Southern

Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast

Total coal royalty production
Average coal royalty revenue per ton

Appalachia
Northern
Central
Southern
Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast
Combined average coal royalty revenue per ton

Coal royalty revenues

Appalachia
Northern
Central
Southern

Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast

Total coal royalty revenue

Other coal related revenues

Override revenue
Transportation and processing fees
Minimums recognized as revenue
Lease assignment fees
Condemnation related revenues
Coal bonus related revenues
Reserve swap
Wheelage

Total other coal related revenues

Total coal related revenues and coal related revenues—affiliates

Hard mineral royalty revenues

Property tax revenue
Other
Total coal, hard mineral royalty and other revenue

For the Years Ended
December 31,

2015

2014

Increase
(Decrease)

Percentage
Change

(In thousands, except percent and per ton data)
(Unaudited)

9,562
16,862
3,803
30,227
11,173
4,905
740
47,045

0.28
3.85
4.57
2.81
3.94
2.54
3.47
3.06

2,672
64,877
17,390
84,939
44,063
12,443
2,570
144,015

2,920
22,033
15,489
21,000
3,669
—
9,290
3,166
77,567
221,582

8,090

11,258
5,423
246,353

$

$

$

$

$

$
$

$

$
$
$

9,339
20,092
3,914
33,345
13,177
2,844
1,093
50,459

0.92
4.46
5.18
3.55
4.10
2.74
3.47
3.65

8,621
89,627
20,292
118,540
54,049
7,804
3,793
184,186

4,601
22,048
6,659
—
—
98
5,690
3,442
42,538
226,724

12,073

13,609
4,313
256,719

$

$

$

$

$

$
$

$

$
$
$

$

$

$

$

$

$
$

$

$
$
$

223
(3,230)
(111)
(3,118)
(2,004)
2,061
(353)
(3,414)

(0.64)
(0.61)
(0.61)
(0.74)
(0.16)
(0.20)
—
(0.59)

(5,949)
(24,750)
(2,902)
(33,601)
(9,986)
4,639
(1,223)
(40,171)

(1,681)
(15)
8,830
21,000
3,669
(98)
3,600
(276)
35,029
(5,142)

(3,983)

(2,351)
1,110
(10,366)

2 %
(16)%
(3)%
(9)%
(15)%
72 %
(32)%
(7)%

(70)%
(14)%
(12)%
(21)%
(4)%
(7)%
— %
(16)%

(69)%
(28)%
(14)%
(28)%
(18)%
59 %
(32)%
(22)%

(37)%
— %
133 %
100 %
100%
(100)%
63 %
(8)%
82 %
(2)%

(33)%

(17)%
26 %
(4)%

Total coal production decreased 3.4 million tons, or 7%, from 50.4 million tons in 2014 to 47.0 million tons in 2015. Total 
coal royalty revenues decreased $40.2 million, or 22%, from $184.2 million in 2014 to $144.0 million in 2015. Coal prices continue 
to be depressed, which has negatively affected our coal related revenues. Further declines or a continued low price environment 
could have an additional adverse effect on our coal related revenues. During the year ended December 31, 2015 as compared to 
2014, total coal production and total coal royalty revenues were down in Appalachia, the Illinois Basin and the Gulf Coast, while 

55

 
 
 
we saw a significant increase in the Northern Powder River Basin. All Appalachian regions saw a decrease in coal royalty revenues 
during the year with coal royalty revenues in Northern Appalachia down 69% despite a 2% increase in production from that area. 
We saw a decrease in the average coal revenue per ton throughout all of our regions, with the exception of the Gulf Coast whose 
average coal revenue per ton remained flat, for the year ended December 31, 2015 when compared to the year ended December 
31, 2014.

Other coal related revenues increased $35.0 million, or 82%, from $42.5 million in 2014 to $77.6 million in 2015. This 
increase is primarily a result of two lease assignment fee payments received in 2015 totaling $21.0 million, an $8.8 million increase 
in minimums recognized as revenue, $3.7 million public roadway condemnation payments and a $3.6 million increase in reserve 
swap gains year-over-year.  These increases were partially offset by decreased overriding royalty revenue in 2015.

Hard mineral royalty revenues decreased $4.0 million, or 33%, from $12.1 million in 2014 to $8.1 million in 2015. This 

decrease is due primarily to a decrease in minimums recognized as revenues and aggregate royalty revenues.

(cid:54)(cid:82)(cid:71)(cid:68)(cid:3)(cid:36)(cid:86)(cid:75)

Revenues and other income related to our Soda Ash segment increased $8.5 million, or 21%, from $41.4 million in 2014 to 
$49.9 million in 2015.  This increase is primarily related to our allocated percentage of Ciner Wyoming's $15.0 million increase 
in income year-over-year. For the year ended December 31, 2015, we received $46.8 million in cash distributions from Ciner 
Wyoming and for the year ended December 31, 2014, we received $46.6 million in cash distributions. 

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)

Tonnage sold by the VantaCore segment increased 5.1 million tons from 2.3 million tons in 2014 to 7.4 million tons in 2015.  
Revenues and other income related to our VantaCore segment increased $96.9 million, or 231%, from $42.1 million in 2014 to 
$139.0 million in 2015. This increase is due to the fact that VantaCore was acquired in the fourth quarter of 2014.

56

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)(cid:3)

Revenues and other income related to our Oil and Gas segment decreased $6.0 million, or 10%, from $59.6 million in 2014 
to $53.6 million in 2015. This decrease is due to lower commodity prices during the year, partially offset by increased production, 
primarily as a result of the acquisition of non-operated working interests in the Williston Basin in November 2014. The table below 
presents oil and gas production and revenues derived from our major oil and gas producing regions and the significant categories 
of oil and gas revenues: 

Williston Basin non-operated working interests:

Production volumes:

Oil (MBbl)
Natural gas (Mcf)
NGL (MBbl)
Total production (MBoe)
Average sales price per unit:

Oil (Bbl)
Natural gas (Mcf)
NGL (Bbl)

Revenues:

Oil
Natural gas
NGL
Non- production
Total revenues

Royalty and overriding royalty revenues

Total oil and gas revenues

For the Years Ended
December 31,

2015

2014

Increase
(Decrease)

Percentage
Change

(Dollars in thousands, except per unit data)
(Unaudited)

1,108
810
138
1,381

41.19
2.28
9.20

45,635
1,847
1,269
450
49,201

4,364

$

578
408
53
699

77.85
5.04
33.64

44,995
2,056
1,783
—
48,834

10,732

$

530
402
85
682

(36.66)
(2.76)
(24.44)

640
(209)
(514)
450
367

(6,368)

53,565

$

59,566

$

(6,001)

$

$

$

$

$

92 %
99 %
160 %
98 %

(47)%
(55)%
(73)%

1 %
(10)%
(29)%
100 %
1 %

(59)%

(10)%

Operating and Maintenance Expenses (including affiliates)

Operating and maintenance expenses (including affiliates) increased $77.8 million, or 83%, from $94.2 million in 2014 to 
$172.0 million in 2015. This increase is primarily related to the inclusion of a full year of VantaCore operating expenses in 2015. 

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)

Operating and maintenance expenses in our Coal, Hard Mineral Royalty and Other segment decreased $1.7 million, or 5%, 
from $34.2 million in 2014 to $32.5 million in 2015. This decrease is primarily related to decreased overhead expenses allocated 
to the segment, specifically a decrease in LTIP expense as a result of the decline in unit price year-over-year.

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)

Operating and maintenance expenses in our VantaCore segment increased $78.2 million from $38.7 million in 2014 to $116.9 
million in 2015. This increase is due to the fact that 2014 results only include three months of VantaCore activity as compared to 
twelve months in 2015.

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)

Operating and maintenance expenses in our Oil and Gas segment increased $1.3 million, or 6%, from $21.3 million in 2014 
to $22.6 million in 2015. This increase is primarily due to a full year of operating expenses related to the fourth quarter 2014 Sanish 
Field acquisition, partially offset by decreased overhead as a result of the 2014 consulting expenses related to the acquisition.  The 
average production cost per unit decreased $3.88 per unit, or 30%, from $13.08 per unit in 2014 to $9.20 per unit in 2015.

57

 
 
 
Depreciation, Depletion and Amortization ("DD&A") Expense

DD&A expense increased $20.9 million, or 26%, from $79.9 million in 2014 to $100.8 million in 2015. This increase is 
primarily related to a full year of DD&A expense on our VantaCore and Sanish Field assets acquired during the fourth quarter of 
2014, partially offset by decreased DD&A expense as a result of the reduction in our assets basis due to the 2015 asset impairments 
described below. 

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)

DD&A expense for our Coal, Hard Mineral Royalty and Other segment decreased $8.1 million, or 15%, from $52.6 million
in 2014 to $44.5 million in 2015. This decrease was primarily the result of the reduction in depletion expense on the assets that 
were impaired during the third and fourth quarters of 2015. 

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)

DD&A expense for our VantaCore segment increased $12.3 million from $3.3 million in 2014 to $15.6 million in 2015. This 

increase was due to the fact that 2014 results only include three months of activity as compared to a full year in 2015.

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)

DD&A expense for our Oil and Gas segment increased $16.9 million, or 70%, from $23.9 million in 2014 to $40.8 million
in 2015. This increase was primarily due to increased production as a result of a full year of expense on the assets acquired in the 
fourth quarter 2014 Sanish Field acquisition, partially offset by the impact of the reduction in asset basis on the assets impaired 
in the third and fourth quarters of 2015.

General and Administrative (including affiliates) ("G&A") Expense

Corporate and financing G&A expense includes corporate headquarters, financing and centralized treasury and accounting. 
These costs increased $1.8 million, or 17%, from $10.5 million in 2014 to $12.3 million in 2015. This increase was primarily due 
to an increase in salaries, bonus and benefits, consulting, rent and legal fees. This increase was partially offset by a decrease in 
LTIP expense as a result of the decline in unit price year-over-year.

58

Asset Impairment

Asset impairment expense increased $655.4 million from $26.2 million in 2014 to $681.6 million in 2015. We recorded the 

following asset impairments during the years ended December 31, 2015 and 2014 (in thousands):

Impaired Assets

Mineral Rights

Coal, hard mineral royalty and other

Oil and gas

Total Mineral Rights Impairment

Plant and Equipment

Coal, hard mineral royalty and other

VantaCore

Total Plant and Equipment Impairment

Intangible Assets

Coal, hard mineral royalty and other

Goodwill

VantaCore

Total impairment

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)

For the Year Ended 
December 31,

2015

2014

300,870

367,576

668,446

6,930

692
7,622

$

$

$

$

19,806

—

19,806

779

—
779

— $

5,624

5,526

681,594

$

$

—

26,209

$

$

$

$

$

$

$

Asset impairment expense related to our Coal, Hard Mineral and Other segment increased $281.6 million from $26.2 million
in 2014 to $307.8 million in 2015. This increase was primarily due to the significant impairment expense taken in the third quarter 
2015. Coal property impairments primarily resulted from idled operations in Appalachia combined with the continued deterioration 
in the coal markets and expectations of further reductions in global and domestic coal demand due to reduced global steel demand, 
low natural gas prices, and continued regulatory pressure on the electric power generation industry. Hard mineral royalty property 
impairments primarily resulted from greenfield development projects that have not performed as projected, leading to recent lease 
concessions on minimums and royalties combined with the continued regional market decline for certain properties. During the 
fourth quarter of 2015, we recognized an additional $8.2 million impairment expense on our coal properties as a result of continued 
market declines and $4.7 million impairment expense related to coal processing and transportation assets as well as obsolete 
equipment at our Logan office. During the second quarter of 2015 we recorded a $2.3 million impairment expense related to a 
coal preparation plant. With continued weakness in the commodity markets, we will continue to closely monitor our assets for 
impairment. It is reasonably possible that our estimate of future net cash flows could change in the near term. If conditions in coal 
markets continue to deteriorate, it is likely that additional non-cash write-downs of properties would occur in the future. 

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)

Asset impairment expense related to our VantaCore segment increased from $0.0 million in 2014 to $6.2 million in  2015. 
The 2015 impairment expense was primarily related to the $5.5 million write off of goodwill as well as a $0.7 million impairment 
related to obsolete plant and equipment. 

59

 
(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)

Asset impairment expense related to our Oil and Gas segment increased from $0.0 million in 2014 to $367.6 million in 2015.  
The 2015 impairment expense in our Oil and Gas segment primarily resulted from declines in future expected realized commodity 
prices and reduced expected drilling activity on our acreage. 

Given the volatility of oil and natural gas prices, it is reasonably possible that our estimate of future net cash flows from our 
oil and natural gas reserves could continue to change in the near term. If oil and natural gas prices decline from the prices used in 
our impairment analysis, it is likely that additional non-cash write-downs of oil and gas properties will occur in the future. If future 
capital expenditures are greater than expected or if we have significant declines in our oil and natural gas reserve volumes, our 
estimate of future net cash flows from oil and natural gas reserves would decrease and non-cash write-downs of our oil and natural 
gas properties may occur in the future. In order to test the sensitivity of the fair value of our oil and gas properties to changes in 
oil and gas prices, management modeled a 10% change in the forward price curve across the full term of expected future cash 
flows from our oil and gas properties. This 10% change in oil and gas prices resulted in zero additional non-cash write-downs and 
an immaterial decline in our oil and natural gas reserve volumes.

Interest Expense 

Interest expense increased $13.6 million, or 17%, from $80.2 million in 2014 to $93.8 million in 2015. This increase was 

primarily the result of additional debt incurred to complete acquisitions in the fourth quarter of 2014.

60

Results of Operations

(cid:57)(cid:69)(cid:65)(cid:82)(cid:0)(cid:37)(cid:78)(cid:68)(cid:69)(cid:68)(cid:0)(cid:36)(cid:69)(cid:67)(cid:69)(cid:77)(cid:66)(cid:69)(cid:82)(cid:0)(cid:19)(cid:17)(cid:12)(cid:0)(cid:18)(cid:16)(cid:17)(cid:20)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:65)(cid:82)(cid:69)(cid:68)(cid:0)(cid:84)(cid:79)(cid:0)(cid:57)(cid:69)(cid:65)(cid:82)(cid:0)(cid:37)(cid:78)(cid:68)(cid:69)(cid:68)(cid:0)(cid:36)(cid:69)(cid:67)(cid:69)(cid:77)(cid:66)(cid:69)(cid:82)(cid:0)(cid:19)(cid:17)(cid:12)(cid:0)(cid:18)(cid:16)(cid:17)(cid:19)

Adjusted EBITDA (Non-GAAP Financial Measure)

Adjusted EBITDA decreased $37.6 million, or 11%, from $332.2 million in 2013 to $294.6 million in 2014. This decrease 
is mainly related to the special distribution of $44.8 million received in 2013 from Ciner Wyoming as well as lower coal related 
revenues offset by higher earnings from our VantaCore and Oil and Gas business segments. Adjusted EBITDA is a non-GAAP 
financial measure. See "Item 6. Selected Financial Data—Non-GAAP Financial Measures—Adjusted EBITDA" for an explanation 
of Adjusted EBITDA and see below for Adjusted EBITDA by business segment and a reconciliation of to net income (loss) (in 
thousands):

For the Year Ended

December 31, 2014

Net income (loss)

Less: equity earnings from
unconsolidated investment

Less: gain on reserve swap

Add: distributions from unconsolidated
investment

Add: depreciation, depletion and
amortization
Add: asset impairment

Add: interest expense

Adjusted EBITDA

December 31, 2013

Net income (loss)

Less: equity earnings from
unconsolidated investment

Less: gain on reserve swap
Add: distributions from unconsolidated
investment

Add: depreciation, depletion and
amortization

Add: asset impairment

Add: interest expense

Adjusted EBITDA

Operating Segments

Coal, Hard
Mineral
Royalty and
Other

Soda Ash

VantaCore

Oil and Gas

Corporate
and
Financing

Total

$ 143,678

$

41,416

$

32

$

14,338

$ (90,634) $ 108,830

—

(5,690)

(41,416)
—

—

46,638

—

—

—

—

—

—

52,645

26,209

—

—

—

—

3,296

23,935

—

—

—

—

$ 216,842

$

46,638

$

3,328

$

38,273

—

—

—

—

—

(41,416)
(5,690)

46,638

79,876

26,209

80,185

80,185
$ (10,449) $ 294,632

$ 211,590

$

34,186

$

— $

5,198

$ (78,896) $ 172,078

—

(8,149)

(34,186)
—

—

72,946

58,502

734

—

—

—

—

—

—

—

—

—

—

—

—

—

5,875

—

—

$ 262,677

$

72,946

$

— $

11,073

—

—

—

—

—

(34,186)
(8,149)

72,946

64,377

734

64,396

64,396
$ (14,500) $ 332,196

61

Distributable Cash Flow(cid:3)(Non-GAAP Financial Measure)

Distributable Cash Flow for 2014 decreased by $98.5 million, or 32%, from $306.9 million in 2013 to $208.4 million in 
2014. This decrease was due primarily to a $44.8 million special distribution received from Ciner Wyoming in 2013, declines in 
the coal business, and an additional $21.0 million of interest paid in 2014 that resulted in a $36.3 million decrease in net cash 
provided by operations relative to 2013 and also a $9.5 million difference in proceeds from the sale of assets. Distributable Cash 
Flow is a non-GAAP financial measure. See "Item 6. Selected Financial Data—Non-GAAP Financial Measures—Distributable 
Cash Flow" for an explanation of Distributable Cash Flow and see below for Distributable Cash Flow by business segment and a 
reconciliation to net cash provided by (used in) operating activities (in thousands):

For the Year Ended

December 31, 2014

Net cash provided by (used in) operating
activities
Add: return on long-term contract
receivables—affiliate

Add: return of unconsolidated equity
investment

Add: proceeds from sale of PP&E

Add: proceeds from sale of mineral
rights
Less: maintenance capital expenditures

Less: distributions to non-controlling
interest

December 31, 2013

Net cash provided by (used in) operating
activities

Add: return on long-term contract
receivables—affiliate

Add: return of unconsolidated equity
investment
Add: proceeds from sale of PP&E

Add: proceeds from sale of mineral
rights

Less: maintenance capital expenditures

Less: distributions to non-controlling
interest

Operating Segments

Coal, Hard
Mineral
Royalty and
Other

Soda Ash

VantaCore

Oil and Gas

Corporate
and
Financing

Total

$ 232,484

$

42,516

$

2,746

$

24,671

$ (91,662) $ 210,755

1,904

—

—

968

412

(316)

(487)

3,633

—

—

—

—

—

—

38

—
(900)

—

—

—

—

—
(7,154)

—

—

—

—

—

1,904

3,633

1,006

412
(8,370)

(487)
17,030

—

(974)
$ (91,662) $ 208,366

$ 285,524

$

24,113

$

— $

9,292

$ (71,855) $ 247,074

2,558

—

—
—

48,833
—

10,929

—

(1,261)

—

—

—

—

—
—

—

—

—

—

—
—

—

—

—

—
—

—

—

2,558

48,833
—

10,929

—

(1,260)
8,032

—

(2,521)
$ (71,855) $ 306,873

Distributable Cash Flow

$ 234,965

$

46,149

$

1,884

$

Distributable Cash Flow

$ 297,750

$

72,946

$

— $

62

Revenues and Other Income

The following table shows our diversified sources of revenues and other income by business segment for the years ended 

December 31, 2014 and 2013 (in thousands except for percentages):

2014

Revenues

Percentage of total

2013

Revenues

Percentage of total

Coal, Hard
Mineral Royalty
and Other

Soda Ash

VantaCore

Oil and Gas

Total

256,719

64%

41,416

10%

306,851

34,186

86%

9%

42,051

11%

—

—%

59,566

15%

399,752

17,080

358,117

5%

Revenues and other income increased $41.7 million, or 12%, from $358.1 million in 2013 to $399.8 million in 2014.  This 
increase was mainly due to the fourth quarter 2014 acquisition of VantaCore and Sanish Field, partially offset by a $50.2 million
reduction in Coal, Hard Mineral Royalty and Other segment revenues.

63

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)

Revenues and other income related to our Coal, Hard Mineral Royalty and Other segment decreased $50.2 million, or 16%, 
from $306.9 million in 2013 to $256.7 million in 2014. The table below presents coal royalty production and revenues derived 
from our major coal producing regions, hard mineral royalty income and the significant categories of other revenues:

Coal royalty production (tons)

Appalachia
Northern
Central
Southern

Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast

Total coal royalty production
Average coal royalty revenue per ton

Appalachia
Northern
Central
Southern
Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast
Combined average coal royalty revenue per ton

Coal royalty revenues

Appalachia
Northern
Central
Southern

Total Appalachia

Illinois Basin
Northern Powder River Basin
Gulf Coast

Total coal royalty revenue

Other coal related revenues

Override revenue
Transportation and processing fees
Minimums recognized as revenue
Condemnation related revenues
Coal bonus related revenues
Reserve swap
Wheelage

Total other coal related revenues

Total coal related revenues and coal related revenues—affiliates

Hard mineral royalty revenues

Property taxes
Other
Total coal, hard mineral royalty and other revenue

For the Years Ended
December 31,

2014

2013

Increase
(Decrease)

Percentage
Change

(In thousands, except percent and per ton data)
(Unaudited)

9,339
20,092
3,914
33,345
13,177
2,844
1,093
50,459

0.92
4.46
5.18
3.55
4.10
2.74
3.47
3.65

8,621
89,627
20,292
118,540
54,049
7,804
3,793
184,186

4,601
22,048
6,659
—
98
5,690
3,442
42,538
226,724

12,073

13,609
4,313
256,719

$

$

$

$

$

$
$

$

$
$
$

11,505
20,801
4,151
36,457
13,087
2,778
970
53,292

1.27
5.05
6.30
4.00
4.28
2.72
3.39
3.99

14,643
105,004
26,156
145,803
56,001
7,569
3,290
212,663

10,372
22,519
6,528
10,370
—
8,149
3,593
61,531
274,194

13,479

15,416
3,762
306,851

$

$

$

$

$

$
$

$

$
$
$

(2,166)
(709)
(237)
(3,112)
90
66
123
(2,833)

(0.35)
(0.59)
(1.12)
(0.44)
(0.18)
0.02
0.08
(0.34)

(6,022)
(15,377)
(5,864)
(27,263)
(1,952)
235
503
(28,477)

(5,771)
(471)
131
(10,370)
98
(2,459)
(151)
(18,993)
(47,470)

(1,406)

(1,807)
551
(50,132)

$

$

$

$

$

$
$

$

$
$
$

(19)%
(3)%
(6)%
(9)%
1 %
2 %
13 %
(5)%

(27)%
(12)%
(18)%
(11)%
(4)%
1 %
2 %
(9)%

(41)%
(15)%
(22)%
(19)%
(3)%
3 %
15 %
(13)%

(56)%
(2)%
2 %
100 %
100 %
(30)%
(4)%
(31)%
(17)%

(10)%

(12)%
15 %
(16)%

Total coal production decreased 2.8 million tons, or 5%, from 53.3 million tons in 2013 50.5 million tons in 2014. Total coal 
royalty revenues decreased $28.5 million, or 13%, from $212.7 million in 2013 to $184.2 million in 2014. During the year ended 
December 31, 2014 as compared to the same period in 2013, total coal production, total coal royalty revenues and average coal 
royalty revenue per ton were down in all Appalachia regions. Production in the Illinois Basin remained relatively flat year-over-
year; however, total royalty revenues decreased $2.0 million due to a 4% decrease in average royalty revenue per ton. Total coal 
production, total coal royalty revenues and average royalty revenue per ton remained relatively flat in both the Northern Powder 
River Basin and the Gulf Coast.

64

 
 
 
Other coal related revenues decreased $19.0 million, or 31%, from $61.5 million in 2013 to $42.5 million in 2014. The 
decrease is primarily a result of a $10.4 million condemnation payment received in 2013 in addition to a $5.8 million decrease in 
override revenues and a $2.5 million decrease in reserve swap gains year-over-year

Hard mineral royalty revenues decreased $1.4 million, or 10%, from $13.5 million in 2013 to $12.1 million in 2014. This 
decrease is primarily due to one of our lessees moving from property on which we receive royalty revenue to property on which 
we receive overriding royalty revenue and another lessee temporarily idling its operation in early 2014. This decrease was offset 
by an increase in override revenues of approximately $2.0 million in our overriding royalty revenues from frac sand properties, 
the remaining increase is due to override revenues increasing on our Washington aggregates property due to a lessee moving from 
our owned property to an area subject to an override.

(cid:54)(cid:82)(cid:71)(cid:68)(cid:3)(cid:36)(cid:86)(cid:75)

Revenues and other income related to our Soda Ash segment increased $7.2 million, or 21%, from $34.2 million in 2013 to 
$41.4 million in 2014. This increase was due to improved earnings at Ciner Wyoming in 2014 over 2013. For the year ended 
December 31, 2014, we received $46.6 million in cash distributions and for the year ended December 31, 2014 we received $72.9 
million in cash, which included a one-time special distribution of $44.8 million. 

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)

Tonnage sold by the VanataCore segment was 2.3 million tons for the year ended December 31, 2014. Revenues and other 

income related to our VantaCore segment was $42.1 million in 2014. We acquired VantaCore in October 2014.

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)(cid:3)

Revenues and other income related to our Oil and Gas segment increased $42.5 million from $17.1 million in 2013 to $59.6 
million in 2014. This increase is due to a full year of revenues from our non-operated working interests in the Williston Basin that 
were acquired the second half of 2013. In addition, our 2014 results include revenues attributable to our Sanish Field properties 
acquired in November 2014.

Operating and Maintenance Expenses (including affiliates)

Operating and maintenance expenses (including affiliates) increased $52.2 million from $42.0 million in 2013 to $94.2 
million in 2014. This increase was primarily the result of expenses related to VantaCore and our Sanish Field operations, which 
were both acquired in the fourth quarter of 2014. 

Depreciation, Depletion and Amortization

Depreciation, depletion and amortization increased $15.5 million, or 24%, from $64.4 million in 2013 to $79.9 million in 
2014. This increase was due to a full year depletion on the oil and gas assets acquired in the second half of 2013 as well as the 
depreciation, depletion and amortization expense on the VantaCore and Sanish Field assets acquired during the fourth quarter of 
2014.

General and Administrative (including affiliates)

Corporate and financing G&A expenses include corporate headquarters, financing and centralized treasury and accounting. 
These costs decreased $4.2 million, or 28%, from $14.7 million in 2013 to $10.5 million in 2014. This decrease was primarily 
related to a decrease in LTIP expense as a result of the decline in our unit price.

Asset Impairment

Asset impairment expense increased $25.5 million from $0.7 million in 2013 to $26.2 million in 2014. This increase is due 
to the Coal, Hard Mineral Royalty and Other segment's impairment of $19.8 million related to its mineral rights, $5.6 million 
related to its intangible assets and $0.8 million related to its plant and equipment in 2014. The Coal, Hard Mineral Royalty and 
Other segment recorded a $0.7 million impairment related to its mineral rights in 2013.  

65

Interest Expense 

Interest expense increased $15.8 million, or 25%, from $64.4 million in 2013 to $80.2 million in 2014. Interest expense 
increased due to additional debt incurred in 2014 and 2013 to fund acquisitions as well  as a refinancing of our credit facility and 
payment on our term loan with 9.125% high yield notes.

Liquidity and Capital Resources

(cid:47)(cid:86)(cid:69)(cid:82)(cid:86)(cid:73)(cid:69)(cid:87)

As of December 31, 2015, we had $64.8 million of liquidity that consisted of $51.8 million in cash and $13.0 million in 
combined borrowing capacity under our revolving credit facilities. During the year ended December 31, 2015, we reduced our 
debt by a net amount of $91.0 million. Opco's $300.0 million revolving credit facility matures in October 2017, and as of December 
31, 2015, we had $290.0 million outstanding thereunder.  We borrowed $75.0 million under Opco's revolving credit facility in 
September 2015 in order to repay Opco's term loan in full. In October, 2015, the borrowing base under the NRP Oil and Gas 
revolving credit facility was redetermined to $88.0 million, and we repaid $15.0 million under that facility, reducing our outstanding 
borrowings under that facility to $85.0 million. As of the date of this report, the combined borrowing capacity under our revolving 
credit facilities is $13.0 million.

In February 2016, we sold the aggregates reserves and related royalty rights at three aggregates operations located in Texas, 
Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, of our hard mineral reserves as of December 
31, 2015 for $10.0 million in cash. The effective date of the sale was February 1, 2016. In February 2016, we sold royalty and 
overriding royalty interests in several producing properties located in the Appalachian Basin, including our overriding royalty 
interests in the Marcellus Shale, for $37.5 million in cash.  The sale included royalty and overriding royalty interests in approximately 
765 gross producing wells as of December 31, 2015 and approximately 10% of our estimated proved reserves, or 1,094 MBoe, as 
of December 31, 2015, or 1,094 MBoe. The effective date of the sale was January 1, 2016. We intend to use the net proceeds from 
these asset sales to repay debt. While we believe we have sufficient liquidity to meet our current financial needs, we have significant 
debt service requirements, including $80.8 million in principal payments on Opco's senior notes each year through 2018, and our 
operating results continue to be impacted by the adverse conditions in the commodity markets. In April 2015, we announced a 
long-term plan to strengthen our balance sheet, reduce debt and enhance liquidity in order to reposition the partnership for future 
growth. As part of that plan, we reduced our cash distributions during 2015 by over 87%. The cash savings resulting from the 
distribution reductions are being used primarily to repay debt. We have also taken steps to reduce general and administrative and 
other overhead costs in connection with these efforts. However, we have determined that the cash savings from the distribution 
cuts and our cost reduction efforts will not be sufficient to meet our delevraging objectives and have determined to sell certain 
assets to help meet these objectives. While we have closed two asset sale transactions, if we are unable to complete additional 
asset sales and conditions in the commodity markets continue to deteriorate, our liquidity and our ability to comply with the 
financial and other restrictive covenants contained in our debt agreements will be adversely affected. For a more complete discussion 
of factors that will affect our liquidity, see "Item 1A. Risk Factors—Risks Related to Our Business."

Opco’s revolving credit facility matures in October 2017 and NRP’s 9.125% Senior Notes mature in October 2018. We 
believe we need to significantly improve our leverage ratios prior to the maturity thereof in order to be able to refinance or restructure 
such debt. We remain committed to our strategic plan announced in April 2015 to improve our balance sheet and reduce leverage, 
and intend to take all necessary steps to execute on that plan, including through asset sales and other means.  Through February 
2016, we completed asset sales for $47.5 million in gross proceeds. However, we believe the deterioration in the commodity 
markets will continue to have a negative impact on our results of operations, which in turn may prevent us from achieving our 
leverage ratio goals. Traditionally, we have accessed the debt and equity capital markets on a regular basis and have relied on bank 
credit facilities to finance our business activities. However, due to the current commodity price environment and the state of the 
coal markets in particular, we believe we do not currently have the ability to access either the debt or equity capital markets. In 
addition, the volatility in the energy industry combined with recent bankruptcies and additional perceived credit risks of companies 
with coal and/or oil and gas exposure has resulted in traditional bank lenders seeking to reduce or eliminate their lending exposure 
to these companies. Accordingly, we will be required over the near term to run our business and service our debt through cash 
from operations or asset sales. In addition, we may be required to seek financing from non-traditional sources at unfavorable 
pricing or with unfavorable terms to run our business or to refinance or restructure our 2017 and 2018 debt maturities.

Generally, we satisfy our working capital requirements with cash generated from operations. Our current liabilities exceeded 
our current assets by approximately $15.5 million as of December 31, 2015, primarily due to $80.8 million in principal payments 

66

on Opco's senior notes due over the next year.  Excluding these principal payments, our current assets exceeded our current liabilities 
by approximately $65.5 million as of December 31, 2015.

(cid:35)(cid:65)(cid:80)(cid:73)(cid:84)(cid:65)(cid:76)(cid:0)(cid:37)(cid:88)(cid:80)(cid:69)(cid:78)(cid:68)(cid:73)(cid:84)(cid:85)(cid:82)(cid:69)(cid:83)

Our capital expenditures, other than for acquisitions, have historically been minimal. However, as a result of our Sanish Field 
oil and gas and VantaCore aggregates acquisitions in the fourth quarter of 2014, our operating capital expenditures have been 
higher in 2015. In response to the significant decline in oil price, we expect our oil and gas capital expenditures to decline significantly 
in 2016 as compared to 2015. A portion of the capital expenditures associated with both our oil and gas working interest business 
and VantaCore are maintenance capital expenditures, which are capital expenditures made to maintain the long-term production 
capacity of those businesses. We deduct maintenance capital expenditures when calculating distributable cash flow. Total capital 
expenditures  for  NRP  Oil  and  Gas  for  the  year  ended December 31,  2015 were  $30.5  million.  We  continue  to  monitor  the 
development programs of the operators of these properties and manage the capital expenditures associated with those properties 
by only participating in wells that are expected to provide acceptable economic returns. VantaCore’s capital expenditures for the 
year ended December 31, 2015 were $14.0 million.

(cid:35)(cid:65)(cid:83)(cid:72)(cid:0)(cid:38)(cid:76)(cid:79)(cid:87)(cid:83)

Net cash provided by operating activities for the years ended December 31, 2015, 2014 and 2013 was $203.4 million, $210.8 
million and $247.1 million, respectively. The majority of our cash provided by operations is generated from coal royalty revenues, 
our equity interest in Ciner Wyoming as well as VantaCore and oil and gas revenues.

Net cash used in investing activities for the years ended December 31, 2015, 2014 and 2013 was $30.3 million, $520.5 
million and $302.8 million, respectively. During 2015 our investing activities primarily consisted of well participation costs within 
our Oil and Gas segment and plant and equipment acquisitions within our VantaCore segment. These 2015 investing cash outflows 
were  partially  offset  by  various  asset  sales  including  an  aggregate  preparation  plant,  cell  phone  tower  lease  contracts  and 
condemnation payments within our Coal, Hard Mineral Royalty and Other segment as well as sales of mineral rights within our 
Oil and Gas segment. Our 2014 investing activities consisted of our Sanish Field and VantaCore acquisitions, the $5.0 million 
Illinois Basin coal acquisition completed in June 2014, as well as additional capital expenditures related to the participation in 
new wells in connection with our Williston Basin non-operated oil and gas working interest properties. Our 2013 investing activities 
consisted of the acquisitions of the interest in Ciner Wyoming and two acquisitions of non-operated working interests in oil and 
gas properties located in the Williston Basin.

Net cash flows used in financing activities for the year ended December 31, 2015 was $171.5 million and net cash flows 
provided by financing activities for the year ended December 31, 2014 was $267.3 million. Net cash flows used in financing 
activities for the year ended December 31, 2013 was $1.2 million. During 2015, 2014 and 2013 we had proceeds from loans of 
$100.0 million, $637.4 million and $567.0 million, respectively. During 2015, 2014 and 2013, these proceeds were offset by 
repayment of debt of $191.0 million, $328.0 million and $386.2 million, respectively. Also during 2015, 2014 and 2013 we paid 
cash distributions to our unitholders of $71.8 million, $162.0 million and $246.5 million, respectively. During 2014, we had net 
proceeds from an issuance of common units of $122.8 million, together with a capital contribution from our general partner of 
$3.2  million. During 2013, we had net  proceeds  from an issuance  of  common units of $74.7 million, together with a capital 
contribution from our general partner of $1.5 million.

(cid:35)(cid:65)(cid:80)(cid:73)(cid:84)(cid:65)(cid:76)(cid:0)(cid:50)(cid:69)(cid:83)(cid:79)(cid:85)(cid:82)(cid:67)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:47)(cid:66)(cid:76)(cid:73)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)

Indebtedness

As of December 31, 2015 and 2014, we had the following indebtedness (in thousands):

Current portion of long-term debt, net
Long-term debt and debt—affiliate, net
Total debt and debt—affiliate, net

December 31, 2015
80,983
$
1,304,013
1,384,996

$

December 31, 2014
80,983
$
1,394,240
1,475,223

$

We were and continue to be in compliance with the terms of the financial covenants contained in our debt agreements. 
Adjusted EBITDA as defined in "Item 6. Selected Financial Data—Non-GAAP Financial Measures—Adjusted EBITDA" differs 
67

from the EBITDDA definitions contained in our debt agreements. For additional information regarding our debt and the agreements 
governing our debt, including the covenants contained therein, see "Item 8. Financial Statements and Supplementary Data—Note 
10. Debt and Debt—Affiliate" in this Annual Report on Form 10-K.

Long-Term Contractual Obligations 

The following table reflects our long-term non-cancelable contractual obligations as of December 31, 2015 (in millions):

Total

2016

2017

2018

2019

2020

Thereafter

Payments Due by Period

Contractual Obligations
NRP:

Long-term debt principal payments
(including current maturities) (1)
Long-term debt interest payments (1)

NRP Oil and Gas:

$ 425.0
116.4

$

— $

38.8

—

— $ 425.0
38.8

38.8

$

— $
—

— $
—

—

—

85.0

—

—
—

—

Long-term debt principal payments (2)

85.0

Opco:

Long-term debt principal payments
(including current maturities) (3)
Long-term debt interest payments (4)
Rental leases (5)

Total

877.1
148.5
2.0
$ 1,654.0

81.0
33.3
0.7
$ 153.8

371.0
28.2
0.7
$ 438.7

81.0
23.2
0.6
$ 568.6

76.4
18.2
—
$ 179.6

$

54.9
14.2
—
69.1

212.8
31.4
—
244.2

$

(1)  The amounts indicated in the table include principal and interest due on NRP’s 9.125% senior notes.

(2)  Does not consider the impact of any repayments required as a result of reductions in the borrowing base of the facility.

(3)  The amounts indicated in the table include principal due on Opco’s senior notes, credit facility and utility local improvement 

obligation.

(4)  The amounts indicated in the table include interest due on Opco’s senior notes and utility local improvement obligation.

(5)  On January 1, 2009, Opco entered into a ten-year lease agreement for the rental of office space from Western Pocahontas 
Properties Limited Partnership for $0.6 million per year. In addition, BRP LLC ("BRP") leases office space for approximately 
$0.1 million per year through 2017. These rental obligations are included in the table above.

Anadarko Contingent Consideration Payment Claim

The purchase agreement for the acquisition of our interest in Ciner Wyoming, formerly OCI Wyoming, requires us to pay 
additional contingent consideration to Anadarko to the extent certain performance criteria described in the purchase agreement 
are met at Ciner Wyoming in any of the years 2013, 2014 or 2015. We paid $0.5 million and $3.8 million of consideration in the 
first quarter of 2014 and 2015, respectively, in satisfaction of our obligations under this agreement with respect to 2013 and 2014. 
As of December 31, 2015, we estimate, and have recorded $7.2 million as the amount that will be payable in the first quarter of 
2016 with respect to 2015. We have no obligation to pay contingent consideration with respect to any period after 2015.

In March 2014, Anadarko gave us written notice that it believed certain reorganization transactions conducted in 2013 within 
the OCI organization triggered an acceleration of our obligation to pay the additional contingent consideration in full and demanded 
immediate  payment  of  such  amount.  We  disagreed  with Anadarko’s  position  in  a  written  response  provided  to Anadarko  in 
April 2014. In April 2015, Anadarko sent a written request for additional information regarding the OCI reorganization and indicated 
that they are still considering this claim against us. We do not believe the reorganization transactions triggered an obligation to 
pay the additional contingent consideration. We responded in writing in May 2015, and we will continue to engage in discussions 
with Anadarko to resolve the issue if necessary. However, if Anadarko were to pursue and prevail on such a claim, we would be 
required to pay an amount to Anadarko in excess of the amounts already paid, together with the $7.2 million accrual described 
above, up to the maximum amount of the additional contingent consideration, minus a deductible. Under the purchase agreement, 
the maximum cumulative amount of additional contingent consideration is an amount equal to the net present value of $50.0 
million. Any additional amount paid by us would be considered to be additional acquisition consideration and added to Equity and 
other unconsolidated investments and would reduce our liquidity.

68

 
(cid:51)(cid:72)(cid:69)(cid:76)(cid:70)(cid:0)(cid:50)(cid:69)(cid:71)(cid:73)(cid:83)(cid:84)(cid:82)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:51)(cid:84)(cid:65)(cid:84)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)

In September 2015, we filed a registration statement on Form S-3 with the SEC that is available for registered offerings of 

common units.

Unrestricted Subsidiary Information

In February 2016, NRP designated NRP Oil and Gas as an Unrestricted Subsidiary for purposes of the Indenture. In addition, 
BRP LLC and its wholly owned subsidiary, Coval Leasing Company, LLC, are also Unrestricted Subsidiaries for purposes of the 
Indenture.  For more information regarding the financial condition and results of operations of NRP and its Restricted Subsidiaries 
for  purposes  of  the  Indenture  separate  from  NRP’s  Unrestricted  Subsidiaries  for  purposes  of  the  Indenture,  see  "Note  17. 
Supplementary Unrestricted Subsidiary Information" under the Notes to Consolidated Financial Statements included in "Item 8. 
Financial Statements and Supplementary Data."

Off-Balance Sheet Transactions

We do not have any off-balance sheet arrangements with unconsolidated entities or related parties and accordingly, there are 

no off-balance sheet risks to our liquidity and capital resources from unconsolidated entities.

Inflation

Inflation in the United States has been relatively low in recent years and did not have a material impact on operations for 

the years ended December 31, 2015, 2014 and 2013.

Environmental Regulation

For additional information on environmental regulation that may have a material impact on our business, see "—Executive 
Overview—Political, Legal and Regulatory Environment Affecting Our Coal Business" and "Item 1. Business—Regulation and 
Environmental Matters."

Related Party Transactions

The information required by this Item is included under "Item 8. Financial Statements and Supplementary Data—Note 12. 
Related Party Transactions" and "Item 13. Certain Relationships and Related Transactions, and Director Independence" in this 
Annual Report on Form 10-K and is incorporated by reference herein.

Summary of Critical Accounting Estimates

Preparation of the accompanying financial statements in conformity with accounting principles generally accepted in the 
United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in 
the  accompanying  Consolidated  Balance  Sheets  and  the  reported  amounts  of  revenues  and  expenses  in  the  accompanying 
Consolidated Statements of Comprehensive Income during the reporting period. See "Note 2. Summary of Significant Accounting 
Policies"  to  the  audited  consolidated  financial  statements  under  Item  8  of  this  Form  10-K  for  discussion  of  the  Partnership's 
significant accounting policies. The following critical accounting policies are affected by estimates and assumptions used in the 
preparation of Consolidated Financial Statements.

(cid:50)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:83)

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)     Coal and hard mineral royalty revenues are recognized on the basis of 
tons of mineral sold by our lessees and the corresponding revenue from those sales. Generally, the lessees make payments to us 
based on the greater of a percentage of the gross sales price or a fixed price per ton of mineral they sell. Processing fees are 
recognized on the basis of tons of material processed through the facilities by our lessees and the corresponding revenue from 
those sales. Generally, the lessees of the processing facilities make payments to us based on the greater of a percentage of the gross 
sales price or a fixed price per ton of material that is processed and sold from the facilities. The processing leases are structured 
in a manner so that the lessees are responsible for operating and maintenance expenses associated with the facilities. Other revenues 

69

include transportation and processing fees. Transportation fees are recognized on the basis of tons of material transported over the 
beltlines. Under the terms of the transportation contracts, we receive a fixed price per ton for all material transported on the beltlines. 

(cid:54)(cid:82)(cid:71)(cid:68)(cid:3)(cid:36)(cid:86)(cid:75)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)(cid:3)(cid:3)We account for non-marketable investments using the equity method of accounting if the investment 
gives us the ability to exercise significant influence over, but not control of, an investee. Significant influence generally exists if 
we have an ownership interest representing between 20% and 50% of the voting stock of the investee. We account for our investment 
in Ciner Wyoming using this method.

Under the equity method of accounting, investments are stated at initial cost and are adjusted for subsequent additional 
investments and the proportionate share of earnings or losses and distributions. The basis difference between the investment and 
the proportional share of the fair value of the underlying net assets of equity method investees is hypothetically allocated first to 
identified tangible assets and liabilities, then to finite-lived intangibles or indefinite-lived intangibles and the remaining balance 
is attributed to goodwill. The portion of the basis difference attributed to net tangible assets and finite-lived intangibles is amortized 
over its estimated useful life while indefinite-lived intangibles, if any, and goodwill are not amortized. The amortization of the 
basis difference is recorded as a reduction of earnings from the equity investment in the Consolidated Statements of Comprehensive 
Income.

Our carrying value in an equity method investee company is reflected in the caption "Equity and other unconsolidated 
investments" in our Consolidated Balance Sheets. Our adjusted share of the earnings or losses of the investee company is reflected 
in the Consolidated Statements of Comprehensive Income as revenues and other income under the caption ‘‘Equity and other 
unconsolidated investment income." These earnings are generated from natural resources, which are considered part of our core 
business activities consistent with its directly owned revenue generating activities. Investee earnings are adjusted to reflect the 
amortization of any difference between the cost basis of the equity investment and the proportionate share of the investee’s book 
value, which has been allocated to the fair value of net identified tangible and finite-lived intangible assets and amortized over the 
estimated lives of those assets.

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)     Revenues from the sale of aggregates, gravel, sand and asphalt are recorded based upon the transfer 
of product at delivery to customers, which generally occurs at the quarries or asphalt plants. Revenues from long-term construction 
contracts are recognized on the percentage-of-completion method, measured by the percentage of total costs incurred to date to 
the estimated total costs for each contract. That method is used since we consider total cost to be the best available measure of 
progress on the contracts. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses 
are determined. Changes in job performance, job conditions and estimated profitability, including those arising from final contract 
settlements, which result in revisions to job costs and profits are recognized in the period in which the revisions are determined. 
Contract costs include all direct job costs and those indirect costs related to contract performance, such as indirect labor, supplies, 
insurance, equipment maintenance and depreciation. General and administrative costs are charged to expense as incurred.

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86).     Oil and gas related revenues consist of revenues from our non-operated working interests, royalties 
and overriding royalties. Revenues related to our non-operated working interests in oil and gas assets are recognized on the basis 
of our net revenue interests in hydrocarbons produced. We also have capital expenditure and operating expenditure obligations 
associated with the non-operated working interests. Our revenues fluctuate based on changes in the market prices for oil and natural 
gas, the decline in production from producing wells, and other factors affecting the third-party oil and natural gas exploration and 
production companies that operate our wells, including the cost of development and production. Oil and gas royalty revenues are 
recognized on the basis of volume of hydrocarbons sold by lessees and the corresponding revenue from those sales. Also, included 
within oil and gas royalties are lease bonus payments, which are generally paid upon the execution of a lease.

(cid:36)(cid:69)(cid:70)(cid:69)(cid:82)(cid:82)(cid:69)(cid:68)(cid:0)(cid:50)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)

Most of our coal and aggregates lessees must make minimum annual or quarterly payments which are generally recoupable 
over  certain  time  periods. These  minimum  payments  are  recorded  as  deferred  revenue  when  received. The  deferred  revenue 
attributable to the minimum payment is recognized as revenue when the lessee recoups the minimum payment through production 
or in the period immediately following the expiration of the lessee’s ability to recoup the payments.

(cid:44)(cid:69)(cid:83)(cid:83)(cid:69)(cid:69)(cid:0)(cid:33)(cid:85)(cid:68)(cid:73)(cid:84)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:41)(cid:78)(cid:83)(cid:80)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)

We periodically audit lessee information by examining certain records and internal reports of our lessees. Our regional 
managers also perform periodic mine inspections to verify that the information that has been reported to us is accurate. The audit 

70

and inspection processes are designed to identify material variances from lease terms as well as differences between the information 
reported to us and the actual results from each property. Audits and inspections, however, are in periods subsequent to when the 
revenue is reported and any adjustment identified by these processes might be in a reporting period different from when the revenue 
was initially recorded. Typically there are no material adjustments from this process.

(cid:51)(cid:72)(cid:65)(cid:82)(cid:69)(cid:13)(cid:34)(cid:65)(cid:83)(cid:69)(cid:68)(cid:0)(cid:48)(cid:65)(cid:89)(cid:77)(cid:69)(cid:78)(cid:84)

We account for awards relating to our Long-Term Incentive Plan using the fair value method, which requires us to estimate 
the fair value of the grant, and charge or credit the estimated fair value to expense over the service or vesting period of the grant 
based on fluctuations in our common unit price. In addition, estimated forfeitures are included in the periodic computation of the 
fair value of the liability and the fair value is recalculated at each reporting date over the service or vesting period of the grant.

(cid:33)(cid:83)(cid:83)(cid:69)(cid:84)(cid:0)(cid:41)(cid:77)(cid:80)(cid:65)(cid:73)(cid:82)(cid:77)(cid:69)(cid:78)(cid:84)

We have developed procedures to periodically evaluate our long-lived assets for possible impairment. These procedures are 
performed throughout the year and are based on historic, current and future performance and are designed to be early warning 
tests. If an asset fails one of the early warning tests, additional evaluation is performed for that asset that considers both quantitative 
and qualitative information. A long-lived asset is deemed impaired when the future expected undiscounted cash flows from its use 
and disposition is less than the assets’ carrying value. Impairment is measured based on the estimated fair value, which is usually 
determined based upon the present value of the projected future cash flow compared to the assets’ carrying value. We believe our 
estimates of cash flows and discount rates are consistent with those of principal market participants. In addition to the evaluations 
discussed above, specific events such as a reduction in economically recoverable reserves or production ceasing on a property for 
an extended period may require a separate impairment evaluation be completed on a significant property. As a result of the continued 
weakness in the coal markets and the potential for further declines in oil and natural gas prices, we intend to closely monitor our 
coal and oil and gas assets, and the impairment evaluation process may be completed more frequently if deemed necessary. Future 
impairment analyses could result in downward adjustments to the carrying value of our assets. During 2015, we recorded impairment 
expense of $676.1 million on certain of our mineral rights within our Coal, Hard Mineral Royalty and Other and Oil and Gas 
segments as well as plant and equipment within our Coal, Hard Mineral Royalty and Other and VantaCore segments. For further 
discussion relating to our 2015 impairments see "Item 8. Financial Statements and Supplementary Data—Note 8. Minerals Rights" 
and "Item 8. Financial Statements and Supplementary Data—Note 7. Plant and Equipment" to the audited consolidated financial 
statements included elsewhere in this Annual Report on Form 10-K.

We evaluate our equity investments for impairment when events or changes in circumstances indicate, in management’s 
judgment,  that  the  carrying  value  of  such  investment  may  have  experienced  an  other-than-temporary  decline  in  value. When 
evidence of loss in value has occurred, management compares the estimated fair value of the investment to the carrying value of 
the  investment  to  determine  whether  impairment  has  occurred.  If  the  estimated  fair  value  is  less  than  the  carrying  value  and 
management considers the decline in value to be other than temporary, the excess of the carrying value over the estimated fair 
value is recognized in the financial statements as an impairment loss. The fair value of the impaired investment is based on quoted 
market prices, or upon the present value of expected cash flows using discount rates believed to be consistent with those used by 
principal market participants, plus market analysis of comparable assets owned by the investee, if appropriate.

In accordance with FASB accounting and disclosure guidance for goodwill, we test our recorded goodwill for impairment 
annually or more often if indicators of potential impairment exist, by determining if the carrying value of a reporting unit exceeds 
its estimated fair value. Factors that could trigger an interim impairment test include, but are not limited to, underperformance 
relative to historical or projected future operating results or significant changes in our overall business, industry, or economic 
trends. We recorded a $5.5 million impairment loss related to the VantaCore reporting unit for the year ended December 31, 2015.

(cid:34)(cid:85)(cid:83)(cid:73)(cid:78)(cid:69)(cid:83)(cid:83)(cid:0)(cid:35)(cid:79)(cid:77)(cid:66)(cid:73)(cid:78)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)

For purchase acquisitions accounted for as a business combination, we are required to record the assets acquired, including 
identified intangible assets and liabilities assumed at their fair value, which in many instances involves estimates based on third 
party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques.

(cid:48)(cid:82)(cid:79)(cid:86)(cid:69)(cid:68)(cid:0)(cid:47)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:65)(cid:83)(cid:0)(cid:50)(cid:69)(cid:83)(cid:69)(cid:82)(cid:86)(cid:69)(cid:83)

71

The Partnership utilizes Netherland Sewell, an independent reserve engineering firm, to estimate its proved oil and gas 
reserves according to the definition of proved reserves provided by the Securities and Exchange Commission and the Financial 
Accounting Standards Board (FASB). This definition includes oil, natural gas, and NGLs that geological and engineering data 
demonstrate  with  reasonable  certainty  to  be  economically  producible  in  future  periods  from  known  reservoirs  under  existing 
economic conditions, operating methods, government regulations, etc. (at prices and costs as of the date the estimates are made). 
Prices are calculated using the unweighted average of the first-day-of-the-month pricing and then adjusted for transportation and 
other  costs.  We  maintain  an  internal  staff  of  petroleum  engineers  and  geoscience  professionals  who  work  closely  with  our 
independent reserve engineers to ensure the integrity, accuracy and timeliness of data furnished to Netherland Sewell in their 
reserves estimation process. 

The Partnership’s estimates of proved reserves are made using available geological and reservoir data, as well as production 
performance data. These estimates are reviewed annually by Netherland Sewell and our internal staff of petroleum engineers and 
revised, either upward or downward, as warranted by additional data. Revisions are necessary due to changes in, among other 
things, reservoir performance, prices, economic conditions, and governmental restrictions, as well as changes in the expected 
recovery associated with infill drilling. Decreases in prices, for example, may cause a reduction in some proved reserves due to 
reaching economic limits at an earlier projected date. The quantities of estimated proved oil and gas reserves are a significant 
component of DD&A. A material adverse change in the estimated volumes of proved reserves could have a negative impact on 
DD&A and could result in property impairments. 

Recent Accounting Standards

For  a  discussion  of  recent  accounting  pronouncements,  see  the  applicable  section  of  "Item  8.  Financial  Statements  and 
Supplementary  Data—Note  2.  Summary  of  Significant Accounting  Policies"  to  the  audited  consolidated  financial  statements 
included elsewhere in this Annual Report on Form 10-K.

ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risk, which includes adverse changes in commodity prices and interest rates as discussed below:

Commodity Price Risk

We are dependent upon the effective marketing of the coal mined by our lessees. Our lessees sell the coal under various 
long-term and short-term contracts as well as on the spot market. We estimate that over 65% of our coal is currently sold by our 
lessees under coal supply contracts that have terms of one year or more. Current conditions in the coal industry may make it difficult 
for our lessees to extend existing contracts or enter into supply contracts with terms of one year or more. Our lessees’ failure to 
negotiate long-term contracts could adversely affect the stability and profitability of our lessees’ operations and adversely affect 
our coal royalty revenues. If more coal is sold on the spot market, coal royalty revenues may become more volatile due to fluctuations 
in spot coal prices.

We have market risk related to the prices for oil and natural gas, NGLs and condensate. Management expects energy prices 
to remain unpredictable and potentially volatile. As energy prices decline or rise significantly, revenues and cash flows are likewise 
affected. In addition, a non-cash write-down of the Partnership’s oil and gas properties may be required if commodity prices 
experience a significant decline.

We have market risk related to prices for our aggregates products. Aggregates prices are primarily driven by economic 

conditions in the local markets in which the products are sold.

The market price of soda ash directly affects the profitability of Ciner Wyoming’s operations. If the market price for soda 
ash declines, Ciner Wyoming’s sales will decrease. Historically, the global market and, to a lesser extent, the domestic market for 
soda ash have been volatile, and those markets are likely to remain volatile in the future.

Interest Rate Risk

Our exposure to changes in interest rates results from our borrowings under our revolving credit facility and term loan, which 
are subject to variable interest rates based upon LIBOR. At December 31, 2015, we had $375.0 million outstanding in variable 

72

interest rate debt. If interest rates were to increase by 1%, annual interest expense would increase approximately $3.8 million, 
assuming the same principal amount remained outstanding during the year.

73

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Ernst & Young LLP, independent registered public accounting firm
Report of Deloitte & Touche, LLP, independent registered public accounting firm
Consolidated Balance Sheets as of December 31, 2015 and 2014
Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2015, 2014 and 2013
Consolidated Statements of Partners’ Capital for the years ended December  31, 2015, 2014 and 2013
Consolidated Statements of Cash Flows for the years ended December 31, 2015, 2014 and 2013
Notes to Consolidated Financial Statements

Page
75
76
77
78
79
80
81

74

 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Partners of Natural Resource Partners L.P.

We have audited the accompanying consolidated balance sheets of Natural Resource Partners L.P. as of December 31, 2015 
and 2014, and the related consolidated statements of comprehensive income (loss), partners’ capital and cash flows for each of the 
three  years  in  the  period  ended  December 31,  2015.  These  financial  statements  are  the  responsibility  of  the  Partnership’s 
management. Our responsibility is to express an opinion on these financial statements based on our audits. We did not audit the 
financial statements of Ciner Wyoming LLC (Ciner Wyoming), a Limited Liability Company in which Natural Resource Partners 
L.P. owns a 49% interest. In the consolidated financial statements Natural Resource Partners L.P.’s investment in Ciner Wyoming 
is stated at $262 million and $264 million as of December 31, 2015 and 2014, respectively, and Natural Resource Partners L.P.'s 
equity in the net income of Ciner Wyoming is stated at $50 million, $41 million and $34 million for the three years in the period 
ended December 31, 2015, respectively. Those statements were audited by other auditors whose report has been furnished to us. 
Our opinion, insofar as it relates to the amounts included for Natural Resource Partners L.P., is based on the report of the other 
auditors.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and 
disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates 
made by management, as well as evaluating the overall financial statement presentation. We believe that our audits and the report 
of other auditors provide a reasonable basis for our opinion.

In our opinion, based on our audits and the report of other auditors, the financial statements referred to above present fairly, 
in all material respects, the consolidated financial position of Natural Resource Partners L.P. at December 31, 2015 and 2014, and 
the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2015, in 
conformity with U.S. generally accepted accounting principles.

The condensed consolidating balance sheets and statements of comprehensive income (loss) appearing in Note 17 of the 
consolidated financial statements have been subjected to audit procedures performed in conjunction with the audit of Natural 
Resource Partners L.P.’s consolidated financial statements.  Such information is the responsibility of the Partnership’s management.  
Our  audit  procedures  included  determining  whether  the  information  reconciles  to  the  financial  statements  or  the  underlying 
accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information.  
In our opinion, the information is fairly stated, in all material respects, in relation to the financial statements as a whole.  

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
Natural Resource Partners L.P.’s internal control over financial reporting as of December 31, 2015, based on criteria established 
in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(2013 framework), and our report dated March 11, 2016, expressed an unqualified opinion thereon.

    /s/    Ernst & Young LLP

Houston, Texas
March 11, 2016

75

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Board of Managers and Members of
Ciner Wyoming LLC
Atlanta, Georgia

We have audited the accompanying balance sheets of Ciner Wyoming LLC (the "Company") as of December 31, 2015 and 
2014 and the related statements of operations and comprehensive income, members’ equity, and cash flows for each of the three 
years in the period ended December 31, 2015, and the related notes to the financial statements. These financial statements are the 
responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on 
our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of 
its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis 
for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the 
effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also 
includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the 
accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement 
presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material respects, the financial position of the Company as of 
December 31, 2015 and 2014, and the results of its operations and its cash flows for each of the three years in the period ended 
December 31, 2015, in conformity with accounting principles generally accepted in the United States of America.

/s/    DELOITTE & TOUCHE LLP

Atlanta, Georgia
March 11, 2016

76

NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED BALANCE SHEETS
(In thousands) 

ASSETS

December 31, 2015

December 31, 2014

Current assets:

Cash and cash equivalents
Accounts receivable, net
Accounts receivable—affiliates
Inventory
Prepaid expenses and other
Total current assets

Land
Plant and equipment, net
Mineral rights, net
Intangible assets, net
Equity in unconsolidated investment
Long-term contracts receivable—affiliate
Goodwill
Other assets
Other assets—affiliate
Total assets

LIABILITIES AND CAPITAL

Current liabilities:

Accounts payable
Accounts payable—affiliates
Accrued liabilities
Current portion of long-term debt, net

Total current liabilities

Deferred revenue
Deferred revenue—affiliates
Long-term debt, net
Long-term debt, net—affiliate
Other non-current liabilities
Commitments and contingencies (see Note 14)
Partners’ capital:

Common unitholders’ interest (12.2 million units outstanding)
General partner’s interest
Accumulated other comprehensive loss

Total partners’ capital

Non-controlling interest
Total capital
Total liabilities and capital

$

$

$

$

$

$

$

51,773
50,167
6,864
7,835
4,490
121,129
25,022
61,239
1,094,027
56,927
261,942
47,359
—
15,306
1,124
1,684,075

8,465
1,464
45,735
80,983
136,647
80,812
82,853
1,284,083
19,930
6,808

79,094
(606)
(2,152)
76,336
(3,394)
72,942
1,684,075

$

50,076
66,455
9,494
5,814
4,279
136,118
25,243
60,093
1,781,852
60,733
264,020
50,008
52,012
14,645
—
2,444,724

22,465
950
43,533
80,983
147,931
73,207
87,053
1,374,336
19,904
22,138

709,019
12,245
(459)
720,805
(650)
720,155
2,444,724

The accompanying notes are an integral part of these consolidated financial statements.

77

NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(In thousands, except per unit data) 

Revenues and other income:

Coal, hard mineral royalty and other
Coal, hard mineral royalty and other—affiliates
VantaCore
Oil and gas
Equity in earnings of Ciner Wyoming
Total revenues and other income

Operating expenses:

Operating and maintenance expenses
Operating and maintenance expenses—affiliates, net
Depreciation, depletion and amortization
General and administrative
General and administrative—affiliates
Asset impairments

Total operating expenses

$

For the Years Ended December 31,

2015

2014

2013

$

156,638
89,715
139,013
53,565
49,918
488,849

155,959
16,031
100,828
7,036
5,312
681,594
966,760

$

172,160
84,559
42,051
59,566
41,416
399,752

83,433
10,770
79,876
7,287
3,258
26,209
210,833

213,825
93,026
—
17,080
34,186
358,117

33,211
8,821
64,377
11,452
3,286
734
121,881

Income (loss) from operations

(477,911)

188,919

236,236

Other income (expense)
Interest expense
Interest income

Other expense, net

Net income (loss)

Net income (loss) attributable to partners:

Limited partners
General partner

Basic and diluted net income (loss) per common unit

Weighted average number of common units outstanding

Net income (loss)
Add: comprehensive income (loss) from unconsolidated investment
and other
Comprehensive income (loss)

(93,827)
18
(93,809)

(80,185)
96
(80,089)

(64,396)
238
(64,158)

$

(571,720) $

108,830

$

172,078

(559,492)
(12,228)

106,653
2,177

168,636
3,442

(45.75) $

9.42

$

15.39

12,230

11,326

10,958

(571,720) $

108,830

$

172,078

(1,693)
(573,413) $

(81)
108,749

$

65
172,143

$

$

$

The accompanying notes are an integral part of these consolidated financial statements. 

78

 
 
NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
(In thousands) 

Common Unitholders

Units

Amounts

General
Partner

Accumulated
Other
Comprehensive
Income (Loss)

Partners'
Capital
Excluding
Non-
Controlling
Interest

Non-
Controlling
Interest

Total
Capital

Balance at December 31, 2012

10,603

$ 605,019

$

10,026

$

(443) $ 614,602

$

2,845

$ 617,447

Balance at December 31, 2013

10,981

$ 606,774

$

10,069

$

(378) $ 616,465

$

324

$ 616,789

Issuance of common units

Capital contribution

Cost associated with equity
transactions
Distributions to unitholders

Distributions to non-
controlling interests
Net income

Comprehensive income from
unconsolidated investment and
other

Issuance of common units

Issuance of common units for
acquisitions
Capital contribution

Cost associated with equity
transactions
Distributions to unitholders

Distributions to non-
controlling interests
Net income

Comprehensive loss from
unconsolidated investment and
other

378

75,000

—

(293)

—

1,531

—

(241,588)

(4,930)

—

168,636

—

3,442

—

—

1,006

127,202

243

31,604

—

—

—

3,240

(4,413)

—

(158,801)

(3,241)

—

106,653

—

2,177

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

65

75,000

1,531

(293)

(246,518)

—

—

—

—

75,000

1,531

(293)

(246,518)

—

(2,521)

(2,521)

172,078

—

172,078

65

—

65

—

—

—

—

—

—

—

127,202

31,604

3,240

(4,413)

(162,042)

—

108,830

—

—

—

—

—

127,202

31,604

3,240

(4,413)

(162,042)

(974)

—

(974)

108,830

—

—

(81)

(81)

—

(81)

Balance at December 31, 2014

12,230

$ 709,019

$

12,245

$

(459) $ 720,805

$

(650) $ 720,155

Cost associated with equity
transactions
Distributions to unitholders

Distributions to non-
controlling interests
Net loss

Non-cash contributions

Comprehensive loss from
unconsolidated investment and
other

—

—

—

—

—

—

(109)

—

(70,324)

(1,434)

—

—

(559,492)

(12,228)

—

—

811

—

—

—

—

—

—

(109)

(71,758)

—

—

(109)

(71,758)

—

(2,744)

(2,744)

(571,720)

811

(1,693)

(1,693)

—

—

—

(571,720)

811

(1,693)

Balance at December 31, 2015

12,230

$

79,094

$

(606) $

(2,152) $

76,336

$

(3,394) $

72,942

The accompanying notes are an integral part of these consolidated financial statements.

79

 
 
 
 
 
 
 
 
 
NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

For the Years Ended December 31,

2015

2014

2013

$

(571,720) $

108,830

$

172,078

Net cash provided by operating activities

203,424

210,755

Cash flows from operating activities:

Net income (loss)

Adjustments to reconcile net income (loss) to net cash provided by operating activities:

Asset impairment

Depreciation, depletion and amortization

Distributions from equity earnings from unconsolidated investments

Equity earnings from unconsolidated investment

Gain on reserve swap

Other, net

Other, net—affiliates

Change in operating assets and liabilities:

Accounts receivable

Accounts receivable—affiliates

Accounts payable

Accounts payable—affiliates
Accrued liabilities

Deferred revenue

Deferred revenue—affiliates

Accrued incentive plan expenses

Other items, net

Other items, net—affiliates

Cash flows from investing activities:

Acquisition of mineral rights

Acquisition of plant and equipment and other

Proceeds from sale of plant and equipment and other

Proceeds from sale of mineral rights

Acquisition of equity interests

Acquisition of aggregates business

Return of equity and other unconsolidated investments

Return of long-term contract receivables—affiliate

Net cash used in investing activities

Cash flows from financing activities:

Proceeds from loans

Proceeds from loans—affiliate

Proceeds from issuance of common units

Capital contribution by general partner

Repayments of loans

Distributions to partners

Distributions to non-controlling interest

Debt issue costs and other

Net cash provided by (used in) financing activities

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental cash flow information:

Cash paid during the period for interest

Non-cash investing activities:

Plant, equipment and mineral rights funded with accounts payable or accrued
liabilities

Units issued for acquisition of aggregate operations

Non-cash contingent consideration on equity investments

$

$

$

681,594

100,828

46,795

(49,918)

(9,290)

(1,295)

(287)

16,486

2,630

(3,775)

514
(4,676)

7,605

(4,200)

(7,023)

(1,030)

186

26,209

79,876

43,005

(41,416)

(5,690)

1,942

—

(8,685)

(1,828)

(2,408)

559
(1,821)

2,056

15,618

(5,265)

(47)

(180)

(40,679)

(10,175)

11,024

7,096

—

—

—

2,463

(30,271)

100,000

—

—

—

(190,983)

(71,758)

(2,744)

(5,971)

(171,456)

1,697

50,076

51,773

88,493

$

$

(356,026)

(2,454)

1,006

412

—

(168,978)

3,633

1,904

617,471

19,904

127,202

3,240

(327,983)

(162,042)

(974)

(9,507)

267,311

(42,437)

92,513

50,076

76,155

$

$

5,949

$

11,879

$

—

—

31,604

—

734

64,377

24,113

(34,186)

(8,149)

(8,721)

—

2,593

2,947

1,633

(566)
7,927

4,164

15,076

2,284

(516)

1,286

247,074

(72,000)

—

—

10,929

(293,085)

—

48,833

2,558

567,020

—

75,000

1,531

(386,230)

(246,518)

(2,521)

(9,502)

(1,220)

(56,911)

149,424

92,513

55,191

3,019

—

15,000

(520,503)

(302,765)

The accompanying notes are an integral part of these consolidated financial statements.

80

 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.    Organization and Nature of Operations

Natural Resource Partners L.P. (the "Partnership"), a Delaware limited partnership, was formed in April 2002. The general 
partner of the Partnership is NRP (GP) LP ("NRP GP"), a Delaware limited partnership, whose general partner is GP Natural 
Resource Partners LLC, a Delaware limited liability company. The Partnership engages principally in the business of owning, 
operating, managing and leasing a diversified portfolio of mineral properties in the United States, including interests in coal, trona 
and soda ash, oil and gas, construction aggregates, frac sand and other natural resources.  As used in these Notes to Consolidated  
Financial Statements, the terms "NRP," "we," "us" and "our" refer to Natural Resource Partners L.P. and its subsidiaries, unless 
otherwise stated or indicated by context.

The Partnership’s coal reserves are located in the three major U.S. coal-producing regions: Appalachia, the Illinois Basin 
and the Western United States, as well as lignite reserves in the Gulf Coast region. The Partnership does not operate any coal 
mines, but leases its coal reserves to experienced mine operators under long-term leases that grant the operators the right to mine 
and sell its reserves in exchange for royalty payments. The Partnership also owns and manages infrastructure assets that generate 
additional revenues, primarily in the Illinois Basin.

The Partnership owns or leases aggregates and industrial minerals located in a number of states across the country. The 
Partnership derives a small percentage of its aggregates and industrial mineral revenues by leasing its owned reserves to third party 
operators who mine and sell the reserves in exchange for royalty payments. However, the majority of the Partnership’s aggregates 
revenues come through its ownership of VantaCore Partners LLC ("VantaCore"), which was acquired in October 2014. VantaCore 
specializes in the construction materials industry and operates four hard rock quarries, six sand and gravel plants, two asphalt 
plants and two marine terminals. VantaCore’s current operations are located in Pennsylvania, West Virginia, Tennessee, Kentucky 
and Louisiana.

The Partnership owns a 49% non-controlling equity interest in Ciner Wyoming LLC ("Ciner Wyoming"), a trona ore mining 
operation and soda ash refinery in the Green River Basin, Wyoming. Ciner Resources LP, the Partnership’s operating partner, 
mines the trona, processes it into soda ash, and distributes the soda ash both domestically and internationally into the glass and 
chemicals industries. The Partnership receives regular quarterly distributions from this business, and records income in accordance 
with the equity method of accounting.

The Partnership also owns various interests in oil and gas properties that are located in the Williston Basin, the Appalachian 
Basin, Louisiana and Oklahoma. The Partnership’s interests in the Appalachian Basin, Louisiana and Oklahoma are minerals and 
royalty interests, while in the Williston Basin the Partnership owns non-operated working interests.

The Partnership’s operations are conducted through, and its operating assets are owned by, its subsidiaries. The Partnership 
owns its subsidiaries through two wholly owned operating companies: NRP (Operating) LLC ("NRP Opco") and NRP Oil and 
Gas LLC ("NRP Oil and Gas"). NRP Oil and Gas holds the Partnership's non operated oil and gas working interests in the Williston 
Basin. All  other  operations  of  the  Partnership,  including  other  oil  and  gas  assets,  are  held  by  NRP  Opco.  NRP  GP  has  sole 
responsibility for conducting the Partnership's business and for managing its operations. Because NRP GP is a limited partnership, 
its general partner, GP Natural Resource Partners LLC, conducts its business and operations, and the board of directors and officers 
of GP Natural Resource Partners LLC makes decisions on its behalf. Robertson Coal Management LLC, a limited liability company 
wholly owned by Corbin J. Robertson, Jr., owns all of the membership interest in GP Natural Resource Partners LLC. Mr. Robertson 
is entitled to nominate all ten of the directors to the board of directors of GP Natural Resource Partners LLC. Mr. Robertson has 
delegated the right to nominate two of the directors, one of whom must be independent, to Adena Minerals, LLC, an affiliate of 
Christopher Cline.

2.    Summary of Significant Accounting Policies

Basis of Presentation

The accompanying Consolidated Financial Statements of the Partnership have been prepared in accordance with generally 
accepted accounting principles in the United States of America ("GAAP"). The consolidated financial statements include the 
accounts of Natural Resource Partners L.P. and its wholly owned subsidiaries, as well as BRP LLC ("BRP"), a joint venture with 
International Paper Company controlled by the Partnership. The Partnership has an equity investment through which it is able to 

81

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

exercise significant influence over but does not control the investee and is not the primary beneficiary of the investee’s activities 
which is accounted for using the equity method. Intercompany transactions and balances have been eliminated.

Management’s Forecast, Strategic Plan and Going Concern Analysis

While NRP has a diversified portfolio of assets and a history and continued forecast of profitable operations with positive 
operating cash flows, its operating results and credit metrics continue to be impacted by demand challenges for coal and excess 
worldwide supply of oil and gas. In particular, as described in Note 10. Debt and Debt—Affiliate, NRP Oil and Gas and NRP Opco 
have  debt  agreements  that  contain  customary  financial  covenants,  including  maintenance  covenants,  and  other  covenants.  In 
addition, NRP has issued $425 million of 9.125% Senior Notes that are governed by an indenture ("the Indenture") containing 
customary incurrence-based financial covenants and other covenants, but not maintenance covenants. The following discussion 
presents management’s going concern analysis in light of management’s outlook and strategic plan to address its debt covenant 
compliance and maturities.

(cid:47)(cid:80)(cid:67)(cid:79)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:46)(cid:50)(cid:48)

As of December 31, 2015, Opco had $290.0 million of indebtedness outstanding under its revolving credit facility due 
October 2017 (the "Opco Credit Facility") and $585.9 million outstanding under several series of Private Placement Notes (the 
"Opco Private Placement Notes") (collectively referred to as the "Opco Debt agreements"). The maximum leverage ratio under 
the Opco Debt agreements is required to be below 4.0x through March 31, 2016. Commencing with respect to the period ended 
June 30, 2016, the maximum leverage ratio reduces to 3.75x and reduces again to 3.5x commencing with respect to the period 
ended June 30, 2017. In addition, the Opco Debt agreements contain certain additional customary negative covenants that, among 
other items, restrict Opco’s ability to incur additional debt, grant liens on its assets, make investments, sell assets and engage in 
business combinations.

As of December 31, 2015, Opco was in compliance with and we forecast that Opco will continue to remain in compliance 
through December 31, 2016 with the covenants contained in its debt agreements. In addition, we believe Opco has sufficient 
liquidity to make all regularly scheduled principal and interest payments through December 31, 2016. We are currently pursuing 
or considering a number of actions including (i) dispositions of assets, (ii) actively managing our debt capital structure through a 
number  of  potential  alternatives,  including  exchange  offers  and  non-traditional  debt  financing,  (iii)  minimizing  our  capital 
expenditures,  (iv)  obtaining  waivers  or  amendments  from  our  lenders,  (v)  effectively  managing  our  working  capital  and  (vi) 
improving our cash flows from operations. While we forecast that we will be in compliance with all of the covenants under the 
Opco  Debt  agreements  through  December  31,  2016,  our  forecast  is  sensitive  to  commodity  pricing  and  counterparty  risk. 
Accordingly, management intends to pursue one or more of the alternatives discussed above in order to mitigate the effects of 
further commodity price and market deterioration which could otherwise cause us to breach financial covenants under the Opco 
Debt agreements. Breaches of the Opco Debt agreement covenants that are not waived or cured, to the extent possible, would 
result in an event of default under the Opco Debt agreements, and if such debt is accelerated by the lenders thereunder, such 
acceleration would also result in a cross-default under the Indenture.

(cid:46)(cid:50)(cid:48)(cid:0)(cid:47)(cid:73)(cid:76)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:65)(cid:83)

NRP Oil and Gas had $85.0 million outstanding under its senior secured, reserve-based revolving credit facility (the "RBL 
Facility") as of December 31, 2015. The facility is secured by a first priority lien on substantially all of NRP Oil and Gas’s assets 
and is not guaranteed by NRP or any other subsidiary of NRP.  Due to the significant and sustained decline in oil prices since the 
end of 2014, management forecasts that NRP Oil and Gas may not be able to remain in compliance with the 3.5x leverage ratio 
as required in the RBL Facility during the next 12 months.  In addition, management expects that, due to current oil and gas prices, 
the next borrowing base redetermination under the RBL Facility that is scheduled to occur in May 2016 may result in a reduction 
of the borrowing base by an amount that would exceed NRP Oil and Gas’s ability to repay principal within the required time-
frame following such redetermination. In addition, the RBL Facility requires the entity to provide annual financial statements that 
include a report from its independent registered public accounting firm with an opinion that does not contain "a "going concern" 
or like qualification or exception." Any of these events would qualify as an event of default and would provide the RBL Facility 
lenders with the ability to accelerate the debt outstanding under the RBL Facility to the extent not waived or cured. While we are 
attempting  to  take  appropriate  mitigating  actions,  there  is  no  assurance  that  any  particular  actions  with  respect  to  amending, 
refinancing, extending the maturity or curing potential defaults in the RBL Facility will be sufficient, and we may be required to 
sell some or all of the assets of NRP Oil and Gas, raise new equity capital at NRP Oil and Gas or pursue restructuring alternatives. 
As a result, we believe there is substantial doubt about the ability of NRP Oil and Gas to continue as a going concern through 

82

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

December 31, 2016. As we were in compliance with all covenants contained in the RBL Facility throughout 2015 and at December 
31, 2015, we have classified this debt as non-current in accordance with its terms.

An event of default under the RBL facility and subsequent acceleration of that debt by the lenders thereunder would not 
result in a cross-default under the Indenture. NRP Oil and Gas is designated as an "Unrestricted Subsidiary" for purposes of the 
Indenture, which prevents an event of default under the RBL Facility and subsequent acceleration of that debt from triggering an 
event of default under the Indenture.  In addition, there are no cross-defaults under the Opco Debt agreements as a result of a 
default under the RBL Facility.  As a result, there would be no default or acceleration of indebtedness under the Indenture or under 
the Opco Debt agreements in the event NRP Oil and Gas is in default under its RBL Facility.

Recasting of Certain Prior Period Information

Due to the acquisitions that diversified our natural resource asset base, effective for the quarter ended December 31, 2015, 
management revised the Partnership's operating segments to align with its management structure and organizational responsibilities 
and revised the information that its chief operating decision maker regularly reviews for purposes of allocating resources and 
assessing performance. As a result, effective for the quarter ended December 31, 2015, we report our financial performance based 
on new segments as described in "Note 3. Segment Information". We recast certain prior period amounts to conform to the way 
we internally manage and monitor segment performance. This change had no impact on the Partnership's consolidated financial 
position, net income (loss) or cash flows. In addition, certain reclassifications have been made to prior period amounts to conform 
to the current period financial statement presentation. Prior year general and administrative charges that were allocated to the 
operating segments have been reclassified to Operating and maintenance expenses and Operating and maintenance expenses—
affiliates on the Consolidated Statements of Comprehensive Income. In our opinion, all adjustments, consisting only of normal 
recurring adjustments necessary for a fair presentation, have been included.

Reverse Unit Split

On January 26, 2016, the board of directors of our general partner approved a 1-for-10 reverse split on our common units, 
effective following market close on February 17, 2016. Pursuant to the authorization provided, the Partnership completed the 1-
for-10 reverse unit split and its common units began trading on a reverse unit split-adjusted basis on the New York Stock Exchange 
on February 18, 2016. As a result of the reverse unit split, every 10 outstanding common units were combined into one common 
unit. The reverse unit split reduced the number of common units outstanding from 122.3 million units to approximately 12.2 
million units. All units and per unit data included in these consolidated financial statements have been retroactively restated to 
reflect the reverse unit split.

Use of Estimates

Preparation of the accompanying financial statements in conformity with accounting principles generally accepted in the 
United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in 
the  accompanying  Consolidated  Balance  Sheets  and  the  reported  amounts  of  revenues  and  expenses  in  the  accompanying 
Consolidated Statements of Comprehensive Income during the reporting period. Actual results could differ from those estimates.

Business Combinations

For purchase acquisitions accounted for as business combinations, the Partnership is required to record the assets acquired, 
including identified intangible assets and liabilities assumed at their fair value, which in many instances involves estimates based 
on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation 
techniques.

Out-of-Period Adjustment

In March 2015, the Partnership recorded an out-of-period adjustment to correct an error in depletion expense related to its 
oil and gas royalty interests owned by BRP, in which the Partnership owns a 51% interest. Depletion expense for the year ended 
December 31, 2015 includes a credit of $3.8 million to adjust the impact of depletion expense recorded in prior periods. After 
evaluating the quantitative and qualitative aspects of the error and the out-of-period adjustment to the Partnership’s financial results, 
management determined the misstatement and the out-of-period adjustment are not material to the prior period financial statements.

83

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Fair Value

The Partnership discloses certain assets and liabilities using fair value as defined by authoritative guidance. Fair value is 
defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market 
participants at the measurement date. See "Note 11. Fair Value Measurements."

There are three levels of inputs that may be used to measure fair value:

•  Level 1—Quoted prices in active markets for identical assets or liabilities.

•  Level 2—Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices 
in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for 
substantially the full term of the assets or liabilities.

•  Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value 
of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using 
pricing  models,  discounted  cash  flow  methodologies,  or  similar  techniques,  as  well  as  instruments  for  which  the 
determination of fair value requires significant management judgment or estimation.

Cash and Cash Equivalents

The Partnership considers all highly liquid short-term investments with an original maturity of three months or less to be 

cash equivalents.

Accounts Receivable

Accounts receivable from the Partnership’s lessees and customers do not bear interest. Receivables are recorded net of the 
allowance for doubtful accounts in the accompanying Consolidated Balance Sheets. The Partnership evaluates the collectability 
of its accounts receivable based on a combination of factors. The Partnership regularly analyzes its accounts receivable and when 
it becomes aware of a specific lessee’s or customer’s inability to meet its financial obligations to the Partnership, such as in the 
case of bankruptcy filings or deterioration in the lessee’s or customer’s operating results or financial position, the Partnership 
records a specific reserve for bad debt to reduce the related receivable to the amount it reasonably believes is collectible. The 
reserve is recognized as a reduction in the accounts receivable and an increase in operating and maintenance expenses or operating 
and  maintenance  expenses—affiliates. Accounts  are  charged  off  when  collection  efforts  are  complete  and  future  recovery  is 
doubtful. The allowance for doubtful accounts included in the Partnership's net accounts receivable balance (including affiliates) 
was $5.3 million and $0.7 million at December 31, 2015 and December 31, 2014, respectively. A significant amount of the change 
to the Partnership's allowance for doubtful accounts during 2015 relates to new allowances for doubtful coal-related receivables.  

Inventory

Inventories are stated at the lower of cost or market. The cost of aggregates and asphalt components such as stone, sand, and 
recycled and liquid asphalt is determined by the first-in, first-out (FIFO) method. Cost includes all direct materials, direct labor 
and related production overheads based on normal operating capacity. The cost of supplies inventory is determined by the average 
cost method and includes operating and maintenance supplies to be used in the Partnership’s aggregates operations.

Plant and Equipment

Plant and equipment is recorded at its original cost of construction or, upon acquisition, at fair value of the asset acquired 
and consists of coal preparation plants, related coal handling facilities, and other coal and aggregate processing and transportation 
infrastructure. Expenditures for new facilities and expenditures that substantially increase the useful life of property, including 
interest during construction, are capitalized and reported in the Consolidated Statements of Cash Flows. These assets are recorded 
at cost and are depreciated on a straight-line basis over their useful lives generally as follows: 

Buildings and improvements
Machinery and equipment
Leasehold improvements

84

Years

20 to 40
5 to 12
Life of Lease

 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The  Partnership  begins  capitalizing  mine  development  costs  at  its  aggregates  operations  at  a  point  when  reserves  are 
determined to be proven or probable, economically mineable and when demand supports investment in the market. Capitalization 
of these costs ceases when production commences. Mine development costs are amortized based on production over the estimated 
life of mineral reserves and amortization is included as a component of depreciation expense.

Mineral Rights

Mineral rights owned and leased are recorded at its original cost of construction or, upon acquisition, at fair value of the 
assets acquired. Coal and aggregate mineral rights are depleted on a unit-of-production basis by lease, based upon minerals mined 
in relation to the net cost of the mineral properties and estimated proven and probable tonnage therein. The Partnership owns 
royalty and non-operated working interests in oil and natural gas reserves, all of which are located in the U.S. The Partnership 
does not determine whether or when to develop reserves. The Partnership uses the successful efforts method to account for its 
working interest in oil and gas properties. Oil and gas non-operated working interests are depleted on a unit-of-production basis. 
The depletion rate is adjusted annually based upon the amount of remaining reserves as determined by independent third party 
petroleum engineers. Oil and gas royalty interests are depleted on a straight-line basis over 30 years or the life of the asset, whichever 
is shorter.

Intangible Assets

The Partnership’s intangible assets consist primarily of contracts that at acquisition were more favorable for the Partnership 
than prevailing market rates, known as above-market contracts. The estimated fair values of the above-market rate contracts are 
determined based on the present value of future cash flow projections related to the underlying assets acquired. Intangible assets 
are amortized on a unit-of-production basis except that a minimum amortization is calculated on a straight-line basis for temporarily 
idled assets.

Asset Impairment

We have developed procedures to periodically evaluate our long-lived assets for possible impairment. These procedures are 
performed throughout the year and are based on historic, current and future performance and are designed to be early warning 
tests. If an asset fails one of the early warning tests, additional evaluation is performed for that asset that considers both quantitative 
and qualitative information. A long-lived asset is deemed impaired when the future expected undiscounted cash flows from its use 
and disposition is less than the assets’ carrying value. Impairment is measured based on the estimated fair value, which is usually 
determined based upon the present value of the projected future cash flow compared to the assets’ carrying value. We believe our 
estimates of cash flows and discount rates are consistent with those of principal market participants. In addition to the evaluations 
discussed above, specific events such as a reduction in economically recoverable reserves or production ceasing on a property for 
an extended period may require a separate impairment evaluation be completed on a significant property. As a result of the continued 
weakness in the coal markets and the potential for further declines in oil and natural gas prices, we intend to closely monitor our 
coal and oil and gas assets, and the impairment evaluation process may be completed more frequently if deemed necessary. Future 
impairment analyses could result in downward adjustments to the carrying value of our assets. During 2015, we recorded impairment 
expense of $676.1 million on certain of our mineral rights within our Coal, Hard Mineral Royalty and Other and Oil and Gas 
segments as well as plant and equipment within our Coal, Hard Mineral Royalty and Other and VantaCore segments. 

We evaluate our equity investments for impairment when events or changes in circumstances indicate, in management’s 
judgment,  that  the  carrying  value  of  such  investment  may  have  experienced  an  other-than-temporary  decline  in  value. When 
evidence of loss in value has occurred, management compares the estimated fair value of the investment to the carrying value of 
the  investment  to  determine  whether  impairment  has  occurred.  If  the  estimated  fair  value  is  less  than  the  carrying  value  and 
management considers the decline in value to be other than temporary, the excess of the carrying value over the estimated fair 
value is recognized in the financial statements as an impairment loss. The fair value of the impaired investment is based on quoted 
market prices, or upon the present value of expected cash flows using discount rates believed to be consistent with those used by 
principal market participants, plus market analysis of comparable assets owned by the investee, if appropriate.

In accordance with FASB accounting and disclosure guidance for goodwill, we test our recorded goodwill for impairment 
annually or more often if indicators of potential impairment exist, by determining if the carrying value of a reporting unit exceeds 
its estimated fair value. Factors that could trigger an interim impairment test include, but are not limited to, underperformance 

85

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

relative to historical or projected future operating results or significant changes in our overall business, industry, or economic 
trends. We recorded a $5.5 million impairment loss related to the VantaCore reporting unit for the year ended December 31, 2015.

Revenue Recognition

(cid:38)(cid:82)(cid:68)(cid:79)(cid:15)(cid:3)(cid:43)(cid:68)(cid:85)(cid:71)(cid:3)(cid:48)(cid:76)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:53)(cid:82)(cid:92)(cid:68)(cid:79)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)     Coal and hard mineral royalty revenues are recognized on the basis of 
tons of mineral sold by our lessees and the corresponding revenue from those sales. Generally, the lessees make payments to us 
based on the greater of a percentage of the gross sales price or a fixed price per ton of mineral they sell. Processing fees are 
recognized on the basis of tons of material processed through the facilities by our lessees and the corresponding revenue from 
those sales. Generally, the lessees of the processing facilities make payments to us based on the greater of a percentage of the gross 
sales price or a fixed price per ton of material that is processed and sold from the facilities. The processing leases are structured 
in a manner so that the lessees are responsible for operating and maintenance expenses associated with the facilities. Other revenues 
include transportation and processing fees. Transportation fees are recognized on the basis of tons of material transported over the 
beltlines. Under the terms of the transportation contracts, we receive a fixed price per ton for all material transported on the beltlines. 

Most of the Partnership’s coal and aggregates lessees must make minimum annual or quarterly payments which are generally 
recoupable over certain time periods. These minimum payments are recorded as deferred revenue when received. The deferred 
revenue attributable to the minimum payment is recognized as revenue based upon the underlying mineral lease when the lessee 
recoups the minimum payment through production or in the period immediately following the expiration of the lessee’s ability to 
recoup the payments.

(cid:54)(cid:82)(cid:71)(cid:68)(cid:3)(cid:36)(cid:86)(cid:75)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)(cid:3)(cid:3)(cid:3)We account for non-marketable investments using the equity method of accounting if the investment 
gives us the ability to exercise significant influence over, but not control of, an investee. Significant influence generally exists if 
we have an ownership interest representing between 20% and 50% of the voting stock of the investee. We account for our investment 
in Ciner Wyoming using this method.

Under the equity method of accounting, investments are stated at initial cost and are adjusted for subsequent additional 
investments and the proportionate share of earnings or losses and distributions. The basis difference between the investment and 
the proportional share of the fair value of the underlying net assets of equity method investees is hypothetically allocated first to 
identified tangible assets and liabilities, then to finite-lived intangibles or indefinite-lived intangibles and the balance is attributed 
to goodwill. The portion of the basis difference attributed to net tangible assets and finite-lived intangibles is amortized over its 
estimated  useful  life  while  indefinite-lived  intangibles,  if  any,  and  goodwill  are  not  amortized. The  amortization  of  the  basis 
difference is recorded as a reduction of earnings from the equity investment in the Consolidated Statements of Comprehensive 
Income.

Our carrying value in Ciner Wyoming is reflected in the caption "Equity in unconsolidated investments" in our Consolidated 
Balance Sheets. Our adjusted share of the earnings or losses of Ciner Wyoming is reflected in the Consolidated Statements of 
Comprehensive Income as revenues and other income under the caption ‘‘Equity in earnings of Ciner Wyoming." These earnings 
are generated from natural resources, which are considered part of our core business activities consistent with its directly owned 
revenue generating activities. Investee earnings are adjusted to reflect the amortization of any difference between the cost basis 
of the equity investment and the proportionate share of the investee’s book value, which has been allocated to the fair value of net 
identified tangible and finite-lived intangible assets and amortized over the estimated lives of those assets.

(cid:57)(cid:68)(cid:81)(cid:87)(cid:68)(cid:38)(cid:82)(cid:85)(cid:72)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86)(cid:17)     Revenues from the sale of aggregates, gravel, sand and asphalt are recorded based upon the transfer 
of product at delivery to customers, which generally occurs at the quarries or asphalt plants. Revenues from long-term construction 
contracts are recognized on the percentage-of-completion method, measured by the percentage of total costs incurred to date to 
the estimated total costs for each contract. That method is used since we consider total cost to be the best available measure of 
progress on the contracts. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses 
are determined. Changes in job performance, job conditions and estimated profitability, including those arising from final contract 
settlements, which result in revisions to job costs and profits are recognized in the period in which the revisions are determined. 
Contract costs include all direct job costs and those indirect costs related to contract performance, such as indirect labor, supplies, 
insurance, equipment maintenance and depreciation. General and administrative costs are charged to expense as incurred.

(cid:50)(cid:76)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:42)(cid:68)(cid:86)(cid:3)(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:86).     Oil and gas related revenues consist of revenues from our non-operated working interests, royalties 
and overriding royalties. Revenues related to our non-operated working interests in oil and gas assets are recognized on the basis 
of our net revenue interests in hydrocarbons produced. Our revenues fluctuate based on changes in the market prices for oil and 

86

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

natural gas, the decline in production from producing wells, and other factors affecting the third-party oil and natural gas exploration 
and production companies that operate our wells, including the cost of development and production. Oil and gas royalty revenues 
are recognized on the basis of volume of hydrocarbons sold by lessees and the corresponding revenue from those sales. Also, 
included within oil and gas royalties are lease bonus payments, which are generally paid upon the execution of a lease.

Property Taxes

The Partnership is responsible for paying property taxes on the properties it owns. Typically, the lessees are contractually 
responsible for reimbursing the Partnership for property taxes on the leased properties. The payment of and reimbursement of 
property  taxes  is  included  in  Coal,  Hard  Mineral  Royalty  and  Other  revenues  and  in  Operating  and  maintenance  expenses, 
respectively, in the Consolidated Statements of Comprehensive Income.

Transportation Revenue and Expense

The Company records transportation revenue and pays transportation costs to a Foresight affiliate to operate equipment on 
behalf of the Company. The revenue and expenses related to these transactions are recorded as Coal, Hard Mineral Royalty and 
Other—affiliates revenues and Operating and maintenance expenses—affiliates in the Consolidated Statements of Comprehensive 
Income. Shipping and handling costs invoiced to aggregate customers and paid to third-party carriers are recorded as Coal, Hard 
Mineral Royalty and Other revenues and Operating and maintenance expenses in the Consolidated Statements of Comprehensive 
Income.

Asset Retirement Costs and Obligations

The Partnership accrues for mine closure, reclamation as well as plugging and abandonment of its oil and gas non-operated 
working interests in accordance with authoritative guidance related to accounting for asset retirement costs and obligations. This 
guidance requires the fair value of an obligation be recognized in the period it is incurred, if the fair value can be reasonably 
estimated. The Partnership recognizes an asset and liability related to the present value of future estimated costs. Depreciation or 
depletion of the capitalized asset retirement cost is determined based upon the underlying asset being retired in the future. Accretion 
of the asset retirement obligation is recognized over time and will increase as the obligation becomes more near term. It is reasonably 
possible that the estimates related to asset retirement and environmental obligations may change in the future. See "Note 13. Asset 
Retirement Obligations."

Unit-Based Compensation

We have awarded unit-based compensation in the form of phantom units that are more fully described in Note 16. Long-

Term Incentive Plans." A summary of our accounting policy for unit-based awards follows.

The Partnership accounts for awards relating to its Long-Term Incentive Plan using the fair value method, which requires 
the Partnership to estimate the fair value of the grant, and charge or credit the estimated fair value to expense over the requisite 
service period of the grant based on fluctuations in the Partnership’s common unit price. In addition, estimated forfeitures are 
included in the periodic computation of the fair value of the liability and the fair value is recalculated at each reporting date over 
the service or vesting period of the grant. See "Note 16. Long-Term Incentive Plans."

Deferred Financing Costs

Deferred financing costs consist of legal and other costs related to the issuance of the Partnership’s long-term debt. These 
costs are amortized over the term of the debt.  Deferred financing costs are included in Other Assets on the Partnership's Consolidated 
Balance Sheets.

Income Taxes

No provision for income taxes related to the operations of the Partnership has been included in the accompanying financial 
statements because, as a partnership, it is not subject to federal or material state income taxes and the tax effect of its activities 
accrues to the unitholders. Net income for financial statement purposes may differ significantly from taxable income reportable 
to unitholders as a result of differences between the tax bases and financial reporting bases of assets and liabilities. In the event 

87

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

of an examination of the Partnership’s tax return, the tax liability of the partners could be changed if an adjustment in the Partnership’s 
income is ultimately sustained by the taxing authorities.

Lessee Audits and Inspections

The Partnership periodically audits lessee information by examining certain records and internal reports of its lessees. The 
Partnership’s regional managers also perform periodic mine inspections to verify that the information that has been reported to 
the Partnership is accurate. The audit and inspection processes are designed to identify material variances from lease terms as well 
as differences between the information reported to the Partnership and the actual results from each property. Audits and inspections, 
however, are in periods subsequent to when the revenue is reported and any adjustment identified by these processes might be in 
a reporting period different from when the revenue was initially recorded. Typically there are no material adjustments from this 
process.

Recently Issued Accounting Standards

In May 2014, the Financial Accounting Standards Board ("FASB") amended its guidance on revenue recognition. The core 
principle of this amendment is that an entity should recognize revenue to depict the transfer of promised goods or services to 
customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or 
services. This guidance is effective for annual reporting periods beginning after December 15, 2017, including interim periods 
within that reporting period. Early adoption is permitted for reporting periods beginning after December 15, 2016, including interim 
reporting periods within that period. This guidance can be adopted either retrospectively to each prior reporting period presented 
or as a cumulative-effect adjustment as of the date of adoption. The Partnership is currently evaluating the impact of the provisions 
of this guidance on its consolidated financial position, results of operations and cash flows.

In August 2014, the FASB issued guidance on management’s responsibility to evaluate whether there is substantial doubt 
about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The guidance is effective for 
interim and annual periods ending after December 15, 2016 and early adoption is permitted. The new guidance will require a 
formal assessment of going concern by management based on criteria prescribed in the new guidance, but will not impact the 
Partnership's financial position or results of operations. The Partnership is reviewing its policies and processes to ensure compliance 
with this new guidance.

In April 2015, the FASB issued authoritative guidance which intended to simplify the presentation of debt issuance costs in 
financial statements. This guidance requires an entity to present such costs in the balance sheet as a direct deduction from the 
related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. This guidance 
is effective for annual reporting periods beginning after December 15, 2016. Early adoption is permitted. This guidance will be 
applied retrospectively to each prior period presented. The Partnership is currently evaluating the impact of the provisions of this 
guidance on its consolidated balance sheets.

In July 2015, the FASB issued authoritative guidance which intended to simplify the measurement of inventory. This guidance 
requires an entity to measure inventory at the lower of cost or net realizable value. The amendments do not apply to inventory that 
is measured using last-in, first-out or the retail inventory method. This guidance is effective for annual reporting periods beginning 
after December 15, 2016, including interim periods within that reporting period, with early adoption permitted. This guidance 
should be applied on a prospective basis. The Partnership is currently evaluating the impact of the provisions of this guidance on 
its consolidated financial position, results of operations and cash flows.

In February 2016, FASB issued authoritative lease guidance that establishes a right-of-use ("ROU") model that requires a 
lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will 
be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. 
The main difference between the current requirement under GAAP and the ROU model is the recognition of lease assets and lease 
liabilities by lessees for those leases classified as operating leases. The new standard is effective for fiscal years beginning after 
December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required 
for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented 
in the financial statements, with certain practical expedients available. The Partnership is currently evaluating the impact of the 
provisions of this guidance on its consolidated financial position, results of operations and cash flows.

88

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

3.    Segment Information

The Partnership's segments are strategic business units that offer products and services to different customer segments in 

different geographies within the U.S. and that are managed accordingly. NRP has the following four operating segments: 

Coal, Hard Mineral Royalty and Other—consists primarily of coal royalty, coal related transportation and processing 
assets, aggregate and industrial minerals royalty assets and timber. Our coal reserves are primarily located in Appalachia, the 
Illinois Basin and the Western United States. Our aggregates and industrial minerals are located in a number of states across the 
United States.

Soda Ash—consists of the Partnership's 49% non-controlling equity interest in a trona ore mining operation and soda ash 
refinery in the Green River Basin, Wyoming. Ciner Resources LP, our operating partner, mines the trona, processes it into soda 
ash, and distributes the soda ash both domestically and internationally into the glass and chemicals industries. We receive regular 
quarterly distributions from this business. 

VantaCore—consists of our construction materials business acquired in October 2014 that operates hard rock quarries, an 
underground limestone mine, sand and gravel plants, asphalt plants and marine terminals. VantaCore operates in Pennsylvania, 
West Virginia, Tennessee, Kentucky and Louisiana.

Oil and Gas—consists of our non-operated working interests, royalty interests and overriding royalty interests in oil and 
natural gas properties. Our primary interests in oil and natural gas producing properties are non-operated working interests located 
in the Williston Basin in North Dakota and Montana. We also own fee mineral, royalty or overriding royalty interests in oil and 
gas properties in several other regions, including the Appalachian Basin, Oklahoma and Louisiana.

Direct segment costs and certain costs incurred at a corporate level that are identifiable and that benefit the Partnership's 
segments are allocated to the operating segments. These allocated costs include costs of: taxes, legal, information technology and 
shared facilities services and are included in Operating and maintenance expenses and Operating and maintenance expenses—
affiliates on the Consolidated Statements of Comprehensive Income. Prior year general and administrative charges that are allocated 
to the operating segments have been reclassified to operating and maintenance expenses. Intersegment sales are at prices that 
approximate market.

In reconciling items to consolidated operating income, Corporate and Financing includes functional corporate departments 
that do not earn revenues. Costs incurred by these departments include corporate headquarters and overhead,  financing, centralized 
treasury and accounting and other corporate-level activity not specifically allocated to a segment. 

89

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The following table summarizes certain financial information for each of the Partnership's operating segments (in thousands):

For the Year Ended

December 31, 2015

Operating Segments

Coal, Hard
Mineral
Royalty and
Other

Soda Ash

VantaCore

Oil and Gas

Corporate
and
Financing

Total

Revenues (including affiliates)

$ 246,353

$

49,918

Intersegment revenues (expenses)

Depreciation, depletion and amortization

Asset impairment
Interest expense, net

Net income (loss)

Capital expenditures

Total assets at December 31, 2015

21

44,478

307,800

—

—

—

—

—

(138,388)

49,918

428

—

1,047,922

261,942

$ 139,013
(21)
15,578

6,218

—

272

14,039

200,348

$

53,565

$

— $ 488,849

—

40,772

367,576

—
(377,365)
30,457

158,862

—

—

—
(93,809)
(106,157)
—

—

100,828

681,594
(93,809)
(571,720)
44,924

15,001

1,684,075

December 31, 2014

Revenues (including affiliates)

$ 256,719

$

41,416

$

42,051

$

59,566

$

— $ 399,752

Depreciation, depletion and amortization

Asset impairment
Interest expense, net

Net income (loss)

Capital expenditures

52,645

26,209

—

143,678

5,351

—

—

—

41,416

—

Total assets at December 31, 2014

1,403,762

264,020

3,296

23,935

—

—

32

171,116

219,658

—

—

14,338

359,851

540,713

—

—
(80,089)
(90,634)
—

79,876

26,209
(80,089)
108,830

536,318

16,571

2,444,724

December 31, 2013

Revenues (including affiliates)

$ 306,851

$

34,186

$

— $

17,080

$

— $ 358,117

Depreciation, depletion and amortization

58,502

Asset impairment
Interest expense, net

Net income (loss)
Capital expenditures

Total assets at December 31, 2013

734

—

211,590
—

1,520,428

—

—

—

34,186
293,085

269,338

—

—

—

—
—

—

5,875

—

—

5,198
75,019

—

—
(64,158)
(78,896)
—

64,377

734
(64,158)
172,078
368,104

189,211

12,879

1,991,856

4.    Acquisitions

VantaCore Acquisition

On October 1, 2014, the Partnership continued its effort to own a more diversified portfolio of natural resources by completing 
its acquisition of VantaCore for $200.6 million in cash and common units. At the time of acquisition, VantaCore operated three
hard rock quarries, six sand and gravel plants, two asphalt plants, one underground limestone mine and one marine terminal. 
VantaCore is headquartered in Philadelphia, Pennsylvania and its current operations are located in Pennsylvania, West Virginia, 
Tennessee, Kentucky and Louisiana. This acquisition aligned the Partnership’s effort to own a more diversified portfolio of natural 
resources.

The  Partnership  accounted  for  the  transaction  as  a  business  combination  under  the  acquisition  method  of  accounting. 
Accordingly, the Partnership conducted assessments of net assets acquired and recognized amounts for identifiable assets acquired 
and liabilities assumed at their estimated fair values on the acquisition date, while transaction and integration costs associated with 

90

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

the acquisitions were expensed as incurred. The fair value of these assets and liabilities was estimated using a discounted cash 
flow technique with significant inputs including future production volumes, aggregate sales prices, reserves and operating costs 
that  are  not  observable  in  the  market  and  thus  represents  a  Level  3  fair  value  measurement. The  results  of  operations  of  the 
acquisition have been included in our consolidated financial statements since the acquisition date.

In the first quarter 2015, the purchase price allocation was adjusted as more detailed analysis was completed and additional 
information was obtained about the facts and circumstances for various items of VantaCore’s plant and equipment that existed as 
of acquisition date. As a result of this adjustment, plant and equipment was increased by $22.5 million with a corresponding 
decrease to goodwill. In the second quarter 2015, the purchase price allocation was adjusted as more detailed analysis was completed 
and additional information was obtained about the facts and circumstances for VantaCore’s right to mine and intangible assets that 
existed as of the acquisition date. As a result of this adjustment, Mineral rights, net and Intangible assets, net were increased by 
$24.7 million with a corresponding decrease to Goodwill. The purchase price allocation was further adjusted as more detailed 
analysis was completed for VantaCore’s asset retirement obligations that existed as of acquisition date. As a result of this adjustment, 
asset retirement obligations were decreased by $2.3 million with a corresponding decrease to the asset retirement cost that was 
capitalized as part of the related land, property and equipment. The accounting for the VantaCore acquisition was completed in 
the second quarter of 2015 with the exception of this asset retirement obligation adjustment that was recoded in the fourth quarter 
of 2015. Measurement-period adjustments were not material to prior period financial statements and were recorded during the 
period in which the amount of the adjustment was determined. The accounting for the VantaCore acquisition is summarized as 
follows (in thousands):

Consideration
Cash
NRP common units

Total consideration given

Allocation of Purchase Price

Current assets
Land, property and equipment
Mineral rights
Other assets
Current liabilities
Asset retirement obligation
Goodwill

Fair value of net assets acquired

October 1, 2014

$

$

$

$

168,978
31,604
200,582

37,222
59,946
111,500
4,347
(16,953)
(1,005)
5,525
200,582

Included in the Consolidated Statements of Comprehensive Income was revenue of $42.1 million and operating income of 
$0.1 million for the year ended December 31, 2014.  Transaction costs through December 31, 2014 associated with this acquisition 
were $2.9 million and were expensed as incurred. These expenses are reflected in Operating and maintenance expenses on the 
Consolidated Statements of Comprehensive Income. 

Sanish Field Acquisition

On November 12, 2014, the Partnership continued its effort to own a more diversified portfolio of natural resources by 
completing its acquisition of non-operated oil and gas working interests in the Sanish Field of the Williston Basin from an affiliate 
of Kaiser-Francis Oil Company for $339.1 million. 

The  Partnership  accounted  for  the  transaction  as  a  business  combination  under  the  acquisition  method  of  accounting. 
Accordingly, the Partnership conducted assessments of net assets acquired and recognized amounts for identifiable assets acquired 
and liabilities assumed at their estimated fair values on the acquisition date, while transaction and integration costs associated with 
the acquisitions were expensed as incurred. The fair value of these assets and liabilities was estimated using a discounted cash 
flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement. 
Significant inputs used to determine the fair value include estimates of: (i) reserves, including estimated oil and natural gas reserves 
and risk-adjusted probable reserves; (ii) future commodity prices; (iii) production costs, (iv) capital expenditures, (v) production 
and (vi) discount rates. The results of operations of the acquisition have been included in our consolidated financial statements 
since the acquisition date. The accounting for the Sanish Field acquisition was completed in the second quarter of 2015 without 
significant changes during the measurement period and is summarized as follows (in thousands):

91

 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Consideration
Cash

Allocation of Purchase Price

Mineral rights - proven oil and gas properties
Mineral rights - probable and possible oil and gas resources

Fair value of net assets acquired

November 12, 2014

$

$

339,093

298,293
40,800
339,093

Included in the Consolidated Statements of Comprehensive Income was revenue of $12.8 million and operating income of 
$3.7 million for the year ended December 31, 2014. The transaction costs incurred in connection with this acquisition were $1.8 
million through December 31, 2014, and were expensed as incurred. These expenses are reflected in Operating and maintenance 
expenses on the Consolidated Statements of Comprehensive Income. 

Pro Forma Financial Information (unaudited)

The following unaudited pro forma financial information (in thousands) presents a summary of the Partnership’s consolidated 
revenues, net income and net income per common unit for the twelve months ended December 31, 2014 and 2013 assuming the 
VantaCore and Sanish Field acquisitions had been completed as of January 1, 2013, including adjustments to reflect the values 
assigned to the net assets acquired:

Total revenues and other income
Net income
Basic and diluted net income per common unit

Other Oil and Gas Aquisitions

For the Years ended
December 31,

2014

2013

$
$
$

533,517
122,319
9.90

$
$
$

579,933
197,164
16.00

During the year ended December 31, 2013, the Partnership also completed two smaller acquisitions of oil and natural gas 

properties located in the Williston Basin as described below: 

(cid:51)(cid:85)(cid:78)(cid:68)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:33)(cid:67)(cid:81)(cid:85)(cid:73)(cid:83)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)

In December, 2013, the Partnership completed the acquisition of non-operated working interests in oil and gas properties in 
the  Williston  Basin  of  North  Dakota  from  Sundance  Energy,  Inc.  for  $29.4  million,  following  post-closing  purchase  price 
adjustments. The Partnership accounted for the transaction in accordance with the authoritative guidance for business combinations. 
During the third quarter of 2014, the Partnership finalized the determination of the fair value of the assets acquired and liabilities 
assumed in the acquisition, with no material adjustments. The assets acquired are included in Mineral rights in the accompanying 
Consolidated Balance Sheets.

(cid:33)(cid:66)(cid:82)(cid:65)(cid:88)(cid:65)(cid:83)(cid:0)(cid:33)(cid:67)(cid:81)(cid:85)(cid:73)(cid:83)(cid:73)(cid:84)(cid:73)(cid:79)(cid:78)

In August, 2013, the Partnership completed the acquisition of non-operated working interests in oil and gas properties in the 
Williston Basin of North Dakota and Montana from Abraxas Petroleum for $38.0 million, following post-closing purchase price 
adjustments. The Partnership accounted for the transaction in accordance with the authoritative guidance for business combinations. 
During the second quarter of 2014, the Partnership finalized the determination of the fair values of the assets acquired and liabilities 
assumed in the acquisition, with no material adjustments. The assets acquired are included in Mineral rights on the accompanying 
Consolidated Balance Sheets.

With respect to the Abraxas and Sundance acquisitions, revenues of $5.4 million and operating income of $2.5 million were 
included  in  the  Consolidated  Statements  of  Comprehensive  Income  and  Consolidated  Balance  Sheet  for  the  year  ended 
December 31, 2013.

92

 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

5.    Equity Investment 

We account for our 49% investment in Ciner Wyoming LLC ("Ciner Wyoming", and formerly "OCI Wyoming LLC") using 
the equity method of accounting. Ciner Wyoming distributed $46.8 million, $46.6 million and $72.9 million to us in the year ended 
December 31, 2015, 2014 and 2013, respectively. 

The difference between the amount at which the investment in Ciner Wyoming is carried and the amount of underlying 
equity in Ciner Wyoming's net assets was $154.8 million and $162.7 million as of December 31, 2015 and 2014, respectively.  
This excess basis relates to plant, property and equipment and right to mine assets. The excess basis difference that relates to 
property, plant and equipment is being amortized into income using the straight-line method over a weighted average of 28 years. 
The excess basis difference that relates to right to mine assets is being amortized into income using the units of production method. 

Our equity in the earnings of Ciner Wyoming is summarized as follows (in thousands):

Income allocation to NRP’s equity interests
Amortization of basis difference
Equity in earnings of unconsolidated investment

For the Year Ended December 31,

2015

2014

2013

$

$

54,709
(4,791)
49,918

$

$

47,354
(5,938)
41,416

$

$

37,036
(2,850)
34,186

The results of Ciner Wyoming’s operations are summarized as follows (in thousands):

Sales
Gross profit
Net Income

For the Year Ended December 31,

$

2015
486,393
131,493
111,650

$

2014
465,032
118,439
96,640

$

2013
442,132
94,299
79,655

The financial position of Ciner Wyoming is summarized as follows (in thousands):

Current assets
Noncurrent assets
Current liabilities
Noncurrent liabilities

6.    Inventory

For the Year Ended December 31,

$

$

2015
144,695
233,845
43,018
116,808

2014
179,851
223,053
47,704
149,192

The components of inventories at December 31, 2015 and 2014 are as follows (in thousands):

Aggregates
Supplies and parts
Total inventory

7.    Plant and Equipment

The Partnership’s plant and equipment consist of the following (in thousands):

Plant and equipment at cost
Construction in process
Less accumulated depreciation

Total plant and equipment, net

93

December 31,
2015

December 31,
2014

7,056
779
7,835

$

$

4,596
1,218
5,814

December 31,
2015

December 31,
2014

92,203
1,074
(32,038)
61,239

$

$

89,759
457
(30,123)
60,093

$

$

$

$

 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Depreciation expense related to the Partnership's plant and equipment totaled $15.9 million, $7.6 million and $6.0 million
for the year ended December 31, 2015, 2014 and 2013, respectively. During the second quarter of 2015 the Partnership recorded 
a $2.3 million impairment expense related to a coal preparation plant and during the fourth quarter of 2015 the Partnership recorded 
a $4.7 million impairment expense related to coal processing and transportation assets as well as obsolete equipment at our Logan 
office. The fair value measurement of these impaired assets recorded at fair value were $0.0 million at the end of the reporting 
period.  The Partnership also recorded a $0.7 million impairment expense related to obsolete plant and equipment at VantaCore.  
During the fourth quarter of 2014, the Partnership recorded $0.8 million in impairment expense related to a coal preparation plant.  
These impairment charges are included in Asset impairments in the Consolidated Statements of Comprehensive Income for the 
year ending December 31, 2015 and December 31, 2014, respectively.

8.    Mineral Rights 

The Partnership’s mineral rights consist of the following (in thousands):

For the Year Ended December 31, 2015

Coal, Hard Mineral Royalty and Other
VantaCore
Oil and Gas
Total

Coal, Hard Mineral Royalty and Other
VantaCore
Oil and Gas
Total

Carrying Value
$ 1,278,274
112,700
155,293
$ 1,546,267

Accumulated
Depletion

Net Book Value
846,014
(432,260) $
109,618
(3,082)
138,395
(16,898)
(452,240) $ 1,094,027

For the Year Ended December 31, 2014

Carrying Value
$ 1,680,169
87,907
560,395
$ 2,328,471

Accumulated
Depletion

Net Book Value
(505,582) $ 1,174,587
87,425
(482)
519,840
(40,555)
(546,619) $ 1,781,852

$

$

$

$

Depletion expense related to the Partnership’s mineral rights totaled $80.3 million, $68.6 million and $54.6 million for the 

year ended December 31, 2015, 2014 and 2013, respectively.

Impairment of Mineral Rights 

The  Partnership  has  developed  procedures  to  periodically  evaluate  its  long-lived  assets  for  possible  impairment. These 
procedures are performed throughout the year and consider both quantitative and qualitative information based on historic, current 
and future performance and are designed to identify impairment indicators. If an impairment indicator is identified, additional 
evaluation is performed for that asset that considers both quantitative and qualitative information. A long-lived asset is deemed 
impaired when the future expected undiscounted cash flows from its use and disposition is less than the assets’ carrying value. 
Impairment is measured based on the estimated fair value, which is primarily determined based upon the present value of the 
projected future cash flow compared to the assets’ carrying value. We believe our estimates of cash flows and discount rates are 
consistent  with  those  of  principal  market  participants. The  inputs  used  by  management  for  fair  value  measurements  include 
significant inputs that are not observable in the market and thus represent a Level 3 fair value measurement for these types of 
assets. In addition to the evaluations discussed above, specific events such as a reduction in economically recoverable reserves or 
production ceasing on a property for an extended period may require that a separate impairment evaluation be completed on a 
significant property. 

94

 
 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

During the years ended December 31, 2015, 2014 and 2013, the Partnership identified facts and circumstances that indicated 
that the carrying value of certain of its mineral rights exceed future cash flows from those assets and recorded non-cash impairment 
expense as follows (in thousands):

Impaired Asset Description

Oil and gas properties

Coal properties

Hard mineral royalty properties

Total

For the years ended December 31,

2015
367,576 (1) $
257,468 (2)
43,402 (3)
668,446

$

$

$

2014

2013

—
16,793 (4)
3,013 (4)
19,806

$

$

—

734

734

(1)  We recorded $335.7 million of oil and gas property impairment during the third quarter 2015 and $31.9 million during the 
fourth quarter of 2015. The fair value measurement of these impaired assets recorded at fair value were $108.0 million at 
the end of the reporting period. These impairments primarily resulted from declines in future expected realized commodity 
prices and reduced expected drilling activity on our acreage. NRP compared net capitalized costs of its oil and natural gas 
properties to estimated undiscounted future net cash flows. If the net capitalized cost exceeded the undiscounted future net 
cash flows, NRP recorded an impairment for the excess of net capitalized cost over fair value. A discounted cash flow 
method was used to estimate fair value. Significant inputs used to determine the fair value include estimates of: (i) oil and 
natural gas reserves and risk-adjusted probable and possible reserves; (ii) future commodity prices; (iii) production costs, 
(iv)  capital  expenditures,  (v)  production  and  (vi)  discount  rates.  The  underlying  commodity  prices  embedded  in  the 
Partnership's estimated cash flows are the product of a process that begins with NYMEX forward curve pricing as of the 
measurement date, adjusted for estimated location and quality differentials.

(2)  We recorded $1.5 million of coal property impairment during the second quarter of 2015, $247.8 million of coal property 
impairment during the third quarter of 2015 and $8.2 million during the fourth quarter of 2015. The fair value measurement 
of these impaired assets recorded at fair value were $0.4 million at the end of the reporting period. These impairments 
primarily resulted from the continued deterioration and expectations of further reductions in global and domestic coal 
demand due to reduced global steel demand, sustained low natural gas prices, and continued regulatory pressure on the 
electric power generation industry. NRP compared net capitalized costs of its coal properties to estimated undiscounted 
future net cash flows. If the net capitalized cost exceeded the undiscounted future cash flows, NRP recorded an impairment 
for the excess of net capitalized cost over fair value. Significant inputs used to determine fair value include estimates of 
future cash flow, discount rate and useful economic life. Estimated cash flows are the product of a process that began with 
current realized pricing as of the measurement date and included an adjustment for risk related to the future realization of 
cash flows. 

(3)  We recorded $43.4 million of aggregates property impairment during the third quarter of 2015. The fair value measurement 
of these impaired assets recorded at fair value was $0.0 million at the end of the reporting period. This impairment primarily 
resulted from greenfield development projects that have not performed as projected, leading to recent lease concessions 
on minimums and royalties combined with the continued regional market decline for certain properties. NRP compared 
net capitalized costs of its aggregates properties to estimated undiscounted future net cash flows. If the net capitalized cost 
exceeded the undiscounted cash flows, NRP recorded an impairment for the excess of net capitalized cost over fair value. 
A discounted cash flow model was used to estimate fair value. Significant inputs used to determine fair value include 
estimates of future cash flow, discount rate and useful economic life. Estimated cash flows are the product of a process 
that began with current realized pricing as of the measurement date and included an adjustment for risk related to the future 
realization of cash flows.

(4)  We recorded $16.8 million of coal property impairment and $3.0 million impairment of our aggregates properties during 
the fourth quarter of 2014. Management concluded certain unleased properties were impaired due primarily to the ongoing 
regulatory environment and continued depressed coal markets with little indications of improvement in the near term. The 
fair values for those unleased properties were determined for the associated reserves using Level 2 market approaches 
based upon recent comparable sales and Level 3 expected cash flows.

95

 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

9.    Goodwill and Intangible Assets 

The Partnership's intangible assets consist of the following (in thousands):

Contract intangibles
Other intangibles
Less accumulated amortization
Total intangible assets, net

December 31,
2015

December 31,
2014

$

$

81,109
5,076
(29,258)
56,927

$

$

82,972
3,004
(25,243)
60,733

Amortization expense related to the Partnership's intangible assets totaled $4.6 million, $3.6 million and $3.8 million for 

the years ended December 31, 2015, 2014 and 2013, respectively.

During the second quarter of 2014, the Partnership and a lessee amended an aggregates lease in its Coal, Hard Mineral 
Royalty and Other segment, which led the Partnership to conclude an impairment triggering event had occurred. Fair value of the 
lease agreement was determined using Level 3 expected cash flows. The resulting impairment expense of $5.6 million is included 
in Asset impairments on the Consolidated Statements of Comprehensive Income.

The estimates of amortization expense for the periods as indicated below are based on current mining plans and are subject 

to revision as those plans change in future periods. 

For the Year Ended December 31,

2016
2017
2018
2019
2020

Estimated Amortization Expense

(in thousands)

$

3,544
3,095
3,108
3,108
3,108

The weighted average remaining amortization period for contract intangibles and other intangibles was 14 years and 31 

years, respectively. 

During the fourth quarter of 2014, $52.0 million of goodwill was added relating to the VantaCore acquisition. This amount 
represented the preliminary residual value. During 2015, the purchase price allocation was adjusted as more detailed analysis was 
completed and additional information was obtained about the facts and circumstances for VantaCore’s property, plant and equipment, 
right to mine assets and asset retirement obligations that existed as of the acquisition date. These adjustments decreased goodwill 
by $46.5 million and resulted in an acquisition date goodwill of $5.5 million. 

During  the  fourth  quarter  of 2015,  we  evaluated  goodwill  for  impairment  and  compared  the  estimated  fair  value  of  the 
VantaCore reporting unit to its carrying amount. The carrying amount exceeded fair value and we recorded a  $5.5 million goodwill 
impairment expense. The lower fair value was primarily a result of the deterioration in certain regional markets in which VantaCore 
operates causing a decline in future performance levels compared to levels estimated during the purchase price allocation process. 
A discounted cash flow model was used to estimate fair value. Significant inputs used to determine fair value include estimates 
of  future  cash  flow,  discount  rate  and  useful  economic  life. These  estimates  were  based  on  current  conditions  and  historical 
experience applied to develop projections of future operating performance. 

10.    Debt and Debt—Affiliate

As used in this Note 10, references to "NRP LP" refer to Natural Resource Partners L.P. only, and not to NRP (Operating) 
LLC, or NRP Oil and Gas LLC, wholly owned subsidiaries of NRP LP, or any of Natural Resource Partners L.P.’s subsidiaries. 
References to "Opco" refer to NRP (Operating) LLC and its subsidiaries. References to NRP Oil and Gas refer to NRP Oil and 
Gas LLC, a wholly owned subsidiary of NRP LP. NRP Finance Corporation ("NRP Finance") is a wholly owned subsidiary of 
NRP LP and a co-issuer with NRP LP on the 9.125% senior notes described below. See discussion of Management's Forecast, 
Strategic Plan and Going Concern Analysis and certain matters involving the Partnership's debt in Note 2.

96

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

As of December 31, 2015 and 2014, Debt and debt—affiliate consisted of the following (in thousands):

NRP LP Debt:

$425 million 9.125% senior notes, with semi-annual interest payments in April and
October, due October 2018, $300 million issued at 99.007% and $125 million issued
at 99.5%

$

422,923

$

422,167

Opco Debt:

December 31,
2015

December 31,
2014

$300 million floating rate revolving credit facility, due October 2017

$300 million floating rate revolving credit facility, due August 2016

$200 million floating rate term loan, due January 2016

4.91% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in June, due June 2018

8.38% senior notes, with semi-annual interest payments in March and September,
with annual principal payments in March, due March 2019

5.05% senior notes, with semi-annual interest payments in January and July, with
annual principal payments in July, due July 2020

5.31% utility local improvement obligation, with annual principal and interest
payments in February, due March 2021

5.55% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in June, due June 2023

4.73% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in December, due December 2023

5.82% senior notes, with semi-annual interest payments in March and September,
with annual principal payments in March, due March 2024

8.92% senior notes, with semi-annual interest payments in March and September,
with annual principal payments in March, due March 2024

5.03% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in December, due December 2026

5.18% senior notes, with semi-annual interest payments in June and December, with
annual principal payments in December, due December 2026

NRP Oil and Gas Debt:

Reserve-based revolving credit facility due November 2019

Total debt and debt—affiliate
Less: current portion of long-term debt, net

Total long-term debt and debt—affiliate

NRP LP Debt

(cid:51)(cid:69)(cid:78)(cid:73)(cid:79)(cid:82)(cid:0)(cid:46)(cid:79)(cid:84)(cid:69)(cid:83)    

290,000

—

—

13,850

85,714

38,462

1,153

21,600

60,000

—

200,000

75,000

18,467

107,143

46,154

1,345

24,300

67,500

135,000

150,000

40,909

45,455

148,077

161,538

42,308

46,154

85,000

1,384,996
(80,983)
1,304,013

$

110,000

1,475,223
(80,983)
1,394,240

$

In September 2013, NRP LP, together with NRP Finance as co-issuer, issued $300.0 million of 9.125% Senior Notes due 
2018 at an offering price of 99.007% of par. Net proceeds after expenses from the issuance of the senior notes were approximately 
$289.0 million. The senior notes call for semi-annual interest payments on April 1 and October 1 of each year, and will mature on 
October 1, 2018.

In October 2014, NRP LP, together with NRP Finance as co-issuer, issued an additional $125.0 million of its 9.125% Senior 
Notes due 2018 at an offering price of 99.5% of par. The notes constitute the same series of securities as the existing $300.0 million
9.125% senior notes due 2018 issued in September 2013. Net proceeds of $122.6 million from the additional issuance of the Senior 
Notes were used to fund a portion of the purchase price of NRP’s acquisition of non-operated working interests in oil and gas 
assets located in the Williston Basin in North Dakota. The notes call for semi-annual interest payments on April 1 and October 1 
of each year and will mature on October 1, 2018.

97

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

NRP and NRP Finance have the option to redeem the NRP Senior Notes, in whole or in part, at any time on or after April 1, 
2016, at fixed redemption prices specified in the indenture governing the NRP Senior Notes (the "NRP Senior Notes Indenture"). 
Before April 1, 2016, NRP and NRP Finance may redeem all or part of the NRP Senior Notes at a redemption price equal to the 
sum of the principal plus a make whole premium at the redemption date, plus accrued and unpaid interest, if any, to the redemption 
date. Furthermore, before April 1, 2016, NRP and NRP Finance may on any one or more occasions redeem up to 35% of the 
aggregate principal amount of the notes with the net proceeds of certain public or private equity offerings at a redemption price 
of 109.125% of the principal amount of notes, plus any accrued and unpaid interest, if any, to the date of redemption, if at least 
65%  of  the  aggregate  principal  amount  of  the  notes  issued  under  the  indenture  remains  outstanding  immediately  after  such 
redemption and the redemption occurs within 180 days of the closing date of such equity offering. In the event of a change of 
control, as defined in the indenture, the holders of the notes may require NRP and NRP Finance to purchase their notes at a purchase 
price equal to 101% of the principal amount of the notes, plus accrued and unpaid interest, if any.

The indenture governing the $425.0 million of senior notes issued by NRP LP (the "Indenture") contains covenants that, 
among other things, limit the ability of NRP LP and certain of its subsidiaries to incur or guarantee additional indebtedness. Under 
the Indenture, NRP LP and certain of its subsidiaries generally are not permitted to incur additional indebtedness unless, on a 
consolidated basis, the fixed charge coverage ratio (as defined in the indenture) is at least 2.0 to 1.0 for the four preceding full 
fiscal quarters. The ability of NRP LP and certain of its subsidiaries to incur additional indebtedness is further limited in the event 
the amount of indebtedness of NRP LP and certain of its subsidiaries that is senior to NRP LP’s unsecured indebtedness exceeds 
certain thresholds. As of December 31, 2015 and December 31, 2014, NRP was in compliance with the terms of the financial 
covenants contained in its debt agreements.

Opco Debt

All of Opco’s debt is guaranteed by its wholly owned subsidiaries and is secured by certain of the assets of Opco and its 
wholly owned subsidiaries other than NRP Trona LLC, as further described below. As of December 31, 2015 and December 31, 
2014, Opco was in compliance with the terms of the financial covenants contained in its debt agreements.

(cid:50)(cid:69)(cid:86)(cid:79)(cid:76)(cid:86)(cid:73)(cid:78)(cid:71)(cid:0)(cid:35)(cid:82)(cid:69)(cid:68)(cid:73)(cid:84)(cid:0)(cid:38)(cid:65)(cid:67)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)

In June 2015, Opco entered into a $300.0 million Third Amended and Restated Credit Agreement (the "A&R Revolving 
Credit Facility"), which amended and restated Opco’s $300.0 million Second Amended and Restated Credit Agreement due August 
2016. The A&R Revolving Credit Facility matures on October 2, 2017, is guaranteed by all of Opco’s wholly owned subsidiaries, 
and is secured by liens on certain of the assets of Opco and its subsidiaries, as further described below.

Initially, indebtedness under the A&R Revolving Credit Facility bears interest, at Opco's option, at a rate of either: 

• 

the higher of (i) the prime rate as announced by the agent bank; (ii) the federal funds rate plus 0.50%; or (iii) LIBOR 
plus 1%, in each case plus 2.375%; or

• 

a rate equal to LIBOR plus 3.375% 

Borrowings under the A&R Revolving Credit Facility will bear interest at such rate until the time that Opco delivers quarterly 
financial statements for the year ended December 31, 2015 to the lenders thereunder.  Following such delivery date, indebtedness 
under the A&R Revolving Credit Facility will bear interest, at Opco's option, at a rate of either:  

• 

the higher of (i) the prime rate as announced by the agent bank; (ii) the federal funds rate plus 0.50%; or (iii) LIBOR 
plus 1%, in each case plus an applicable margin ranging from 1.50% to 2.50% or 

• 

a rate equal to LIBOR plus an applicable margin ranging from 2.50% to 3.50% 

The weighted average interest rates for the borrowings outstanding under the A&R Revolving Credit Facility for the twelve 

months ended December 31, 2015 and year ended December 31, 2014 were 2.91% and 1.98%, respectively. 

Opco will incur a commitment fee on the unused portion of the revolving credit facility at a rate of 0.50% per annum. Opco 

may prepay all amounts outstanding under the A&R Revolving Credit Facility at any time without penalty.

98

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The A&R Revolving Credit Facility contains financial covenants requiring Opco to maintain: 

• 

a leverage ratio of consolidated indebtedness to consolidated EBITDDA (as defined in the A&R Revolving Credit Facility) 
not to exceed:

• 

• 

• 

4.0 to 1.0 for each fiscal quarter ending on or before March 31, 2016;

3.75 to 1.0 for each subsequent fiscal quarter ending on or before March 31, 2017; and

3.5 to 1.0 for each fiscal quarter ending on or after June 30, 2017; and

• 

a ratio of consolidated EBITDDA to consolidated fixed charges (consisting of consolidated interest expense and consolidated 
lease expense) of not less than 3.5 to 1.0.

The A&R Revolving Credit Facility contains certain additional customary negative covenants that, among other items, restrict 
Opco’s ability to incur additional debt, grant liens on its assets, make investments, sell assets and engage in business combinations. 
Included in the investment covenant are restrictions upon Opco’s ability to acquire assets where Opco does not maintain certain 
levels of liquidity. The A&R Revolving Credit Facility also contains customary events of default, including cross-defaults under 
Opco’s senior notes (as described below).

The A&R Revolving Credit Facility is collateralized and secured by liens on certain of Opco’s assets with a carrying value 
of $709.9 million classified as Land, Mineral rights and Plant and equipment on the Partnership’s Consolidated Balance Sheet as 
of December 31, 2015. The collateral includes (1) the equity interests in all of Opco’s wholly owned subsidiaries, other than NRP 
Trona LLC (which owns a 49% non-controlling equity interest in Ciner Wyoming), (2) the personal property and fixtures owned 
by Opco’s wholly owned subsidiaries, other than NRP Trona LLC, (3) Opco’s material coal royalty revenue producing properties, 
(4) real property associated with certain of VantaCore’s construction aggregates mining operations, and (5) certain of Opco’s coal-
related infrastructure assets.

(cid:52)(cid:69)(cid:82)(cid:77)(cid:0)(cid:44)(cid:79)(cid:65)(cid:78)(cid:0)

During 2013, Opco entered into a $200.0 million Term Loan facility (the "Term Loan") with a maturity date of January 23, 
2016. The weighted average interest rates for the debt outstanding under the term loan for the twelve months ended December 31, 
2015 and 2014 were 2.19% and 2.22% respectively. 

Opco repaid $101.0 million in principal under the Term Loan during the third quarter of 2013, and repaid an additional $24.0 
million during the fourth quarter of 2014. In September 2015, Opco repaid the remaining $75.0 million on the term loan using 
borrowings under the A&R Revolving Credit Facility.

(cid:51)(cid:69)(cid:78)(cid:73)(cid:79)(cid:82)(cid:0)(cid:46)(cid:79)(cid:84)(cid:69)(cid:83)   

Opco made principal payments of $80.8 million on its senior notes during the year ended December 31, 2015. The Note 

Purchase Agreements relating to Opco’s senior notes contain covenants requiring Opco to: 

•  Maintain a ratio of consolidated indebtedness to consolidated EBITDDA (as defined in the note purchase agreement) 
of no more than 4.0 to 1.0 for the four most recent quarters;

not permit debt secured by certain liens and debt of subsidiaries to exceed 10% of consolidated net tangible assets (as 

• 
defined in the note purchase agreement); and

•  maintain the ratio of consolidated EBITDDA (as defined in the note purchase agreement) to consolidated fixed charges 
(consisting of consolidated interest expense and consolidated operating lease expense) at not less than 3.5 to 1.0.

The 8.38% and 8.92% senior notes also provide that in the event that Opco’s leverage ratio of consolidated indebtedness to 
consolidated EBITDDA (as defined in the note purchase agreement) exceeds 3.75 to 1.00 at the end of any fiscal quarter, then in 
addition to all other interest accruing on these notes, additional interest in the amount of 2.00% per annum shall accrue on the 
notes for the two succeeding quarters and for as long thereafter as the leverage ratio remains above 3.75 to 1.00.

In connection with the entry into the A&R Revolving Credit Facility in June 2015, Opco entered into the Third Amendment 
to the Note Purchase Agreements (the "NPA Amendment") that provides for the security of the senior notes by the same collateral 
package pledged by Opco and its subsidiaries to secure the A&R Revolving Credit Facility, as described above. In addition, the 

99

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

NPA Amendment includes a covenant that provides that, in the event Opco or any of its subsidiaries is subject to any additional 
or more restrictive covenants under the agreements governing its material indebtedness (including the A&R Revolving Credit 
Facility, and all renewals, amendments or restatements thereof), such covenants shall be deemed to be incorporated by reference 
in the senior notes and the holders of the senior notes shall receive the benefit of such additional or more restrictive covenants to 
the same extent as the lenders under such material indebtedness agreement.

NRP Oil and Gas Debt

(cid:50)(cid:69)(cid:86)(cid:79)(cid:76)(cid:86)(cid:73)(cid:78)(cid:71)(cid:0)(cid:35)(cid:82)(cid:69)(cid:68)(cid:73)(cid:84)(cid:0)(cid:38)(cid:65)(cid:67)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:3)(cid:3)(cid:3)

In August 2013, NRP Oil and Gas entered into a 5-year, $100.0 million senior secured, reserve-based revolving credit facility 
in order to fund capital expenditure requirements related to the development of the oil and gas assets in which it owns non-operated 
working interests. In connection with the closing of the Sanish Field acquisition in November 2014, the credit facility was amended 
to increase its size to $500.0 million with an initial borrowing base of $137.0 million, and the maturity date thereof was extended 
to November 2019. 

The maximum amount available under the credit facility is subject to semi-annual redeterminations of the borrowing base 
in May and November of each year, based on the value of the proved oil and natural gas reserves of NRP Oil and Gas, in accordance 
with  the  lenders’  customary  procedures  and  practices.  NRP  Oil  and  Gas  and  the  lenders  each  have  a  right  to  one  additional 
redetermination each year. In April 2015, the lenders completed their semi-annual redetermination of the borrowing base under 
the NRP Oil and Gas revolving credit facility and the $137.0 million borrowing base under that facility was redetermined to $105.0 
million.    In  October  2015,  the  lenders  under  the  NRP  Oil  and  Gas  revolving  credit  facility  completed  their  semi-annual 
redetermination of the borrowing base under the NRP Oil and Gas revolving credit facility and the $105.0 million borrowing base 
was redetermined to $88.0 million.  The Partnership repaid $25.0 million of outstanding borrowings under the NRP Oil and Gas 
revolving credit facility during the year ended December 31, 2015. At December 31, 2015 and 2014, there was $85.0 million and 
$110.0 million respectively, outstanding under the NRP Oil and Gas revolving credit facility.

The credit facility is secured by a first priority lien and security interest in substantially all of the assets of NRP Oil and Gas. 
NRP Oil and Gas is the sole obligor under its revolving credit facility, and neither the Partnership nor any of its other subsidiaries 
is a guarantor of such facility. The weighted average interest rate for the debt outstanding under the credit facility for the twelve 
months ended December 31, 2015 and, 2014 was 2.50% and 2.37%, respectively.

Indebtedness under the NRP Oil and Gas credit facility bears interest, at the option of NRP Oil and Gas, at either:

• 

the higher of (i) the prime rate as announced by the agent bank; (ii) the federal funds rate plus 0.50%; or (iii) LIBOR 
plus 1%, in each case plus an applicable margin ranging from 0.50% to 1.50%; or 

• 

a rate equal to LIBOR, plus an applicable margin ranging from 1.50% to 2.50%.  

NRP Oil and Gas incurs a commitment fee on the unused portion of the borrowing base under the credit facility at a rate 

ranging from 0.375% to 0.50% per annum.

The NRP Oil and Gas credit facility contains certain covenants, which, among other things, require the maintenance of:

• 

a total leverage ratio (defined as the ratio of the total debt of NRP Oil and Gas to its EBITDAX) of not more than 3.5
to 1.0; and

• 

a minimum current ratio of 1.0 to 1.0.

As of December 31, 2015 and 2014, NRP Oil and Gas was in compliance with the terms of the financial covenants contained 

in its credit facility.

100

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

Consolidated Principal Payments

The consolidated principal payments due are set forth below (in thousands):

2016
2017
2018
2019
2020
Thereafter

NRP LP

Senior Notes
—
—
425,000
—
—
—
425,000

$

$

(1)

Senior Notes
80,983
80,983
80,983
76,366
54,938
212,820
587,073

$

$

Credit Facility
$

— $

290,000
—
—
—
—
290,000

$

$

— $
—
—
85,000
—
—
85,000

80,983
370,983
505,983
161,366
54,938
212,820

$ 1,387,073  

Opco

NRP
Oil and Gas

Credit Facility

Total

(1)  The 9.125% senior notes due 2018 were issued at a discount and as of December 31, 2015 were carried at $422.9 million.

11.    Fair Value Measurements

The Partnership’s financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable and long-
term debt. The carrying amounts reported on our Consolidated Balance Sheets for cash and cash equivalents, accounts receivable 
and accounts payable approximate fair value due to their short-term nature. The following table (in thousands) shows the carrying 
amount and estimated fair value of our other financial instruments:

Assets

Contracts receivable—affiliate, current and long-term
(1)

Debt and debt—affiliate

NRP LP senior notes (2)
Opco senior notes and utility local improvement
obligation (1)

Opco revolving credit facility and term loan facility
(3)
NRP Oil and Gas revolving credit facility (3)

$

$

$

$
$

December 31, 2015

December 31, 2014

Carrying
Amount

Estimated Fair 
Value

Carrying
Amount

Estimated Fair 
Value

4,891

422,923

587,073

290,000
85,000

$

$

$

$
$

4,158

277,313

383,065

290,000
85,000

$

$

$

$
$

4,870

422,167

668,056

275,000
110,000

$

$

$

$
$

5,162

423,780

672,740

275,000
110,000

(1)  The Level 3 fair value is estimated by management using quotations obtained for comparable instruments on the closing 

trading prices near year end.

(2)  The Level 1 fair value is based upon quotations obtained for identical instruments on the closing trading prices near year 

end.

(3)  The Level 3 fair value approximates the carrying amount because the interest rates are variable and reflective of market 

rates and the terms of the credit facility allow the Partnership to repay this debt at any time without penalty.

101

 
 
 
 
 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

12.    Related Party Transactions 

Reimbursements to Affiliates of our General Partner

The Partnership’s general partner does not receive any management fee or other compensation for its management of Natural 
Resource Partners L.P. However, in accordance with the partnership agreement, the general partner and its affiliates are reimbursed 
for expenses incurred on the Partnership’s behalf. Direct general and administrative expenses are charged to the Partnership as 
incurred. The Partnership also reimburses indirect general and administrative costs, including certain legal, accounting, treasury, 
information technology, insurance, administration of employee benefits and other corporate services incurred by the Partnership’s 
general  partner  and  its  affiliates,  Quintana  Minerals  Corporation  and  Western  Pocahontas  Properties  Limited  Partnership 
("WPPLP"). In addition, the Partnership receives non-cash equity contributions from its general partner related to compensation 
paid directly by the general partner and not reimbursed by the Partnership.  These amounts are presented as non-cash equity 
contributions on the Partnership's Consolidated Statements of Partners' Capital.

The Partnership had Accounts payable—affiliates to Quintana Minerals Corporation of $1.1 million and $0.6 million at 
December 31, 2015 and 2014, respectively, for services provided by Quintana Minerals Corporation to the Partnership.  The 
Partnership  had Accounts  payable—affiliates  to  WPPLP  of  $0.3  million  and  $0.4  million  at  December  31,  2015  and  2014, 
respectively.

Direct general and administrative expenses charged to the Partnership by its general partner for services performed by WPPLP 

and Quintana Minerals Corporation are as follows (in thousands):

Operating and maintenance expenses—affiliates, net
General and administrative—affiliates

For the Year Ended
December 31,

2015

2014

2013

16,031
5,312

10,770
3,258

8,821
3,286

The Partnership also leases an office building in Huntington, West Virginia from WPPLP and pays $0.6 million in lease 

payments each year through December 31, 2018. 

Cline Affiliates

Various companies controlled by Chris Cline, including Foresight Energy LP, lease coal reserves from the Partnership, and 
the Partnership also leases coal transportation assets to them for a fee. Mr. Cline, both individually and through another affiliate, 
Adena Minerals, LLC, owns a 31% interest (unaudited) in the NRP's general partner, as well as approximately 0.5 million of NRP's 
common units (unaudited) at December 31, 2015. Coal related revenues from Foresight Energy totaled $86.6 million, $81.5 million
and $88.4 million for the years ended December 31, 2015, 2014 and 2013, respectively.

As of December 31, 2015 and 2014, the Partnership had Accounts receivable—affiliates from Foresight Energy of $6.4 
million and $9.2 million, respectively. As of December 31, 2015, the Partnership had received $82.6 million in minimum royalty 
payments to date that have been recorded as Deferred revenue—affiliates since they have not been recouped by Foresight Energy.

The Partnership owns and leases rail load out and associated facilities to Foresight Energy at Foresight Energy's Sugar Camp 
mine.  The lease agreement is accounted for as a direct financing lease.  Total projected remaining payments under the lease at 
December 31, 2015 were $81.2 million with unearned income of $35.4 million, and the net amount receivable was $45.9 million, 
of  which  $2.0  million  is  included  in Accounts  receivable—affiliates  while  the  remaining  is  included  in  Long-term  contracts 
receivable—affiliate on the accompanying Consolidated Balance Sheets. Minimum lease payments are $5.0 million per year for 
the next five years and represent a $1.25 million per quarter in deficiency payment.

Total projected remaining payments under the lease at December 31, 2014 were $86.3 million with unearned income of $39.0 
million and the net amount receivable was $47.3 million, of which $1.8 million is included in Accounts receivable—affiliates 
while the remaining is included in Long-term contracts receivable—affiliates on the accompanying Consolidated Balance Sheets. 

The  Partnership  holds  a  contractual  overriding  royalty  interest  from  a  subsidiary  of  Foresight  Energy  that  provides  for 
payments based upon production from specific tons at Foresight Energy's Sugar Camp operations. This overriding royalty was 
accounted for as a financing arrangement and is reflected as an affiliate receivable. The net amount receivable under the agreement 
102

 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

as of December 31, 2015 was $4.9 million, of which $1.5 million is included in Accounts receivable—affiliates while the remaining 
is included in Long-term contracts receivable—affiliate.  The net amount receivable under the agreement as of December 31, 2014 
was $5.6 million, of which $1.1 million is included in Accounts receivable—affiliates while the remaining is included in Long-
term contracts receivable—affiliate on the accompanying Consolidated Balance Sheets.

During the years ended December 31, 2015, 2014 and 2013, the Partnership recognized a gain of $9.3 million, $5.7 million
and $8.1 million, respectively on a reserve swap at Foresight Energy's Williamson mine. The gain is included in Coal, hard mineral 
royalty and other—affiliates revenues on the Consolidated Statements of Comprehensive Income. The Level 3 fair value of the 
reserves was estimated using a discounted cash flow model.  The expected cash flows were developed using estimated annual 
sales tons, forecasted sales prices and anticipated market royalty rates. 

Long-Term Debt—Affiliate

Donald R. Holcomb, one of the Partnership’s directors, is a manager of Cline Trust Company, LLC, which owns approximately 
0.54 million of the Partnership’s common units and $20.0 million in principal amount of the Partnership’s 9.125% Senior Notes 
due 2018. The members of the Cline Trust Company are four trusts for the benefit of the children of Chris Cline, each of which 
owns an approximately equal membership interest in the Cline Trust Company. Mr. Holcomb also serves as trustee of each of the 
four trusts. Cline Trust Company, LLC purchased the $20.0 million of the Partnership’s 9.125% Senior Notes due 2018 in the 
Partnership’s offering of $125.0 million additional principal amount of such notes in October 2014 at the same price as the other 
purchasers in that offering. The balance on this portion of the Partnership’s 9.125% Senior Notes due 2018 was $19.9 million as 
of December 31, 2015 and 2014 and is included in Long-term debt, net—affiliate on the accompanying Consolidated Balance 
Sheet.

Quintana Capital Group GP, Ltd.

Corbin J. Robertson, Jr. is a principal in Quintana Capital Group GP, Ltd. ("Quintana Capital"), which controls several private 
equity funds focused on investments in the energy business. In connection with the formation of Quintana Capital, the Partnership 
adopted a formal conflicts policy that establishes the opportunities that will be pursued by the Partnership and those that will be 
pursued by Quintana Capital. The governance documents of Quintana Capital’s affiliated investment funds reflect the guidelines 
set forth in the Partnership's conflicts policy.

At December 31, 2015, a fund controlled by Quintana Capital owned a majority interest in Corsa Coal Corp ("Corsa")., a 
coal mining company traded on the TSX Venture Exchange that is one of the Partnership’s lessees in Tennessee. Corbin J. Robertson 
III, one of the Partnership’s directors, is Chairman of the Board of Corsa. Coal related revenues from Corsa totaled $3.1 million, 
$3.0 million and $4.6 million for the years ended December 31, 2015, 2014 and 2013, respectively.

As of December 31, 2015, the Partnership had recorded $0.3 million in minimum royalty payments to date as Deferred 
revenue—affiliates since they have not been recouped by Corsa.  The Partnership also had Accounts receivable—affiliates totaling 
$0.2 million and $0.3 million from Corsa at December 31, 2015 and 2014, respectively.

A fund controlled by Quintana Capital owned a significant membership interest in Taggart Global USA, LLC, including the 
right to nominate two members of Taggart’s 5-person board of directors. In 2013, Taggart was sold to Forge Group, and Quintana 
no longer retains an interest in Taggart or Forge. The Partnership owns and leases preparation plants to Forge, which operates the 
plants. The lease payments were based on the sales price for the coal that was processed through the facilities.  The revenues from 
Taggart prior to the sale to Forge were $1.8 million for the year ended December 31, 2013.

WPPLP Production Royalty and Overriding Royalty

For the year ended December 31, 2015, the Partnership recorded $0.4 million in operating and maintenance expenses—
affiliates related to a non-participating production royalty payable to WPPLP pursuant to a conveyance agreement entered into in 
2007.  These charges were zero for the years ended December 31, 2014 and 2013. The Partnership had Other assets—affiliate 
from WPPLP of $1.1 million and $0.0 million at December 31, 2015 and December 31, 2014, respectively related to a non-
production royalty receivable from WPPLP for overriding royalty interest on a mine.

103

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

13.    Asset Retirement Obligations 

The Partnership accrues a liability for legal asset retirement obligations based on an estimate of the timing and amount of 
settlement.  The  Partnership  accrues  for  costs  involving  the  ultimate  closure  of  certain  of  its  aggregate  mining  operations  in 
accordance with its operating permits. These charges include costs of land reclamation, water drainage, and incremental direct 
administration cost of closing the operations. The Partnership also accrues for estimated costs relating to plugging wells in which 
it has a non-operation working interest. Upon initial recognition of an asset retirement obligation the Partnership increases the 
carrying amount of the long-lived asset by the same amount as the liability. Over time, the liabilities are accreted for the change 
in their present value, through charges to depreciation, depletion, and amortization and the initial costs are depleted over the useful 
lives of the related assets.

The following table presents a reconciliation (in thousands) of the beginning and ending carrying amounts of the Partnership’s 
asset retirement obligations. The short-term balance of $0.0 million and $0.1 million at December 31, 2015 and 2014, respectively, 
is included in Accrued liabilities and the remaining balance is included in Other non-current liabilities in the Consolidated Balance 
Sheets. The Partnership does not have any assets that are legally restricted for purposes of settling these obligations.

Balance, January 1
Liabilities incurred in current period, including aquisitions
Accretion expense
Acquisition related purchase price adjustments
Balance, December 31

14.    Commitments and Contingencies

Legal

For the Years  Ended
December 31,

2015

2014

$

$

4,973
5
284
(2,280)
2,982

$

$

39
4,697
237
—
4,973

The Partnership is involved, from time to time, in various legal proceedings arising in the ordinary course of business. While 
the ultimate results of these proceedings cannot be predicted with certainty, Partnership management believes these claims will 
not have a material effect on the Partnership’s financial position, liquidity or operations.

The purchase agreement for the acquisition of the Partnership’s interest in Ciner Wyoming, formerly OCI Wyoming, requires 
the Partnership to pay additional contingent consideration to Anadarko to the extent certain performance criteria described in the 
purchase agreement are met at Ciner Wyoming in any of the years 2013, 2014 or 2015. During the first quarters of 2014 and 2015, 
the Partnership paid $0.5 million and $3.8 million, respectively, in contingent consideration to Anadarko. As of December 31, 
2015, the Partnership has estimated and recorded $7.2 million as an accrued liability on its consolidated Balance Sheet, payable 
in the first quarter of 2016 with respect to 2015. The Partnership has no obligation to pay contingent consideration with respect 
to any period after 2015.

In March 2014, Anadarko gave the Partnership written notice that it believed certain reorganization transactions conducted 
in 2013 within the OCI organization triggered an acceleration of the Partnership’s obligation under the purchase agreement with 
Anadarko to pay the additional contingent consideration in full and demanded immediate payment of such amount. The Partnership 
disagreed with Anadarko’s position in a written response provided to them in April 2014. In April 2015, Anadarko sent a written 
request for additional information regarding the OCI reorganization and indicated that they were still considering this claim against 
the Partnership. The Partnership responded in writing in May 2015 and does not believe the reorganization transactions triggered 
an obligation to pay the additional contingent consideration. The Partnership will continue to engage in discussions with Anadarko 
to resolve the issue to the extent necessary. However, if Anadarko were to pursue and prevail on such a claim, the Partnership 
would be required to pay an amount to Anadarko in excess of the amounts already paid, together with the $7.2 million accrual 
described above, up to the maximum amount of the additional contingent consideration, minus a deductible. Under the purchase 
agreement, the maximum cumulative amount of additional contingent consideration is an amount equal to the net present value 
of $50.0 million. Any additional amount paid by the Partnership would be considered to be additional acquisition consideration 
and added to Equity and other unconsolidated investments.

Since 2013, several citizen group lawsuits have been filed against landowners alleging ongoing discharges of pollutants, 
including selenium and conductivity, from valley fills located at reclaimed mountaintop removal mining sites in West Virginia. In 
104

 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

each case, the mine on the subject property had been closed, the property had been reclaimed, and the state reclamation bond had 
been released. Any determination that a landowner or lessee has liability for discharges from a previously reclaimed mine site 
could result in substantial compliance costs or fines and would result in uncertainty as to continuing liability for completed and 
reclaimed coal mine operations. A subsidiary of the Partnership has been named as a defendant in one of these lawsuits. Given the 
early stage of this ongoing litigation, the Partnership currently cannot reasonably estimate a range of potential loss, if any, related 
to this matter.

Hillsboro/Deer Run

On November 24, 2015, we filed a lawsuit against Foresight Energy’s subsidiary, Hillsboro Energy LLC ("Hillsboro"), in 
the Circuit Court of the Fourth Judicial Circuit in Montgomery County, Illinois. The lawsuit alleges, among other items, breach 
of contract by Hillsboro resulting from a wrongful declaration of force majeure at Hillsboro’s Deer Run mine in July 2015. In late 
March 2015, elevated carbon monoxide readings were detected at the Deer Run mine, and coal production at the mine was idled. 
In July 2015, we received the notice declaring a force majeure event at the mine as a result of the elevated carbon monoxide levels. 
The effect of a valid force majeure declaration would relieve Foresight Energy of its obligation to pay us minimum deficiency 
payments of $7.5 million per quarter, or $30.0 million per year. Foresight Energy's failure to make the deficiency payment with 
respect to the second, third and fourth quarters of 2015 resulted in a $16.2 million cash impact to us. Such amount will increase 
for each quarter during which mining operations continue to be idled. We do not currently have an estimate as to when the mine 
will resume coal production. If the mine remains idled for an extended period or if the mine is permanently closed, our financial 
condition could be adversely affected.

Environmental Compliance

The operations the Partnership’s lessees’ conduct on its properties, as well as the aggregates/industrial minerals and oil and 
gas operations in which the Partnership has interests, are subject to federal and state environmental laws and regulations. See "Item 
1. Business—Regulation and Environmental Matters." As an owner of surface interests in some properties, the Partnership may 
be liable for certain environmental conditions occurring on the surface properties. The terms of substantially all of the Partnership’s 
coal leases require the lessee to comply with all applicable laws and regulations, including environmental laws and regulations. 
Lessees post reclamation bonds assuring that reclamation will be completed as required by the relevant permit, and substantially 
all of the leases require the lessee to indemnify the Partnership against, among other things, environmental liabilities. Some of 
these indemnifications survive the termination of the lease. The Partnership makes regular visits to the mines to ensure compliance 
with lease terms, but the duty to comply with all regulations rests with the lessees. The Partnership believes that its lessees will 
be able to comply with existing regulations and does not expect that any lessee’s failure to comply with environmental laws and 
regulations to have a material impact on the Partnership’s financial condition or results of operations. The Partnership has neither 
incurred, nor is aware of, any material environmental charges imposed on the Partnership related to its properties for the period 
ended December 31, 2015. The Partnership is not associated with any environmental contamination that may require remediation 
costs. However, the Partnership’s lessees do conduct reclamation work on the properties under lease to them. Because the Partnership 
is not the permittee of the mines being reclaimed, the Partnership is not responsible for the costs associated with these reclamation 
operations. As an owner of working interests in oil and natural gas operations, the Partnership is responsible for its proportionate 
share  of  any  losses  and  liabilities,  including  environmental  liabilities,  arising  from  uninsured  and  underinsured  events.  The 
Partnership is also responsible for losses and liabilities, including environmental liabilities that may arise from uninsured and 
underinsured events at its VantaCore operations.

15.    Major Lessees 

Revenues from lessees that exceeded ten percent of total revenues and other income for any of the periods presented below 

are as follows (in thousands except for percentages):

2015

For the Years Ended December 31,
2014

2013

Revenues

Percent

Revenues

Percent

Revenues

Percent

Foresight Energy
Alpha Natural Resources

$
$

86,614
34,364

17.7% $
7.0% $

81,546
48,783

20.4% $
12.2% $

88,432
55,147

24.7%
15.4%

All of the revenue related to the customers above is included in revenues of the Coal, Hard Mineral Royalty and Other 

segment.

105

 
 
 
NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

The  Partnership  had  a  significant  concentration  of  revenues  with  Foresight  Energy  and Alpha  Natural  Resources.   The 
exposure is currently spread out over a number of different mining operations and leases. During the year ended December 31, 
2015, total revenues and other income from Alpha Natural Resources included a $6.0 million non-recurring lease assignment fee.    

16.    Long-Term Incentive Plans 

GP  Natural  Resource  Partners  LLC  adopted  the  Natural  Resource  Partners  Long-Term  Incentive  Plan  (the  "Long-Term 
Incentive Plan") for directors of GP Natural Resource Partners LLC and employees of its affiliates who perform services for the 
Partnership. The compensation committee of GP Natural Resource Partners LLC’s board of directors administers the Long-Term 
Incentive Plan. Subject to the rules of the exchange upon which the common units are listed at the time, the board of directors and 
the compensation committee of the board of directors have the right to alter or amend the Long-Term Incentive Plan or any part 
of the Long-Term Incentive Plan from time to time. Except upon the occurrence of unusual or nonrecurring events, no change in 
any outstanding grant may be made that would materially reduce the benefit intended to be made available to a participant without 
the consent of the participant.

Phantom units are incentive based equity awards issued to employees over a vesting period that entitle the grantee to receive 
the cash equivalent to the value of a unit of our common units upon each vesting. The Partnership records compensation cost equal 
to the fair value of the award at the measurement date, which is determined to be the earlier of the performance commitment date 
or the service completion date. In addition, compensation cost for unvested phantom unit awards is adjusted quarterly for any 
changes in the Partnership’s unit price. Under the plan a grantee will receive the market value of a common unit in cash upon 
vesting. Market value is defined as the average closing price over the 20 trading days prior to the vesting date. The compensation 
committee may make grants under the Long-Term Incentive Plan to employees and directors containing such terms as it determines, 
including the vesting period. Outstanding grants vest upon a change in control of the Partnership, the general partner, or GP Natural 
Resource Partners LLC. If a grantee’s employment or membership on the board of directors terminates for any reason, outstanding 
grants will be automatically forfeited unless and to the extent the compensation committee provides otherwise. 

In connection with the phantom unit awards, the Compensation, Nominating and Governance Committee also granted tandem 
Distribution Equivalent Rights ("DERs"), which entitle the holders to receive distributions equal to the distributions paid on the 
Partnership’s common units between the date the units are granted and the vesting date. The DERs are payable in cash upon vesting 
but may be subject to forfeiture if the grantee ceases employment prior to vesting.

A summary of activity in the outstanding grants during 2015 is as follows (in thousands):

Outstanding grants at January 1, 2015

Grants during the period
Grants vested and paid during the period
Forfeitures during the period

Outstanding grants at December 31, 2015

Phantom Units

115
52
(29)
(12)
126

Grants typically vest at the end of a four-year period and are paid in cash upon vesting. The Partnership recorded a credit to 
general and administrative expenses related to its Long-Term Incentive Plan of $3.4 million for the year ended December 31, 2015, 
due to the decline in the market price of the Partnership's common units during 2015. For the years ended December 31, 2014 and 
2013 the Partnership recorded G&A expenses of $1.0 million and $9.6 million, respectively. 

In connection with the Long-Term Incentive Plans, payments are typically made during the first quarter of the year. Payments 
of $4.4 million, $6.5 million and $7.0 million were made during the years ended December 31, 2015, 2014, and 2013, respectively. 
The grant date fair value was $4.2 million, $6.6 million and $7.8 million for awards in 2015, 2014 and 2013, respectively. The 
unaccrued cost associated with unvested outstanding grants and related DERs at December 31, 2015 and December 31, 2014, was 
$0.7 million and $5.2 million, respectively.

106

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

17.  Supplementary Unrestricted Subsidiary Information

The following is presented as supplementary data as required by the Indenture governing the NRP Senior Notes due 2018 
(the "Indenture"). As described in Note 2. Summary of Significant Accounting Policies, in February 2016, the Partnership designated 
NRP Oil and Gas, a wholly owned subsidiary of NRP, as an Unrestricted Subsidiary for purposes of the Indenture. In addition, the 
Partnership has designated BRP LLC, a joint venture in which the Partnership owns a 51% interest, and Coval Leasing Company, 
LLC, a wholly owned subsidiary of BRP LLC, as Unrestricted Subsidiaries for purposes of the Indenture. The information below 
may not necessarily be indicative of the results of operations, or financial position had the subsidiaries operated as independent 
entities. There were no transactions between the Partnership and its Restricted Subsidiaries and its Unrestricted Subsidiaries. In 
accordance  with  the  requirements  of  the  Indenture,  the  following  condensed  consolidating  financial  information  presents  the 
financial condition and results of operations of the Partnership and its Restricted Subsidiaries and its Unrestricted Subsidiaries:

CONDENSED CONSOLIDATING BALANCE SHEETS
(in thousands)

ASSETS

Current assets (including affiliates)
Mineral rights, net
Equity in unconsolidated investment
Other non-current assets (including affiliates)

Total assets

LIABILITIES AND CAPITAL

Current portion of long-term debt, net
Other current liabilities (including affiliates)
Long-term debt, net (including affiliate)
Other non-current liabilities (including affiliates)
Partners' capital
Non-controlling interest

Total liabilities and capital

ASSETS

Current assets (including affiliates)
Mineral rights, net
Equity in unconsolidated investment
Other non-current assets (including affiliates)

Total assets

LIABILITIES AND CAPITAL

Current portion of long-term debt, net
Other current liabilities (including affiliates)
Long-term debt, net (including affiliate)
Other non-current liabilities (including affiliates)
Partners' capital
Non-controlling interest

Total liabilities and capital

December 31, 2015

Unrestricted
Subsidiaries
of NRP

NRP and its
Restricted
Subsidiaries

21,540
134,445
—
2,287
158,272

—
7,351
85,000
4,703
64,663
(3,445)
158,272

$

$

$

99,589
959,582
261,942
204,690
1,525,803

80,983
48,313
1,219,013
165,770
11,673
51
1,525,803

December 31, 2014

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

23,842
446,938
—
4,156
474,936

—
16,212
110,000
5,193
344,232
(701)
474,936

$

$

$

112,276
1,334,914
264,020
258,578
1,969,788

80,983
50,736
1,284,240
177,205
376,573
51
1,969,788

$

$

$

$

$

$

$

$

$

$

$

$

Total

121,129
1,094,027
261,942
206,977
1,684,075

80,983
55,664
1,304,013
170,473
76,336
(3,394)
1,684,075

Total

136,118
1,781,852
264,020
262,734
2,444,724

80,983
66,948
1,394,240
182,398
720,805
(650)
2,444,724

107

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(in thousands)

Year Ended December 31, 2015

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

Revenues
Operating expenses
Loss from operations
Other expense
Net loss
Add: comprehensive loss from unconsolidated investment and other

$

$

56,091
361,166
(305,075)
4,065
(309,140)
—

Comprehensive loss

$

(309,140) $

$

432,758
605,594
(172,836)
89,744
(262,580)
(1,693)
(264,273) $

Revenues
Operating expenses
Income from operations
Other expense
Net income
Add: comprehensive loss from unconsolidated investment and other
Comprehensive income

Revenues
Operating expenses
Income from operations
Other expense
Net income
Add: comprehensive income from unconsolidated investment and
other
Comprehensive income

18.    Subsequent Events

Year Ended December 31, 2014

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

56,840
41,754
15,086
662
14,424
—
14,424

$

$

342,912
169,079
173,833
79,427
94,406
(81)
94,325

$

$

Year Ended December 31, 2013

Unrestricted 
Subsidiaries
of NRP

NRP and its 
Restricted
Subsidiaries

$

14,386
8,812
5,574
39
5,535

$

343,731
113,069
230,662
64,119
166,543

—
5,535

$

65
166,608

$

$

$

$

$

Total

488,849
966,760
(477,911)
93,809
(571,720)
(1,693)
(573,413)

Total

399,752
210,833
188,919
80,089
108,830
(81)
108,749

Total

358,117
121,881
236,236
64,158
172,078

65
172,143

The  following  represents  material  events  that  have  occurred  subsequent  to  December 31,  2015  through  the  time  of  the 

Partnership’s filing of its Annual Report on Form 10-K with the SEC:

Distribution Declared

On  February 12, 2016, the Partnership paid a distribution of $0.45 per unit to unitholders of record on February 5, 2016. 

Reverse Unit Split

On January 26, 2016, the board of directors of our general partner approved a 1-for-10 reverse split on our common units, 
effective following market close on February 18, 2016. Pursuant to the authorization provided, the Partnership completed the 1-
for-10 reverse unit split and its common units began trading on a reverse unit split-adjusted basis on the New York Stock Exchange 
on February 18, 2016. As a result of the reverse unit split, every 10 units of issued and outstanding common units were combined 
into one issued and outstanding common unit, without any change in the par value per unit. The reverse unit split reduced the 
108

NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED

number of common units outstanding from 122.3 million units to approximately 12.2 million units. All units and per unit data 
included in these consolidated financial statements have been retroactively restated to reflect the reverse unit split.

Oil and Gas Royalty Properties Sale

In February 2016, the Partnership sold royalty and overriding royalty interests in several producing properties located in the 
Appalachian Basin for $36.6 million in net cash proceeds and recorded a gain of $20.3 million.  The sale included royalty and 
overriding royalty interests in approximately 765 gross producing wells as of December 31, 2015 and approximately 10% of our 
estimated proved reserves as of December 31, 2015, or 1,094 MBoe. The effective date of the sale was January 1, 2016.

Aggregate Royalty Properties Sale

In February 2016, we sold the aggregates reserves and related royalty rights at three aggregates operations located in Texas, 
Georgia and Tennessee, which comprised approximately 27%, or 139 million tons, of our estimated aggregates reserves as of 
December 31, 2015 for $9.8 million in net cash proceeds and recorded a gain of $1.6 million. The effective date of the sale was 
February 1, 2016.

109

NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES
(Unaudited)

The Partnership prepared the following oil and gas information in accordance with the authoritative guidance for oil and gas 

extractive activities.

Capitalized Costs (in thousands):

Proven properties
Unproven properties

Total property, plant, and equipment
Accumulated depreciation, depletion, and amortization

Net capitalized costs

Costs incurred for property acquisitions, exploration, and development (in thousands):

Property acquisitions
Proven properties
Unproven properties

Development
Total

Results of Operations for Producing Activities (in thousands):

Production revenue
Royalty and overriding royalty revenue (1)
Total oil and gas related revenue
Operating costs and expense:

Depreciation, depletion and amortization
Property, franchise and other taxes
Production costs
Impairment of oil and gas properties
Total operating costs and expense
Total income from operations

For the Years  Ended
December 31,

2015

2014

199,404
—
199,404
(60,542)
138,862

$

$

392,153
46,400
438,553
(18,993)
419,560

For the Years  Ended
December 31,

2015

2014

— $
—
29,080
29,080

$

298,627
40,800
5,340
344,767

For the Years  Ended
December 31,

2015

2014

$

49,201
4,364
53,565

40,772
5,210
12,871
367,576
426,429
(372,864) $

48,834
10,732
59,566

23,936
5,529
12,544
—
42,009
17,557  

$

$

$

$

$

$

(1) Includes $0.4 million and $1.9 million for the years ended December 31, 2015 and 2014, respectively of nonproduction 

revenues including lease bonus payments

Estimated Proved Reserves

Proved reserves are those quantities of crude oil and natural gas, which, by analysis of geoscience and engineering data, can 
be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under 
existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the 
right to operate expire, unless evidence indicates renewal is reasonably certain. In connection with the estimation of proved reserves, 
the term "reasonable certainty" implies a high degree of confidence that the quantities of crude oil, natural gas liquids and/or natural 
gas actually recovered will equal or exceed the estimate. The Partnership estimated proved reserves as of December 31, 2015 and 
2014 were prepared by Netherland, Sewell & Associates, Inc., the Partnership’s independent reserve engineer. To achieve reasonable 
certainty, Netherland Sewell employed technologies that have been demonstrated to yield results with consistency and repeatability. 
The technologies and economic data used in the estimation of the Partnership’s proved reserves include, but are not limited to, 
well  logs,  geologic  maps  including  isopach  and  structure  maps,  analogy  and  statistical  analysis,  and  available  downhole  and 
production data and well test data. Netherland Sewell prepared its report covering properties representing 100% of the Partnership’s 
estimated proved reserves as of December 31 2015 and 2014. Prices were calculated using the unweighted average of the first-

110

 
 
 
NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES
(Unaudited)

day-of-the-month  pricing  for  the  twelve  months  ended  December  31,  2015  and  2014.  These  prices  were  then  adjusted  for 
transportation and other costs. There can be no assurance that the proved reserves will be produced as estimated or that the prices 
and costs will remain constant. There are numerous uncertainties inherent in estimating reserves and related information and 
different reserve engineers often arrive at different estimates for the same properties. A copy of Netherland Sewell’s summary 
report is included as Exhibit 99.2 to this Annual Report on Form 10-K.

The following tables shows our estimated domestic proved reserves and reserve additions and revisions: 

December 31, 2014

Revisions of previous estimates
Extensions, discoveries and other additions
Sales of properties
Production

December 31, 2015 (1)

Proved developed reserves as of December 31, 2015
Proved undeveloped reserves as of December 31, 2015

Proved developed reserves as of December 31, 2014
Proved undeveloped reserves as of December 31, 2014

Crude
Oil
(MBbl)

NGLs
(MBbl)

Natural
Gas
(MMcf)(2)

Total
Proved
Reserves
(MBoe)(3)

9,983
(1,451)
776
(98)
(1,136)
8,074

7,862
212

8,930
1,053

1,229
89
60
—
(156)
1,222

1,196
26

1,098
131

14,370
701
541
(62)
(2,226)
13,324

13,157
167

13,161
1,209

13,607
(1,244)
926
(108)
(1,663)
11,518

11,251
267

12,221
1,386

(1)  Includes reserves attributable to the Partnership's 51% member interest in BRP LLC.

(2)  Natural gas is converted on the basis of six Mcf of gas per one Bbl of oil equivalent. This ratio reflects an energy content 

equivalency and not a price or revenue equivalency.

(3)  Includes 10,063MBoe of estimated proved reserves attributable to the Partnership’s non-operated working interests in 
oil and natural gas properties in the Williston Basin, approximately 3% of which were proved undeveloped reserves.

The standardized measure of discounted future net cash flows from our estimated proved oil and gas reserves is as follows 

(in thousands):

For the Years  Ended
December 31,

2015

2014

$

364,352

$

920,454

(164,649)
(7,826)
191,877
(75,524)
116,353

$

(312,666)
(20,072)
587,716
(282,519)
305,197

Future cash inflows
Less related future:
Production costs
Development and abandonment costs

Future net cash flows before 10% discount
Discount to present value at a 10% annual rate

Total standardized measure of discounted net cash flows

$

111

 
 
NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES
(Unaudited)

The table below is a summary of the changes in the standardized measure of discounted future net cash flows for our proved 

oil and gas reserves during the year ended December 31, 2015 (in thousands):

Beginning of the period

Revisions to previous estimates:
Changes in prices and costs
Changes in quantities
Changes in future development costs

Previously estimated development costs incurred during the period
Additions to proved reserves from extensions, discoveries and improved recovery, less related costs
Purchases and sales of reserves in place, net
Accretion of discount
Sales of oil and gas, net of production costs
Production timing and other
Net increase (decrease)

End of period

$

305,197

(188,946)
(11,750)
(12,202)
29,080
11,928
(3,851)
31,795
(35,112)
(9,786)
(188,844)
116,353

$

112

NATURAL RESOURCE PARTNERS L.P.
SUPPLEMENTAL QUARTERLY INFORMATION 
(Unaudited)

Quarterly Financial Data 

The following table summarizes quarterly financial data for 2015 and 2014 (in thousands, except per unit data):

2015
Total revenues and other income

Depreciation, depletion and amortization

Asset impairment

Income (loss) from operations

Net income (loss)

Net income (loss) per limited partner unit

Weighted average number of common units
outstanding

2014
Total revenues and other income
Depreciation, depletion and amortization
Asset impairment
Income from operations
Net income
Net income per limited partner unit
Weighted average number of common units
outstanding

First
Quarter
$ 109,677

$ 25,392

$

—

$ 40,417

$ 17,489

$

1.40

Second
Quarter
$ 137,630

$ 30,660

Third
Quarter
$ 125,479

$ 26,624

Fourth
Quarter
$ 116,063

$ 18,152

$

3,803 (1)

$ 55,920

$ 32,578

$

2.50

$ 626,838 (2)
$(576,290)
$(600,001)
(47.90)
$

$ 50,953 (3)

$
2,042
$ (21,786)
(1.75)
$

Total
2015
$ 488,849

$ 100,828

$ 681,594
$(477,911)
$(571,720)
(45.75)
$

12,230

12,230

12,230

12,230

12,230

First
Quarter
$ 80,309
$ 14,647
$
—
$ 52,439
$ 32,605
2.90
$

Second
Quarter
$ 90,561
$ 16,350
$
$ 50,403
$ 31,407
2.80
$

5,624 (4)

Third
Quarter
$ 91,609
$ 18,621
$
—
$ 55,027
$ 36,173
3.20
$

Fourth
Quarter
$ 137,273
$ 30,258
$ 20,585 (5)
$ 31,050
8,645
$
0.70
$

Total
2014
$ 399,752
$ 79,876
26,209
$ 188,919
$ 108,830
9.42
$

10,985

11,040

11,124

12,145

11,326

(1)  During the second quarter of 2015 we recorded a $2.3 million impairment expense related to a coal preparation plant and 

a $1.5 million impairment expense related to coal mineral rights.

(2)  During the third quarter of 2015 we recorded $335.7 million of oil and gas property impairment, $247.8 million of coal 

property impairment and $43.4 million of aggregates property impairment. 

(3)  During the fourth quarter of 2015 we recorded $31.9 million of oil and gas property impairment, $8.2 million of coal 
property impairment, $5.5 million of goodwill impairment, $4.7 million related to coal processing and transportation assets 
as well as obsolete equipment at our Logan office as well as a $0.7 million impairment expense related to obsolete plant 
and equipment at VantaCore.

(4)  During the second quarter of 2014, we recorded $5.6 million of intangible asset impairment related to an aggregates lease.

(5)  During the fourth quarter of 2014, we recorded $16.8 million of coal property impairment and $3.0 million of aggregates 
property impairment as well as $0.8 million in impairment expense related to a coal preparation plant. that began with 
current realized pricing as of the measurement date and included an adjustment for risk related to the future realization of 
cash flows.

113

ITEM  9.    CHANGES  IN AND  DISAGREEMENTS  WITH ACCOUNTANTS  ON ACCOUNTING AND  FINANCIAL 
DISCLOSURE

None.

ITEM 9A.  CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as 
defined in Rule 13a-15(e) of the Exchange Act) as of December 31, 2015. This evaluation was performed under the supervision 
and with the participation of our management, including the Chief Executive Officer and Chief Financial Officer of GP Natural 
Resource Partners LLC, our managing general partner. Based upon that evaluation, the Chief Executive Officer and Chief Financial 
Officer concluded that these disclosure controls and procedures were effective as of December 31, 2015 at the reasonable assurance 
level in producing the timely recording, processing, summary and reporting of information and in accumulation and communication 
of information to management to allow for timely decisions with regard to required disclosures.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such 
term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Under the supervision and with the participation of our management, 
including the Chief Executive Officer and Chief Financial Officer of GP Natural Resource Partners LLC, our managing general 
partner, we conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2015 
based on the framework in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway Commission "2013 Framework" (COSO). Based on that evaluation, our management concluded that our internal control 
over financial reporting was effective as of December 31, 2015. No changes were made to our internal control over financial 
reporting during the last fiscal quarter that materially affected, or are reasonably likely to materially affect, our internal control 
over financial reporting.

Ernst & Young, LLP, the independent registered public accounting firm who audited the Partnership’s consolidated financial 
statements included in this Annual Report on Form 10-K, has issued a report on the Partnership’s internal control over financial 
reporting, which is included herein.

Report of Independent Registered Public Accounting Firm

The Partners of Natural Resource Partners L.P.

We have audited Natural Resource Partners L.P.’s internal control over financial reporting as of December 31, 2015, based 
on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway Commission (2013 framework) (the COSO criteria). Natural Resource Partners L.P.’s management is responsible for 
maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over 
financial  reporting  included  in  the  accompanying  Management’s  Report  on  Internal  Control  over  Financial  Reporting.  Our 
responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal 
control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal 
control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating 
effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in 
the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that 
(1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 
of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation 

114

 
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the 
company are being made only in accordance with authorizations of management and directors of the company; and (3) provide 
reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because 
of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Natural Resource Partners L.P. maintained, in all material respects, effective internal control over financial 

reporting as of December 31, 2015, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
the consolidated balance sheet of Natural Resource Partners L.P. as of December 31, 2015 and 2014, and the related consolidated 
statements  of  comprehensive  income  (loss),  partners’  capital  and  cash  flows  for  each  of  the  three  years  in  the  period  ended 
December 31, 2015 and our report dated March 11, 2016 expressed an unqualified opinion there thereon.

/s/    Ernst & Young LLP

Houston, Texas
March 11, 2016

ITEM 9B.  OTHER INFORMATION

None.

115

 
PART III

ITEM  10.    DIRECTORS  AND  EXECUTIVE  OFFICERS  OF  THE  MANAGING  GENERAL  PARTNER  AND 
CORPORATE GOVERNANCE

As a master limited partnership we do not employ any of the people responsible for the management of our properties. 
Instead,  we  reimburse  affiliates  of  our  managing  general  partner,  GP  Natural  Resource  Partners  LLC,  for  their  services. The 
following table sets forth information concerning the directors and officers of GP Natural Resource Partners LLC as of January 31, 
2016. Each officer and director is elected for their respective office or directorship on an annual basis. Unless otherwise noted 
below, the individuals served as officers or directors of the partnership since the initial public offering. Subject to the Investor 
Rights Agreement with Adena Minerals, LLC, Mr. Robertson is entitled to nominate ten directors to the Board of Directors of GP 
Natural Resource Partners LLC. Mr. Robertson has delegated the right to nominate two of the directors, one of whom must be 
independent, to Adena Minerals. 

Name
Corbin J. Robertson, Jr.
Wyatt L. Hogan
Craig W. Nunez
Christopher J. Zolas
Kevin J. Craig
David M. Hartz
Kathy H. Roberts
Kathryn S. Wilson
Gregory F. Wooten
Robert T. Blakely
Russell D. Gordy
Donald R. Holcomb
Robert B. Karn III
S. Reed Morian
Richard A. Navarre
Corbin J. Robertson, III
Stephen P. Smith
Leo A. Vecellio, Jr.

Age

Position with the General
Partner

68 Chairman of the Board and Chief Executive Officer
44 President and Chief Operating Officer
54 Chief Financial Officer and Treasurer
41 Chief Accounting Officer
47 Executive Vice President, Coal
42 Vice President, Oil and Gas
64 Vice President, Investor Relations
41 Vice President, General Counsel and Secretary
59 Vice President, Chief Engineer
74 Director
65 Director
59 Director
74 Director
70 Director
55 Director
45 Director
55 Director
69 Director

(cid:38)(cid:82)(cid:85)(cid:69)(cid:76)(cid:81)(cid:3)(cid:45)(cid:17)(cid:3)(cid:53)(cid:82)(cid:69)(cid:72)(cid:85)(cid:87)(cid:86)(cid:82)(cid:81)(cid:15)(cid:3)(cid:45)(cid:85)(cid:17) has served as Chief Executive Officer and Chairman of the Board of Directors of GP Natural Resource 
Partners LLC since 2002.  Mr. Robertson has vast business experience having founded and served as a director and as an officer 
of multiple companies, both private and public, and has served on the boards of numerous non-profit organizations.  He has served 
as the Chief Executive Officer and Chairman of the Board of the general partners of Western Pocahontas Properties Limited 
Partnership since 1986, Great Northern Properties Limited Partnership since 1992, Quintana Minerals Corporation since 1978, 
and as Chairman of the Board of Directors of New Gauley Coal Corporation since 1986.  He also serves as a Principal with Quintana 
Capital Group, Chairman of the Board of the Cullen Trust for Higher Education and on the boards of the American Petroleum 
Institute, the National Petroleum Council, the Baylor College of Medicine and the Spirit Golf Association.  In 2006, Mr. Robertson 
was inducted into the Texas Business Hall of Fame. Mr. Robertson is the father of Corbin J. Robertson, III.

(cid:58)(cid:92)(cid:68)(cid:87)(cid:87)(cid:3)(cid:47)(cid:17)(cid:3)(cid:43)(cid:82)(cid:74)(cid:68)(cid:81) has served as President and Chief Operating Officer of GP Natural Resource Partners LLC since March 
2015.  From September 2014 through February 2015, Mr. Hogan served as President of GP Natural Resource Partners LLC.  
Mr. Hogan was Executive Vice President of GP Natural Resource Partners from December 2013 through August 2014 and Vice 
President, General Counsel and Secretary of GP Natural Resource Partners from May 2003 to December 2013. Mr. Hogan joined 
NRP in 2003 from Vinson & Elkins L.L.P., where he practiced corporate and securities law from August 2000 through April 2003. 
Mr. Hogan also serves as Executive Vice President of Quintana Minerals Corporation, New Gauley Coal Corporation, the general 
partner  of  Western  Pocahontas  Properties  Limited  Partnership  and  the  general  partner  of  Great  Northern  Properties  Limited 
Partnership, and from 2003 to October 2013, Mr. Hogan served as General Counsel and Secretary of those entities. He is also a 
member of the Board of Directors of Quintana Minerals Corporation and represents NRP as one of its appointees to the Board of 
116

 
 
Managers of Ciner Wyoming LLC.  Mr. Hogan also serves as a member of the Board of the National Mining Association and the 
American Coalition for Clean Coal Electricity. Mr. Hogan has been involved in numerous charitable organizations and currently 
serves as Chairman of the Board of Kids’ Meals, Inc. and is on the Boards of the Kinkaid Investment Foundation and the Kinkaid 
Alumni Association. 

(cid:38)(cid:85)(cid:68)(cid:76)(cid:74)(cid:3)(cid:58)(cid:17)(cid:3)(cid:49)(cid:88)(cid:81)(cid:72)(cid:93) has served as Chief Financial Officer and Treasurer of GP Natural Resource Partners LLC since January 
2015.  Prior to joining NRP, Mr. Nunez was an owner and Chief Executive Officer of Bocage Group, a private investment company 
specializing in energy, natural resources and master limited partnerships since March 2012.  In addition, until joining NRP, he was 
a FINRA-registered Investment Advisor Representative with Searle & Co since July 2012 and served as an Executive Advisor to 
Capital One Asset Management since January 2014.  From September 2011 through March 2012, Mr. Nunez served as the Executive 
Vice President and Chief Financial Officer of Quicksilver Resources Canada, Inc.  Mr. Nunez was Senior Vice President and 
Treasurer of Halliburton Company from January 2007 until September 2011, and Vice President and Treasurer of Halliburton 
Company from February 2006 to January 2007.  Prior to that, he was Treasurer of Colonial Pipeline Company from November 
1995 to February 2006.  Mr. Nunez has been involved in numerous charitable organizations and currently serves on the boards of 
Goodwill Industries of Houston and Medical Bridges, Inc. 

(cid:38)(cid:75)(cid:85)(cid:76)(cid:86)(cid:87)(cid:82)(cid:83)(cid:75)(cid:72)(cid:85)(cid:3)(cid:45)(cid:17)(cid:3)(cid:61)(cid:82)(cid:79)(cid:68)(cid:86) has served as Chief Accounting Officer of GP Natural Resource Partners since March 2015. Prior to 
joining NRP, Mr. Zolas served as Director of Financial Reporting at Cheniere Energy, Inc., a publicly traded energy company, 
where he performed financial statement preparation and analysis, technical accounting and SEC reporting for five separate SEC 
registrants, including a master limited partnership.  Mr. Zolas joined Cheniere Energy, Inc. in 2007 as Manager of SEC Reporting 
and Technical Accounting and was promoted to Director in 2009. Prior to joining Cheniere Energy, Inc., Mr. Zolas worked in 
public accounting with KPMG LLP from 2002 to 2007.

(cid:46)(cid:72)(cid:89)(cid:76)(cid:81)(cid:3)(cid:45)(cid:17)(cid:3)(cid:38)(cid:85)(cid:68)(cid:76)(cid:74) has served as Executive Vice President, Coal of GP Natural Resource Partners since September 2014.  Mr. 
Craig was the Vice President of Business Development for GP Natural Resource Partners LLC since 2005.  Mr. Craig also represents 
NRP as one of its appointees to the Board of Managers of Ciner Wyoming LLC.  Mr. Craig joined NRP in 2005 from CSX 
Transportation, where he served as Terminal Manager for the West Virginia Coalfields.  He has extensive marketing and finance 
experience with CSX since 1996.  Mr. Craig also served as a Delegate to the West Virginia House of Delegates having been elected 
in 2000 and re-elected in 2002, 2004, 2006, 2008, 2010 and 2012.  Mr. Craig most recently served as Chairman of the Committee 
on Energy.  Mr. Craig did not seek re-election in 2014 and his term ended January 2015.  Prior to joining CSX, he served as a 
Captain in the United States Army. Mr. Craig served as the Chairman of the Huntington Regional Chamber of Commerce Board 
of Directors and as a Director for the West Virginia Chamber of commerce and is involved in numerous state coal associations. 
Mr. Craig also represents NRP as one of its appointees to the Board of Managers of Ciner Wyoming LLC.

(cid:39)(cid:68)(cid:89)(cid:76)(cid:71)(cid:3)(cid:48)(cid:17)(cid:3)(cid:43)(cid:68)(cid:85)(cid:87)(cid:93) has served as Vice President, Oil and Gas of GP Natural Resource Partners LLC since December 2013.  He 
served as Director, Oil and Gas from 2011 to December 2013.  Prior to joining NRP, Mr. Hartz served as Director of Scotia 
Waterous, the oil and gas investment banking group within Scotia Capital from 2007 until 2011 where he was involved in oil and 
gas acquisition and divestiture transactions throughout the United States.  Prior to investment banking, Mr. Hartz served in a variety 
of technical positions as a petroleum geologist for Texaco and Hess within several U.S. and international petroleum basins.  He is 
a member of IPAA, Houston Producers Forum, as well as numerous state oil and gas associations.

(cid:46)(cid:68)(cid:87)(cid:75)(cid:92)(cid:3)(cid:43)(cid:17)(cid:3)(cid:53)(cid:82)(cid:69)(cid:72)(cid:85)(cid:87)(cid:86) is Vice President, Investor Relations of GP Natural Resource Partners LLC.  Ms. Roberts joined NRP in 
July 2002.  She was the Principal of IR Consulting Associates from 2001 to July 2002 and from 1980 through 2000 held various 
financial and investor relations positions with Santa Fe Energy Resources, most recently as Vice President-Public Affairs.  She is 
a Certified Public Accountant.  Ms. Roberts currently serves on the Board of Directors of the Master Limited Partnership Association 
and has served on the local board of directors of the National Investor Relations Institute. She has also served on the Executive 
Committee and as a National Vice President of the Institute of Management Accountants. 

(cid:46)(cid:68)(cid:87)(cid:75)(cid:85)(cid:92)(cid:81)(cid:3)(cid:54)(cid:17)(cid:3)(cid:58)(cid:76)(cid:79)(cid:86)(cid:82)(cid:81) has served as Vice President, General Counsel and Secretary of GP Natural Resource Partners LLC since 
December 2013.  Ms. Wilson served as Associate General Counsel from March 2013 to December 2013.  Since October 2013, 
Ms. Wilson  has  also  served  as  General  Counsel  and  Secretary  of  each  of  Quintana  Minerals  Corporation,  New  Gauley  Coal 
Corporation, the general partner of Western Pocahontas Properties Limited Partnership, and the general partner of Great Northern 
Properties Limited Partnership.  Ms. Wilson practiced corporate and securities law with Vinson & Elkins L.L.P. from September 
2001 to February 2010 and from November 2011 to February 2013.  Ms. Wilson served as General Counsel of Antero Resources 
Corporation from March 2010 to June 2011.

117

(cid:42)(cid:85)(cid:72)(cid:74)(cid:82)(cid:85)(cid:92)(cid:3)(cid:41)(cid:17)(cid:3)(cid:58)(cid:82)(cid:82)(cid:87)(cid:72)(cid:81) has served as Vice President, Chief Engineer of GP Natural Resource Partners LLC since December 2013.  
Mr. Wooten joined NRP in 2007, serving as Regional Manager. Prior to joining NRP, Mr. Wooten served as Vice President, COO 
and Chief Engineer of Dingess Rum Properties, Inc., where he managed coal, oil, gas and timber properties from 1982 until 2007. 
Prior to 1982, Mr. Wooten worked as a planning and production engineer in the coal industry and is a member of the American 
Institute of Mining, Metallurgical, and Petroleum Engineers.

(cid:53)(cid:82)(cid:69)(cid:72)(cid:85)(cid:87)(cid:3)(cid:55)(cid:17)(cid:3)(cid:37)(cid:79)(cid:68)(cid:78)(cid:72)(cid:79)(cid:92) joined the Board of Directors of GP Natural Resource Partners LLC in January 2003. Mr. Blakely has 
extensive public company experience having served as Executive Vice President and Chief Financial Officer for several companies. 
From January 2006 until August 2007, he served as Executive Vice President and Chief Financial Officer of Fannie Mae, and from 
August  2007  to  January  2008  as  an  Executive Vice  President  at  Fannie  Mae.  From  mid-2003  through  January  2006,  he  was 
Executive Vice President and Chief Financial Officer of MCI, Inc. He previously served as Executive Vice President and Chief 
Financial Officer of Lyondell Chemical from 1999 through 2002, Executive Vice President and Chief Financial Officer of Tenneco, 
Inc. from 1981 until 1999 as well as a Managing Director at Morgan Stanley. He served until December 31, 2011 as a Trustee of 
the Financial Accounting Foundation and is a trustee emeritus of Cornell University. He has served on the Board of Westlake 
Chemical Corporation since August 2004. In 2009, Mr. Blakely joined the Boards of Directors of Ally Financial (formerly GMAC, 
Inc.), where he serves as Chairman of the Audit Committee, and Greenhill & Co.

(cid:53)(cid:88)(cid:86)(cid:86)(cid:72)(cid:79)(cid:79)(cid:3)(cid:39)(cid:17)(cid:3)(cid:42)(cid:82)(cid:85)(cid:71)(cid:92) joined the Board of Directors of GP Natural Resource Partners in October 2013.  Mr. Gordy brings extensive 
oil and gas industry, mineral interest and land ownership and financial experience to the Board.  Mr. Gordy is currently managing 
partner and majority owner in SG Interests, a producer of oil and coal bed methane gas, RGGS, which controls mineral acres 
currently producing oil and gas, coal, iron ore, limestone, and copper, and Rock Creek Ranch. He is also President of Gordy Oil 
Company, an oil and gas exploration company in the Gulf Coast of Texas and Louisiana, and Gordy Gas Corporation, an oil and 
gas exploration company in the San Juan Basin of Colorado and New Mexico. Prior to forming SG Interests in 1989, Mr. Gordy 
was a founding partner of Northwind Exploration Company an exploration company created in 1981 with former Houston Oil and 
Minerals employees. Mr. Gordy served on the board of directors of Houston Exploration Company from 1987 until 2001.

(cid:39)(cid:82)(cid:81)(cid:68)(cid:79)(cid:71)(cid:3)(cid:53)(cid:17)(cid:3)(cid:43)(cid:82)(cid:79)(cid:70)(cid:82)(cid:80)(cid:69)  joined the Board of Directors of GP Natural Resource Partners LLC in October 2013. Mr. Holcomb 
brings financial and coal company experience to the Board of Directors. Mr. Holcomb is currently the Chief Executive Officer of 
Dickinson Fuel Company, Inc., the managing general partner of Dickinson Properties Limited Partnership, a land company in 
West Virginia. He is also the owner and manager of Ikes Fork, LLC and Hanover Property Management LLC. From 2001 to March 
31, 2013, Mr. Holcomb served as Chief Financial Officer for Foresight Reserves LP and its subsidiaries, which companies are 
affiliated with Christopher Cline.  Mr. Holcomb also serves as trustee of various trusts affiliated with the Cline family. Prior to 
joining Foresight, Mr. Holcomb held a variety of executive management positions, including at Banner Coal & Land Company, 
Inc., Patriot Automotive Group, Atlantic Mine Supply Company, Inc., and Wind River Consulting, LLC. Mr. Holcomb is a retired 
Certified Public Accountant.

(cid:53)(cid:82)(cid:69)(cid:72)(cid:85)(cid:87)(cid:3)(cid:37)(cid:17)(cid:3)(cid:46)(cid:68)(cid:85)(cid:81)(cid:3)(cid:44)(cid:44)(cid:44) joined the Board of Directors of GP Natural Resource Partners LLC in 2002. Mr. Karn brings extensive 
financial and coal industry experience to the Board of Directors. He currently is a consultant and serves on the Board of Directors 
of various entities. He was the partner in charge of the coal mining practice worldwide for Arthur Andersen from 1981 until his 
retirement in 1998. He retired as Managing Partner of the St. Louis office’s Financial and Economic Consulting Practice. Mr. Karn 
is a Certified Public Accountant, Certified Fraud Examiner and has served as president of numerous organizations. He also currently 
serves on the Board of Directors of Peabody Energy Corporation, Kennedy Capital Management, Inc. and the Board of Trustees 
of numerous publicly listed closed-end, mutual and exchange traded funds of the Guggenheim family of funds.

(cid:54)(cid:17)(cid:3)(cid:53)(cid:72)(cid:72)(cid:71)(cid:3)(cid:48)(cid:82)(cid:85)(cid:76)(cid:68)(cid:81) joined the Board of Directors of GP Natural Resource Partners LLC in 2002. Mr. Morian has vast executive 
business experience having served as Chairman and Chief Executive Officer of several companies since the early 1980s and serving 
on the board of other companies. Mr. Morian has served as a member of the Board of Directors of the general partner of Western 
Pocahontas Properties Limited Partnership since 1986, New Gauley Coal Corporation since 1992 and the general partner of Great 
Northern Properties Limited Partnership since 1992. Mr. Morian worked for Dixie Chemical Company from 1971 to 2006 and 
served as its Chairman and Chief Executive Officer from 1981 to 2006. He has also served as Chairman, Chief Executive Officer 
and President of DX Holding Company since 1989. He formerly served on the Board of Directors for the Federal Reserve Bank 
of Dallas-Houston Branch from April 2003 until December 2008 and as a Director of Prosperity Bancshares, Inc. from March 
2005 until April 2009.

(cid:53)(cid:76)(cid:70)(cid:75)(cid:68)(cid:85)(cid:71)(cid:3)(cid:36)(cid:17)(cid:3)(cid:49)(cid:68)(cid:89)(cid:68)(cid:85)(cid:85)(cid:72) joined the Board of Directors of GP Natural Resource Partners LLC in October 2013. Mr. Navarre brings 
extensive financial, strategic planning, public company and coal industry experience to the Board of Directors. From 1993 until 

118

2012, Mr. Navarre held several executive positions with Peabody Energy Corporation, including President-Americas from March 
2012 to June 2012, President and Chief Commercial Officer from January 2008 to March 2012, Executive Vice President of 
Corporate Development and Chief Financial Officer from July 2006 to January 2008 and Chief Financial Officer from October 
1999 to June 2008. Since his retirement from Peabody Energy in 2012, Mr. Navarre has provided advisory services to the coal 
industry and private equity firms. Mr. Navarre serves on the Board of Directors of Civeo Corporation, where he serves as Chairman 
of the Audit Committee. He is a member of the Hall of Fame of the College of Business and a member of the Board of Advisors 
of the College of Business and Administration of Southern Illinois University Carbondale. He is a member of the Board of Directors 
of the Foreign Policy Association and is the former Chairman of the Bituminous Coal Operators’ Association and former advisor 
to the New York Mercantile Exchange. Mr. Navarre is a Certified Public Accountant. Mr. Navarre also has been involved in 
numerous charitable organizations throughout his career.

(cid:38)(cid:82)(cid:85)(cid:69)(cid:76)(cid:81)(cid:3)(cid:45)(cid:17)(cid:3)(cid:53)(cid:82)(cid:69)(cid:72)(cid:85)(cid:87)(cid:86)(cid:82)(cid:81)(cid:15)(cid:3)(cid:44)(cid:44)(cid:44) joined the Board of Directors of GP Natural Resource Partners LLC in May 2013.  Mr. Robertson 
has experience with investments in a variety of energy businesses, having served both in management of private equity firms and 
having served on several boards of directors. Mr. Robertson has served as a Co-Managing Partner of LKCM Headwater Investments 
GP, LLC and LKCM Headwater Investments I, L.P., a private equity fund, since June 2011. He has served as the Chief Executive 
Officer of the general partner of Western Pocahontas Properties Limited Partnership since May 2008, and has served on the Board 
of Directors of Western Pocahontas since October 2012. Mr. Robertson also co-founded Quintana Energy Partners, an energy-
focused private equity firm in 2006, and served as a Managing Director thereof from 2006 until December 2010. Mr. Robertson 
has  served  on  the  Board  of  Directors  for  Quintana  Minerals  Corporation  since  October  2007,  and  previously  served  as Vice 
President-Acquisitions for GP Natural Resource Partners LLC from 2003 until 2005. Mr. Robertson also serves on the Board of 
Directors of the general partner of Genesis Energy L.P., a publicly traded master limited partnership, as well as Corsa Coal Corp, 
Buckhorn Energy Services and LL&B Minerals, each of which is in the energy business. Mr. Robertson is the son of Corbin J. 
Robertson, Jr.

(cid:54)(cid:87)(cid:72)(cid:83)(cid:75)(cid:72)(cid:81)(cid:3)(cid:51)(cid:17)(cid:3)(cid:54)(cid:80)(cid:76)(cid:87)(cid:75) joined the Board of Directors of GP Natural Resource Partners LLC in 2004. Mr. Smith brings extensive 
public company financial experience in the power and energy industries to the Board of Directors. Mr. Smith has served as Chief 
Financial Officer and Chief Accounting Officer of the general partner of Columbia Pipeline Partners L.P. since December 2014 
and as a Director since September 2014.  Mr. Smith also serves as Executive Vice President and Chief Financial Officer of Columbia 
Pipeline Group.  Mr. Smith served as Executive Vice President and Chief Financial Officer for NiSource, Inc. from June 2008 to 
June 2015.  Prior to joining NiSource, he held several positions with American Electric Power Company, Inc, including Senior 
Vice President - Shared Services from January 2008 to June 2008, Senior Vice President and Treasurer from January 2004 to 
December 2007, and Senior Vice President - Finance from April 2003 to December 2003. From November 2000 to January 2003, 
Mr. Smith served as President and Chief Operating Officer - Corporate Services for NiSource Inc. Prior to joining NiSource, Mr. 
Smith served as Deputy Chief Financial Officer for Columbia Energy Group from November 1999 to November 2000 and Chief 
Financial Officer for Columbia Gas Transmission Corporation and Columbia Gulf Transmission Company from 1996 to 1999.

(cid:47)(cid:72)(cid:82)(cid:3)(cid:36)(cid:17)(cid:3)(cid:57)(cid:72)(cid:70)(cid:72)(cid:79)(cid:79)(cid:76)(cid:82)(cid:15)(cid:3)(cid:45)(cid:85)(cid:17) joined the Board of Directors of GP Natural Resource Partners LLC in May 2007. Mr. Vecellio brings 
extensive experience in the aggregates and coal mine development industry to the Board of Directors. Mr. Vecellio and his family 
have been in the aggregates materials and construction business since the late 1930s. Since November 2002, Mr. Vecellio has 
served as Chairman and Chief Executive Officer of Vecellio Group, Inc, a major aggregates producer, contractor and oil terminal 
developer/operator in the Mid-Atlantic and Southeastern states. For nearly 30 years prior to that time Mr. Vecellio served in various 
capacities with Vecellio & Grogan, Inc., having most recently served as Chairman and Chief Executive Officer from April 1996 
to November 2002. Mr. Vecellio is the former Chairman of the American Road and Transportation Builders and is a longtime 
member of the Florida Council of 100, as well as many other civic and charitable organizations.

Corporate Governance

(cid:34)(cid:79)(cid:65)(cid:82)(cid:68)(cid:0)(cid:33)(cid:84)(cid:84)(cid:69)(cid:78)(cid:68)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:37)(cid:88)(cid:69)(cid:67)(cid:85)(cid:84)(cid:73)(cid:86)(cid:69)(cid:0)(cid:51)(cid:69)(cid:83)(cid:83)(cid:73)(cid:79)(cid:78)(cid:83)

The Board met 11 times in 2015. During that period, every director attended all of the Board meetings, with the exception 
of Mr. Blakely, Mr. Vecellio, Mr. Gordy, Mr. Holcomb and Corbin J. Robertson, III, who each missed one meeting. During 2015, 
our non-management directors met in executive session several times. The presiding director was Mr. Blakely, the Chairman of 
our Compensation, Nominating and Governance Committee, or CNG Committee. In addition, our independent directors met one 
time  in  executive  session  in  December  2015.  Mr. Blakely  was  the  presiding  director  at  that  meeting.  Interested  parties  may 
communicate with our non-management directors by writing a letter to the Chairman of the CNG Committee, NRP Board of 
Directors, 1201 Louisiana Street, Suite 3400, Houston, Texas 77002.

119

(cid:41)(cid:78)(cid:68)(cid:69)(cid:80)(cid:69)(cid:78)(cid:68)(cid:69)(cid:78)(cid:67)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:36)(cid:73)(cid:82)(cid:69)(cid:67)(cid:84)(cid:79)(cid:82)(cid:83)

The Board of Directors has affirmatively determined that Messrs. Blakely, Gordy, Karn, Navarre, Smith and Vecellio are 
independent based on all facts and circumstances considered by the Board, including the standards set forth in Section 303A.02
(a)  of  the  NYSE’s  listing  standards. Although  we  had  a  majority  of  independent  directors  in  2015,  because  we  are  a  limited 
partnership as defined in Section 303A of the NYSE’s listing standards, we are not required to do so. The Board has an Audit 
Committee, a Compensation, Nominating and Governance Committee, and a Conflicts Committee, each of which is staffed solely 
by independent directors.

(cid:33)(cid:85)(cid:68)(cid:73)(cid:84)(cid:0)(cid:35)(cid:79)(cid:77)(cid:77)(cid:73)(cid:84)(cid:84)(cid:69)(cid:69)

Our Audit Committee is comprised of Robert B. Karn III, who serves as chairman, Robert T. Blakely, Richard A. Navarre 
and Stephen P. Smith. Mr. Karn, Mr. Blakely, Mr. Navarre and Mr. Smith are "Audit Committee Financial Experts" as determined 
pursuant to Item 407 of Regulation S-K. Mr. Blakely currently serves on four audit committees. In accordance with the rules of 
the NYSE, our Board of Directors has made the determination that Mr. Blakely’s service on four audit committees does not impair 
his ability to serve effectively on our audit committee.

(cid:50)(cid:69)(cid:80)(cid:79)(cid:82)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:33)(cid:85)(cid:68)(cid:73)(cid:84)(cid:0)(cid:35)(cid:79)(cid:77)(cid:77)(cid:73)(cid:84)(cid:84)(cid:69)(cid:69)

Our Audit  Committee  is  composed  entirely  of  independent  directors.  The  members  of  the Audit  Committee  meet  the 
independence and experience requirements of the New York Stock Exchange. The Committee has adopted, and annually reviews, 
a charter outlining the practices it follows. The charter complies with all current regulatory requirements. The Audit Committee 
Charter is available on our website at (cid:90)(cid:90)(cid:90)(cid:17)(cid:81)(cid:85)(cid:83)(cid:79)(cid:83)(cid:17)(cid:70)(cid:82)(cid:80) and is available in print upon request.

During 2015, at each of its meetings, the Committee met with the senior members of our financial management team, our 
general counsel and our independent auditors. The Committee had private sessions at certain of its meetings with our independent 
auditors and the senior members of our financial management team and the general counsel at which candid discussions of financial 
management, accounting and internal control and legal issues took place.

The Committee approved the engagement of Ernst & Young LLP as our independent auditors for the year ended December 31, 
2015 and reviewed with our financial managers and the independent auditors overall audit scopes and plans, the results of internal 
and external audit examinations, evaluations by the auditors of our internal controls and the quality of our financial reporting.

Management has reviewed the audited financial statements in the Annual Report with the Audit Committee, including a 
discussion of the quality, not just the acceptability, of the accounting principles, the reasonableness of significant accounting 
judgments and estimates, and the clarity of disclosures in the financial statements. In addressing the quality of management’s 
accounting judgments, members of the Audit Committee asked for management’s representations and reviewed certifications 
prepared by the Chief Executive Officer and Chief Financial Officer that our unaudited quarterly and audited consolidated financial 
statements fairly present, in all material respects, our financial condition and results of operations, and have expressed to both 
management and auditors their general preference for conservative policies when a range of accounting options is available.

The Committee also discussed with the independent auditors other matters required to be discussed by the auditors with the 
Committee by PCAOB Auditing Standard No. 16, (cid:38)(cid:82)(cid:80)(cid:80)(cid:88)(cid:81)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:3)(cid:58)(cid:76)(cid:87)(cid:75)(cid:3)(cid:36)(cid:88)(cid:71)(cid:76)(cid:87)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)(cid:86)(cid:17) The Committee received and discussed 
with the auditors their annual written report on their independence from the partnership and its management, which is made under 
Rule  3526,  (cid:38)(cid:82)(cid:80)(cid:80)(cid:88)(cid:81)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:58)(cid:76)(cid:87)(cid:75)(cid:3)(cid:36)(cid:88)(cid:71)(cid:76)(cid:87)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)(cid:86)(cid:3)(cid:38)(cid:82)(cid:81)(cid:70)(cid:72)(cid:85)(cid:81)(cid:76)(cid:81)(cid:74)(cid:3)(cid:44)(cid:81)(cid:71)(cid:72)(cid:83)(cid:72)(cid:81)(cid:71)(cid:72)(cid:81)(cid:70)(cid:72)(cid:15)   and  considered  with  the  auditors  whether  the 
provision of non-audit services provided by them to the partnership during 2015 was compatible with the auditors’ independence.

In performing all of these functions, the Audit Committee acts only in an oversight capacity. The Committee reviews our 
Quarterly Reports on Form 10-Q and Annual Reports on Form 10-K prior to filing with the Securities and Exchange Commission. 
In 2015, the Committee also reviewed quarterly earnings announcements with management and representatives of the independent 
auditor in advance of their issuance. In its oversight role, the Committee relies on the work and assurances of our management, 
which has the primary responsibility for financial statements and reports, and of the independent auditors, who, in their report, 
express an opinion on the conformity of our annual financial statements with U.S. generally accepted accounting principles.

120

In  reliance  on  these  reviews  and  discussions,  and  the  report  of  the  independent  auditors,  the  Audit  Committee  has 
recommended to the Board of Directors, and the Board has approved, that the audited financial statements be included in our 
Annual Report on Form 10-K for the year ended December 31, 2015, for filing with the Securities and Exchange Commission.

Robert B. Karn III, Chairman

Robert T. Blakely

Richard A. Navarre

Stephen P. Smith

(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:12)(cid:0)(cid:46)(cid:79)(cid:77)(cid:73)(cid:78)(cid:65)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:79)(cid:86)(cid:69)(cid:82)(cid:78)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:35)(cid:79)(cid:77)(cid:77)(cid:73)(cid:84)(cid:84)(cid:69)(cid:69)

Executive officer compensation is administered by the CNG Committee, which is comprised of four members. Mr. Blakely, 
the Chairman, has served on this Committee since 2003. Mr. Karn has served on the Committee since 2002. Mr. Vecellio joined 
the  committee  in  2007,  and  Mr. Gordy  joined  the  Committee  in  2013. The  CNG  Committee  has  reviewed  and  approved  the 
compensation arrangements described in the Compensation Discussion and Analysis section of this Annual Report on Form 10-
K. Our Board of Directors appoints the CNG Committee and delegates to the CNG Committee responsibility for:

• 

• 

• 

reviewing and approving the compensation for our executive officers in light of the time that each executive officer allocates 
to our business;

reviewing and recommending the annual and long-term incentive plans in which our executive officers participate; and

reviewing and approving compensation for the Board of Directors.

Our Board of Directors has determined that each CNG Committee member is independent under the listing standards of the 

NYSE and the rules of the SEC.

Pursuant to its charter, the CNG Committee is authorized to obtain at NRP’s expense compensation surveys, reports on the 
design and implementation of compensation programs for directors and executive officers and other data that the CNG Committee 
considers as appropriate. In addition, the CNG Committee has the sole authority to retain and terminate any outside counsel or 
other experts or consultants engaged to assist it in the evaluation of compensation of our directors and executive officers. The 
CNG Committee Charter is available on our website at (cid:90)(cid:90)(cid:90)(cid:17)(cid:81)(cid:85)(cid:83)(cid:79)(cid:83)(cid:17)(cid:70)(cid:82)(cid:80) and is available in print upon request.

(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:22)(cid:8)(cid:65)(cid:9)(cid:0)(cid:34)(cid:69)(cid:78)(cid:69)(cid:70)(cid:73)(cid:67)(cid:73)(cid:65)(cid:76)(cid:0)(cid:47)(cid:87)(cid:78)(cid:69)(cid:82)(cid:83)(cid:72)(cid:73)(cid:80)(cid:0)(cid:50)(cid:69)(cid:80)(cid:79)(cid:82)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:76)(cid:73)(cid:65)(cid:78)(cid:67)(cid:69)

Section 16(a) of the Exchange Act requires directors, officers and persons who beneficially own more than ten percent of a 
registered class of our equity securities to file with the SEC and the NYSE initial reports of ownership and reports of changes in 
ownership of their equity securities. These people are also required to furnish us with copies of all Section 16(a) forms that they 
file. Based solely upon a review of the copies of Forms 3, 4 and 5 furnished to us, or written representations from certain reporting 
persons that no Forms 5 were required for transactions occurring in 2014 and except as described below, we believe that our officers 
and directors and persons who beneficially own more than ten percent of a registered class of our equity securities complied with 
all filing requirements with respect to transactions in our equity securities during 2015. On December 18, 2015, David M. Hartz 
filed a Form 4 reporting the sale of 1,368 common units in the open market on October 29, 2015 that had not been previously 
reported on a timely basis.

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Investors  may  view  our  partnership  agreement  and  the  amendments  to  the  partnership  agreement  on  our  website  at 
(cid:90)(cid:90)(cid:90)(cid:17)(cid:81)(cid:85)(cid:83)(cid:79)(cid:83)(cid:17)(cid:70)(cid:82)(cid:80). The partnership agreement and the amendments are also filed with the SEC and are available in print to any 
unitholder that requests them.

121

(cid:35)(cid:79)(cid:82)(cid:80)(cid:79)(cid:82)(cid:65)(cid:84)(cid:69)(cid:0)(cid:39)(cid:79)(cid:86)(cid:69)(cid:82)(cid:78)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:39)(cid:85)(cid:73)(cid:68)(cid:69)(cid:76)(cid:73)(cid:78)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:35)(cid:79)(cid:68)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:34)(cid:85)(cid:83)(cid:73)(cid:78)(cid:69)(cid:83)(cid:83)(cid:0)(cid:35)(cid:79)(cid:78)(cid:68)(cid:85)(cid:67)(cid:84)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:37)(cid:84)(cid:72)(cid:73)(cid:67)(cid:83)

We have adopted Corporate Governance Guidelines. We have also adopted a Code of Business Conduct and Ethics that 
applies to our management, and complies with Item 406 of Regulation S-K. Our Corporate Governance Guidelines and our Code 
of Business Conduct and Ethics are available on our website at (cid:90)(cid:90)(cid:90)(cid:17)(cid:81)(cid:85)(cid:83)(cid:79)(cid:83)(cid:17)(cid:70)(cid:82)(cid:80) and are available in print upon request.

(cid:46)(cid:57)(cid:51)(cid:37)(cid:0)(cid:35)(cid:69)(cid:82)(cid:84)(cid:73)(cid:70)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

Pursuant to Section 303A of the NYSE Listed Company Manual, in 2015, Corbin J. Robertson, Jr. certified to the NYSE 

that he was not aware of any violation by the Partnership of NYSE corporate governance listing standards.

ITEM 11.  EXECUTIVE COMPENSATION

Compensation Discussion and Analysis

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As a publicly traded partnership, we have a unique employment and compensation structure that is different from that of a 
typical public corporation. We have no employees, other than at the VantaCore operations, and our executive officers based in 
Houston, Texas are employed by Quintana Minerals Corporation and our executive officers based in Huntington, West Virginia 
are employed by Western Pocahontas Properties Limited Partnership, both of which are our affiliates.  For a more detailed description 
of our structure, see "Item 1. Business—Partnership Structure and Management" in this Annual Report on Form 10-K. Although 
our executives’ salaries and bonuses are paid directly by the private companies that employ them, we reimburse those companies 
based on the time allocated to NRP by each executive officer. Our reimbursement for the compensation of executive officers is 
governed by our partnership agreement. The information presented in this Item 11. does not give effect to the one-for-ten reverse 
unit split that was effective on February 17, 2016.

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Under our partnership agreement, we are required to distribute all of our available cash each quarter.  Historically, our primary 
business objective was to generate cash flows at levels that could sustain long-term quarterly cash distributions to our investors.  
However, given the collapse of the coal and oil markets over the past year, coupled with the closure of the debt and equity capital 
markets to the energy space, our current objective is to preserve long-term equity value for our unitholders by using our excess 
free cash flow to reduce our leverage.  Our objective in determining the compensation of our executive officers is to retain qualified 
people to manage the business through a difficult market cycle.  Although we historically have not tied our compensation to 
achievement of specific financial targets or fixed performance criteria, we have reevaluated that strategy in light of current market 
conditions.  See "—2016 Cash Long-Term Incentive Plan" below.

The 2015 compensation for executive officers consisted of four primary components:

base salaries;

annual cash incentive awards, including cash payments made by our general partner based on the cash distributions it 
receives from the common units that it owns (which we refer to herein as "GP Bonus Awards");

long-term equity incentive compensation; and

perquisites and other benefits.

• 

• 

• 

• 

In December 2014, our CNG Committee reviewed the performance of the executive officers and the amount of time expected 
to be spent by each NRP officer on NRP business, and determined the salaries for each officer for 2015.  All of our named executive 
officers, other than Corbin J. Robertson, Jr., our Chairman and Chief Executive Officer, spent 97% or more of their time on NRP 
matters during 2015, and NRP bears the allocated cost of their time.  Mr. Robertson has historically spent approximately 50% of 
his time on NRP matters.  Mr. Robertson does not receive a salary or an annual bonus in his capacity as Chief Executive Officer. 
Rather, Mr. Robertson has historically been compensated exclusively through long-term phantom unit grants awarded by the CNG 
Committee and through GP Bonus Awards. Mr. Robertson also directly or indirectly owns in excess of 20% of the outstanding 
common units of NRP, and thus his interests are directly aligned with our unitholders.

122

 
In February of each year, the CNG Committee approves the year-end bonuses for the year just ended and long-term incentive 
awards for the executive officers. The CNG Committee considers the performance of the partnership, the performance of the 
individuals and the outlook for the future in determining the amounts of the awards.  In accordance with past practice, the CNG 
Committee met in February 2015 and approved the long-term incentive awards disclosed in the Summary Compensation Table 
below.  Because we are a partnership, tax and accounting conventions make it more costly for us to issue additional common units 
or options as incentive compensation. Consequently, we have no outstanding options or restricted units and currently have no plans 
to issue options or restricted units in the future.  Instead, we have traditionally issued phantom units, coupled with tandem distribution 
equivalent rights ("DERs"), to our executive officers that are paid in cash based on the average closing price of our common units 
for the 20-day trading period prior to vesting.  The phantom units and DERs typically vest four years from the date of grant.  In 
past years, these awards have served to align the executive officers’ interests with those of our unitholders.

During 2015, given the sharp decline in NRP’s unit price, the Board of Directors recognized that the value of the executive 
officers’ phantom unit awards and the decreased GP Bonus Awards no longer provided long-term incentive or retention value to 
management.  Accordingly, the Board authorized and directed the CNG Committee to begin a review of options for a new long-
term incentive program for NRP management to be adopted in 2016.  Upon the conclusion of this review, in February 2016, the 
CNG Committee elected not to award additional phantom units under the long-term incentive plan and instead adopted a new cash 
long-term incentive plan and recommended the new plan and forms of award agreements thereunder to the Board for approval.  
The Board approved the new plan and awards in February 2016 and approved awards to officers under the plan in March 2016.  
See "—2016 Cash Long-Term Incentive Plan" below.

(cid:50)(cid:79)(cid:76)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:37)(cid:88)(cid:80)(cid:69)(cid:82)(cid:84)(cid:83)

The CNG Committee did not retain any consultants to evaluate compensation of officers or directors with respect to 2015 
compensation.  Historically, the CNG Committee periodically has utilized consultants to get a basic sense of the market, but has 
considered the advice of the consultant as only one of many factors among the other items discussed in this compensation discussion 
and analysis.  For a more detailed description of the CNG Committee and its responsibilities, see "Item 10. Directors and Executive 
Officers of the Managing General Partner and Corporate Governance" in this Annual Report on Form 10-K.

During 2015, at the direction of the Board, the CNG Committee retained Meridian Compensation Partners ("Meridian") to 
advise on a new long-term incentive strategy to be implemented in 2016 in order to incentivize and retain management in light of 
the significant decrease in phantom unit award value and GP Bonus Awards.  See "—2016 Cash Long-Term Incentive Plan" below.  
In selecting Meridian as its compensation consultant, the CNG Committee assessed the independence of Meridian pursuant to 
SEC rules and considered, among other things, whether Meridian provides any other services to NRP, the policies of Meridian 
that are designed to prevent any conflict of interest between Meridian, the CNG Committee and NRP, any personal or business 
relationship between Meridian and a member of the CNG Committee or one of NRP’s executive officers and whether Meridian 
owned any of NRP’s common units.  In addition to the foregoing, the CNG Committee received documentation from Meridian 
addressing the firm’s independence.  Meridian was engaged directly by the CNG Committee, reports exclusively to the CNG 
Committee and does not provide any additional services to NRP.  The CNG Committee has concluded that Meridian is independent 
and does not have any conflicts of interest.  While management did cooperate with Meridian in collecting data with respect to 
NRP’s compensation programs, the CNG Committee determined that management had not attempted to influence Meridian’s 
review or recommendations.

(cid:50)(cid:79)(cid:76)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:47)(cid:85)(cid:82)(cid:0)(cid:37)(cid:88)(cid:69)(cid:67)(cid:85)(cid:84)(cid:73)(cid:86)(cid:69)(cid:0)(cid:47)(cid:70)(cid:70)(cid:73)(cid:67)(cid:69)(cid:82)(cid:83)(cid:0)(cid:73)(cid:78)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:48)(cid:82)(cid:79)(cid:67)(cid:69)(cid:83)(cid:83)

Mr. Hogan,  our  President  and  Chief  Operating  Officer,  provided  Mr.  Robertson  with  recommendations  relating  to  the 
executive  officers  other  than  himself  in  connection  with  the  evaluation  of  the  2015  compensation  programs.  Mr. Robertson 
considered those recommendations and provided the CNG Committee with recommendations for all of the executive officers other 
than himself.  Mr. Robertson relied on his personal experience in setting compensation over a number of years in determining the 
appropriate amounts for each employee, and considered each of the factors described elsewhere in this compensation discussion 
and  analysis.  Mr. Robertson  and  Mr. Hogan  attended  the  CNG  Committee  meetings  at  which  the  Committee  deliberated  and 
approved the compensation, but were excused from the meetings when the CNG Committee discussed their compensation. No 
other named executive officer assumed an active role in the evaluation or design of the 2015 executive officer compensation 
programs.

123

(cid:37)(cid:86)(cid:65)(cid:76)(cid:85)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:79)(cid:70)(cid:0)(cid:18)(cid:16)(cid:17)(cid:21)(cid:0)(cid:48)(cid:69)(cid:82)(cid:70)(cid:79)(cid:82)(cid:77)(cid:65)(cid:78)(cid:67)(cid:69)(cid:27)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:79)(cid:78)(cid:69)(cid:78)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

(cid:21)(cid:19)(cid:20)(cid:24)(cid:3)(cid:51)(cid:72)(cid:85)(cid:73)(cid:82)(cid:85)(cid:80)(cid:68)(cid:81)(cid:70)(cid:72)

During 2015, NRP’s Adjusted EBITDA and distributable cash flow, which the Board considers to be the critical measures 
in evaluating NRP’s operating performance, met or exceeded the guidance issued to the public markets in February 2015, as revised 
in August 2015.  Despite the rapidly deteriorating coal and oil and gas markets in 2015, we recorded Adjusted EBITDA in 2015 
of $292.1 million, which was essentially flat compared to our Adjusted EBITDA in 2014, and distributable cash flow of $197.0 
million, which exceeded market expectations and was down only 5% compared to 2014.  During 2015, as part of NRP’s strategic 
plan to pay down debt and improve its balance sheet and credit metrics, the Board reduced the cash distribution paid to unitholders 
by over 87%.  We used the cash savings from the distribution reduction to permanently reduce our outstanding debt by approximately 
$91.0 million.  The reduction in the distribution resulted in a significant decline in NRP’s unit price, which diminished the long-
term incentive and retention value of management’s phantom unit awards and GP Bonus Awards.  

(cid:37)(cid:68)(cid:86)(cid:72)(cid:3)(cid:54)(cid:68)(cid:79)(cid:68)(cid:85)(cid:76)(cid:72)(cid:86)

With the exception of Mr. Robertson, who, as described above, does not receive a salary for his services as Chief Executive 
Officer, our named executive officers are paid an annual base salary by Quintana Minerals Corporation ("Quintana") and Western 
Pocahontas Properties Limited Partnership ("Western Pocahontas") for services rendered to us by the executive officers during 
the fiscal year. We then reimburse Quintana and Western Pocahontas based on the time allocated by each executive officer to our 
business. The base salaries of our named executive officers are reviewed on an annual basis as well as at the time of a promotion 
or other material change in responsibilities. The CNG Committee reviews and approves the full salaries paid to each executive 
officer by Quintana and Western Pocahontas, based on both the actual time allocations to NRP in the prior year and the anticipated 
time  allocations  in  the  coming  year. Adjustments  in  base  salary  are  based  on  an  evaluation  of  individual  performance,  our 
partnership’s overall performance during the fiscal year and the individual’s contribution to our overall performance.

In determining salaries for NRP’s executive officers for 2015, at the December 2014 meeting, the CNG Committee considered 
the financial performance of NRP for the nine months ended September 30, 2014 as well as the projected financial performance 
of NRP for the fourth quarter of 2014 and for the year ending December 31, 2015.  The CNG Committee also considered the 
individual performance of each member of the executive management team during 2014 and the changes to the management team 
that became effective during the year. Based on its review, the CNG Committee approved the salaries disclosed in the Summary 
Compensation Table below.

(cid:36)(cid:81)(cid:81)(cid:88)(cid:68)(cid:79)(cid:3)(cid:38)(cid:68)(cid:86)(cid:75)(cid:3)(cid:44)(cid:81)(cid:70)(cid:72)(cid:81)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:36)(cid:90)(cid:68)(cid:85)(cid:71)(cid:86)

Each named executive officer participated in two cash incentive programs in 2015, with the exception of Mr. Robertson who 
did not participate in the cash bonus program. The first program is a discretionary cash bonus award approved in February 2016 
by the CNG Committee based on similar criteria used to evaluate the annual base salaries. The bonuses awarded with respect to 
2015 under this program are disclosed in the Summary Compensation Table under the Bonus column. As with the base salaries, 
there are no formulas or specific performance targets related to these awards. The bonuses for Mr. Hogan and Ms. Wilson were 
increased over the prior year in order to partially offset declines in their overall compensation due to the significant declines in 
phantom unit award value and GP Bonus Awards; however, in spite of the increased bonuses, total compensation earned in 2015 
by our named executive officers was significantly lower than total compensation earned in 2014.

Under  the  second  cash  incentive  program  (the  GP  Bonus Award  program),  our  general  partner  has  set  aside  the  cash 
distributions it receives on an annual basis with respect to distributions on NRP’s common units held by our general partner for 
awards to our executive officers, including Mr. Robertson.  Although Mr. Robertson has the sole discretion to determine the GP 
Bonus Awards allocated to each executive officer, including himself, the cash awards that our officers receive under this plan are 
reviewed by the CNG Committee and taken into account when making determinations with respect to salaries, bonuses and long-
term incentive awards. Unlike the discretionary cash bonus award described above, the GP Bonus Awards are paid by the general 
partner and not reimbursed by NRP.  However, because the GP Bonus Awards represent compensation to executive officers related 
to services provided to NRP, they are recorded by NRP as general and administrative expenses and equity contributions from the 
general partner.  Prior to 2015, we did not record the GP Bonus Awards cash compensation paid by the general partner as an 
expense.

124

The amounts received by the named executive officers (with the exception of Mr. Nunez, who was not employed by NRP 
during 2014) under the GP Bonus Award program were significantly lower for 2015 as compared to 2014 due to the 87% reduction 
in the per unit distribution paid by NRP during the calendar year ended December 31, 2015.  This decrease resulted in a decreased 
overall amount allocated to the executive officers.

(cid:47)(cid:82)(cid:81)(cid:74)(cid:16)(cid:55)(cid:72)(cid:85)(cid:80)(cid:3)(cid:44)(cid:81)(cid:70)(cid:72)(cid:81)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:38)(cid:82)(cid:80)(cid:83)(cid:72)(cid:81)(cid:86)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)

At the time of our initial public offering, we adopted the Natural Resource Partners Long-Term Incentive Plan for our directors 
and all the employees who perform services for NRP, including the executive officers.  Historically, we considered long-term 
equity-based incentive compensation to be the most important element of our compensation program for executive officers because 
we believed that these awards kept our officers focused on the growth of NRP, particularly the sustainability and long-term growth 
of quarterly distributions and their impact on our unit price, over an extended time horizon.  

Our CNG Committee has historically approved annual awards of phantom units that vest four years from the date of grant. 
The amounts included in the compensation table reflect the grant date fair value of the unit awards determined in accordance with 
FASB stock compensation authoritative guidance. NRP bears 100% of the costs of the phantom units. We structured the phantom 
unit awards so that our executive officers and directors directly benefited along with our unitholders when our unit price increases, 
and experienced reductions in the value of their incentive awards when our unit price declined. Similarly, because the awards are 
forfeited by the executives upon termination of employment in most instances, the long-term vesting component of these awards 
encouraged our senior executives and employees to remain with NRP over an extended period of time, thereby ensuring continuity 
in our management team.  Consistent with this approach, we included DERs as a possible award to be granted under the plan. The 
DERs are contingent rights, granted in tandem with phantom units, to receive upon vesting of the related phantom units an amount 
in cash equal to the cash distributions made by NRP with respect to the common units during the period in which the phantom 
units are outstanding.

As noted below, in light of current market conditions, the currently low value of NRP’s common units and the strategic plan 
to dedicate all free cash flow towards reducing NRP’s leverage, the CNG Committee determined that the phantom units and DERs 
awarded under the Long-Term Incentive Plan no longer held retentive value for NRP’s management team.  As a result, the CNG 
Committee recommended, and the Board approved, the 2016 Cash Long-Term Incentive Plan described below.

(cid:51)(cid:72)(cid:85)(cid:84)(cid:88)(cid:76)(cid:86)(cid:76)(cid:87)(cid:72)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:50)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:51)(cid:72)(cid:85)(cid:86)(cid:82)(cid:81)(cid:68)(cid:79)(cid:3)(cid:37)(cid:72)(cid:81)(cid:72)(cid:73)(cid:76)(cid:87)(cid:86)

Both  Quintana  and Western  Pocahontas  maintain  employee  benefit  plans  that  provide  our  executive  officers  and  other 
employees with the opportunity to enroll in health, dental and life insurance plans. Each of these benefit plans require the employee 
to pay a portion of the health and dental premiums, with the company paying the remainder. These benefits are offered on the same 
basis to all employees of Quintana and Western Pocahontas, and the company costs are reimbursed by us to the extent the employee 
allocates time to our business.

Quintana and Western Pocahontas also maintain tax-qualified 401(k) and defined contribution retirement plans. Quintana 
matches 100% of the first 4.5% of the employee contributions under the 401(k) plan and Western Pocahontas matches the employee 
contributions at a level of 100% of the first 3% of the contribution and 50% of the next 3% of the contribution. In addition, each 
company contributes 1/12 of each employee’s base salary to the defined contribution retirement plan on an annual basis. As with 
the other contributions, any amounts contributed by Quintana and Western Pocahontas are reimbursed by us based on the time 
allocated by the employee to our business. None of NRP, Quintana or Western Pocahontas maintains a pension plan or a defined 
benefit retirement plan.

(cid:18)(cid:16)(cid:17)(cid:22)(cid:0)(cid:35)(cid:65)(cid:83)(cid:72)(cid:0)(cid:44)(cid:79)(cid:78)(cid:71)(cid:13)(cid:52)(cid:69)(cid:82)(cid:77)(cid:0)(cid:41)(cid:78)(cid:67)(cid:69)(cid:78)(cid:84)(cid:73)(cid:86)(cid:69)(cid:0)(cid:48)(cid:76)(cid:65)(cid:78)

As  discussed  above,  in  February  2016,  the  CNG  Committee  adopted  a  new  cash-based  long-term  incentive  plan  and 
recommended the new plan and awards thereunder to the non-management members of the Board for approval.  The Board approved 
the new plan and the forms of long-term incentive award agreements in February 2016.  Under the new plan, the executive officers 
are eligible to receive two types of cash incentive awards: (1) time vesting awards that will vest 50% in February 2017 and 50% 
in February 2018, and (2) performance-based awards that will generally vest 50% upon the repayment, refinancing or rollover of 
the Opco revolving credit facility that matures in October 2017 and 50% upon the repayment, refinancing or rollover of NRP’s 
9.125% Senior Notes due October 2018, in each case as determined by the Board and depending upon the continued employment 
of the applicable executive officer.  Up to an additional 100% of the amount of the performance-based awards may be awarded to 

125

the executive officers in the sole discretion of the Board after considering additional performance criteria including, but not limited 
to, NRP’s common unit price, projected EBITDA, and leverage ratio.

In March 2016, the Board made awards under the new plan to NRP’s executive officers.  The awards made in March 2016 

to the named executive officers under the new cash long-term incentive plan are as follows:

2016 Cash Incentive Awards

Performance
Award Grant
Amount

Time Vesting
Award Grant
Amount

Total Grant
Amount

Total
Maximum
Payout Amount
(1)

Corbin J. Robertson, Jr. - Chairman and Chief Executive
Officer

$ 1,500,000

$

500,000

$ 2,000,000

$ 3,500,000

Wyatt L. Hogan - President and Chief Operating Officer

750,000

250,000

1,000,000

1,750,000

Craig W. Nunez - Chief Financial Officer and Treasurer

562,500

187,500

750,000

1,312,500

Kathryn S. Wilson - Vice President, General Counsel and
Secretary

450,000

150,000

600,000

1,050,000

Christopher J. Zolas - Chief Accounting Officer

150,000

150,000

300,000

450,000

(1)  Assumes the Board determines to award the discretional additional 100% of the performance-based award amounts.

(cid:53)(cid:78)(cid:73)(cid:84)(cid:0)(cid:47)(cid:87)(cid:78)(cid:69)(cid:82)(cid:83)(cid:72)(cid:73)(cid:80)(cid:0)(cid:50)(cid:69)(cid:81)(cid:85)(cid:73)(cid:82)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)

We do not have any policy guidelines that require specified ownership of our common units by our directors or executive 
officers or unit retention guidelines applicable to equity-based awards granted to directors or executive officers. As of December 31, 
2015, our named executive officers held 308,725 phantom units that have been granted as compensation. In addition, Mr. Robertson 
directly or indirectly owns in excess of 20% of the outstanding units of NRP.

(cid:51)(cid:69)(cid:67)(cid:85)(cid:82)(cid:73)(cid:84)(cid:73)(cid:69)(cid:83)(cid:0)(cid:52)(cid:82)(cid:65)(cid:68)(cid:73)(cid:78)(cid:71)(cid:0)(cid:48)(cid:79)(cid:76)(cid:73)(cid:67)(cid:89)

Our insider trading policy states that executive officers and directors may not purchase or sell puts or calls to sell or buy our 

common units, engage in short sales with respect to our common units, or buy our securities on margin.

(cid:52)(cid:65)(cid:88)(cid:0)(cid:41)(cid:77)(cid:80)(cid:76)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:37)(cid:88)(cid:69)(cid:67)(cid:85)(cid:84)(cid:73)(cid:86)(cid:69)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

Because we are a partnership, Section 162(m) of the Internal Revenue Code does not apply to compensation paid to our 
named executive officers and accordingly, the CNG Committee did not consider its impact in determining compensation levels in 
2013, 2014 or 2015.  The CNG Committee has taken into account the tax implications to the partnership in its decision to limit 
the long-term incentive compensation to phantom units as opposed to options or restricted units.  

(cid:33)(cid:67)(cid:67)(cid:79)(cid:85)(cid:78)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:41)(cid:77)(cid:80)(cid:76)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:37)(cid:88)(cid:69)(cid:67)(cid:85)(cid:84)(cid:73)(cid:86)(cid:69)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

The CNG Committee has considered the partnership accounting implications, particularly the "book-up" cost, of issuing 
equity as incentive compensation, and has determined that phantom units offer the best accounting treatment for the partnership 
while still motivating and retaining our executive officers.

126

(cid:50)(cid:69)(cid:80)(cid:79)(cid:82)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:12)(cid:0)(cid:46)(cid:79)(cid:77)(cid:73)(cid:78)(cid:65)(cid:84)(cid:73)(cid:78)(cid:71)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:39)(cid:79)(cid:86)(cid:69)(cid:82)(cid:78)(cid:65)(cid:78)(cid:67)(cid:69)(cid:0)(cid:35)(cid:79)(cid:77)(cid:77)(cid:73)(cid:84)(cid:84)(cid:69)(cid:69)

The CNG Committee has reviewed and discussed the Compensation Discussion and Analysis required by Item 402(b) of 
Regulation S-K with management. Based on the reviews and discussions referred to in the foregoing sentence, the CNG Committee 
recommended to the Board that the Compensation Discussion and Analysis be included in this Annual Report on Form 10-K for 
the year ended December 31, 2015.

Robert T. Blakely, Chairman
Russell D. Gordy
Robert B. Karn III
Leo A. Vecellio, Jr.

127

Summary Compensation Table

The following table sets forth the amounts reimbursed to affiliates of our general partner for compensation in 2013, 2014 

and 2015 based on each individual’s allocation of time to Natural Resource Partners:

Name and Principal Position (1)
Corbin J. Robertson, Jr. - Chief Executive
Officer

Wyatt L. Hogan - President and Chief
Operating Officer

Year
2015
2014
2013

2015
2014
2013

$ 400,000
377,654
344,970

$ 400,000
225,000
126,900

Salary

Cash Bonus

Phantom Unit
Awards (2)

All Other
Compensation
(3)

$

— $
—
—

— $
—
—

321,912
595,728
712,000

$

$

$

$

Total
321,912
595,728
712,000

— $
—   
—

$
33,783
33,336   
31,358   

994,739
822,155
725,728

33,783

$ 1,230,358

33,413   $
30,869   

608,612
543,251

$

$

$

160,956
186,165
222,500

446,575

84,949
121,007

Craig W. Nunez - Chief Financial Officer (4)

2015

$ 375,000

$ 375,000

Kathryn S. Wilson - Vice President, General
Counsel and Secretary (5)

2015 $ 315,250
291,375
2014

$ 175,000
100,000

Christopher J. Zolas - Chief Accounting
Officer (4)

2015

$ 244,932

$ 150,000

$

239,295

$

30,858

$

665,085

(1)  In 2015, Messrs. Robertson, Hogan, Nunez, Ms. Wilson and Mr. Zolas spent approximately 50%, 100%, 100%, 97% and 

100%, respectively, of their time on NRP matters. 

(2)  Amounts represent the grant date fair value of phantom unit awards determined in accordance with Accounting Standards 
Codification  Topic  718  determined  without  regard  to  forfeitures.  For  information  regarding  the  assumptions  used  in 
calculating these amounts, see Note 16 to the audited consolidated financial statements included elsewhere in this Annual 
Report on Form 10-K. Phantom unit awards granted in 2015 for Messrs. Nunez and Zolas, both of which were hired in 
2015, vest in February 2016 through 2019, while phantom unit awards granted in 2015 for Messrs. Robertson and Hogan 
and Ms. Wilson vest in 2019.

(3)  Includes portions of 401(k) matching and retirement contributions allocated to Natural Resource Partners by Quintana.

(4)  Messrs. Nunez and Zolas were not a named executive officer for purposes of this Summary Compensation Table during 

2014 or 2013. 

(5)  Ms. Wilson was not a named executive officer for purposes of this Summary Compensation Table during 2013.

128

 
The following table sets forth the GP Bonus Awards paid by the general partner and not reimbursed by NRP as described 

above. These GP Bonus Award amounts are not included in the summary compensation table.

Name and Principal Position
Corbin J. Robertson, Jr. - Chief Executive Officer

Wyatt L. Hogan - President and Chief Operating Officer

Craig W. Nunez - Chief Financial Officer

Kathryn S. Wilson - Vice President, General Counsel and Secretary

Christopher J. Zolas - Chief Accounting Officer

Grants of Plan-Based Awards in 2015

Year
2015
2014
2013

2015
2014
2013

2015

2015
2014

2015

Amount

160,000
180,000
456,000

160,000
384,000
391,000

160,000

125,000
180,000

52,000

$

$

$

$

$

The following table sets forth the grant date and fair value of phantom unit awards granted in 2015. 

Named Executive Officer
Corbin J. Robertson, Jr.
Wyatt L. Hogan
Craig W. Nunez (3)
Kathryn S. Wilson
Christopher J. Zolas (4)

Grant Date

Phantom Units (1)

Grant Date
Fair Value of
Unit Awards (2)

2/10/2015
2/10/2015
2/11/2015
2/10/2015
3/9/2015

$

36,000
18,000
50,000
9,500
30,000

321,912
160,956
446,575
84,949
239,295

(1)  The phantom units granted in February 2015 and vest in February 2019. The unit numbers in the table above do not give 

effect to NRP’s one-for-ten (1:10) reverse common unit split that became effective on February 17, 2016. 

(2)  Amounts represent the grant date fair value of phantom unit awards determined in accordance with Accounting Standards 
Codification Topic 718 determined without regard to forfeitures plus accumulated DERs. For information regarding the 
assumptions used in calculating these amounts, see Note 16 to the audited consolidated financial statements included 
elsewhere in this Annual Report on Form 10-K. 

(3)  Mr. Nunez received 11,000 phantom units that vested in February 2016 and 12,000, 13,000 and 14,000 phantom units that 

vest in February 2016, 2017, 2018 and 2019, respectively.  

(4)  Mr. Zolas received 6,000 phantom units that vested in February 2016 and 6,500, 8,000 and 8,500 phantom units that vest 

in February 2016, 2017, 2018 and 2019, respectively.  

None of our executive officers has an employment agreement, and the salary, bonus and phantom unit awards noted above 
are approved by the CNG Committee. See our disclosure under "—Compensation Discussion and Analysis" for a description of 
the factors that the CNG Committee considers in determining the amount of each component of compensation.

Subject to the rules of the exchange upon which the common units are listed at the time, the Board and the CNG Committee 
have the right to alter or amend the Long-Term Incentive Plan or any part of the Long-Term Incentive Plan from time to time. 
Except upon the occurrence of unusual or nonrecurring events, no change in any outstanding grant may be made that would 
materially reduce any award to a participant without the consent of the participant.

129

The CNG Committee may make grants under the Long-Term Incentive Plan to employees and directors containing such 
terms as it determines, including the vesting period. Outstanding grants vest upon a change in control of NRP, our general partner 
or GP Natural Resource Partners LLC. If a grantee’s employment or membership on the Board terminates for any reason, outstanding 
grants will be automatically forfeited unless and to the extent the CNG Committee provides otherwise.

As stated above under "—Compensation Discussion and Analysis," we have no outstanding option grants, and do not intend 
to grant any options or restricted unit awards in the future.  In addition, the CNG Committee determined to make cash long-term 
incentive awards in 2016 in lieu of phantom unit awards as described above under "—Compensation Discussion and Analysis—
2016 Cash Long-Term Incentive Plan."  The CNG Committee may determine to make additional awards of phantom units in the 
future.

Phantom Units Vested in 2015

The table below shows the phantom units that vested in 2015 with respect to each named executive officer, along with the 

phantom unit value realized by each individual:

Named Executive Officer
Corbin J. Robertson, Jr.
Wyatt L. Hogan
Craig W. Nunez
Kathryn S. Wilson
Christopher J. Zolas

Phantom Units
Vested in 2015 (1)
33,000
9,000
—
4,500
—

Value Realized on
2015 Vesting

$

295,350
80,550
—
40,275
—

(1)  The unit numbers in the table above do not give effect to NRP’s one-for-ten (1:10) reverse common unit split that became 

effective on February 17, 2016.

Outstanding Awards at December 31, 2015

The table below shows the total number of outstanding phantom units held by each named executive officer at December 31, 
2015. The phantom units shown below have been awarded over the last four years, with a portion of the phantom units having 
vesting in February 2016 and the remaining portion vesting in each of 2017, 2018 and 2019. 

Named Executive Officer
Corbin J. Robertson, Jr.
Wyatt L. Hogan
Craig W. Nunez
Kathryn S. Wilson
Christopher J. Zolas

Unvested
Phantom Units (1)

Market Value
of Unvested
Phantom Units (2)

133,600 (3) $
66,800 (4)
50,000 (5)
28,325 (6)
30,000 (7)

169,281
84,836
63,500
35,973
38,100

(1)  The unit numbers in the table above do not give effect to NRP’s one-for-ten (1:10) reverse common unit split that became 

effective on February 17, 2016.

(2)  Based on a unit price of $1.27, the closing price for the common units on December 31, 2015.  

(3)  Includes 32,000 phantom units vested in February 2016 and 32,000, 33,600 and 36,000 phantom units vesting in February 

2017, 2018 and 2019, respectively.

(4)  Includes 16,000 phantom units vested in February 2016 and 16,000, 16,800 and 18,000 phantom units vesting in February 

2017, 2018 and 2019, respectively. 

(5)  Includes 11,000 vested in February 2016 and 12,000, 13,000 and 14,000 phantom units vesting in February 2017, 2018 

and 2019, respectively. 

130

 
(6)  Includes 5,500 phantom units vested in February 2016, and 6,500, 6,825 and 9,500 phantom units vesting in February 

2017, 2018 and 2019, respectively. 

(7)  Includes 6,000 phantom units vested in February 2016 and 6,500, 8,000 and 9,500 phantom units vesting in February 2017, 

2018 and 2019, respectively.

Potential Payments upon Termination or Change in Control

None of our executive officers have entered into employment agreements with Natural Resource Partners or its affiliates. 
Consequently, there are no severance benefits payable to any executive officer upon the termination of their employment. Upon 
the occurrence of a change in control of NRP, our general partner or GP Natural Resource Partners LLC, the outstanding phantom 
unit awards held by each of our executive officers would immediately vest. The table below indicates the impact of a change in 
control on the outstanding equity-based awards at December 31, 2015, assuming a settlement value of $1.21 (the 20-day average 
of the common units as of December 31, 2015, as required pursuant to the terms of the phantom units). 

Named Executive Officer
Corbin J. Robertson, Jr.

Wyatt L. Hogan

Craig W. Nunez

Kathryn S. Wilson

Christopher J. Zolas

Unvested
Phantom
Units (1)

133,600

66,800

50,000

28,325

30,000

Market Value
of Phantom
Units
161,589

$

Accumulated
DERs
365,100

$

Total
Potential
Payments

$

526,689   

80,795

60,475

34,259

36,285

182,550

263,345   

11,250

56,728

6,750

71,725 (2)

90,987 (3)

43,035 (4)

(1)  The unit numbers in the table above do not give effect to NRP’s one-for-ten (1:10) reverse common unit split that became 

effective on February 17, 2016.

(2)  Phantom units vesting in 2016, 2017, 2018 and 2019 include accrued DERs from February 11, 2015, the date of the grant 

of these units to Mr. Nunez.

(3)  Phantom units vested in 2015 and phantom units vesting in 2016 and 2017 include accrued DERs from February 12, 2013, 

the date of the grant of these units to Ms. Wilson.

(4)  Phantom units vesting in 2016, 2017, 2018 and 2019 include accrued DERs from March 9, 2015, the date of the grant of 

these units to Mr. Zolas.

Directors’ Compensation for the Year Ended December 31, 2015

The table below shows the directors’ compensation for the year ended December 31, 2015. As with our named executive 

officers, we do not grant any options or restricted units to our directors:

Name of Director
Robert Blakely

Russell Gordy

Donald Holcomb

Robert Karn III

S. Reed Morian

Richard Navarre

Corbin J. Robertson, III

Stephen Smith

Leo A. Vecellio, Jr.

Fees Earned or Paid
in Cash (1)

Phantom Unit
Awards (2)(3)

Total

$

85,000

$

36,662

$

65,000

60,000

85,000

60,000

65,000

60,000

80,000

65,000

36,662

36,662

36,662

36,662

36,662

36,662

36,662

36,662

121,662

101,662

96,662

121,662

96,662

101,662

96,662

116,662
101,662  

131

 
(1)  In 2015, the annual retainer for the directors was $60,000, and the directors did not receive any additional fees for attending 
meetings. Each chairman of a committee received an annual fee of $10,000 for serving as chairman, and each committee 
member received $5,000 for serving on a committee.

(2)  Amounts represent the grant date fair value of unit awards determined in accordance with Accounting Standards Codification 
Topic 718 determined without regard to forfeitures. For information regarding the assumptions used in calculating these 
amounts, see Note 16 to the audited consolidated financial statements included elsewhere in this Annual Report on Form 
10-K.

(3)  As of December 31, 2015, each director held 15,385 phantom units, of which 3,700 phantom units vested in February 
2016, and 3,700, 3,885 and 4,100 phantom units will vest in February 2017, 2018 and 2019, respectively.  The awards 
amounts included in the foregoing sentence vesting in 2017, 2018 and 2019 do not give effect to NRP’s one-for-ten (1:10) 
reverse common unit split that became effective on February 17, 2016.  Phantom unit awards outstanding on the effective 
date of the reverse unit split were adjusted accordingly.

The table below shows the phantom units that vested in 2015 with respect to each Director, along with the value realized by 

each individual:

Director
Robert Blakely
Russell Gordy
Donald Holcomb
Robert Karn III
S. Reed Morian
Richard Navarre
Corbin J. Robertson, III
Stephen Smith
Leo A. Vecellio, Jr.

Phantom Units
Vested in 2015 (1)
3,580
3,580
3,580
3,580
3,580
3,580
3,580
3,580
3,580

Value Realized on
2015 Vesting

$

59,893
40,275
40,275
59,893
59,893
40,275
42,244
59,893
59,893

(1)  The unit numbers in the table above do not give effect to NRP’s one-for-ten (1:10) reverse common unit split that became 

effective on February 17, 2016.

Compensation Committee Interlocks and Insider Participation

During the year ended December 31, 2015, Messrs. Blakely, Gordy, Karn and Vecellio served on the CNG Committee. None 
of Messrs. Blakely, Gordy, Karn or Vecellio has ever been an officer or employee of NRP or GP Natural Resource Partners LLC. 
None of our executive officers serve as a member of the board of directors or compensation committee of any entity that has any 
executive officer serving as a member of our Board or CNG Committee.

132

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth, as of February 1, 2016, the amount and percentage of our common units beneficially held by 
(1) each person known to us to beneficially own 5% or more of any class of our units, (2) by each of the directors and executive 
officers and (3) by all directors and executive officers as a group. Unless otherwise noted, each of the named persons and members 
of the group has sole voting and investment power with respect to the units shown. The information presented in this Item 12. does 
not give effect to the one-for-ten reverse unit split that was effective on February 17, 2016.

Name of Beneficial Owner
Corbin J. Robertson, Jr. (2)
Western Pocahontas Properties Limited Parntership (3)
Wyatt L. Hogan(4)
Craig W. Nunez
Kevin J. Craig
David M. Hartz
Kathy H. Roberts
Kathryn S. Wilson
Gregory F. Wooten
Christopher J. Zolas
Robert T. Blakely
Russell D. Gordy(5)
Donald R. Holcomb(6)
Robert B. Karn III(7)
S. Reed Morian(8)
Richard A. Navarre
Corbin J. Robertson III(9)
Stephen P. Smith
Leo A. Vecellio, Jr.
Directors and Officers as a Group

*

Less than one percent.

Common
Units
24,346,308
17,279,860
12,500
—
18,000
—
20,000
—
—
—
22,500
70,000
5,469,950
5,634
6,161,588
10,000
1,727,892
3,552
20,000
37,887,924

Percentage  of
Common
Units(1)

19.9%
14.1%
*

—

*
*
*

—
—
—

*
*
4.5%
*
5.0%
*
1.4%
*
*
31.0%

(1)  Percentages based upon 122,299,825 common units issued and outstanding as of February 1, 2016. Unless otherwise noted, 

beneficial ownership is less than 1%.

(2)  Mr. Robertson may be deemed to beneficially own the 17,279,860 common units owned by Western Pocahontas Properties 
Limited Partnership, 5,627,120 common units held by Western Bridgeport, Inc., 110,206 common units held by Western 
Pocahontas Corporation and 56 common units held by QMP Inc. Also included are 31,540 common units held by Barbara 
Robertson, Mr. Robertson’s spouse. Mr. Robertson’s address is 1415 Louisiana Street, Suite 2400, Houston, Texas 77002. 
The 5,627,120 units held by Western Bridgeport are pledged as collateral for a loan.

(3)  These common units may be deemed to be beneficially owned by Mr. Robertson. The address of Western Pocahontas 

Properties Limited Partnership is 1415 Louisiana Street, Suite 2400, Houston, Texas 77002.

(4)  Of these common units, 500 common units are owned by the Anna Margaret Hogan 2002 Trust, 500 common units are 
owned by the Alice Elizabeth Hogan 2002 Trust, and 500 common units are held by the Ellen Catlett Hogan 2005 Trust. 
Mr. Hogan is a trustee of each of these trusts.

(5)  Mr. Gordy may be deemed to beneficially own 50,000 common units owned by Minion Trail, Ltd. and 20,000 common 

units owned by Rock Creek Ranch 1, Ltd.

(6)  Includes 5,349,816 common units held by Cline Trust Company LLC. Mr. Holcomb is a manager of Cline Trust Company 
and may be deemed to have voting or investment power over the common units held of record by Cline Trust Company. 
The members of Cline Trust Company are for trusts for the benefit of Christopher Cline, and Mr. Holcomb serves as trustee 
of each of those trusts. Mr. Holcomb disclaims beneficial ownership of the common units held by Cline Trust Company.

133

(7)  Includes 317 common units held by each of two trusts for the benefit of Mr. Karn’s grandchildren. Mr. Karn is the trustee 

of each of these trusts for his grandchildren, but disclaims beneficial ownership of these securities.

(8)  Mr. Morian may be deemed to beneficially own 3,448,624 common units owned by Shadder Investments and 600,972 
common units held by Mocol Properties. The 3,448,624 units owned by Shadder Investments are pledged as collateral for 
a loan agreement.

(9)  Mr. Robertson may be deemed to beneficially own 97,828 common units held CIII Capital Management, LLC, 100,000 
common units held by BHJ Investments, 50,461 common units held by The Corbin James Robertson III 2009 Family Trust 
and 387 common units held by his spouse, Brooke Robertson. The address for CIII Capital Management, LLC is 1415 
Louisiana Street, Suite 2400, Houston, Texas 77002, the address for BHJ Investments is 1415 Louisiana Street, Suite 2400, 
Houston, Texas 77002 and the address for The Corbin James Robertson III 2009 Family Trust is 1415 Louisiana Street, 
Suite 2400, Houston, Texas 77002. The following common units are pledged as collateral for loans: 295,413 common units 
owned directly by Mr. Robertson.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

Western Pocahontas Properties Limited Partnership, New Gauley Coal Corporation and Great Northern Properties Limited 
Partnership are three privately held companies that are primarily engaged in owning and managing mineral properties. We refer 
to these companies collectively as the WPP Group. Corbin J. Robertson, Jr. owns the general partner of Western Pocahontas 
Properties, 85% of the general partner of Great Northern Properties and is the Chairman and Chief Executive Officer of New 
Gauley Coal Corporation.

Omnibus Agreement

(cid:49)(cid:82)(cid:81)(cid:16)(cid:70)(cid:82)(cid:80)(cid:83)(cid:72)(cid:87)(cid:76)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:51)(cid:85)(cid:82)(cid:89)(cid:76)(cid:86)(cid:76)(cid:82)(cid:81)(cid:86)

As part of the omnibus agreement entered into concurrently with the closing of our initial public offering, the WPP Group 
and any entity controlled by Corbin J. Robertson, Jr., which we refer to in this section as the GP affiliates, each agreed that neither 
they nor their affiliates will, directly or indirectly, engage or invest in entities that engage in the following activities (each, a 
"restricted business") in the specific circumstances described below:

• 

• 

the entering into or holding of leases with a party other than an affiliate of the GP affiliate for any GP affiliate-owned 
fee coal reserves within the United States; and

the entering into or holding of subleases with a party other than an affiliate of the GP affiliate for coal reserves within 
the United States controlled by a paid-up lease owned by any GP affiliate or its affiliate.

"Affiliate" means, with respect to any GP affiliate or, any other entity in which such GP affiliate owns, through one or more 
intermediaries, 50% or more of the then outstanding voting securities or other ownership interests of such entity. Except as described 
below, the WPP Group and their respective controlled affiliates will not be prohibited from engaging in activities in which they 
compete directly with us.

A GP affiliate may, directly or indirectly, engage in a restricted business if:

• 

• 

• 

the GP affiliate was engaged in the restricted business at the closing of the offering; provided that if the fair market value 
of the asset or group of related assets of the restricted business subsequently exceeds $10 million, the GP affiliate must 
offer the restricted business to us under the offer procedures described below.

the asset or group of related assets of the restricted business have a fair market value of $10 million or less; provided 
that if the fair market value of the assets of the restricted business subsequently exceeds $10 million, the GP affiliate 
must offer the restricted business to us under the offer procedures described below.

the asset or group of related assets of the restricted business have a fair market value of more than $10 million and the 
general partner (with the approval of the conflicts committee) has elected not to cause us to purchase these assets under 
the procedures described below.

• 

its ownership in the restricted business consists solely of a non-controlling equity interest.

134

For purposes of this paragraph, "fair market value" means the fair market value as determined in good faith by the relevant 

GP affiliate.

The total fair market value in the good faith opinion of the WPP Group of all restricted businesses engaged in by the WPP 
Group, other than those engaged in by the WPP Group at closing of our initial public offering, may not exceed $75 million. For 
purposes of this restriction, the fair market value of any entity engaging in a restricted business purchased by the WPP Group will 
be determined based on the fair market value of the entity as a whole, without regard for any lesser ownership interest to be 
acquired.

If the WPP Group desires to acquire a restricted business or an entity that engages in a restricted business with a fair market 
value in excess of $10 million and the restricted business constitutes greater than 50% of the value of the business to be acquired, 
then the WPP Group must first offer us the opportunity to purchase the restricted business. If the WPP Group desires to acquire a 
restricted business or an entity that engages in a restricted business with a value in excess of $10 million and the restricted business 
constitutes 50% or less of the value of the business to be acquired, then the GP affiliate may purchase the restricted business first 
and then offer us the opportunity to purchase the restricted business within six months of acquisition. For purposes of this paragraph, 
"restricted business" excludes a general partner interest or managing member interest, which is addressed in a separate restriction 
summarized below. For purposes of this paragraph only, "fair market value" means the fair market value as determined in good 
faith by the relevant GP affiliate.

If we want to purchase the restricted business and the GP affiliate and the general partner, with the approval of the conflicts 
committee, agree on the fair market value and other terms of the offer within 60 days after the general partner receives the offer 
from the GP affiliate, we will purchase the restricted business as soon as commercially practicable. If the GP affiliate and the 
general partner, with the approval of the conflicts committee, are unable to agree in good faith on the fair market value and other 
terms of the offer within 60 days after the general partner receives the offer, then the GP affiliate may sell the restricted business 
to a third party within two years for no less than the purchase price and on terms no less favorable to the GP affiliate than last 
offered by us. During this two-year period, the GP affiliate may operate the restricted business in competition with us, subject to 
the restriction on total fair market value of restricted businesses owned in the case of the WPP Group.

If, at the end of the two year period, the restricted business has not been sold to a third party and the restricted business 
retains a value, in the good faith opinion of the relevant GP affiliate, in excess of $10 million, then the GP affiliate must reoffer 
the restricted business to the general partner. If the GP affiliate and the general partner, with the approval of the conflicts committee, 
agree on the fair market value and other terms of the offer within 60 days after the general partner receives the second offer from 
the GP affiliate, we will purchase the restricted business as soon as commercially practicable. If the GP Affiliate and the general 
partner, with the concurrence of the conflicts committee, again fail to agree after negotiation in good faith on the fair market value 
of the restricted business, then the GP affiliate will be under no further obligation to us with respect to the restricted business, 
subject to the restriction on total fair market value of restricted businesses owned.

In addition, if during the two-year period described above, a change occurs in the restricted business that, in the good faith 
opinion of the GP affiliate, affects the fair market value of the restricted business by more than 10 percent and the fair market value 
of the restricted business remains, in the good faith opinion of the relevant GP affiliate, in excess of $10 million, the GP affiliate 
will be obligated to reoffer the restricted business to the general partner at the new fair market value, and the offer procedures 
described above will recommence.

If the restricted business to be acquired is in the form of a general partner interest in a publicly held partnership or a managing 
member interest in a publicly held limited liability company, the WPP Group may not acquire such restricted business even if we 
decline to purchase the restricted business. If the restricted business to be acquired is in the form of a general partner interest in a 
non-publicly held partnership or a managing member of a non-publicly held limited liability company, the WPP Group may acquire 
such restricted business subject to the restriction on total fair market value of restricted businesses owned and the offer procedures 
described above.

The omnibus agreement may be amended at any time by the general partner, with the concurrence of the conflicts committee. 
The respective obligations of the WPP Group under the omnibus agreement terminate when the WPP Group and its affiliates cease 
to participate in the control of the general partner.

135

Restricted Business Contribution Agreement

In connection with our partnership with Christopher Cline and his affiliates, Mr. Cline, Foresight Reserves LP and Adena 
(collectively, the "Cline Parties") and NRP have executed a Restricted Business Contribution Agreement. Pursuant to the terms of 
the Restricted Business Contribution Agreement, the Cline Parties and their affiliates are obligated to offer to NRP any business 
owned, operated or invested in by the Cline Parties, subject to certain exceptions, that either (a) owns, leases or invests in hard 
minerals or (b) owns, operates, leases or invests in transportation infrastructure relating to future mine developments by the Cline 
Parties in Illinois. In addition, we created an area of mutual interest (the "AMI") around certain of the properties that we have 
acquired from Cline affiliates. During the applicable term of the Restricted Business Contribution Agreement, the Cline Parties 
will be obligated to contribute any coal reserves held or acquired by the Cline Parties or their affiliates within the AMI to us. In 
connection with the offer of mineral properties by the Cline Parties to NRP, the parties to the Restricted Business Contribution 
Agreement will negotiate and agree upon an area of mutual interest around such minerals, which will supplement and become a 
part of the AMI.

We have made several acquisitions from Cline affiliates pursuant to the Restricted Business Contribution Agreement. For a 
summary  of  recent  acquisitions  and  revenues  that  we  have  derived  from  the  Cline  relationship,  see  "Item  7.  Management’s 
Discussion and Analysis of Financial Condition and Results of Operations—Significant Acquisitions" and "—Transactions with 
Cline Affiliates."

Mr. Holcomb, who was appointed to the Board in October 2013, previously served as Chief Financial Officer for Foresight 
Reserves LP and its subsidiaries. Mr. Holcomb owned a less than 1% equity interest in certain Cline affiliates until March 2013 
when he fully divested from all Cline affiliates. As a result of his position as an executive officer and an equity holder of certain 
Cline affiliates, Mr. Holcomb may be deemed to have had an indirect material interest in the transactions with the Cline affiliates 
described in this Annual Report on Form 10-K.

Mr. Holcomb is a manager of Cline Trust Company, LLC, which owns approximately 0.54 million of our common units and 
$20 million in principal amount of our 9.125% Senior Notes due 2018. The members of the Cline Trust Company are four trusts 
for the benefit of the children of Christopher Cline, each of which owns an approximately equal membership interest in the Cline 
Trust Company. Mr. Holcomb also serves as trustee of each of the four trusts.

Investor Rights Agreement

NRP and certain affiliates and Adena executed an Investor Rights Agreement pursuant to which Adena was granted certain 
management rights. Specifically, Adena has the right to name two directors (one of which must be independent) to the Board of 
Directors of our managing general partner so long as Adena beneficially owns either 5% of our limited partnership interest or 5% 
of  our  general  partner’s  limited  partnership  interest  and  so  long  as  certain  rights  under  our  managing  general  partner’s  LLC 
Agreement have not been exercised by Adena or Mr. Robertson. Leo A. Vecellio and Donald R. Holcomb currently serve as Adena’s 
two directors. Mr. Vecellio serves on our CNG Committee. Adena will also have the right, pursuant to the terms of the Investor 
Rights Agreement, to withhold its consent to the sale or other disposition of any entity or assets contributed by Cline affiliates to 
NRP, and any such sale or disposition will be void without Adena’s consent.

Quintana Capital Group GP, Ltd.

Corbin J. Robertson, Jr. is a principal in Quintana Capital Group GP, Ltd., which controls several private equity funds focused 
on  investments  in  the  energy  business.  NRP’s  Board  of  Directors  has  adopted  a  formal  conflicts  policy  that  establishes  the 
opportunities that will be pursued by NRP and those that will be pursued by Quintana Capital. The basic tenets of the policy are 
set forth below.

NRP’s business strategy has historically focused on:

•  The ownership of natural resource properties in North America, including, but not limited to coal, aggregates and industrial 
minerals,  and  oil  and  gas.  NRP  leases  these  properties  to  mining  or  operating  companies  that  mine  or  produce  the 
resources and pay NRP a royalty.

•  The ownership and operation of transportation, storage and related logistics activities related to extracted hard minerals.

The businesses and investments described in this paragraph are referred to as the "NRP Businesses."

136

NRP’s acquisition strategy also includes:

•  The ownership of non-operating working interests in oil and gas properties.

•  The ownership of non-controlling equity interests in companies involved in natural resource development and extraction.

•  The operation of construction aggregates mining and production businesses.

The businesses and investments described in this paragraph are referred to as the "Shared Businesses."

NRP’s business strategy does not, and is not expected to, include:

•  The ownership of equity interests in companies involved in the mining or extraction of coal.

• 

• 

Investments that do not generate "qualifying income" for a publicly traded partnership under U.S. tax regulations.

Investments outside of North America.

•  Midstream  or  refining  businesses  that  do  not  involve  hard  extracted  minerals,  including  the  gathering,  processing, 

fractionation, refining, storage or transportation of oil, natural gas or natural gas liquids.

In addition, although NRP’s current oil and gas strategy is focused on the acquisition of minerals, royalties and non-operated 
working interests, NRP may also consider the acquisition of operated interests. The businesses and investments described in this 
paragraph are referred to as the "Non-NRP Businesses."

It is acknowledged that neither Quintana Capital nor Mr. Robertson will have any obligation to offer investments relating 
to Non-NRP Businesses to NRP, and that NRP will not have any obligation to refrain from pursuing a Non-NRP Business if there 
is a change in its business strategy.

For so long as Corbin Robertson, Jr. remains both an affiliate of Quintana Capital and an executive officer or director of 
NRP or an affiliate of its general partner, before making an investment in an NRP Business, Quintana Capital has agreed to adhere 
to the following procedures:

•  Quintana Capital will first offer such opportunity in its entirety to NRP. NRP may elect to pursue such investment wholly 

for its own account, to pursue the opportunity jointly with Quintana Capital or not to pursue such opportunity.

• 

If NRP elects not to pursue an NRP Business investment opportunity, Quintana Capital may pursue the investment for 
its own account on similar terms.

•  NRP will undertake to advise Quintana Capital of its decision regarding a potential investment opportunity within 10 

business days of the identification of such opportunity to the Conflicts Committee.

If the opportunity relates to the acquisition of a Shared Business, NRP and Quintana Capital will adhere to the following 

procedures:

• 

• 

If the opportunity is generated by individuals other than Mr. Robertson, the opportunity will belong to the entity for 
which those individuals are working.

If the opportunity is generated by Mr. Robertson and both NRP and Quintana Capital are interested in pursuing the 
opportunity, it is expected that the Conflicts Committee will work together with the relevant Limited Partner Advisory 
Committees for Quintana Capital to reach an equitable resolution of the conflict, which may involve investments by 
both parties.

In all cases above in which Mr. Robertson has a conflict of interest, investment decisions will be made on behalf of NRP by 
the Conflicts Committee and on behalf of Quintana Capital Group by the relevant Investment Committee, with Mr. Robertson 
abstaining.

A fund controlled by Quintana Capital owns an interest in Corsa Coal Corp, a coal mining company traded on the TSX 
Venture Exchange that is one of our lessees in Tennessee. Corbin J. Robertson, III, one of our directors, is Chairman of the Board 
of Corsa.

137

For more information on our relationship with Corsa Coal, see "Item 7. Management’s Discussion and Analysis of Financial 

Condition and Results of Operations—Related Party Transactions—Quintana Capital Group GP, Ltd."

Office Building in Huntington, West Virginia

We lease an office building in Huntington, West Virginia from Western Pocahontas Properties Limited Partnership. The 

terms of the lease, including $0.6 million per year in lease payments, were approved by our conflicts committee.

Conflicts of Interest

Conflicts of interest exist and may arise in the future as a result of the relationships between our general partner and its 
affiliates (including the WPP Group, the Cline entities, and their affiliates) on the one hand, and our partnership and our limited 
partners, on the other hand. The directors and officers of GP Natural Resource Partners LLC have duties to manage GP Natural 
Resource Partners LLC and our general partner in a manner beneficial to its owners. At the same time, our general partner has a 
duty to manage our partnership in a manner beneficial to us and our unitholders. The Delaware Revised Uniform Limited Partnership 
Act, which we refer to as the Delaware Act, provides that Delaware limited partnerships may, in their partnership agreements, 
expand, restrict or eliminate the fiduciary duties otherwise owed by a general partner to limited partners and the partnership. 
Pursuant to these provisions, our partnership agreement contains various provisions modifying the fiduciary duties that would 
otherwise be owed by our general partner with contractual standards governing the duties of the general partner and the methods 
of resolving conflicts of interest. Our partnership agreement also specifically defines the remedies available to limited partners 
for  actions  taken  that,  without  these  defined  liability  standards,  might  constitute  breaches  of  fiduciary  duty  under  applicable 
Delaware law.

Whenever a conflict arises between our general partner or its affiliates, on the one hand, and our partnership or any other 
partner, on the other, our general partner will resolve that conflict. Our general partner may, but is not required to, seek the approval 
of the conflicts committee of the Board of Directors of our general partner of such resolution. The partnership agreement contains 
provisions that allow our general partner to take into account the interests of other parties in addition to our interests when resolving 
conflicts of interest.

Our general partner will not be in breach of its obligations under the partnership agreement or its duties to us or our unitholders 
if the resolution of the conflict is considered to be fair and reasonable to us. Any resolution is considered to be fair and reasonable 
to us if that resolution is:

• 

• 

• 

approved by the conflicts committee, although our general partner is not obligated to seek such approval and our general 
partner may adopt a resolution or course of action that has not received approval;

on terms no less favorable to us than those generally being provided to or available from unrelated third parties; or

fair to us, taking into account the totality of the relationships between the parties involved, including other transactions 
that may be particularly favorable or advantageous to us.

In  resolving  a  conflict,  our  general  partner,  including  its  conflicts  committee,  may,  unless  the  resolution  is  specifically 

provided for in the partnership agreement, consider:

• 

• 

• 

• 

the relative interests of any party to such conflict and the benefits and burdens relating to such interest;

any customary or accepted industry practices or historical dealings with a particular person or entity;

generally accepted accounting practices or principles; and

such additional factors it determines in its sole discretion to be relevant, reasonable or appropriate under the circumstances.

Conflicts of interest could arise in the situations described below, among others.

(cid:33)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:84)(cid:65)(cid:75)(cid:69)(cid:78)(cid:0)(cid:66)(cid:89)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:65)(cid:70)(cid:70)(cid:69)(cid:67)(cid:84)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:65)(cid:77)(cid:79)(cid:85)(cid:78)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:67)(cid:65)(cid:83)(cid:72)(cid:0)(cid:65)(cid:86)(cid:65)(cid:73)(cid:76)(cid:65)(cid:66)(cid:76)(cid:69)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:68)(cid:73)(cid:83)(cid:84)(cid:82)(cid:73)(cid:66)(cid:85)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:84)(cid:79)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:14)

The amount of cash that is available for distribution to unitholders is affected by decisions of our general partner regarding 

such matters as:

• 

amount and timing of asset purchases and sales;

138

• 

• 

• 

• 

cash expenditures;

borrowings;

the issuance of additional common units; and

the creation, reduction or increase of reserves in any quarter.

In addition, borrowings by us and our affiliates do not constitute a breach of any duty owed by our general partner to the 

unitholders, including borrowings that have the purpose or effect of enabling our general partner to receive distributions.

For example, in the event we have not generated sufficient cash from our operations to pay the quarterly distribution on our 
common units, our partnership agreement permits us to borrow funds which may enable us to make this distribution on all outstanding 
common units.

The partnership agreement provides that we and our subsidiaries may borrow funds from our general partner and its affiliates. 

Our general partner and its affiliates may not borrow funds from us or our subsidiaries.

(cid:37)(cid:88)(cid:67)(cid:76)(cid:85)(cid:68)(cid:73)(cid:78)(cid:71)(cid:0)(cid:54)(cid:65)(cid:78)(cid:84)(cid:65)(cid:35)(cid:79)(cid:82)(cid:69)(cid:12)(cid:0)(cid:87)(cid:69)(cid:0)(cid:68)(cid:79)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:72)(cid:65)(cid:86)(cid:69)(cid:0)(cid:65)(cid:78)(cid:89)(cid:0)(cid:79)(cid:70)(cid:70)(cid:73)(cid:67)(cid:69)(cid:82)(cid:83)(cid:0)(cid:79)(cid:82)(cid:0)(cid:69)(cid:77)(cid:80)(cid:76)(cid:79)(cid:89)(cid:69)(cid:69)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:82)(cid:69)(cid:76)(cid:89)(cid:0)(cid:83)(cid:79)(cid:76)(cid:69)(cid:76)(cid:89)(cid:0)(cid:79)(cid:78)(cid:0)(cid:79)(cid:70)(cid:70)(cid:73)(cid:67)(cid:69)(cid:82)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:69)(cid:77)(cid:80)(cid:76)(cid:79)(cid:89)(cid:69)(cid:69)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:39)(cid:48)(cid:0)(cid:46)(cid:65)(cid:84)(cid:85)(cid:82)(cid:65)(cid:76)(cid:0)
(cid:50)(cid:69)(cid:83)(cid:79)(cid:85)(cid:82)(cid:67)(cid:69)(cid:0)(cid:48)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:83)(cid:0)(cid:44)(cid:44)(cid:35)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:73)(cid:84)(cid:83)(cid:0)(cid:65)(cid:70)(cid:70)(cid:73)(cid:76)(cid:73)(cid:65)(cid:84)(cid:69)(cid:83)(cid:14)

Excluding our VantaCore business, we do not have any officers or employees and rely solely on officers and employees of 
GP Natural Resource Partners LLC and its affiliates. Affiliates of GP Natural Resource Partners LLC conduct businesses and 
activities of their own in which we have no economic interest. If these separate activities are significantly greater than our activities, 
there could be material competition for the time and effort of the officers and employees who provide services to our general 
partner. The officers of GP Natural Resource Partners LLC are not required to work full time on our affairs. These officers devote 
significant time to the affairs of the WPP Group or its affiliates and are compensated by these affiliates for the services rendered 
to them.

(cid:55)(cid:69)(cid:0)(cid:82)(cid:69)(cid:73)(cid:77)(cid:66)(cid:85)(cid:82)(cid:83)(cid:69)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:73)(cid:84)(cid:83)(cid:0)(cid:65)(cid:70)(cid:70)(cid:73)(cid:76)(cid:73)(cid:65)(cid:84)(cid:69)(cid:83)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:69)(cid:88)(cid:80)(cid:69)(cid:78)(cid:83)(cid:69)(cid:83)(cid:14)

We reimburse our general partner and its affiliates for costs incurred in managing and operating us, including costs incurred 
in rendering corporate staff and support services to us. The partnership agreement provides that our general partner determines 
the expenses that are allocable to us in any reasonable manner determined by our general partner in its sole discretion.

(cid:47)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:73)(cid:78)(cid:84)(cid:69)(cid:78)(cid:68)(cid:83)(cid:0)(cid:84)(cid:79)(cid:0)(cid:76)(cid:73)(cid:77)(cid:73)(cid:84)(cid:0)(cid:73)(cid:84)(cid:83)(cid:0)(cid:76)(cid:73)(cid:65)(cid:66)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)(cid:0)(cid:82)(cid:69)(cid:71)(cid:65)(cid:82)(cid:68)(cid:73)(cid:78)(cid:71)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:79)(cid:66)(cid:76)(cid:73)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:14)

Our general partner intends to limit its liability under contractual arrangements so that the other party has recourse only to 
our assets, and not against our general partner or its assets. The partnership agreement provides that any action taken by our general 
partner to limit its liability or our liability is not a breach of our general partner’s fiduciary duties, even if we could have obtained 
more favorable terms without the limitation on liability.

(cid:35)(cid:79)(cid:77)(cid:77)(cid:79)(cid:78)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:72)(cid:65)(cid:86)(cid:69)(cid:0)(cid:78)(cid:79)(cid:0)(cid:82)(cid:73)(cid:71)(cid:72)(cid:84)(cid:0)(cid:84)(cid:79)(cid:0)(cid:69)(cid:78)(cid:70)(cid:79)(cid:82)(cid:67)(cid:69)(cid:0)(cid:79)(cid:66)(cid:76)(cid:73)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:73)(cid:84)(cid:83)(cid:0)(cid:65)(cid:70)(cid:70)(cid:73)(cid:76)(cid:73)(cid:65)(cid:84)(cid:69)(cid:83)(cid:0)(cid:85)(cid:78)(cid:68)(cid:69)(cid:82)(cid:0)(cid:65)(cid:71)(cid:82)(cid:69)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)(cid:0)(cid:87)(cid:73)(cid:84)(cid:72)(cid:0)(cid:85)(cid:83)(cid:14)

Any agreements between us on the one hand, and our general partner and its affiliates, on the other, do not grant to the 

unitholders, separate and apart from us, the right to enforce the obligations of our general partner and its affiliates in our favor.

(cid:35)(cid:79)(cid:78)(cid:84)(cid:82)(cid:65)(cid:67)(cid:84)(cid:83)(cid:0)(cid:66)(cid:69)(cid:84)(cid:87)(cid:69)(cid:69)(cid:78)(cid:0)(cid:85)(cid:83)(cid:12)(cid:0)(cid:79)(cid:78)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:79)(cid:78)(cid:69)(cid:0)(cid:72)(cid:65)(cid:78)(cid:68)(cid:12)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:79)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:73)(cid:84)(cid:83)(cid:0)(cid:65)(cid:70)(cid:70)(cid:73)(cid:76)(cid:73)(cid:65)(cid:84)(cid:69)(cid:83)(cid:12)(cid:0)(cid:79)(cid:78)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:79)(cid:84)(cid:72)(cid:69)(cid:82)(cid:12)(cid:0)(cid:65)(cid:82)(cid:69)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:82)(cid:69)(cid:83)(cid:85)(cid:76)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:65)(cid:82)(cid:77)(cid:7)(cid:83)(cid:13)
(cid:76)(cid:69)(cid:78)(cid:71)(cid:84)(cid:72)(cid:0)(cid:78)(cid:69)(cid:71)(cid:79)(cid:84)(cid:73)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:14)

The partnership agreement allows our general partner to pay itself or its affiliates for any services rendered to us, provided 
these services are rendered on terms that are fair and reasonable. Our general partner may also enter into additional contractual 
arrangements with any of its affiliates on our behalf. Neither the partnership agreement nor any of the other agreements, contracts 
and arrangements between us, on the one hand, and our general partner and its affiliates, on the other, are the result of arm’s-length 
negotiations.

All of these transactions entered into after our initial public offerings are on terms that are fair and reasonable to us.

139

Our general partner and its affiliates have no obligation to permit us to use any facilities or assets of our general partner and 
its affiliates, except as may be provided in contracts entered into specifically dealing with that use. There is no obligation of our 
general partner or its affiliates to enter into any contracts of this kind.

(cid:55)(cid:69)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:78)(cid:79)(cid:84)(cid:0)(cid:67)(cid:72)(cid:79)(cid:79)(cid:83)(cid:69)(cid:0)(cid:84)(cid:79)(cid:0)(cid:82)(cid:69)(cid:84)(cid:65)(cid:73)(cid:78)(cid:0)(cid:83)(cid:69)(cid:80)(cid:65)(cid:82)(cid:65)(cid:84)(cid:69)(cid:0)(cid:67)(cid:79)(cid:85)(cid:78)(cid:83)(cid:69)(cid:76)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:79)(cid:85)(cid:82)(cid:83)(cid:69)(cid:76)(cid:86)(cid:69)(cid:83)(cid:0)(cid:79)(cid:82)(cid:0)(cid:70)(cid:79)(cid:82)(cid:0)(cid:84)(cid:72)(cid:69)(cid:0)(cid:72)(cid:79)(cid:76)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:67)(cid:79)(cid:77)(cid:77)(cid:79)(cid:78)(cid:0)(cid:85)(cid:78)(cid:73)(cid:84)(cid:83)(cid:14)

The attorneys, independent auditors and others who have performed services for us in the past were retained by our general 
partner, its affiliates and us and have continued to be retained by our general partner, its affiliates and us. Attorneys, independent 
auditors and others who perform services for us are selected by our general partner or the conflicts committee and may also perform 
services for our general partner and its affiliates. We may retain separate counsel for ourselves or the holders of common units in 
the event of a conflict of interest arising between our general partner and its affiliates, on the one hand, and us or the holders of 
common units, on the other, depending on the nature of the conflict. We do not intend to do so in most cases. Delaware case law 
has not definitively established the limits on the ability of a partnership agreement to restrict such fiduciary duties.

(cid:47)(cid:85)(cid:82)(cid:0)(cid:71)(cid:69)(cid:78)(cid:69)(cid:82)(cid:65)(cid:76)(cid:0)(cid:80)(cid:65)(cid:82)(cid:84)(cid:78)(cid:69)(cid:82)(cid:7)(cid:83)(cid:0)(cid:65)(cid:70)(cid:70)(cid:73)(cid:76)(cid:73)(cid:65)(cid:84)(cid:69)(cid:83)(cid:0)(cid:77)(cid:65)(cid:89)(cid:0)(cid:67)(cid:79)(cid:77)(cid:80)(cid:69)(cid:84)(cid:69)(cid:0)(cid:87)(cid:73)(cid:84)(cid:72)(cid:0)(cid:85)(cid:83)(cid:14)

The partnership agreement provides that our general partner is restricted from engaging in any business activities other than 
those incidental to its ownership of interests in us. Except as provided in our partnership agreement, the Omnibus Agreement and 
the Restricted Business Contribution Agreement, affiliates of our general partner will not be prohibited from engaging in activities 
in which they compete directly with us.

The Conflicts Committee Charter is is available upon request.

Director Independence

For a discussion of the independence of the members of the Board of Directors of our managing general partner under 
applicable standards, see "Item 10. Directors and Executive Officers of the Managing General Partner and Corporate Governance
—Corporate Governance—Independence of Directors," which is incorporated by reference into this Item 13.

Review, Approval or Ratification of Transactions with Related Persons

If a conflict or potential conflict of interest arises between our general partner and its affiliates (including the WPP Group, 
the Cline entities, and their affiliates) on the one hand, and our partnership and our limited partners, on the other hand, the resolution 
of any such conflict or potential conflict is addressed as described under "—Conflicts of Interest."

Pursuant to our Code of Business Conduct and Ethics, conflicts of interest are prohibited as a matter of policy, except under 
guidelines approved by the Board and as provided in the Omnibus Agreement, the Restricted Business Contribution Agreement, 
and our partnership agreement. For the year ended December 31, 2015, there were no transactions where such guidelines were 
not followed.

ITEM 14.  PRINCIPAL ACCOUNTANT FEES AND SERVICES

The Audit Committee of the Board of Directors of GP Natural Resource Partners LLC recommended and we engaged Ernst & 
Young LLP to audit our accounts and assist with tax work for fiscal 2015 and 2014. All of our audit, audit-related fees and tax 
services have been approved by the Audit Committee of our Board of Directors. The following table presents fees for professional 
services rendered by Ernst &Young LLP:

Audit Fees(1)
Tax Fees(2)
All Other Fees(3)

2015

2014

$

$

1,192,306
773,005
2,400

1,056,542
738,626

1,910  

(1)  Audit fees include fees associated with the annual integrated audit of our consolidated financial statements and internal 
controls over financial reporting, separate audits of subsidiaries and reviews of our quarterly financial statement for inclusion 
in our Form 10-Q and comfort letters; consents; work related to acquisitions; assistance with and review of documents 
filed with the SEC.

140

 
(2)  Tax fees include fees principally incurred for assistance with tax planning, compliance, tax return preparation and filing 

of Schedules K-1.

(3)  All other fees include the subscription to EY Online research tool.

Audit and Non-Audit Services Pre-Approval Policy

(cid:41)(cid:14)(cid:0)(cid:51)(cid:84)(cid:65)(cid:84)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:0)(cid:79)(cid:70)(cid:0)(cid:48)(cid:82)(cid:73)(cid:78)(cid:67)(cid:73)(cid:80)(cid:76)(cid:69)(cid:83)

Under the Sarbanes-Oxley Act of 2002 (the "Act"), the Audit Committee of the Board of Directors is responsible for the 
appointment, compensation and oversight of the work of the independent auditor. As part of this responsibility, the Audit Committee 
is required to pre-approve the audit and non-audit services performed by the independent auditor in order to assure that they do 
not impair the auditor’s independence from the Partnership. To implement these provisions of the Act, the SEC has issued rules 
specifying the types of services that an independent auditor may not provide to its audit client, as well as the audit committee’s 
administration of the engagement of the independent auditor. Accordingly, the Audit Committee has adopted, and the Board of 
Directors has ratified, this Audit and Non-Audit Services Pre-Approval Policy (the "Policy"), which sets forth the procedures and 
the conditions pursuant to which services proposed to be performed by the independent auditor may be pre-approved.

The SEC’s rules establish two different approaches to pre-approving services, which the SEC considers to be equally valid. 
Proposed services may either be pre-approved without consideration of specific case-by-case services by the Audit Committee 
("general  pre-approval")  or  require  the  specific  pre-approval  of  the  Audit  Committee  ("specific  pre-approval").  The  Audit 
Committee believes that the combination of these two approaches in this Policy will result in an effective and efficient procedure 
to pre-approve services performed by the independent auditor. As set forth in this Policy, unless a type of service has received 
general pre-approval, it will require specific pre-approval by the Audit Committee if it is to be provided by the independent auditor. 
Any proposed services exceeding pre-approved cost levels or budgeted amounts will also require specific pre-approval by the 
Audit Committee.

For both types of pre-approval, the Audit Committee will consider whether such services are consistent with the SEC’s rules 
on auditor independence. The Audit Committee will also consider whether the independent auditor is best positioned to provide 
the most effective and efficient service for reasons such as its familiarity with our business, employees, culture, accounting systems, 
risk profile and other factors, and whether the service might enhance the Partnership’s ability to manage or control risk or improve 
audit quality. All such factors will be considered as a whole, and no one factor will necessarily be determinative.

The Audit Committee is also mindful of the relationship between fees for audit and non-audit services in deciding whether 
to pre-approve any such services and may determine, for each fiscal year, the appropriate ratio between the total amount of fees 
for audit, audit-related and tax services.

The appendices to this Policy describe the audit, audit-related and tax services that have the general pre-approval of the 
Audit Committee. The term of any general pre-approval is 12 months from the date of pre-approval, unless the Audit Committee 
considers a different period and states otherwise. The Audit Committee will annually review and pre-approve the services that 
may  be  provided  by  the  independent  auditor  without  obtaining  specific  pre-approval  from  the Audit  Committee.  The Audit 
Committee will add or subtract to the list of general pre-approved services from time to time, based on subsequent determinations.

The purpose of this Policy is to set forth the procedures by which the Audit Committee intends to fulfill its responsibilities. 
It  does  not  delegate  the Audit  Committee’s  responsibilities  to  pre-approve  services  performed  by  the  independent  auditor  to 
management.

Ernst & Young LLP, our independent auditor has reviewed this Policy and believes that implementation of the policy will 

not adversely affect its independence.

(cid:41)(cid:41)(cid:14)(cid:0)(cid:36)(cid:69)(cid:76)(cid:69)(cid:71)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

As provided in the Act and the SEC’s rules, the Audit Committee has delegated either type of pre-approval authority to 
Robert B. Karn III, the Chairman of the Audit Committee. Mr. Karn must report, for informational purposes only, any pre-approval 
decisions to the Audit Committee at its next scheduled meeting.

141

(cid:41)(cid:41)(cid:41)(cid:14)(cid:0)(cid:33)(cid:85)(cid:68)(cid:73)(cid:84)(cid:0)(cid:51)(cid:69)(cid:82)(cid:86)(cid:73)(cid:67)(cid:69)(cid:83)

The annual Audit services engagement terms and fees will be subject to the specific pre-approval of the Audit Committee. 
Audit services include the annual financial statement audit (including required quarterly reviews), subsidiary audits and other 
procedures required to be performed by the independent auditor to be able to form an opinion on the Partnership’s consolidated 
financial statements. These other procedures include information systems and procedural reviews and testing performed in order 
to understand and place reliance on the systems of internal control, and consultations relating to the audit or quarterly review. 
Audit services also include the attestation engagement for the independent auditor’s report on management’s report on internal 
controls for financial reporting. The Audit Committee monitors the audit services engagement as necessary, but not less than on 
a quarterly basis, and approves, if necessary, any changes in terms, conditions and fees resulting from changes in audit scope, 
partnership structure or other items.

In addition to the annual audit services engagement approved by the Audit Committee, the Audit Committee may grant 
general pre-approval to other audit services, which are those services that only the independent auditor reasonably can provide. 
Other audit services may include statutory audits or financial audits for our subsidiaries or our affiliates and services associated 
with SEC registration statements, periodic reports and other documents filed with the SEC or other documents issued in connection 
with securities offerings.

(cid:41)(cid:54)(cid:14)(cid:0)(cid:33)(cid:85)(cid:68)(cid:73)(cid:84)(cid:13)(cid:82)(cid:69)(cid:76)(cid:65)(cid:84)(cid:69)(cid:68)(cid:0)(cid:51)(cid:69)(cid:82)(cid:86)(cid:73)(cid:67)(cid:69)(cid:83)

Audit-related services are assurance and related services that are reasonably related to the performance of the audit or review 
of the Partnership’s financial statements or that are traditionally performed by the independent auditor. Because the Audit Committee 
believes that the provision of audit-related services does not impair the independence of the auditor and is consistent with the 
SEC’s rules on auditor independence, the Audit Committee may grant general pre-approval to audit-related services. Audit-related 
services  include,  among  others,  due  diligence  services  pertaining  to  potential  business  acquisitions/dispositions;  accounting 
consultations related to accounting, financial reporting or disclosure matters not classified as "Audit Services"; assistance with 
understanding and implementing new accounting and financial reporting guidance from rulemaking authorities; financial audits 
of employee benefit plans; agreed-upon or expanded audit procedures related to accounting and/or billing records required to 
respond to or comply with financial, accounting or regulatory reporting matters; and assistance with internal control reporting 
requirements.

(cid:54)(cid:14)(cid:0)(cid:52)(cid:65)(cid:88)(cid:0)(cid:51)(cid:69)(cid:82)(cid:86)(cid:73)(cid:67)(cid:69)(cid:83)

The Audit Committee believes that the independent auditor can provide tax services to the Partnership such as tax compliance, 
tax planning and tax advice without impairing the auditor’s independence, and the SEC has stated that the independent auditor 
may provide such services. Hence, the Audit Committee believes it may grant general pre-approval to those tax services that have 
historically been provided by the auditor, that the Audit Committee has reviewed and believes would not impair the independence 
of the auditor and that are consistent with the SEC’s rules on auditor independence. The Audit Committee will not permit the 
retention of the independent auditor in connection with a transaction initially recommended by the independent auditor, the sole 
business purpose of which may be tax avoidance and the tax treatment of which may not be supported in the Internal Revenue 
Code and related regulations. The Audit Committee will consult with the Chief Financial Officer or outside counsel to determine 
that the tax planning and reporting positions are consistent with this Policy.

(cid:54)(cid:41)(cid:14)(cid:0)(cid:48)(cid:82)(cid:69)(cid:13)(cid:33)(cid:80)(cid:80)(cid:82)(cid:79)(cid:86)(cid:65)(cid:76)(cid:0)(cid:38)(cid:69)(cid:69)(cid:0)(cid:44)(cid:69)(cid:86)(cid:69)(cid:76)(cid:83)(cid:0)(cid:79)(cid:82)(cid:0)(cid:34)(cid:85)(cid:68)(cid:71)(cid:69)(cid:84)(cid:69)(cid:68)(cid:0)(cid:33)(cid:77)(cid:79)(cid:85)(cid:78)(cid:84)(cid:83)

Pre-approval fee levels or budgeted amounts for all services to be provided by the independent auditor will be established 
annually by the Audit Committee. Any proposed services exceeding these levels or amounts will require specific pre-approval by 
the Audit  Committee. The Audit  Committee  is  mindful  of  the  overall  relationship  of  fees  for  audit  and  non-audit  services  in 
determining whether to pre-approve any such services. For each fiscal year, the Audit Committee may determine the appropriate 
ratio between the total amount of fees for audit, audit-related and tax services.

(cid:54)(cid:41)(cid:41)(cid:14)(cid:0)(cid:48)(cid:82)(cid:79)(cid:67)(cid:69)(cid:68)(cid:85)(cid:82)(cid:69)(cid:83)

All requests or applications for services to be provided by the independent auditor that do not require specific approval by 
the Audit Committee will be submitted to the Chief Financial Officer and must include a detailed description of the services to be 
rendered. The Chief Financial Officer will determine whether such services are included within the list of services that have received 

142

the general pre-approval of the Audit Committee. The Audit Committee will be informed on a timely basis of any such services 
rendered by the independent auditor.

Requests or applications to provide services that require specific approval by the Audit Committee will be submitted to the 
Audit Committee by both the independent auditor and the Chief Financial Officer, and must include a joint statement as to whether, 
in their view, the request or application is consistent with the SEC’s rules on auditor independence.

143

PART IV

ITEM 15.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)(1) and (2) Financial Statements and Schedules
See "Item 8. Financial Statements and Supplementary Data."

(a)(3) Ciner Wyoming LLC Financial Statements. The financial statements of Ciner Wyoming LLC required pursuant to 
Rule 3-09 of Regulation S-X are included in this filing as Exhibit 99.3.

(a)(4) Exhibits 

Exhibit
Number
2.1

2.2

2.3

3.1

3.2

3.3

3.4

3.5

4.1

4.2

4.3

—

—

—

—

—

—

—

—

—

—

—

Description

Purchase Agreement, dated as of January 23, 2013, by and among Anadarko Holding Company, Big
Island Trona Company, NRP Trona LLC and NRP (Operating) LLC (incorporated by reference to Exhibit
2.1 to Current Report on Form 8-K filed on January 25, 2013).

Agreement and Plan of Merger, dated as of August 18, 2014, by and among VantaCore Partners LP,
VantaCore LLC, the Holders named therein, Natural Resource Partners L.P., NRP (Operating) LLC and
Rubble Merger Sub, LLC (incorporated by reference to Exhibit 2.1 to Current Report on Form 8-K filed
on August 20, 2014).

Interest Purchase Agreement, by and among NRP Oil and Gas LLC, Kaiser-Whiting, LLC and the
Owners of Kaiser-Whiting, LLC dated as of October 5, 2014 (incorporated by reference to Current
Report on Form 8-K filed on October 6, 2014).

Fourth Amended and Restated Agreement of Limited Partnership of Natural Resource Partners L.P., dated
as of September 20, 2010 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed
on September 21, 2010).

Fifth Amended and Restated Agreement of Limited Partnership of NRP (GP) LP, dated as of December
16, 2011 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on December 16,
2011).

Fifth Amended and Restated Limited Liability Company Agreement of GP Natural Resource Partners
LLC, dated as of October 31, 2013 (incorporated by reference to Exhibit 3.1 to Current Report on Form
8-K filed on October 31, 2013).

Amended and Restated Limited Liability Company Agreement of NRP (Operating) LLC, dated as of
October 17, 2002 (incorporated by reference to Exhibit 3.4 of Annual Report on Form 10-K for the year
ended December 31, 2002).

Certificate of Limited Partnership of Natural Resource Partners L.P.(incorporated by reference to Exhibit
3.1 to the Registration Statement on Form S-1 filed April 19, 2002, File No. 333-86582).

Note Purchase Agreement dated as of June 19, 2003 among NRP (Operating) LLC and the Purchasers
signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K filed June 23,
2003).

First Amendment, dated as of July 19, 2005, to Note Purchase Agreement dated as of June 19, 2003
among NRP (Operating) LLC and the purchasers signatory thereto (incorporated by reference to Exhibit
4.2 to Current Report on Form 8-K filed on July 20, 2005).

Second Amendment, dated as of March 28, 2007, to Note Purchase Agreement dated as of June 19, 2003
among NRP (Operating) LLC and the purchasers signatory thereto (incorporated by reference to Exhibit
4.2 to Current Report on Form 8-K filed on March 29, 2007).

144

 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number
4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

4.12

4.13

4.14

4.15

4.16

4.17

4.18

4.19

4.20

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Description

First Supplement to Note Purchase Agreement, dated as of July 19, 2005 among NRP (Operating) LLC
and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on Form
8-K filed on July 20, 2005).

Second Supplement to Note Purchase Agreement, dated as of March 28, 2007 among NRP (Operating)
LLC and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on
Form 8-K filed on March 29, 2007).

Third Supplement to Note Purchase Agreement, dated as of March 25, 2009 among NRP (Operating)
LLC and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on
Form 8-K filed on March 26, 2009).

Fourth Supplement to Note Purchase Agreement, dated as of April 20, 2011 among NRP (Operating)
LLC and the purchasers signatory thereto (incorporated by reference to Exhibit 4.1 to Current Report on
Form 8-K filed on April 21, 2011).

Subsidiary Guarantee of Senior Notes of NRP (Operating) LLC, dated June 19, 2003 (incorporated by
reference to Exhibit 4.5 to Current Report on Form 8-K filed June 23, 2003).

Form of Series A Note (incorporated by reference to Exhibit 4.2 to Current Report on Form 8-K filed
June 23, 2003).

Form of Series B Note (incorporated by reference to Exhibit 4.3 to Current Report on Form 8-K filed
June 23, 2003).

Form of Series D Note (incorporated by reference to Exhibit 4.12 to Annual Report on Form 10-K filed
February 28, 2007).

Form of Series E Note (incorporated by reference to Exhibit 4.3 to Current Report on Form 8-K filed
March 29, 2007).

Form of Series F Note (incorporated by reference to Exhibit 4.2 to Quarterly Report on Form 10-Q filed
May 7, 2009).

Form of Series G Note (incorporated by reference to Exhibit 4.3 to Quarterly Report on Form 10-Q filed
May 7, 2009).

Form of Series H Note (incorporated by reference to Exhibit 4.2 to Quarterly Report on Form 10-Q filed
May 5, 2011).

Form of Series I Note (incorporated by reference to Exhibit 4.3 to Quarterly Report on Form 10-Q filed
May 5, 2011).

Form of Series J Note (incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K filed on
June 15, 2011).

Form of Series K Note (incorporated by reference to Exhibit 4.1 to Current Report on Form 8-K filed on
October 3, 2011).

Registration Rights Agreement, dated as of January 23, 2013, by and among Natural Resource Partners
L.P. and the Investors named therein (incorporated by reference to Exhibit 4.1 to Current Report on Form
8-K filed on January 25, 2013).

Amendment No. 1 to Fourth Amended and Restated Agreement of Limited Partnership of Natural
Resource Partners L.P., dated March 6, 2012 (incorporated by reference to Exhibit 4.1 to Quarterly
Report on Form 10-Q filed on August 7, 2012).

145

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.21

4.22

4.23

4.24

10.1

—

—

10.2

—

10.3

—

10.4*** —

10.5*** —

10.6

—

Description

—

Indenture, dated September 18, 2013, by and among Natural Resource Partners L.P. and NRP Finance
Corporation, as issuers, and Wells Fargo Bank, National Association, as trustee (incorporated by reference to
Exhibit 4.1 to Current Report on Form 8-K filed on September 19, 2013).
—   Form of 9.125% Senior Notes due 2018 (contained in Exhibit 1 to Exhibit 4.22).
—

9.125% Senior Note due 2018 in $20,000,000 aggregate principal amount issued by Natural Resource
Partners L.P. and NRP Finance Corporation to Cline Trust Company, LLC, dated October 17, 2014
(incorporated by reference to Exhibit 4.3 to Current Report on Form 8-K filed on October 20, 2014).

Third Amendment, dated as of June 16, 2015, to Note Purchase Agreements, dated as of June 19, 2003,
among NRP (Operating) LLC and the holders named therein (incorporated by reference to Exhibit 4.1 to
Current Report on Form 8-K filed on June 18, 2015).

Third Amended and Restated Credit Agreement, dated as of June 16, 2015, by and among NRP (Operating)
LLC, the lenders party thereto, Citibank, N.A. as Administrative Agent and Collateral Agent, Citigroup
Global Markets Inc. and Wells Fargo Securities LLC as Joint Lead Arrangers and Joint Bookrunners, and
Citibank, N.A., as Syndication Agent (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-
K filed on June 18, 2015).

Contribution Agreement, dated as of September 20, 2010, by and among Natural Resource Partners L.P., NRP
(GP) LP, Western Pocahontas Properties Limited Partnership, Great Northern Properties Limited Partnership,
New Gauley Coal Corporation and NRP Investment L.P. (incorporated by reference to Exhibit 10.1 to Current
Report on Form 8-K filed on September 21, 2010).

Natural Resource Partners Second Amended and Restated Long-Term Incentive Plan (incorporated by
reference to Exhibit 10.1 to Current Report on Form 8-K filed on January 17, 2008).

Form of Phantom Unit Agreement (incorporated by reference to Exhibit 10.4 to Annual Report on Form 10-K
for the year ended December 31, 2007).

Natural Resource Partners Annual Incentive Plan (incorporated by reference to Exhibit 10.4 to Annual Report
on Form 10-K for the year ended December 31, 2002).

First Amended and Restated Omnibus Agreement, dated as of April 22, 2009, by and among Western
Pocahontas Properties Limited Partnership, Great Northern Properties Limited Partnership, New Gauley Coal
Corporation, Robertson Coal Management LLC, GP Natural Resource Partners LLC, NRP (GP) LP, Natural
Resource Partners L.P. and NRP (Operating) LLC (incorporated by reference to Exhibit 10.1 to Quarterly
Report on Form 10-Q filed May 7, 2009).

10.7

—

Restricted Business Contribution Agreement, dated January 4, 2007, by and among Christopher Cline,
Foresight Reserves LP, Adena Minerals, LLC, GP Natural Resource Partners LLC, NRP (GP) LP, Natural
Resource Partners L.P. and NRP (Operating) LLC (incorporated by reference to Exhibit 10.1 to Current
Report on Form 8-K filed on January 4, 2007).

10.8

—

Investor Rights Agreement, dated January 4, 2007, by and among NRP (GP) LP, GP Natural Resource
Partners LLC, Robertson Coal Management and Adena Minerals, LLC (incorporated by reference to Exhibit
10.2 to Current Report on Form 8-K filed on January 4, 2007).

146

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

10.9

—

10.10

10.11

10.12

10.13

10.14

10.15

10.16***

10.17***

10.18***

21.1*

23.1*

—

—

—

—

Description
Waiver Agreement, dated November 12, 2009, by and among Natural Resource Partners L.P., Great Northern
Properties Limited Partnership, Western Pocahontas Properties Limited Partnership, New Gauley Coal
Corporation, Robertson Coal Management LLC, GP Natural Resource Partners LLC, NRP (GP) LP, and
NRP (Operating) LLC (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on
November 13, 2009).

Common Unit Purchase Agreement, dated January 23, 2013, by and among Natural Resource Partners, L.P.
and the purchasers named therein (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K
filed on January 25, 2013).

Limited Liability Company Agreement of Ciner Wyoming LLC (formerly OCI Wyoming LLC), dated
June 30, 2014 (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed by Ciner
Resources LP (formerly OCI Resources LP) on July 2, 2014).

Amendment No. 1 to the Amended and Restated Limited Liability Company Agreement of Ciner Resource
Partners LLC (formerly known as OCI Resource Partners LLC), dated November 5, 2015 (incorporated by
reference to Exhibit 3.4 to Current Report on Form 8-K filed by Ciner Resources LP (formerly OCI
Resources LP) on November 5, 2015).

Credit Agreement, dated as of August 12, 2013, among NRP Oil and Gas LLC, Wells Fargo Bank, N.A., as
Administrative Agent, and Wells Fargo Securities, LLC as Sole Bookrunner and Sole Lead Arranger
(incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on August 13, 2013).

First Amendment to Credit Agreement, dated effective as of December 19, 2013, among NRP Oil and Gas
LLC, Wells Fargo Bank, N.A., as Administrative Agent, and Wells Fargo Securities, LLC as Sole
Bookrunner and Sole Lead Arranger (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-
K filed on December 20, 2013).

Second Amendment to Credit Agreement entered into effective as of November 12, 2014 among NRP Oil
and Gas LLC, each of the Lenders that is a signatory thereto, and Wells Fargo Bank, N.A., as administrative
agent for the Lenders (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on
November 14, 2014).

Natural Resource Partners L.P. 2016 Cash Long-Term Incentive Plan (incorporated by reference to Exhibit
10.1 to Current Report on Form 8-K filed on February 26, 2016).

Form of Long-Term Incentive Award Agreement (incorporated by reference to Exhibit 10.2 to Current
Report on Form 8-K filed on February 26, 2016).

Form of Long-Term Performance Award Agreement (incorporated by reference to Exhibit 10.3 to Current
Report on Form 8-K filed on February 26, 2016).
—   List of subsidiaries of Natural Resource Partners L.P.
—   Consent of Ernst & Young LLP.

147

 
 
 
 
 
 
 
Exhibit
Number

23.2*

23.3*

31.1*

31.2*

32.1**

32.2**

95.1*

99.1

99.2*

99.3*

Description

—   Consent of Deloitte & Touche LLP.
—   Consent of Netherland, Sewell & Associates, Inc.
—   Certification of Chief Executive Officer pursuant to Section 302 of Sarbanes-Oxley.
—   Certification of Chief Financial Officer pursuant to Section 302 of Sarbanes-Oxley.
—   Certification of Chief Executive Officer pursuant to 18 U.S.C. § 1350.
—   Certification of Chief Financial Officer pursuant to 18 U.S.C. § 1350.
—   Mine Safety Disclosure.
—

Description of certain provisions of the Fourth Amended and Restated Agreement of Limited Partnership of
Natural Resource Partners L.P. (incorporated by reference to Exhibit 99.1 to Current Report on Form 8-K
filed on September 21, 2010).

—   Report of Netherland, Sewell & Associates, Inc.
—

Financial Statements of Ciner Wyoming LLC as of and for the years ended December 31, 2015, 2014 and
2013.

101.INS* —   XBRL Instance Document
101.SCH* —   XBRL Taxonomy Extension Schema Document
101.CAL* —   XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF* —   XBRL Taxonomy Extension Definition Linkbase Document
101.LAB* — XBRL Taxonomy Extension Labels Linkbase Document
101.PRE* — XBRL Taxonomy Extension Presentation Linkbase Document

*

**

***

Filed herewith

Furnished herewith

Management compensatory plan or arrangement

148

 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused 

this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

NATURAL RESOURCE PARTNERS L.P.
By: NRP (GP) LP, its general partner
By: GP NATURAL RESOURCE

PARTNERS LLC, its general partner

By:

/(cid:86)/     CORBIN J. ROBERTSON, JR.      

Corbin J. Robertson, Jr.
Chairman of the Board and
Chief Executive Officer
(Principal Executive Officer)

By:

/(cid:86)/     CRAIG W. NUNEZ      

Craig W. Nunez
Chief Financial Officer and
Treasurer
(Principal Financial Officer)

By:

/(cid:86)/     CHRISTOPHER J. ZOLAS
Christopher J. Zolas

Chief Accounting Officer

(Principal Accounting Officer)

149

 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following 

persons on behalf of the registrant and in the capacities and on the dates indicated.

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

Date: March 11, 2016

/(cid:86)/     ROBERT T. BLAKELY      

Robert T. Blakely
Director

/(cid:86)/     RUSSELL D. GORDY      

Russell D. Gordy
Director

/(cid:86)/     DONALD R. HOLCOMB      

Donald R. Holcomb
Director

/(cid:86)/     ROBERT B. KARN III      

Robert B. Karn III
Director

/(cid:86)/     S. REED MORIAN      

S. Reed Morian
Director

/(cid:86)/     RICHARD A. NAVARRE      

Richard A. Navarre
Director

/(cid:86)/     CORBIN J. ROBERTSON III      

Corbin J. Robertson III
Director

/(cid:86)/     STEPHEN P. SMITH      

Stephen P. Smith
Director

/(cid:86)/     LEO A. VECELLIO, JR.      

Leo A. Vecellio, Jr.
Director

150

Exhibit 21.1

List of Subsidiaries of Natural Resource Partners L.P.

NRP (Operating) LLC
NRP Oil and Gas LLC
NRP Finance Corporation
WPP LLC
ACIN LLC
WBRD LLC
Hod LLC
Shepard Boone Coal Company LLC
Gatling Mineral, LLC
Independence Land Company, LLC
Williamson Transport, LLC
Little River Transport, LLC
Rivervista Mining, LLC
Deepwater Transportation, LLC
NRP Trona LLC
VantaCore Partners LLC
Laurel Aggregates Terminal Services of Delaware, LLC
Laurel Aggregates of Delaware, LLC
Laurel Aggregates of PA, LLC
Utica Resources LLC
Winn Materials, LLC
Winn Materials of Kentucky, LLC
Winn Marine, LLC
McIntosh Construction Company, LLC
McAsphalt. LLC
Southern Aggregates, LLC
Lake Lynn Transportation LLC
BRP LLC (51% interest)
CoVal Leasing Company, LLC (51% interest)

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statements (Form S-3 No. 333-207034, 
Form S-3 No. 333-183314, and Form S-3 No. 333-187883) of Natural Resource Partners L.P., and the related 
prospectus of our reports dated March 11, 2016, with respect to the consolidated financial statements of 
Natural Resource Partners L.P., and the effectiveness of internal control over financial reporting of Natural 
Resource Partners L.P., included in this Annual Report (Form 10-K) for the year ended December 31, 2015.

/s/    Ernst & Young LLP

Houston, Texas
March 11, 2016

 
Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statements on Form S-3 (Nos. 333-207034, 333-183314, 
and  333-187883)  of  Natural  Resource  Partners  L.P.,  of  our  report  dated  March  11,  2016,  relating  to  the  financial 
statements of Ciner Wyoming LLC as of December 31, 2015 and 2014, and for the three years in the period ended 
December 31, 2015, appearing in the Annual Report on Form 10-K of Natural Resource Partners L.P. for the year 
ended December 31, 2015.

/s/  Deloitte & Touche LLP

Atlanta, Georgia
March 11, 2016

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS

We hereby consent to the use by Natural Resource Partners L.P. (the “Company”) of our name and to the inclusion of information 
taken  from  our  report  dated  February  5,  2016  included  in  the  Company’s Annual  Report  on  Form  10-K  for  the  year  ended 
December 31, 2015, filed with the U.S. Securities and Exchange Commission on March 11, 2016, as well as to the incorporation 
by reference thereof into the Company's Registration Statements on Forms S-3 (Nos. 333-207034, 333-183314 and 333-187883).

Exhibit 23.3

NETHERLAND, SEWELL & ASSOCIATES, INC.

By:

/s/ Danny D. Simmons
Danny D. Simmons, P.E.
President and Chief Operating Officer

Houston, Texas
March 11, 2016

 
Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Corbin J. Robertson, Jr., certify that: 

1

2

3

4

I have reviewed this report on Form 10-K of Natural Resource Partners L.P.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.

b.

c.

d.

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures 
to be designed under our supervision, to ensure that material information relating to the registrant, 
including its consolidated subsidiaries, is made known to us by others within those entities, particularly 
during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability 
of financial reporting and the preparation of financial statements for external purposes in accordance 
with generally accepted accounting principles;

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end 
of the period covered by this report based on such evaluation; and

Disclosed in this report any change in the registrant’s internal control over financial reporting that 
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the 
case of an annual report) that has materially affected, or is reasonably likely to materially affect, the 
registrant’s internal control over financial reporting; and

5

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons 
performing the equivalent functions);

a.

b.

All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, 
process, summarize and report financial information; and

Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a 
significant role in the registrant’s internal control over financial reporting.

By:

  /s/ Corbin J. Robertson, Jr.
  Corbin J. Robertson, Jr.
  Chief Executive Officer

Date: March 11, 2016

 
 
 
 
 
 
Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Craig W. Nunez, certify that:

1.

2.

3.

4.

I have reviewed this report on Form 10-K of Natural Resource Partners L.P.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.

b.

c.

d.

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures 
to be designed under our supervision, to ensure that material information relating to the registrant, 
including its consolidated subsidiaries, is made known to us by others within those entities, particularly 
during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability 
of financial reporting and the preparation of financial statements for external purposes in accordance 
with generally accepted accounting principles;

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end 
of the period covered by this report based on such evaluation; and

Disclosed in this report any change in the registrant’s internal control over financial reporting that 
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the 
case of an annual report) that has materially affected, or is reasonably likely to materially affect, the 
registrant’s internal control over financial reporting; and

5.

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons 
performing the equivalent functions);

a.

b.

All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, 
process, summarize and report financial information; and

Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a 
significant role in the registrant’s internal control over financial reporting.

By:

  /s/ Craig W. Nunez
  Craig W. Nunez
  Chief Financial Officer

Date: March 11, 2016

 
 
 
 
 
 
 
CERTIFICATION OF
CHIEF EXECUTIVE OFFICER
OF GP NATURAL RESOURCE PARTNERS LLC
PURSUANT TO 18 U.S.C. § 1350

Exhibit 32.1

In connection with the accompanying report on Form 10-K for the year ended December 31, 2015 filed with the Securities 
and Exchange Commission on the date hereof (the “Report”), I, Corbin J. Robertson, Jr., Chief Executive Officer of GP Natural 
Resource Partners LLC, the general partner of the general partner of Natural Resource Partners L.P. (the “Company”), hereby 
certify, to my knowledge, that:

1.

2.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

By:

  /s/ Corbin J. Robertson, Jr.
  Corbin J. Robertson, Jr.
  Chief Executive Officer

Date: March 11, 2016

CERTIFICATION OF
CHIEF FINANCIAL OFFICER
OF GP NATURAL RESOURCE PARTNERS LLC
PURSUANT TO 18 U.S.C. § 1350

Exhibit 32.2

In connection with the accompanying report on Form 10-K for the year ended December 31, 2015 filed with the Securities 
and Exchange Commission on the date hereof (the “Report”), I, Craig W. Nunez, Chief Financial Officer of GP Natural Resource 
Partners LLC, the general partner of the general partner of Natural Resource Partners L.P. (the “Company”), hereby certify, to my 
knowledge, that:

1.

2.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

By:

  /s/ Craig W. Nunez
  Craig W. Nunez
  Chief Financial Officer

Date: March 11, 2016

 
Exhibit 95.1

MINE SAFETY DISCLOSURE

Our mining operations are subject to regulation by the Federal Mine Safety and Health Administration (“MSHA”) under 
the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). We have disclosed below information regarding certain citations 
and orders issued by MSHA and related assessments and legal actions with respect to these mining operations.  In evaluating the 
below information regarding mine safety and health, investors should take into account factors such as: (i) the number of citations 
and orders will vary depending on the size of a mine; (ii) the number of citations issued will vary from inspector to inspector and 
mine to mine; and (iii) citations and orders can be contested and appealed, and in that process are often reduced in severity and 
amount, and are sometimes dismissed or vacated.  The tables below do not include any orders or citations issued to independent 
contractors at our mines.

Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) requires issuers 
to include in periodic reports filed with the Securities and Exchange Commission (“SEC”) certain information relating to citations 
and orders for violations of standards under the Mine Act.  The following tables disclose information required under the Dodd-
Frank Act for the 12 month period ending December 31, 2015.

(cid:45)(cid:73)(cid:78)(cid:69)(cid:0)(cid:46)(cid:65)(cid:77)(cid:69)(cid:0)(cid:15)(cid:0)(cid:45)(cid:51)(cid:40)(cid:33)(cid:0)(cid:41)(cid:68)(cid:69)(cid:78)(cid:84)(cid:73)(cid:70)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:46)(cid:85)(cid:77)(cid:66)(cid:69)(cid:82)

(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:16)(cid:20)(cid:0)
(cid:51)(cid:6)(cid:51)
(cid:35)(cid:73)(cid:84)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:8)(cid:17)(cid:9)

(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:16)(cid:20)(cid:8)(cid:66)(cid:9)
(cid:47)(cid:82)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:8)(cid:18)(cid:9)

(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:16)(cid:20)(cid:8)(cid:68)(cid:9)(cid:0)
(cid:35)(cid:73)(cid:84)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)
(cid:47)(cid:82)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:8)(cid:19)(cid:9)

(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:17)(cid:16)(cid:8)(cid:66)(cid:9)
(cid:8)(cid:18)(cid:9)
(cid:54)(cid:73)(cid:79)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:8)(cid:20)(cid:9)

(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:16)(cid:23)(cid:8)(cid:65)(cid:9)
(cid:47)(cid:82)(cid:68)(cid:69)(cid:82)(cid:83)(cid:0)(cid:8)(cid:21)(cid:9)

Winn Materials/40-03094

Grand Rivers/Winn Materials of
Kentucky/15-19561

Laurel Aggregates/36-08891

Southern Aggregates/Plant 11/16-01537

Southern Aggregates/Plant 1/16-01388

Southern Aggregates/Plant 7/16-01519

Southern Aggregates/Plant 6/16-00336

Southern Aggregates/Plant 9/16-01536

Southern Aggregates/Plant 12/16-01546

Southern Aggregates/Plant 7.2/16-01551

Southern Aggregates/Plant 15/16-01550

10

0

2

2

0

0

3

2

2

2

0

0

0

0

0

0

0

0

0

0

0

0

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

0

0

0

0

(cid:52)(cid:79)(cid:84)(cid:65)(cid:76)(cid:0)(cid:36)(cid:79)(cid:76)(cid:76)(cid:65)(cid:82)(cid:0)
(cid:54)(cid:65)(cid:76)(cid:85)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)(cid:45)(cid:51)(cid:40)(cid:33)(cid:0)
(cid:33)(cid:83)(cid:83)(cid:69)(cid:83)(cid:83)(cid:77)(cid:69)(cid:78)(cid:84)(cid:83)(cid:0)
(cid:48)(cid:82)(cid:79)(cid:80)(cid:79)(cid:83)(cid:69)(cid:68)(cid:0)(cid:8)(cid:22)(cid:9)

$56,338 (7)

$0

$5,262

$524

$300

$100

$936

$1,384

$1,068

$634

$200

(1) Mine Act  section  104  S&S  citations  shown  above  are  for  alleged  violations  of  mandatory  health  or  safety  standards  that  could  significantly  and 
substantially contribute to a mine health and safety hazard.  It should be noted that, for purposes of this table, S&S citations that are included in another 
column, such as Section 104(d) citations, are not also included as Section 104 S&S citations in this column.  

(2) Mine Act section 104(b) orders are for alleged failures to totally abate a citation within the time period specified in the citation.

(3) Mine Act section 104(d) citations and orders are for an alleged unwarrantable failure ((cid:76)(cid:17)(cid:72)(cid:17), aggravated conduct constituting more than ordinary negligence) 

to comply with mandatory health or safety standards.

(4) Mine Act section 110(b)(2) violations are for an alleged “flagrant” failure ((cid:76)(cid:17)(cid:72)(cid:17), reckless or repeated) to make reasonable efforts to eliminate a known 
violation of a mandatory safety or health standard that substantially and proximately caused, or reasonably could have been expected to cause, death 
or serious bodily injury.

(5) Mine Act section 107(a) orders are for alleged conditions or practices which could reasonably be expected to cause death or serious physical harm 
before such condition or practice can be abated and result in orders of immediate withdrawal from the area of the mine affected by the condition. 

(6) Amounts shown include assessments proposed by MSHA during the twelve-month period ending December 31, 2015 on all citations and orders, 

including those citations and orders that are not required to be included within the above chart.  

(7) The two 104(d) citations and orders issued to Winn Materials-Clarksville represents $48,263 of the $56,338 total proposed assessment.

(cid:45)(cid:73)(cid:78)(cid:69)(cid:0)(cid:46)(cid:65)(cid:77)(cid:69)(cid:0)(cid:15)(cid:0)(cid:45)(cid:51)(cid:40)(cid:33)(cid:0)(cid:41)(cid:68)(cid:69)(cid:78)(cid:84)(cid:73)(cid:70)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:46)(cid:85)(cid:77)(cid:66)(cid:69)(cid:82)

(cid:52)(cid:79)(cid:84)(cid:65)(cid:76)(cid:0)(cid:46)(cid:85)(cid:77)(cid:66)(cid:69)(cid:82)(cid:0)(cid:79)(cid:70)
(cid:45)(cid:73)(cid:78)(cid:73)(cid:78)(cid:71)(cid:0)(cid:50)(cid:69)(cid:76)(cid:65)(cid:84)(cid:69)(cid:68)
(cid:38)(cid:65)(cid:84)(cid:65)(cid:76)(cid:73)(cid:84)(cid:73)(cid:69)(cid:83)

(cid:50)(cid:69)(cid:67)(cid:69)(cid:73)(cid:86)(cid:69)(cid:68)(cid:0)(cid:46)(cid:79)(cid:84)(cid:73)(cid:67)(cid:69)(cid:0)(cid:79)(cid:70)(cid:0)
(cid:48)(cid:65)(cid:84)(cid:84)(cid:69)(cid:82)(cid:78)(cid:0)(cid:79)(cid:70)(cid:0)
(cid:54)(cid:73)(cid:79)(cid:76)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:53)(cid:78)(cid:68)(cid:69)(cid:82)(cid:0)
(cid:51)(cid:69)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:17)(cid:16)(cid:20)(cid:8)(cid:69)(cid:9)(cid:0)
(cid:8)(cid:89)(cid:69)(cid:83)(cid:15)(cid:78)(cid:79)(cid:9)(cid:0)(cid:8)(cid:24)(cid:9)

(cid:44)(cid:69)(cid:71)(cid:65)(cid:76)(cid:0)(cid:33)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)
(cid:48)(cid:69)(cid:78)(cid:68)(cid:73)(cid:78)(cid:71)(cid:0)(cid:65)(cid:83)(cid:0)(cid:79)(cid:70)(cid:0)(cid:44)(cid:65)(cid:83)(cid:84)
(cid:36)(cid:65)(cid:89)(cid:0)(cid:79)(cid:70)(cid:0)(cid:48)(cid:69)(cid:82)(cid:73)(cid:79)(cid:68)

(cid:44)(cid:69)(cid:71)(cid:65)(cid:76)(cid:0)(cid:33)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)
(cid:41)(cid:78)(cid:73)(cid:84)(cid:73)(cid:65)(cid:84)(cid:69)(cid:68)(cid:0)(cid:36)(cid:85)(cid:82)(cid:73)(cid:78)(cid:71)
(cid:48)(cid:69)(cid:82)(cid:73)(cid:79)(cid:68)

(cid:44)(cid:69)(cid:71)(cid:65)(cid:76)(cid:0)(cid:33)(cid:67)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)
(cid:50)(cid:69)(cid:83)(cid:79)(cid:76)(cid:86)(cid:69)(cid:68)(cid:0)(cid:36)(cid:85)(cid:82)(cid:73)(cid:78)(cid:71)
(cid:48)(cid:69)(cid:82)(cid:73)(cid:79)(cid:68)

Winn Materials/40-03094

Grand Rivers/Winn Materials of
Kentucky/15-19561

Laurel Aggregates/36-08891

Southern Aggregates/Plant 11/16-01537

Southern Aggregates/Plant 1/16-01388

Southern Aggregates/Plant 7/16-01519

Southern Aggregates/Plant 6/16-00336

Southern Aggregates/Plant 9/16-01536

Southern Aggregates/Plant 12/16-01546

Southern Aggregates/Plant 7.2/16-01551

Southern Aggregates/Plant 15/16-01550

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

23

23

0

3

5

0

0

4

3

0

1

1

0

5

3

0

0

4

3

1

1

1

2

0

3

0

2

2

0

0

1

0

0

(8)    Mine Act section 104(e) written notices are for an alleged pattern of violations of mandatory health or safety standards that could significantly and 

substantially contribute to a mine safety or health hazard.

The number of legal actions pending before the Federal Mine Safety and Health Review Commission as of December 31, 

2015 that fall into each of the following categories is as follows:

(cid:45)(cid:73)(cid:78)(cid:69)(cid:0)(cid:46)(cid:65)(cid:77)(cid:69)(cid:0)(cid:15)(cid:0)(cid:45)(cid:51)(cid:40)(cid:33)(cid:0)(cid:41)(cid:68)(cid:69)(cid:78)(cid:84)(cid:73)(cid:70)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:0)(cid:46)(cid:85)(cid:77)(cid:66)(cid:69)(cid:82)

(cid:35)(cid:79)(cid:78)(cid:84)(cid:69)(cid:83)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)
(cid:35)(cid:73)(cid:84)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:65)(cid:78)(cid:68)
(cid:47)(cid:82)(cid:68)(cid:69)(cid:82)(cid:83)

(cid:35)(cid:79)(cid:78)(cid:84)(cid:69)(cid:83)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)
(cid:48)(cid:82)(cid:79)(cid:80)(cid:79)(cid:83)(cid:69)(cid:68)
(cid:48)(cid:69)(cid:78)(cid:65)(cid:76)(cid:84)(cid:73)(cid:69)(cid:83)

(cid:35)(cid:79)(cid:77)(cid:80)(cid:76)(cid:65)(cid:73)(cid:78)(cid:84)(cid:83)(cid:0)(cid:70)(cid:79)(cid:82)
(cid:35)(cid:79)(cid:77)(cid:80)(cid:69)(cid:78)(cid:83)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)

(cid:35)(cid:79)(cid:77)(cid:80)(cid:76)(cid:65)(cid:73)(cid:78)(cid:84)(cid:83)(cid:0)(cid:79)(cid:70)
(cid:36)(cid:73)(cid:83)(cid:67)(cid:72)(cid:65)(cid:82)(cid:71)(cid:69)(cid:15)
(cid:36)(cid:73)(cid:83)(cid:67)(cid:82)(cid:73)(cid:77)(cid:73)(cid:78)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:15)
(cid:41)(cid:78)(cid:84)(cid:69)(cid:82)(cid:70)(cid:69)(cid:82)(cid:69)(cid:78)(cid:67)(cid:69)

(cid:33)(cid:80)(cid:80)(cid:76)(cid:73)(cid:67)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:83)(cid:0)(cid:70)(cid:79)(cid:82)
(cid:52)(cid:69)(cid:77)(cid:80)(cid:79)(cid:82)(cid:65)(cid:82)(cid:89)
(cid:50)(cid:69)(cid:76)(cid:73)(cid:69)(cid:70)

(cid:33)(cid:80)(cid:80)(cid:69)(cid:65)(cid:76)(cid:83)(cid:0)(cid:79)(cid:70)
(cid:42)(cid:85)(cid:68)(cid:71)(cid:69)(cid:83)(cid:0)(cid:50)(cid:85)(cid:76)(cid:73)(cid:78)(cid:71)(cid:83)

Winn Materials/40-03094

Grand Rivers/Winn Materials of
Kentucky/15-19561

Laurel Aggregates/36-08891

Southern Aggregates/Plant 11/16-01537

Southern Aggregates/Plant 1/16-01388

Southern Aggregates/Plant 7/16-01519

Southern Aggregates/Plant 6/16-00336

Southern Aggregates/Plant 9/16-01536

Southern Aggregates/Plant 12/16-01546

Southern Aggregates/Plant 7.2/16-01551

Southern Aggregates/Plant 15/16-01550

17

0

0

2

0

0

2

1

0

0

0

6

0

3

3

0

0

2

2

1

1

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Exhibit 99.2

February 5, 2016

Mr. Tim Chung
Natural Resource Partners L.P.
1201 Louisiana Street, Suite 3400
Houston, Texas 77002

Dear Mr. Chung:

In accordance with your request, we have estimated the proved reserves and future revenue, as of December 31, 
2015, to the Natural Resource Partners L.P. (NRP LP) interest in certain oil and gas properties located in the United 
States.  We completed our evaluation on January 21, 2016.  It is our understanding that the proved reserves estimated 
in this report constitute all of the proved reserves owned by NRP LP.  The estimates in this report have been prepared 
in accordance with the definitions and regulations of the U.S. Securities and Exchange Commission (SEC) and, with 
the exception of the exclusion of future income taxes, conform to the FASB Accounting Standards Codification Topic 
932, Extractive Activities-Oil and Gas.  Definitions are presented immediately following this letter.  This report has been 
prepared for NRP LP's use in filing with the SEC; in our opinion the assumptions, data, methods, and procedures used 
in the preparation of this report are appropriate for such purpose.

We estimate the net reserves and future net revenue to the NRP LP interest in these properties, as of December 31, 
2015, to be:

Category

Proved Developed Producing
Proved Developed Non-Producing
Proved Undeveloped
Total Proved

Totals may not add because of rounding.

Oil
(MBBL)

7,636.6
226.5
212.3
8,075.4

Net Reserves
NGL
(MBBL)

1,176.8
18.7
27.4
1,223.0

Gas
(MMCF)

13,014.9
141.6
166.9
13,323.3

Future Net Revenue (M$)

Total

183,344.3
5,850.9
2,682.5
191,877.6

Present Worth
at 10%

111,783.1
3,869.3
700.9
116,353.4

The oil volumes shown include crude oil and condensate.  Oil and natural gas liquids (NGL) volumes are expressed 
in thousands of barrels (MBBL); a barrel is equivalent to 42 United States gallons.  Gas volumes are expressed in 
millions of cubic feet (MMCF) at standard temperature and pressure bases.

The estimates shown in this report are for proved reserves.  As requested, probable and possible reserves that exist 
for these properties have not been included.  This report does not include any value that could be attributed to interests 
in  undeveloped  acreage  beyond  those  tracts  for  which  undeveloped  reserves  have  been  estimated.    Reserves 
categorization  conveys  the  relative  degree  of  certainty;  reserves  subcategorization  is  based  on  development  and 
production status.  The estimates of reserves and future revenue included herein have not been adjusted for risk.

Gross revenue is NRP LP's share of the gross (100 percent) revenue from the properties prior to any deductions.  
Future  net  revenue  is  after  deductions  for  NRP  LP's  share  of  production  taxes,  ad  valorem  taxes,  capital  costs, 
abandonment costs, and operating expenses but before consideration of any income taxes.  The future net revenue 
has been discounted at an annual rate of 10 percent to determine its present worth, which is shown to indicate the 
effect of time on the value of money.  Future net revenue presented in this report, whether discounted or undiscounted, 
should not be construed as being the fair market value of the properties.

Prices used in this report are based on the 12-month unweighted arithmetic average of the first-day-of-the-month price 
for each month in the period January through December 2015.  For oil and NGL volumes, the average West Texas 
Intermediate  posted  price  of  $46.79  per  barrel  is  adjusted  by  region  for  quality,  transportation  fees,  and  market 
differentials.  For gas volumes, the average Henry Hub spot price of $2.587 per MMBTU is adjusted by region for 
energy content, transportation fees, and market differentials.  All prices are held constant throughout the lives of the 
properties.  The average adjusted product prices weighted by production over the remaining lives of the properties are 
$40.47 per barrel of oil, $8.38 per barrel of NGL, and $2.051 per MCF of gas.  

Operating costs used in this report are based on operating expense records of NRP LP, where available.  For other 
properties, we have estimated operating costs based on our knowledge of similar operations in the area.  Operating 
costs include the per-well overhead expenses allowed under joint operating agreements along with estimates of costs 
to be incurred at and below the district and field levels.  Operating costs have been divided into per-well costs and per-
unit-of-production costs.  Since all properties are nonoperated, headquarters general and administrative overhead 
expenses of NRP LP are not included.  Operating costs are not escalated for inflation.  

Capital costs used in this report were provided by NRP LP and are based on authorizations for expenditure and actual 
costs from recent activity.  Capital costs are included as required for workovers, new development wells, and production 
equipment.  Based on our understanding of future development plans, a review of the records provided to us, and our 
knowledge of similar properties, we regard these estimated capital costs to be reasonable.  Abandonment costs used 
in this report are NRP LP's estimates of the costs to abandon the wells and production facilities, net of any salvage 
value.  Capital costs and abandonment costs are not escalated for inflation.

For the purposes of this report, we did not perform any field inspection of the properties, nor did we examine the 
mechanical operation or condition of the wells and facilities.  We have not investigated possible environmental liability 
related to the properties; therefore, our estimates do not include any costs due to such possible liability.  

We have made no investigation of potential volume and value imbalances resulting from overdelivery or underdelivery 
to the NRP LP interest.  Therefore, our estimates of reserves and future revenue do not include adjustments for the 
settlement of any such imbalances; our projections are based on NRP LP receiving its net revenue interest share of 
estimated future gross production.

The reserves shown in this report are estimates only and should not be construed as exact quantities.  Proved reserves 
are those quantities of oil and gas which, by analysis of engineering and geoscience data, can be estimated with 
reasonable certainty to be economically producible; probable and possible reserves are those additional reserves 
which are sequentially less certain to be recovered than proved reserves.  Estimates of reserves may increase or 
decrease as a result of market conditions, future operations, changes in regulations, or actual reservoir performance.  
In addition to the primary economic assumptions discussed herein, our estimates are based on certain assumptions 
including, but not limited to, that the properties will be developed consistent with current development plans as provided 
to us by NRP LP, that the properties will be operated in a prudent manner, that no governmental regulations or controls 
will be put in place that would impact the ability of the interest owner to recover the reserves, and that our projections 
of future production will prove consistent with actual performance.  If the reserves are recovered, the revenues therefrom 
and the costs related thereto could be more or less than the estimated amounts.  Because of governmental policies 
and  uncertainties  of  supply  and  demand,  the  sales  rates,  prices  received  for  the  reserves,  and  costs  incurred  in 
recovering such reserves may vary from assumptions made while preparing this report.  

For  the  purposes  of  this  report,  we  used  technical  and  economic  data  including,  but  not  limited  to  well  test  data, 
production data, historical price and cost information, and property ownership interests.  The reserves in this report 

have  been  estimated  using  deterministic  methods;  these  estimates  have  been  prepared  in  accordance  with  the 
Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society 
of Petroleum Engineers (SPE Standards).  We used standard engineering and geoscience methods, or a combination 
of  methods,  including  performance  analysis  and  analogy,  that  we  considered  to  be  appropriate  and  necessary  to 
categorize and estimate reserves in accordance with SEC definitions and regulations.  As in all aspects of oil and gas 
evaluation, there are uncertainties inherent in the interpretation of engineering and geoscience data; therefore, our 
conclusions necessarily represent only informed professional judgment.  

The data used in our estimates were obtained from NRP LP, public data sources, and the nonconfidential files of 
Netherland, Sewell & Associates, Inc. (NSAI) and were accepted as accurate.  Supporting work data are on file in our 
office.  We have not examined the titles to the properties or independently confirmed the actual degree or type of 
interest owned.  The technical person primarily responsible for preparing the estimates presented herein meets the 
requirements regarding qualifications, independence, objectivity, and confidentiality set forth in the SPE Standards.  
Steven W. Jansen, a Licensed Professional Engineer in the State of Texas, has been practicing consulting petroleum 
engineering at NSAI since 2011 and has over 4 years of prior industry experience.  We are independent petroleum 
engineers, geologists, geophysicists, and petrophysicists; we do not own an interest in these properties nor are we 
employed on a contingent basis.

Sincerely,

NETHERLAND, SEWELL & ASSOCIATES, INC.

Texas Registered Engineering Firm F-2699

/s/ C.H. (Scott) Rees II

By: C.H. (Scott) Rees III, P.E.

Chairman and Chief Executive Officer

/s/ Steven W. Jansen

By: Steven W. Jansen, P.E. 112973

Vice President

Date Signed:  February 5, 2016

DEFINITIONS OF OIL AND GAS RESERVES
Adapted from U.S. Securities and Exchange Commission Regulation S-X Section 210.4-10(a)

The following definitions are set forth in U.S. Securities and Exchange Commission (SEC) Regulation S-X Section 
 Also included is supplemental information from (1) the 2007 Petroleum Resources Management System 
approved by the Society of Petroleum Engineers, (2) the FASB Accounting Standards Codification Topic 932, Extractive 
Activities-Oil and Gas, and (3) the SEC's Compliance and Disclosure Interpretations.

(1) Acquisition of properties.  Costs incurred to purchase, lease or otherwise acquire a property, including costs of 
lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land 
including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in 
acquiring properties.

(2) Analogous  reservoir.   Analogous  reservoirs,  as  used  in  resources  assessments,  have  similar  rock  and  fluid 
properties, reservoir conditions (depth, temperature, and pressure) and drive mechanisms, but are typically at a more 
advanced  stage  of  development  than  the  reservoir  of  interest  and  thus  may  provide  concepts  to  assist  in  the 
interpretation of more limited data and estimation of recovery.  When used to support proved reserves, an "analogous 
reservoir" refers to a reservoir that shares the following characteristics with the reservoir of interest:

(i) Same geological formation (but not necessarily in pressure communication with the reservoir of interest);
(ii) Same environment of deposition;
(iii) Similar geological structure; and
(iv) Same drive mechanism.

Instruction to paragraph (a)(2): Reservoir properties must, in the aggregate, be no more favorable in the analog than 
in the reservoir of interest.

(3) Bitumen.  Bitumen, sometimes referred to as natural bitumen, is petroleum in a solid or semi-solid state in natural 
deposits with a viscosity greater than 10,000 centipoise measured at original temperature in the deposit and atmospheric 
pressure, on a gas free basis.  In its natural state it usually contains sulfur, metals, and other non-hydrocarbons.

(4) Condensate.    Condensate  is  a  mixture  of  hydrocarbons  that  exists  in  the  gaseous  phase  at  original  reservoir 
temperature and pressure, but that, when produced, is in the liquid phase at surface pressure and temperature.

(5) Deterministic estimate.  The method of estimating reserves or resources is called deterministic when a single value 
for each parameter (from the geoscience, engineering, or economic data) in the reserves calculation is used in the 
reserves estimation procedure.

(6) Developed oil and gas reserves.  Developed oil and gas reserves are reserves of any category that can be expected 
to be recovered:

(i) Through existing wells with existing equipment and operating methods or in which the cost of the required 

equipment is relatively minor compared to the cost of a new well; and

(ii) Through installed extraction equipment and infrastructure operational at the time of the reserves estimate 

if the extraction is by means not involving a well.

Supplemental definitions from the 2007 Petroleum Resources Management System:

Developed Producing Reserves - Developed Producing Reserves are expected to be recovered from completion intervals that are open 
and producing at the time of the estimate.  Improved recovery reserves are considered producing only after the improved recovery project 
is in operation.

Developed Non-Producing Reserves - Developed Non-Producing Reserves include shut-in and behind-pipe Reserves.  Shut-in Reserves 
are expected to be recovered from (1) completion intervals which are open at the time of the estimate but which have not yet started 
producing, (2) wells which were shut-in for market conditions or pipeline connections, or (3) wells not capable of production for mechanical 
reasons.  Behind-pipe Reserves are expected to be recovered from zones in existing wells which will require additional completion work 
or future recompletion prior to start of production.  In all cases, production can be initiated or restored with relatively low expenditure 
compared to the cost of drilling a new well.  

Definitions - Page 1 of  7

(7) Development costs.  Costs incurred to obtain access to proved reserves and to provide facilities for extracting, 
treating,  gathering  and  storing  the  oil  and  gas.    More  specifically,  development  costs,  including  depreciation  and 
applicable operating costs of support equipment and facilities and other costs of development activities, are costs 
incurred to:

(i) Gain access to and prepare well locations for drilling, including surveying well locations for the purpose 
of determining specific development drilling sites, clearing ground, draining, road building, and relocating 
public roads, gas lines, and power lines, to the extent necessary in developing the proved reserves.
(ii) Drill and equip development wells, development-type stratigraphic test wells, and service wells, including 
the costs of platforms and of well equipment such as casing, tubing, pumping equipment, and the wellhead 
assembly.

(iii) Acquire, construct, and install production facilities such as lease flow lines, separators, treaters, heaters, 
manifolds, measuring devices, and production storage tanks, natural gas cycling and processing plants, 
and central utility and waste disposal systems.

(iv) Provide improved recovery systems.

(8) Development project.  A development project is the means by which petroleum resources are brought to the status 
of economically producible.  As examples, the development of a single reservoir or field, an incremental development 
in a producing field, or the integrated development of a group of several fields and associated facilities with a common 
ownership may constitute a development project.

(9) Development well.  A well drilled within the proved area of an oil or gas reservoir to the depth of a stratigraphic 
horizon known to be productive.

(10) Economically producible.  The term economically producible, as it relates to a resource, means a resource which 
generates revenue that exceeds, or is reasonably expected to exceed, the costs of the operation.  The value of the 
products that generate revenue shall be determined at the terminal point of oil and gas producing activities as defined 
in paragraph (a)(16) of this section.

(11) Estimated ultimate recovery (EUR).  Estimated ultimate recovery is the sum of reserves remaining as of a given 
date and cumulative production as of that date.

(12) Exploration costs.  Costs incurred in identifying areas that may warrant examination and in examining specific 
areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory 
wells and exploratory-type stratigraphic test wells.  Exploration costs may be incurred both before acquiring the related 
property  (sometimes  referred  to  in  part  as  prospecting  costs)  and  after  acquiring  the  property.    Principal  types  of 
exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and 
other costs of exploration activities, are:

(i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct 
those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting 
those studies.  Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs.
(ii) Costs  of  carrying  and  retaining  undeveloped  properties,  such  as  delay  rentals,  ad  valorem  taxes  on 

properties, legal costs for title defense, and the maintenance of land and lease records.

(iii) Dry hole contributions and bottom hole contributions.
(iv) Costs of drilling and equipping exploratory wells.
(v) Costs of drilling exploratory-type stratigraphic test wells.

(13) Exploratory well.  An exploratory well is a well drilled to find a new field or to find a new reservoir in a field previously 
found  to  be  productive  of  oil  or  gas  in  another  reservoir.    Generally,  an  exploratory  well  is  any  well  that  is  not  a 
development well, an extension well, a service well, or a stratigraphic test well as those items are defined in this section.

(14) Extension well.  An extension well is a well drilled to extend the limits of a known reservoir.

Definitions - Page 2 of  7

(15) Field.  An area consisting of a single reservoir or multiple reservoirs all grouped on or related to the same individual 
geological structural feature and/or stratigraphic condition.  There may be two or more reservoirs in a field which are 
separated vertically by intervening impervious strata, or laterally by local geologic barriers, or by both.  Reservoirs that 
are associated by being in overlapping or adjacent fields may be treated as a single or common operational field.  The 
geological terms "structural feature" and "stratigraphic condition" are intended to identify localized geological features 
as opposed to the broader terms of basins, trends, provinces, plays, areas-of-interest, etc.

(16) Oil and gas producing activities.

(i) Oil and gas producing activities include:

(A) The search for crude oil, including condensate and natural gas liquids, or natural gas ("oil and 

gas") in their natural states and original locations;

(B) The acquisition of property rights or properties for the purpose of further exploration or for the 

purpose of removing the oil or gas from such properties;

(C) The construction, drilling, and production activities necessary to retrieve oil and gas from their 
natural reservoirs, including the acquisition, construction, installation, and maintenance of field 
gathering and storage systems, such as:
(1) Lifting the oil and gas to the surface; and
(2) Gathering, treating, and field processing (as in the case of processing gas to extract liquid 

hydrocarbons); and

(D) Extraction of saleable hydrocarbons, in the solid, liquid, or gaseous state, from oil sands, shale, 
coalbeds,  or  other  nonrenewable  natural  resources  which  are  intended  to  be  upgraded  into 
synthetic oil or gas, and activities undertaken with a view to such extraction.

Instruction 1 to paragraph (a)(16)(i): The oil and gas production function shall be regarded as ending at a "terminal 
point", which is the outlet valve on the lease or field storage tank.  If unusual physical or operational circumstances 
exist, it may be appropriate to regard the terminal point for the production function as:

a. The first point at which oil, gas, or gas liquids, natural or synthetic, are delivered to a main pipeline, a 

b.

common carrier, a refinery, or a marine terminal; and
In the case of natural resources that are intended to be upgraded into synthetic oil or gas, if those natural 
resources are delivered to a purchaser prior to upgrading, the first point at which the natural resources 
are delivered to a main pipeline, a common carrier, a refinery, a marine terminal, or a facility which upgrades 
such natural resources into synthetic oil or gas.

Instruction 2 to paragraph (a)(16)(i): For purposes of this paragraph (a)(16), the term saleable hydrocarbons means 
hydrocarbons that are saleable in the state in which the hydrocarbons are delivered.

(ii) Oil and gas producing activities do not include:

(A) Transporting, refining, or marketing oil and gas;
(B) Processing of produced oil, gas, or natural resources that can be upgraded into synthetic oil or 
gas by a registrant that does not have the legal right to produce or a revenue interest in such 
production;

(C) Activities relating to the production of natural resources other than oil, gas, or natural resources 

from which synthetic oil and gas can be extracted; or

(D) Production of geothermal steam.

(17) Possible reserves.  Possible reserves are those additional reserves that are less certain to be recovered than 
probable reserves.

(i) When deterministic methods are used, the total quantities ultimately recovered from a project have a low 
probability of exceeding proved plus probable plus possible reserves.  When probabilistic methods are 

Definitions - Page 3 of  7

used, there should be at least a 10% probability that the total quantities ultimately recovered will equal or 
exceed the proved plus probable plus possible reserves estimates.

(ii) Possible reserves may be assigned to areas of a reservoir adjacent to probable reserves where data 
control and interpretations of available data are progressively less certain.  Frequently, this will be in areas 
where  geoscience  and  engineering  data  are  unable  to  define  clearly  the  area  and  vertical  limits  of 
commercial production from the reservoir by a defined project.

(iii) Possible reserves also include incremental quantities associated with a greater percentage recovery of 

the hydrocarbons in place than the recovery quantities assumed for probable reserves.

(iv) The proved plus probable and proved plus probable plus possible reserves estimates must be based on 
reasonable alternative technical and commercial interpretations within the reservoir or subject project that 
are clearly documented, including comparisons to results in successful similar projects.

(v) Possible  reserves  may  be  assigned  where  geoscience  and  engineering  data  identify  directly  adjacent 
portions of a reservoir within the same accumulation that may be separated from proved areas by faults 
with displacement less than formation thickness or other geological discontinuities and that have not been 
penetrated by a wellbore, and the registrant believes that such adjacent portions are in communication 
with the known (proved) reservoir.  Possible reserves may be assigned to areas that are structurally higher 
or lower than the proved area if these areas are in communication with the proved reservoir.

(vi) Pursuant to paragraph (a)(22)(iii) of this section, where direct observation has defined a highest known 
oil  (HKO)  elevation  and  the  potential  exists  for  an  associated  gas  cap,  proved  oil  reserves  should  be 
assigned in the structurally higher portions of the reservoir above the HKO only if the higher contact can 
be established with reasonable certainty through reliable technology.  Portions of the reservoir that do not 
meet this reasonable certainty criterion may be assigned as probable and possible oil or gas based on 
reservoir fluid properties and pressure gradient interpretations.

(18) Probable reserves.  Probable reserves are those additional reserves that are less certain to be recovered than 
proved reserves but which, together with proved reserves, are as likely as not to be recovered.

(i) When deterministic methods are used, it is as likely as not that actual remaining quantities recovered will 
exceed the sum of estimated proved plus probable reserves.  When probabilistic methods are used, there 
should be at least a 50% probability that the actual quantities recovered will equal or exceed the proved 
plus probable reserves estimates.

(ii) Probable reserves may be assigned to areas of a reservoir adjacent to proved reserves where data control 
or interpretations of available data are less certain, even if the interpreted reservoir continuity of structure 
or productivity does not meet the reasonable certainty criterion.  Probable reserves may be assigned to 
areas that are structurally higher than the proved area if these areas are in communication with the proved 
reservoir.

(iii) Probable  reserves  estimates  also  include  potential  incremental  quantities  associated  with  a  greater 

percentage recovery of the hydrocarbons in place than assumed for proved reserves.

(iv) See also guidelines in paragraphs (a)(17)(iv) and (a)(17)(vi) of this section.

(19) Probabilistic estimate.  The method of estimation of reserves or resources is called probabilistic when the full 
range of values that could reasonably occur for each unknown parameter (from the geoscience and engineering data) 
is used to generate a full range of possible outcomes and their associated probabilities of occurrence.

(20) Production costs.

(i) Costs incurred to operate and maintain wells and related equipment and facilities, including depreciation 
and  applicable  operating  costs  of  support  equipment  and  facilities  and  other  costs  of  operating  and 
maintaining those wells and related equipment and facilities.  They become part of the cost of oil and gas 
produced.  Examples of production costs (sometimes called lifting costs) are:

(A) Costs of labor to operate the wells and related equipment and facilities.
(B) Repairs and maintenance.

Definitions - Page 4 of  7

(C) Materials, supplies, and fuel consumed and supplies utilized in operating the wells and related 

equipment and facilities.

(D) Property taxes and insurance applicable to proved properties and wells and related equipment 

and facilities.
(E) Severance taxes.

(ii) Some support equipment or facilities may serve two or more oil and gas producing activities and may also 
serve  transportation,  refining,  and  marketing  activities.   To  the  extent  that  the  support  equipment  and 
facilities are used in oil and gas producing activities, their depreciation and applicable operating costs 
become  exploration,  development  or  production  costs,  as  appropriate.    Depreciation,  depletion,  and 
amortization of capitalized acquisition, exploration, and development costs are not production costs but 
also become part of the cost of oil and gas produced along with production (lifting) costs identified above.

(21) Proved area.  The part of a property to which proved reserves have been specifically attributed.

(22) Proved oil and gas reserves.  Proved oil and gas reserves are those quantities of oil and gas, which, by analysis 
of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible-from 
a  given  date  forward,  from  known  reservoirs,  and  under  existing  economic  conditions,  operating  methods,  and 
government  regulations-prior  to  the  time  at  which  contracts  providing  the  right  to  operate  expire,  unless  evidence 
indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for 
the estimation.  The project to extract the hydrocarbons must have commenced or the operator must be reasonably 
certain that it will commence the project within a reasonable time.

(i) The area of the reservoir considered as proved includes:   

(A) The area identified by drilling and limited by fluid contacts, if any, and 
(B) Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be 
continuous  with  it  and  to  contain  economically  producible  oil  or  gas  on  the  basis  of  available 
geoscience and engineering data. 

(ii)

In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known 
hydrocarbons (LKH) as seen in a well penetration unless geoscience, engineering, or performance data 
and reliable technology establishes a lower contact with reasonable certainty.

(iii) Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the 
potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher 
portions of the reservoir only if geoscience, engineering, or performance data and reliable technology 
establish the higher contact with reasonable certainty.

(iv) Reserves  which  can  be  produced  economically  through  application  of  improved  recovery  techniques 

(including, but not limited to, fluid injection) are included in the proved classification when:

(A) Successful testing by a pilot project in an area of the reservoir with properties no more favorable 
than  in  the  reservoir  as  a  whole,  the  operation  of  an  installed  program  in  the  reservoir  or  an 
analogous  reservoir,  or  other  evidence  using  reliable  technology  establishes  the  reasonable 
certainty of the engineering analysis on which the project or program was based; and

(B) The project has been approved for development by all necessary parties and entities, including 

governmental entities.

(v) Existing economic conditions include prices and costs at which economic producibility from a reservoir is 
to be determined.  The price shall be the average price during the 12-month period prior to the ending 
date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-
of-the-month  price  for  each  month  within  such  period,  unless  prices  are  defined  by  contractual 
arrangements, excluding escalations based upon future conditions.

(23) Proved properties.  Properties with proved reserves.

Definitions - Page 5 of  7

(24) Reasonable certainty.  If deterministic methods are used, reasonable certainty means a high degree of confidence 
that the quantities will be recovered.  If probabilistic methods are used, there should be at least a 90% probability that 
the quantities actually recovered will equal or exceed the estimate.  A high degree of confidence exists if the quantity 
is much more likely to be achieved than not, and, as changes due to increased availability of geoscience (geological, 
geophysical, and geochemical), engineering, and economic data are made to estimated ultimate recovery (EUR) with 
time, reasonably certain EUR is much more likely to increase or remain constant than to decrease.

(25) Reliable technology.  Reliable technology is a grouping of one or more technologies (including computational 
methods) that has been field tested and has been demonstrated to provide reasonably certain results with consistency 
and repeatability in the formation being evaluated or in an analogous formation.

(26) Reserves.  Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be 
economically producible, as of a given date, by application of development projects to known accumulations.  In addition, 
there must exist, or there must be a reasonable expectation that there will exist, the legal right to produce or a revenue 
interest in the production, installed means of delivering oil and gas or related substances to market, and all permits 
and financing required to implement the project.

Note to paragraph (a)(26): Reserves should not be assigned to adjacent reservoirs isolated by major, potentially sealing, 
faults until those reservoirs are penetrated and evaluated as economically producible.  Reserves should not be assigned 
to areas that are clearly separated from a known accumulation by a non-productive reservoir (i.e., absence of reservoir, 
structurally low reservoir, or negative test results). Such areas may contain prospective resources (i.e., potentially 
recoverable resources from undiscovered accumulations).

Excerpted from the FASB Accounting Standards Codification Topic 932, Extractive Activities-Oil and Gas:

932-235-50-30  A standardized measure of discounted future net cash flows relating to an entity's interests in both of the following shall 
be disclosed as of the end of the year:

a.

Proved oil and gas reserves (see paragraphs 932-235-50-3 through 50-11B)

b.
Oil and gas subject to purchase under long-term supply, purchase, or similar agreements and contracts in which the entity 
participates in the operation of the properties on which the oil or gas is located or otherwise serves as the producer of those reserves 
(see paragraph 932-235-50-7).

The standardized measure of discounted future net cash flows relating to those two types of interests in reserves may be combined for 
reporting purposes.  

932-235-50-31  All of the following information shall be disclosed in the aggregate and for each geographic area for which reserve quantities 
are disclosed in accordance with paragraphs 932-235-50-3 through 50-11B: 

a.
Future cash inflows.  These shall be computed by applying prices used in estimating the entity's proved oil and gas reserves 
to the year-end quantities of those reserves.  Future price changes shall be considered only to the extent provided by contractual 
arrangements in existence at year-end.

Future development and production costs.  These costs shall be computed by estimating the expenditures to be incurred 
b.
in  developing  and  producing  the  proved  oil  and  gas  reserves  at  the  end  of  the  year,  based  on  year-end  costs  and  assuming 
continuation  of  existing  economic  conditions.    If  estimated  development  expenditures  are  significant,  they  shall  be  presented 
separately from estimated production costs.

c.
Future income tax expenses.  These expenses shall be computed by applying the appropriate year-end statutory tax rates, 
with consideration of future tax rates already legislated, to the future pretax net cash flows relating to the entity's proved oil and gas 
reserves, less the tax basis of the properties involved.  The future income tax expenses shall give effect to tax deductions and tax 
credits and allowances relating to the entity's proved oil and gas reserves.

d.
income tax expenses from future cash inflows.

Future net cash flows.  These amounts are the result of subtracting future development and production costs and future 

e.
net cash flows relating to proved oil and gas reserves.

Discount.  This amount shall be derived from using a discount rate of 10 percent a year to reflect the timing of the future 

f.
discount.

Standardized measure of discounted future net cash flows.  This amount is the future net cash flows less the computed 

(27) Reservoir.  A porous and permeable underground formation containing a natural accumulation of producible oil 
and/or gas that is confined by impermeable rock or water barriers and is individual and separate from other reservoirs.
Definitions - Page 6 of  7

(28) Resources.  Resources are quantities of oil and gas estimated to exist in naturally occurring accumulations.  A 
portion  of  the  resources  may  be  estimated  to  be  recoverable,  and  another  portion  may  be  considered  to  be 
unrecoverable.  Resources include both discovered and undiscovered accumulations.

(29) Service well.  A well drilled or completed for the purpose of supporting production in an existing field.  Specific 
purposes of service wells include gas injection, water injection, steam injection, air injection, salt-water disposal, water 
supply for injection, observation, or injection for in-situ combustion.

(30) Stratigraphic  test  well.   A  stratigraphic  test  well  is  a  drilling  effort,  geologically  directed,  to  obtain  information 
pertaining to a specific geologic condition.  Such wells customarily are drilled without the intent of being completed for 
hydrocarbon production.  The classification also includes tests identified as core tests and all types of expendable 
holes related to hydrocarbon exploration.  Stratigraphic tests are classified as "exploratory type" if not drilled in a known 
area or "development type" if drilled in a known area.

(31) Undeveloped oil and gas reserves.  Undeveloped oil and gas reserves are reserves of any category that are 
expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure 
is required for recompletion.

(i) Reserves on undrilled acreage shall be limited to those directly offsetting development spacing areas that 
are reasonably certain of production when drilled, unless evidence using reliable technology exists that 
establishes reasonable certainty of economic producibility at greater distances.

(ii) Undrilled locations can be classified as having undeveloped reserves only if a development plan has been 
adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances, 
justify a longer time.

From the SEC's Compliance and Disclosure Interpretations (October 26, 2009):

Although  several  types  of  projects  -  such  as  constructing  offshore  platforms  and  development  in  urban  areas,  remote  locations  or 
environmentally sensitive locations - by their nature customarily take a longer time to develop and therefore often do justify longer time 
periods, this determination must always take into consideration all of the facts and circumstances. No particular type of project per se 
justifies a longer time period, and any extension beyond five years should be the exception, and not the rule.

Factors that a company should consider in determining whether or not circumstances justify recognizing reserves even though development 
may extend past five years include, but are not limited to, the following:

The company's level of ongoing significant development activities in the area to be developed (for example, drilling only 

the minimum number of wells necessary to maintain the lease generally would not constitute significant development activities);

The company's historical record at completing development of comparable long-term projects; 

The  amount  of  time  in  which  the  company  has  maintained  the  leases,  or  booked  the  reserves,  without  significant 

development activities;

The extent to which the company has followed a previously adopted development plan (for example, if a company has 
changed its development plan several times without taking significant steps to implement any of those plans, recognizing proved 
undeveloped reserves typically would not be appropriate); and

The extent to which delays in development are caused by external factors related to the physical operating environment 
(for example, restrictions on development on Federal lands, but not obtaining government permits), rather than by internal factors 
(for example, shifting resources to develop properties with higher priority).

(iii) Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which 
an  application  of  fluid  injection  or  other  improved  recovery  technique  is  contemplated,  unless  such 
techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir, 
as defined in paragraph (a)(2) of this section, or by other evidence using reliable technology establishing 
reasonable certainty.

(32) Unproved properties.  Properties with no proved reserves.

Definitions - Page 7 of  7

 
 
 
 
 
 
 
 
 
 
           Exhibit 99.3

Ciner Wyoming LLC

(A Majority-Owned Subsidiary of Ciner Resources LP)

Financial Statements as of December 31, 2015 and 2014 and for the Years 
Ended December 31, 2015, 2014, and 2013, and Report of Independent 
Registered Public Accounting Firm

1

CINER WYOMING LLC 

(A Majority Owned Subsidiary of Ciner Resources LP)

TABLE OF CONTENTS

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

BALANCE SHEETS AS OF DECEMBER 31, 2015 AND 2014

STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME FOR THE YEARS ENDED
DECEMBER 31, 2015, 2014 AND 2013

STATEMENTS OF MEMBERS' EQUITY FOR THE YEARS ENDED DECEMBER 31, 2015, 2014 AND 2013

STATEMENTS OF CASH FLOWS FOR THE YEARS ENDED DECEMBER 31, 2015, 2014 AND 2013

NOTES TO THE FINANCIAL STATEMENTS

Page
Number

3

4

5

6

7

8

2

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Managers and Members of

Ciner Wyoming LLC

Atlanta, Georgia

We have audited the accompanying balance sheets of Ciner Wyoming LLC (the “Company”) as of December 31, 2015 
and 2014, and the related statements of operations and comprehensive income, members’ equity, and cash flows for 
each of the three years in the period ended December 31, 2015, and the related notes to the financial statements. These 
financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion 
on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the 
financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to 
perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control 
over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for 
the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. 
Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the 
amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates 
made by management, as well as evaluating the overall financial statement presentation. We believe that our audits 
provide a reasonable basis for our opinion.

In our opinion, such financial statements referred to above present fairly, in all material respects, the financial position 
of the Company as of December 31, 2015 and 2014, and the results of its operations and its cash flows for each of the 
three years in the period ended December 31, 2015, in conformity with accounting principles generally accepted in 
the United States of America.

/s/ DELOITTE & TOUCHE LLP

Atlanta, Georgia
March 11, 2016

3

CINER WYOMING LLC
(A Majority Owned Subsidiary of Ciner Resources LP)

BALANCE SHEETS
AS OF DECEMBER 31, 2015 AND 2014
(In thousands of dollars)

ASSETS
CURRENT ASSETS:
Cash and cash equivalents
Accounts receivable, net
Accounts receivable - ANSAC
Due from affiliates, net
Inventory
Other current assets
           Total current assets
PROPERTY, PLANT, AND EQUIPMENT, NET
OTHER NON-CURRENT ASSETS
TOTAL ASSETS

LIABILITIES AND MEMBERS' EQUITY
CURRENT LIABILITIES:
  Accounts payable
  Due to affiliates
  Accrued expenses
           Total current liabilities
LONG-TERM DEBT
OTHER NON-CURRENT LIABILITIES
           Total liabilities
COMMITMENTS AND CONTINGENCIES

MEMBERS' EQUITY:
  Members’ equity - Ciner Resources LP
  Members’ equity - Natural Resource Partners LP
  Accumulated other comprehensive loss
           Total members' equity

$

$

$

2015

2014

$

$

$

18,158
33,788
52,211
12,325
26,376
1,837
144,695
212,819
21,026
378,540

13,351
4,634
25,033
43,018
110,000
6,808
159,826

113,681
109,224
(4,191)
218,714

30,520
35,457
70,410
19,489
22,466
1,509
179,851
201,402
21,651
402,904

13,069
5,347
29,288
47,704
145,000
4,192
196,896

105,445
101,311
(748)
206,008

TOTAL LIABILITIES AND MEMBERS' EQUITY

$

378,540

$

402,904

See notes to financial statements.

4

CINER WYOMING LLC
(A Majority Owned Subsidiary of Ciner Resources LP)

STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
FOR THE YEARS ENDED DECEMBER 31, 2015, 2014 AND 2013
(In thousands of dollars)

SALES - AFFILIATES
SALES - OTHERS
Total net sales
COST OF PRODUCTS SOLD
FREIGHT COSTS
           Total cost of products sold

GROSS PROFIT

SELLING, GENERAL AND ADMINISTRATIVE EXPENSES - AFFILIATES

SELLING, GENERAL AND ADMINISTRATIVE EXPENSES - OTHERS
LOSS ON DISPOSAL OF ASSETS, NET
OPERATING INCOME
OTHER INCOME (EXPENSE):
  Interest income
  Interest expense
  Other income (expense), net
           Total other income (expense)

NET INCOME
OTHER COMPREHENSIVE INCOME (LOSS)
  Income (loss) on derivative financial instruments
COMPREHENSIVE INCOME

See notes to financial statements.

$

2015

2014

2013

$

265,289
221,104
486,393
232,853
122,047
354,900

131,493

13,904

1,315
202
116,072

31
(3,975)
(478)
(4,422)

$

236,685
228,347
465,032
222,848
123,745
346,593

118,439

16,192

577
1,032
100,638

78
(5,140)
1,064
(3,998)

211,645
230,487
442,132
225,160
122,673
347,833

94,299

12,506

36
—
81,757

56
(2,838)
680
(2,102)

111,650

96,640

79,655

(3,443)
108,207

$

$

(198)
96,442

$

30
79,685

5

CINER WYOMING LLC
(A Majority Owned Subsidiary of Ciner Resources LP)

STATEMENTS OF MEMBERS' EQUITY
FOR THE YEARS ENDED DECEMBER 31, 2015, 2014 AND 2013
(In thousands of dollars)

Ciner
Resources
LP

Natural
Resource
Partners LP

OCI
Wyoming
Holding Co.

Big Island

OCI
Wyoming
Co.

Accumulated
Other
Comprehensive
Income ( Loss)

Total
Members'
Equity

Balance at January 1, 2013

$

— $

— $

138,369

$

132,941

$

9,837

$

(580)

280,567

Allocation of net income
through January 22, 2013

Transfer of interest

Allocation of net income from
January 23, 2013 through July
17, 2013

Restructuring on July 18, 2013

Capital distribution to members
through July 18, 2013

Allocation of net income from
July 18, 2013 through
September 17, 2013

Restructuring on September 18,
2013

Allocation of net income from
September 18, 2013 trhough
December 31, 2013

Other comprehensive income
(loss)

—

1,142

1,097

134,038

—

(134,038)

—

—

—

—

—

—

15,011

(908)

15,623

(945)

(70,060)

(72,920)

5,356

4,477

86,841

—

(85,746)

14,078

13,525

—

—

—

—

882

—

7,372

1,853

(19,941)

1,092

(1,095)

—

—

—

—

—

—

—

—

—

30

—

—

—

—

—

—

—

Balance at December 31, 2013

$

100,919

$

96,962

$

— $

— $

— $

(550)

Allocation of net income

Capital distribution to members

Other comprehensive income
(loss)

49,286

(44,760)

47,354

(43,005)

—

—

—

—

—

—

—

—

—

—

—

—

—

(198)

(198)

Balance at December 31, 2014

$

105,445

$

101,311

$

— $

— $

— $

(748) $

206,008

Allocation of net income

Capital distribution to members

Other comprehensive income
(loss)

56,941

(48,705)

54,709

(46,796)

—

—

—

—

—

—

—

—

—

—

—

—

—

111,650

(95,501)

(3,443)

(3,443)

Balance at December 31, 2015

$

113,681

$

109,224

$

— $

— $

— $

(4,191) $

218,714

See notes to financial statements.

6

3,121

—

38,006

—

(162,921)

10,925

—

27,603

30

197,331

96,640

(87,765)

CINER WYOMING LLC
(A Majority Owned Subsidiary of Ciner Resources LP)

STATEMENTS OF CASH FLOWS
FOR THE YEARS ENDED DECEMBER 31, 2015, 2014 AND 2013
(In thousands of dollars)

CASH FLOWS FROM OPERATING ACTIVITIES:
Net income
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization
Loss on disposal of assets, net
Other non-cash items
(Increase) decrease in:
Accounts receivable, net
Accounts receivable - ANSAC
Inventory
Other current and non-current assets
Due from affiliates, net
Increase (decrease) in:
Accounts payable
Accrued expenses and other liabilities
Due to affiliates
Net cash provided by operating activities
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures
Proceeds from sale of fixed assets
Net cash used in investing activities
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments on revolving credit facility
Borrowings on revolving credit facility
Cash distribution to members
Net cash used in financing activities
NET (DECREASE) INCREASE  IN CASH AND CASH EQUIVALENTS
CASH AND CASH EQUIVALENTS:
Beginning of year
End of year
SUPPLEMENTAL DISLCOSURE OF CASH FLOW INFORMATION:
Interest paid during the year
SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING ACTIVITIES :
Capital expenditures on account
See notes to financial statements

2015

2014

2013

$

111,650

$

96,640

$

79,655

22,870
202
755

1,668
18,199
(3,660)
(816)
7,163

1,792
(5,312)
(713)
153,798

(35,659)
—
(35,659)

(40,000)
5,000
(95,501)
(130,501)
(12,362)

21,587
1,032
(203)

(1,055)
(12,359)
(1,499)
(153)
905

(3,535)
3,230
4,971
109,561

(27,255)
10
(27,245)

(10,000)
—
(87,765)
(97,765)
(15,449)

30,520
18,158

4,059

3,033

$

$

$

45,969
30,520

4,274

4,579

$

$

$

$

$

$

22,723
—
—

809
(4,215)
(45)
(1,470)
5,557

66
(542)
(3,062)
99,476

(16,241)
—
(16,241)

(32,000)
135,000
(162,921)
(59,921)
23,314

22,655
45,969

2,285

745

7

CINER WYOMING LLC

(A Majority Owned Subsidiary of Ciner Resources LP)

NOTES TO FINANCIAL STATEMENTS
AS OF DECEMBER 31, 2015 AND 2014 AND FOR THE YEARS ENDED DECEMBER 31 2015, 2014, AND 2013
(Dollars in thousands)

1. Corporate Structure

A  51%  membership  interest  in  Ciner  Wyoming  LLC  (the  "Company,"  "we,"  "us,"  or  "our"),  formerly  OCI 
Wyoming LLC, is owned by Ciner Resources LP (CINR or the "Partnership"), formerly OCI Resources LP. NRP 
Trona LLC, a wholly owned subsidiary of Natural Resource Partners LP (NRP) owns a 49% membership interest 
in the Company.  CINR is a master limited partnership traded on the New York Stock exchange and is currently 
owned approximately 75% by Ciner Wyoming Holding Co. (CINWHCO), formerly OCI Wyoming Holding Co., 
and  approximately  25%  by  the  general  public.  CINWHCO  is  100%  owned  by  Ciner  Resources  Corporation 
(CRC), formerly OCI Chemical Corporation, which is ultimately 100% owned by Ciner Enterprises, Inc. (CINE). 
CINE is 100% owned by Akkan Enerji ve Madencilik Anonim Sirketi ("Akkan"), which is 100% owned by Turgay 
Ciner, the Chairman of the Ciner Group, a Turkish conglomerate of companies engaged in energy and mining 
(including soda ash mining), media and shipping markets.

Completed sale transaction - On October 23, 2015, CINE acquired 100% of OCI Chemical Corporation in a 
stock purchase transaction from OCI Enterprises Inc. ("OCIE") (the "Transaction"). OCI Chemical Corporation 
was  subsequently  renamed  Ciner  Resources  Corporation.  CRC  owns  indirectly  the  Partnership  through 
CINWHCOs approximately 75% ownership interest. As a result of the closing of the Transaction, OCIE no longer 
has any direct or indirect ownership interest in the Partnership.

In connection with the closing of the Transaction, CINE (as borrower), and CINWHCO and CRC (as guarantors), 
entered  into  a  credit  facility  (as  amended  and  restated  or  otherwise  modified,  the  “Ciner  Enterprises  Credit 
Facility”),  which  is  secured  by  certain  assets,  including  the  common  units  and  the  subordinated  units  of  the 
Partnership owned by CINWHCO.

2. Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations - The Company operations consist of the mining of trona ore, which, when processed, 
becomes  soda  ash.   All  our  soda  ash  processed  is  sold  to  various  domestic  and  European  customers,  and  to 
American Natural Soda Ash Corporation (ANSAC) which is an affiliate for export sales. All mining and processing 
activities take place in one facility located in Green River, Wyoming.

A summary of the significant accounting policies is as follows:

(cid:37)(cid:68)(cid:86)(cid:76)(cid:86)(cid:3)(cid:82)(cid:73)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:72)(cid:81)(cid:87)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81) - The accompanying financial statements have been prepared in accordance with accounting 
principles generally accepted in the United States of America.

(cid:56)(cid:86)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:40)(cid:86)(cid:87)(cid:76)(cid:80)(cid:68)(cid:87)(cid:72)(cid:86) - The preparation of financial statements, in accordance with accounting principles generally 
accepted in the United States of America, requires management to make estimates and assumptions that affect 
the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the dates of the 
financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual 
results could differ from those estimates.

(cid:53)(cid:72)(cid:89)(cid:72)(cid:81)(cid:88)(cid:72)(cid:3)(cid:53)(cid:72)(cid:70)(cid:82)(cid:74)(cid:81)(cid:76)(cid:87)(cid:76)(cid:82)(cid:81) - We recognize revenue when the earnings process is complete, which is generally upon 
transfer of title. This transfer typically occurs upon shipment to the customer, which is normally free on board 

8

("FOB") terms or upon receipt by the customer. In all cases, we apply the following criteria in recognizing revenue: 
(1)  persuasive  evidence  of  an  arrangement  exists;  (2)  delivery  has  occurred;  (3)  the  selling  price  is  fixed, 
determinable or reasonably estimated sales price has been agreed with the customer; and (4) collectability is 
reasonably assured.  Customer rebates are accounted for as sales deductions. We record amounts billed for shipping 
and handling fees as revenue. Costs incurred for shipping and handling are recorded as costs of products sold. 

(cid:41)(cid:85)(cid:72)(cid:76)(cid:74)(cid:75)(cid:87)(cid:3)(cid:38)(cid:82)(cid:86)(cid:87)(cid:86)  -  The  Company  includes  freight  costs  billed  to  customers  for  shipments  administered  by  the 
Company in gross sales. The related freight costs along with cost of products sold are deducted from gross sales 
to determine gross profit.

(cid:38)(cid:68)(cid:86)(cid:75)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:68)(cid:86)(cid:75)(cid:3)(cid:40)(cid:84)(cid:88)(cid:76)(cid:89)(cid:68)(cid:79)(cid:72)(cid:81)(cid:87)(cid:86) - The Company considers all highly liquid investments purchased with an original 
maturity of three months or less to be cash equivalents.  Cash equivalents consist primarily of money market 
deposit accounts.

(cid:36)(cid:70)(cid:70)(cid:82)(cid:88)(cid:81)(cid:87)(cid:86)(cid:3)(cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:89)(cid:68)(cid:69)(cid:79)(cid:72) - Accounts receivable are carried at the original invoice amount less an estimate for doubtful 
receivables. We generally do not require collateral against outstanding accounts receivable. The allowance for 
doubtful accounts is based on specifically identified amounts that the Company believes to be uncollectible. An 
additional allowance is recorded based on certain percentages of aged receivables, which are determined based 
on management’s assessment of the general financial conditions affecting the Company's customer base. If actual 
collection experience changes, revisions to the allowance may be required. Accounts receivable are written off 
when deemed uncollectible. Recoveries of accounts receivable previously written off are recorded when received. 
During the years ended 2015, 2014 and 2013 there were no significant accounts receivable bad debt expenses, 
write-offs or recoveries.

(cid:44)(cid:81)(cid:89)(cid:72)(cid:81)(cid:87)(cid:82)(cid:85)(cid:92) - Inventory is carried at the lower of cost or market. Cost is determined using the first-in, first-out 
method for raw material and finished goods inventory and the weighted average cost method for stores inventory. 
Costs include raw materials, direct labor and manufacturing overhead. Market is based on current replacement 
cost for raw materials and stores inventory, and finished goods is based on net realizable value.

• (cid:53)(cid:68)(cid:90)(cid:3)(cid:80)(cid:68)(cid:87)(cid:72)(cid:85)(cid:76)(cid:68)(cid:79)(cid:3)(cid:76)(cid:81)(cid:89)(cid:72)(cid:81)(cid:87)(cid:82)(cid:85)(cid:92)   includes  material,  chemicals  and  natural  resources  being  used  in  the  mining  and 
refining process.

• (cid:41)(cid:76)(cid:81)(cid:76)(cid:86)(cid:75)(cid:72)(cid:71)(cid:3)(cid:74)(cid:82)(cid:82)(cid:71)(cid:86)(cid:3)(cid:76)(cid:81)(cid:89)(cid:72)(cid:81)(cid:87)(cid:82)(cid:85)(cid:92) is the finished product soda ash.

• (cid:54)(cid:87)(cid:82)(cid:85)(cid:72)(cid:86)(cid:3)(cid:76)(cid:81)(cid:89)(cid:72)(cid:81)(cid:87)(cid:82)(cid:85)(cid:92) includes parts, materials and operating supplies which are typically consumed in the production 
of soda ash and currently available for future use.

(cid:51)(cid:85)(cid:82)(cid:83)(cid:72)(cid:85)(cid:87)(cid:92)(cid:15)(cid:3)(cid:51)(cid:79)(cid:68)(cid:81)(cid:87)(cid:15)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:40)(cid:84)(cid:88)(cid:76)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87) - Property, plant, and equipment are stated at cost less accumulated depreciation. 
Depreciation is computed over the estimated useful lives of depreciable assets, using the straight-line method. 
The estimated useful lives applied to depreciable assets are as follows:

Land improvements
Depletable land
Buildings and building improvements
Internal-use computer software
Machinery and equipment
Furniture and fixtures

Useful Lives
10 years
15-60 years
10-30 years
3-5 years
5-20 years
10 years

The Company's policy is to evaluate property, plant, and equipment for impairment whenever events or changes 
in circumstances indicate that its carrying amount may not be recoverable.  An indicator of potential impairment 
would include situations when the estimated future undiscounted cash flows are less than the carrying value. The 
amount of any impairment then recognized would be calculated as the difference between estimated fair value 
and the carrying value of the asset.

9

(cid:39)(cid:72)(cid:85)(cid:76)(cid:89)(cid:68)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:44)(cid:81)(cid:86)(cid:87)(cid:85)(cid:88)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:43)(cid:72)(cid:71)(cid:74)(cid:76)(cid:81)(cid:74)(cid:3)(cid:36)(cid:70)(cid:87)(cid:76)(cid:89)(cid:76)(cid:87)(cid:76)(cid:72)(cid:86) - The Company may enter into derivative contracts from time to 
time to manage exposure to the risk of exchange rate changes on its foreign currency transactions, the risk of 
changes in natural gas prices, and the risk of the variability in interest rates on borrowings. Gains and losses on 
derivative contracts are reported as a component of the underlying transactions. The Company follows hedge 
accounting for its hedging activities. All derivative instruments are recorded on the  balance sheet at their fair 
values. The accounting for changes in the fair value of a derivative depends on the intended use of the derivative 
and the resulting designation. The Company designates its derivatives based upon criteria established for hedge 
accounting under generally accepted accounting principles. For a derivative designated as a fair value hedge, the 
gain or loss is recognized in earnings in the period of change together with the offsetting gain or loss on the 
hedged item attributed to the risk being hedged. For a derivative designated as a cash flow hedge, the effective 
portion of the derivative’s gain or loss is initially reported as a component of accumulated other comprehensive 
income  (loss)  and  subsequently  reclassified  into  earnings  when  the  hedged  exposure  affects  earnings. Any 
significant ineffective portion of the gain or loss is reported in earnings immediately. For derivatives not designated 
as hedges, the gain or loss is reported in earnings in the period of change. The natural gas physical forward 
contracts are accounted for under the normal purchases and normal sales scope exception.

The company has entered into interest rate swap contracts, designed as cash flow hedges, to mitigate the exposure 
to possible increases in interest rates. These contracts are for periods consistent with the exposure being hedged 
and will mature on July 18, 2018, the maturity date of the long-term debt under the Ciner Wyoming Credit Facility. 
These contracts had an aggregate notional value of $74,000 and $76,000 at December 31, 2015 and December 
31,  2014,  respectively. At  December  31,  2015,  it  was  anticipated  that  $699  of  losses  currently  recorded  in 
accumulated other comprehensive income will be reclassified into earnings within the next 12 months.

In 2015, the Company enter into natural gas forward contracts, designed as cash flow hedges, to mitigate volatility 
in the price of certain of the natural gas the Company consumes. These contracts generally have various maturities 
through 2020. These contracts as of December 31, 2015, had an aggregate notional value of $15,831. The Company 
had no similar contracts outstanding as of December 31, 2014. At December 31, 2015, it was anticipated that 
$1,021 of losses currently recorded in accumulated other comprehensive income will be reclassified into earnings 
within the next 12 months.

The Company enters into foreign exchange forward contracts to hedge certain firm commitments denominated 
in  currencies  other  than  the  U.S.  dollar.  However,  the  Company  has  not  applied  hedge  accounting  for  these 
contracts at December 31, 2015. These contracts are for periods consistent with the exposure being hedged and 
generally have maturities of one year or less. These contracts, which are predominantly used to purchase U.S. 
dollars and sell Euros, had an aggregate notional value of $4,160 and $6,900 at December 31, 2015 and 2014, 
respectively.

10

The following table presents the fair value of derivative assets and liabilities and the respective balance sheet 
locations as of:

(In millions)

Derivatives designated as hedges:

Interest rate swap contracts - current

Natural gas forward contracts - current

Natural gas forward contracts - non-
current
Total derivatives designated as hedging
instruments
Derivatives not designated as hedging
instruments:

Foreign exchange forward contracts
Total derivatives not designated as
hedging instruments

Total derivatives

Assets

Liabilities

December 31,
 2015

December 31,
 2014

December 31,
 2015

December 31,
 2014

Balance
Sheet
Location

Fair
Value

Balance
Sheet
Location

Fair
Value

Balance
Sheet
Location

Fair
Value

Balance
Sheet
Location

Fair
Value

$

$

$

$

$

—

—

—

—

129

129

129

Other
current
assets

$

$

$

$

$

—

—

—

—

617

617

617

Other
current
assets

Accrued
Expenses
Accrued
Expenses
Other
non-
current
liabilities

$

819

Accrued
Expenses

$

748

1,021

2,351

—

—

$ 4,191

$

748

$

$

—

—

$

$

$ 4,191

$

748

(cid:44)(cid:81)(cid:70)(cid:82)(cid:80)(cid:72)(cid:3)(cid:55)(cid:68)(cid:91) - The Company is organized as a pass-through entity for federal income tax purposes. As a result, 
the members are responsible for federal income taxes based on their respective share of taxable income. Net 
income for financial statement purposes may differ significantly from taxable income reportable to members as 
a result of differences between the tax bases and financial reporting bases of assets and liabilities and the taxable 
income allocation requirements under the membership agreement.

(cid:53)(cid:72)(cid:70)(cid:79)(cid:68)(cid:80)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:38)(cid:82)(cid:86)(cid:87)(cid:86) - The Company is obligated to return the land beneath its refinery and tailings ponds to its 
natural condition upon completion of operations and is required to return the land beneath its rail yard to its natural 
condition upon termination of the various lease agreements.  

The Company accounts for its land reclamation liability as an asset retirement obligation, which requires that 
obligations associated with the retirement of a tangible long-lived asset be recorded as a liability when those 
obligations are incurred, with the amount of the liability initially measured at fair value. Upon initially recognizing 
a liability for an asset retirement obligation, an entity must capitalize the cost by recognizing an increase in the 
carrying amount of the related long-lived asset. Over time, the liability is accreted to its present value each period, 
and the capitalized cost is depreciated over the estimated useful life of the related asset. Upon settlement of the 
liability, an entity either settles the obligation for its recorded amount or incurs a gain or loss upon settlement.  

The estimated original liability calculated in 1996 for the refinery and tailing ponds was calculated based on the 
estimated useful life of the mine, which was 80 years, and on external and internal estimates as to the cost to 
restore the land in the future and state regulatory requirements. In 2016, the mining reserve will be amortized 
over a remaining life of 67 years. During 2015, 2014 and 2013 the remaining life was 68 years, 66 years, and 67 
years,  respectively.  The  liability  was  discounted  using  a  weighted  average  credit-adjusted  risk  free  rate  of 
approximately 6% and is being accreted throughout the estimated life of the related assets to equal the total 
estimated costs with a corresponding entry being recorded to cost of products sold. 

During 2011, the Company constructed a rail yard to facilitate loading and switching of rail cars. The Company 
is required to restore the land on which the rail yard is constructed to its natural conditions. The estimated liability 

11

for restoring the rail yard to its natural condition is calculated based on the land lease life of 30 years and on 
external and internal estimates as to the cost to restore the land in the future. The liability is discounted using a 
credit-adjusted risk-free rate of 4.25% and is being accreted throughout the estimated life of the related assets to 
equal the total estimated costs with a corresponding entry being recorded to cost of products sold.  

(cid:41)(cid:68)(cid:76)(cid:85)(cid:3)(cid:57)(cid:68)(cid:79)(cid:88)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:41)(cid:76)(cid:81)(cid:68)(cid:81)(cid:70)(cid:76)(cid:68)(cid:79)(cid:3)(cid:44)(cid:81)(cid:86)(cid:87)(cid:85)(cid:88)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)  - The following methods and assumptions were used to estimate the fair 
values of each class of financial instruments:

Financial  instruments  consist  primarily  of  cash  and  cash  equivalents,  accounts  receivable,  accounts  payable, 
accrued expenses and long-term debt. The carrying amounts of cash and cash equivalents, accounts receivable, 
accounts payable and accrued expenses approximate their fair value because of the nature of such instruments. 
Our long-term debt and derivative financial instruments are measured at their fair values with Level 2 inputs 
based on quoted market values for similar but not identical financial instruments.

Long-Term Debt - The fair value of our long-term debt is based on present rates for indebtedness with similar 
amounts, durations and credit risks.  

Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant 
to the fair value measurement.  Fair value accounting requires that these financial assets and liabilities be classified 
into one of the following three categories:

•  Level 1-inputs to the valuation methodology are quoted prices (unadjusted) for an identical asset or liability 
in an active market.

•  Level 2-inputs to the valuation methodology include quoted prices for a similar asset or liability in an active 
market or model-derived valuations in which all significant inputs are observable for substantially the full term 
of the asset or liability.

•  Level 3-inputs to the valuation methodology are unobservable and significant to the fair value measurement 
of the asset or liability.

(cid:54)(cid:88)(cid:69)(cid:86)(cid:72)(cid:84)(cid:88)(cid:72)(cid:81)(cid:87)(cid:3)(cid:40)(cid:89)(cid:72)(cid:81)(cid:87)(cid:86) - The Company has evaluated all subsequent events through March 11, 2016, the date the 
financial statements were available to be issued.

(cid:53)(cid:72)(cid:70)(cid:72)(cid:81)(cid:87)(cid:79)(cid:92)(cid:3)(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)(cid:71)(cid:3)(cid:36)(cid:70)(cid:70)(cid:82)(cid:88)(cid:81)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:54)(cid:87)(cid:68)(cid:81)(cid:71)(cid:68)(cid:85)(cid:71)(cid:86) - In May 2014, the Financial Accounting Standards Board ("FASB") issued 
Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) that 
requires companies to recognize revenue when a customer obtains control rather than when companies have 
transferred substantially all risks and rewards of a good or service. In August 2015, the amendments in ASU 
2015-14 defer the effective date of ASU 2014-09 for all entities by one year. Public business entities, certain not-
for-profit  entities,  and  certain  employee  benefit  plans  should  apply  the  guidance  in ASU  2014-09  to  annual 
reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting 
period.  Earlier  application  permitted  only  as  of  annual  reporting  period  beginning  after  December  15,  2016, 
including interim reporting periods therein.  The Company is currently assessing the impact the adoption of ASU 
2014-09 may have on its financial statements, as well as the available transition methods.

In  July  2015,  the  FASB  issued ASU  No.  2015-11,  Inventory  (Topic  330):  Simplifying  the  Measurement  of 
Inventory. ASU 2015-11 requires that inventory within the scope of this update be measured at the lower of cost 
and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, 
less reasonably predictable costs of completion, disposal, and transportation. The amendments in this update do 
not  apply  to  inventory  that  is  measured  using  last-in,  first-out  (LIFO)  or  the  retail  inventory  method.  The 
amendments apply to all other inventory, which includes inventory that is measured using first-in, first-out (FIFO) 
or average cost. For public business entities, the amendments in this update are effective for fiscal years beginning 
after December 15, 2016, including interim periods within those fiscal years. For all other entities, the amendments 
in this Update are effective for fiscal years beginning after December 15,2016, and interim periods within fiscal 

12

years beginning after December 15, 2017. Earlier application is permitted by all entities as of the beginning of 
an interim or annual reporting period. The amendments should be applied prospectively. The adoption of this 
guidance is not expected to have a material impact upon our financial condition or results of operations.

In  January  2016,  the  FASB  issued ASU  No.  2016-01,  Financial  Instruments  -  Overall  (Subtopic  825-10): 
Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). The standard amend 
certain aspects of recognition, measurement, presentation, and disclosure of financial assets and liabilities. ASU 
2016-01 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. 
The Company is currently evaluating the potential impact the adoption of ASU 2016-01 will have on its financial 
statements, as well as available transition methods.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The update amends existing standards 
for accounting for leases by lessees, with accounting for leases by lessors remaining largely unchanged from 
current guidance. The update requires that lessees recognize a lease liability and a right of use asset for all leases 
(with the exception of short-term leases) at the commencement date of the lease and disclose key information 
about leasing arrangements. The update is effective for interim and annual periods beginning after December 15, 
2018 and must be adopted using a modified retrospective transition. The ASU No. 2016-02 provides for certain 
practical expedients and early adoption is permitted. The Company is evaluating the potential impact the adoption 
of ASU No. 2016-02 will have on its consolidated financial statements.

3. ACCOUNTS RECEIVABLE, NET

Accounts receivable, net as of December 31, 2015 and 2014 consists of the following:

2015

2014

Trade receivables
Other receivables

Allowance for doubtful accounts
Total

4. INVENTORY

$

$

27,163
6,767
33,930
(142)
33,788

Inventory as of December 31, 2015 and 2014 consists of the following:

Raw materials
Finished goods
Stores inventory
Total
Less:  Stores inventory reclassed to other non-current assets
Inventory - current

2015

9,110
10,675
27,089
46,874
(20,498)
26,376

$

$

$

$

$

$

$

$

24,691
10,854
35,545
(88)
35,457

2014

6,413
10,363
26,461
43,237
(20,771)
22,466

Subsequent to the issuance of the Company's financial statements for the year ended December 31, 2014, the 
Company  identified  a  balance  sheet  misclassification  relating  to  the  portion  of  stores  inventory  that  is  not 
reasonably expected to be used during the year. That amount was presented as a component of inventory (a current 
asset) rather than as a non-current asset in the December 31, 2014 balance sheet. The correction of this error 
resulted in a decrease of current assets and inventory and a corresponding increase in other non-current assets of 
$20,771. The result of this correction did not impact the Companies statements of operations and comprehensive 
income, members' equity, and cash flows for any period presented. Management does not believe this misstatement 
is individually or collectively material to the financial statements.

13

5. PROPERTY, PLANT, AND EQUIPMENT, NET

Property, plant, and equipment as of December 31, 2015 and 2014 consists of the following:

Land and land improvements
Depletable land
Buildings and building improvements
Internal-use computer software
Machinery and equipment
Total
Less accumulated depreciation, depletion and amortization
Total net book value
Construction in progress
Property, plant, and equipment, net

2015

2014

192
2,957
132,504
4,863
577,472
717,988
(547,277)
170,711
42,108
212,819

$

$

192
2,957
129,514
4,468
567,289
704,420
(536,163)
168,257
33,145
201,402

$

$

Depreciation, depletion and amortization expense on property, plant and equipment was $22,519, $21,235 and 
$22,723 for the years ended December 31, 2015, 2014 and 2013, respectively.

6. OTHER NON-CURRENT ASSETS

Other non-current assets as of December 31, 2015 and 2014 consist of the following:

Stores inventory
Deferred financing costs
Total

7.  ACCRUED EXPENSES

2015

2014

$

$

20,498
528
21,026

$

$

20,771
880
21,651

Accrued expenses as of December 31, 2015 and 2014 consists of the following:

Accrued freight costs
Accrued energy costs
Accrued royalty costs
Accrued employee compensation
Accrued other taxes
Accrued derivatives
Other accruals
Total

2015

2014

135
5,185
4,834
3,950
4,532
1,841
4,556
25,033

$

$

1,373
5,718
4,445
6,739
4,608
748
5,657
29,288

$

$

14

8. DEBT

Long-term debt as of December 31, 2015 and 2014 consists of the following:

Variable Rate Demand Revenue Bonds, principal due October 1, 2018,
interest payable monthly, bearing monthly interest rate of 0.11% (2015)
and 0.14% (2014)

Variable Rate Demand Revenue Bonds, principal due August 1, 2017,
interest payable monthly, bearing monthly interest rate of 0.11% (2015)
and 0.14% (2014)

Ciner Wyoming Credit Facility, unsecured principal expiring on July 18,
2018, variable interest rate was a weighted average rate of 2.0742%
(2015) and 1.9781% (2014)

Total debt

Less current portion of long-term debt

Total long-term debt

2015

2014

$

11,400

$

11,400

8,600

8,600

90,000

110,000

—

$

110,000

$

125,000

145,000

—

145,000

Aggregate maturities required on long-term debt at December 31, 2015 are as follows:

2017
2018
Total

(cid:50)(cid:69)(cid:86)(cid:69)(cid:78)(cid:85)(cid:69)(cid:0)(cid:34)(cid:79)(cid:78)(cid:68)(cid:83)

$

$

8,600
101,400
110,000

The Variable Rate Demand Revenue Bonds are held by CINWYLLC.  These revenue bonds require the Company 
to  maintain  standby  letters  of  credit  totaling  $20,333  at  December 31,  2015.  These  letters  of  credit  require 
compliance  with  certain  covenants,  including  minimum  net  worth,  maximum  debt  to  net  worth,  and  interest 
coverage ratios. As of December 31, 2015, the Company was in compliance with these debt covenants. 

(cid:35)(cid:73)(cid:78)(cid:69)(cid:82)(cid:0)(cid:55)(cid:89)(cid:79)(cid:77)(cid:73)(cid:78)(cid:71)(cid:0)(cid:35)(cid:82)(cid:69)(cid:68)(cid:73)(cid:84)(cid:0)(cid:38)(cid:65)(cid:67)(cid:73)(cid:76)(cid:73)(cid:84)(cid:89)

On July 18, 2013, the Company entered into a $190,000 senior unsecured revolving credit facility, as amended 
on October 30, 2014 (as amended, the "Ciner Wyoming Credit Facility"), with a syndicate of lenders, which will 
mature on the fifth anniversary of the closing date of such credit facility. The Ciner Wyoming Credit Facility 
provides for revolving loans to fund working capital requirements, capital expenditures, to consummate permitted 
acquisitions and for all other lawful Company purposes. The Ciner Wyoming Credit Facility has an accordion 
feature that allows Ciner Wyoming to increase the available revolving borrowings under the facility by up to an 
additional  $75,000,  subject  to  the  Company  receiving  increased  commitments  from  existing  lenders  or  new 
commitments from new lenders and the satisfaction of certain other conditions. In addition, the Ciner Wyoming 
Credit Facility includes a sublimit up to $20,000 for same-day swing line advances and a sublimit up to $40,000 
for letters of credit. The Company's obligations under the Ciner Wyoming Credit Facility are unsecured.

The Ciner Wyoming Credit Facility contains various covenants and restrictive provisions that limit (subject to 
certain exceptions) the Company's ability to:

•  make distributions on or redeem or repurchase units;

• 

incur or guarantee additional debt;

•  make certain investments and acquisitions;

• 

incur certain liens or permit them to exist;

•  enter into certain types of transactions with affiliates of the Company;

15

•  merge or consolidate with another Company; and

• 

transfer, sell or otherwise dispose of assets.

The Ciner Wyoming Credit Facility also requires quarterly maintenance of a leverage ratio (as defined in the 
Ciner Wyoming Credit Facility) of not more than 3.00 to 1.00 and a fixed charge coverage ratio (as defined in 
the Ciner Wyoming Credit Facility) of not less than 1.10 to 1.00 for the 2014 and 2015 fiscal years, respectively 
and not less than 1.15 to 1.00 thereafter.  The Ciner Wyoming Credit Facility also requires that consolidated 
capital expenditures, as defined in the Ciner Wyoming Credit Facility, not exceed $50,000 in any fiscal year.

In addition, the Ciner Wyoming Credit Facility contains events of default customary for transactions of this nature, 
including (i) failure to make payments required under the Ciner Wyoming Credit Facility, (ii) events of default 
resulting from failure to comply with covenants and financial ratios in the Ciner Wyoming Credit Facility, (iii) the 
occurrence of a change of control, (iv) the institution of insolvency or similar proceedings against Ciner Wyoming 
and (v) the occurrence of a default under any other material indebtedness Ciner Wyoming may have. Upon the 
occurrence and during the continuation of an event of default, subject to the terms and conditions of the Ciner 
Wyoming Credit Facility, the lenders may terminate all outstanding commitments under the Ciner Wyoming 
Credit Facility and may declare any outstanding principal of the Ciner Wyoming Credit Facility debt, together 
with accrued and unpaid interest, to be immediately due and payable.

Under the Ciner Wyoming Credit Facility, a change of control is triggered if Ciner Resources and its wholly-
owned subsidiaries, directly or indirectly, cease to own all of the equity interests, or cease to have the ability to 
elect a majority of the board of directors (or similar governing body) of the general partner of CINR (or any entity 
that performs the functions the  general partner of CINR). In addition, a change of control would be triggered if 
CINR ceases to own at least 50.1% of the economic interests in the Company or cease to have the ability to elect 
a majority of the members of the Company's board of managers.

The Company was in compliance with all terms under its long-term debt agreements as of December 31, 2015.
Loans under the Ciner Wyoming Credit Facility bear interest at the Company's option at either:

•  a Base Rate, which equals the highest of (i) the federal funds rate in effect on such day plus 0.50%, 
(ii) the administrative agent's prime rate in effect on such day and (iii) one-month LIBOR plus 1.0%, in 
each case, plus an applicable margin; or

•  a LIBOR Rate plus an applicable margin.

The unused portion of the Ciner Wyoming Credit Facility is subject to an unused line fee ranging from 0.275% 
to 0.350% per annum based on the Company's then current consolidated leverage ratio.

In addition, there are restrictions in the Ciner Enterprises Credit Agreement that affect the Partnership. Specifically, 
Ciner Enterprises has agreed (subject to certain exceptions in addition to those described below) that it will not, 
and will not permit any of its subsidiaries, including Ciner Wyoming and us, to:

•  make distributions on or redeem or repurchase equity interests, other than distributions to our and 
Ciner Wyoming's unitholders;

incur or guarantee additional debt, other than debt incurred under the Revolving Credit Facility or the 

• 
Ciner Wyoming Credit Facility, among certain other types of permitted debt;

•  make certain investments and acquisitions, other than investments in each of Ciner Wyoming and us, 
in an amount not to exceed $10 million and $2 million per calendar year, respectively, and other exceptions 
set forth therein; 

incur certain liens or permit them to exist, other than, with respect to our and Ciner Wyoming's liens, 

• 
an aggregate amount outstanding at any time equal to $200,000 and $1 million, respectively;

16

•  enter into certain types of transactions with affiliates, other than transactions between Ciner Wyoming 
and us;

•  merge or consolidate with another company; or

transfer, sell, or otherwise dispose of assets, other than our and Ciner Wyoming's dispositions of assets 

• 
with a net book value not to exceed $500,000 and $2.5 million, respectively, in any given year.

9. OTHER NON-CURRENT LIABILITIES

Other non-current liabilities as of December 31, 2015 and 2014 consists of the following:

Reclamation Reserve
Derivative instruments and hedges, fair value liabilities
Total

Details of the reclamation reserve shown above are as follows:

Reclamation reserve at beginning of year
Accretion expense
Reclamation reserve at end of year

10. EMPLOYEE BENEFIT PLANS

2015

2014

$

$

$

$

4,457
2,351
6,808

4,192
265
4,457

$

$

$

$

2015

4,192
—
4,192

2014

3,779
413
4,192

The Company participates in various benefit plans offered and administered by CRC (administered by OCIE 
prior to the Transaction) and is allocated its portions of the annual costs related thereto. The specific plans are 
as follows:

(cid:50)(cid:69)(cid:84)(cid:73)(cid:82)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:0)(cid:48)(cid:76)(cid:65)(cid:78)(cid:83)(cid:0)(cid:13) Benefits provided under the Ciner Pension Plan for Salaried Employees and Ciner Pension 
Plan  for  Hourly  Employees  are  based  upon  years  of  service  and  average  compensation  for  the  highest  60 
consecutive months of the employee's last 120 months of service, as defined. Each plan covers substantially all 
full-time employees hired before May 1, 2001. CRC's funding policy is to contribute an amount within the range 
of the minimum required and the maximum tax-deductible contribution. The Company's allocated portion of 
net periodic pension cost was $7,731, $3,140 and $8,421 for the years ended December 31, 2015, 2014 and 
2013, respectively.  The increase in pension costs in 2015, was driven by unfavorable effects of lower actuarial 
discount rates and market returns assumptions in 2015 versus 2014.

(cid:51)(cid:65)(cid:86)(cid:73)(cid:78)(cid:71)(cid:83)(cid:0)(cid:48)(cid:76)(cid:65)(cid:78)(cid:0)- The Ciner 401(k) Retirement Plan covers all eligible hourly and salaried employees. Eligibility 
is limited to all domestic residents and any foreign expatriates who are in the United States indefinitely.  The 
plan permits employees to contribute specified percentages of their compensation, while the Company makes 
contributions based upon specified percentages of employee contributions. The Plan was amended such that 
participants hired on or subsequent to May 1, 2001, will receive an additional contribution from the Company 
based on a percentage of the participant’s base pay. Contributions made by the Company for the years ended 
December 31, 2015, 2014 and 2013 were $2,582, $2,428 and $2,795, respectively.

(cid:48)(cid:79)(cid:83)(cid:84)(cid:82)(cid:69)(cid:84)(cid:73)(cid:82)(cid:69)(cid:77)(cid:69)(cid:78)(cid:84)(cid:0)(cid:34)(cid:69)(cid:78)(cid:69)(cid:70)(cid:73)(cid:84)(cid:83) - Most of the Company's employees are eligible for postretirement benefits other than 
pensions if they reach retirement age while still employed.

CRC  accounts  for  postretirement  benefits  on  an  accrual  basis  over  an  employee’s  period  of  service.  The 
postretirement plan, excluding pensions, are not funded, and CRC has the right to modify or terminate the plan. 
Effective January 1, 2013, the postretirement benefits for non-grandfathered retirees were amended to

17

replace the medical coverage for post-65-year-old members with a fixed dollar contribution amount. As a result 
of the amendment, the accumulated and projected benefit obligation for CRC's postretirement benefits
decreased by approximately $8,700 and resulted in a prior service credit of approximately $7,700 which was 
recognized as a reduction of net periodic postretirement benefit costs through year 2014. The post-retirement 
benefits had a benefits obligation of $21,263 and $22,765 for the years ended December 31, 2015 and 2014, 
respectively. The Company's allocated portion of postretirement benefit costs was an expense of $495 for the year 
ended  December  31,  2015  and  income  of  $260  and  $55  for  the  years  ended  December 31,  2014  and  2013, 
respectively.

11.  ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Accumulated  other  comprehensive  income  (loss)  as  of  December  31,  2015,  2014  and  2013  consists  of  the 
following:

BALANCE at January 1, 2013

Other comprehensive loss before reclassification

Amounts reclassified from accumulated other comprehensive loss

Net current-period other comprehensive income (loss)

BALANCE at December 31, 2013

Other comprehensive loss before reclassification

Amounts reclassified from accumulated other comprehensive loss

Net current-period other comprehensive income (loss)

BALANCE at December 31, 2014

Other comprehensive loss before reclassification

Amounts reclassified from accumulated other comprehensive loss

Net current-period other comprehensive income (loss)

BALANCE at December 31, 2015

Interest Rate
Swap
Contract

Natural Gas
Forwards
Contracts

Total

$

$

$

$

(580) $
(849)

879

30
(550) $

(1,294)

1,096
(198)
(748) $

— $
—

—

—

— $

—

—

—

— $

(1,098)

(3,722)

1,027
(71)
(819) $

350
(3,372)
(3,372) $

(580)
(849)

879

30
(550)
(1,294)

1,096
(198)
(748)
(4,820)

1,377
(3,443)
(4,191)

The components of other comprehensive income/(loss), attributable to the Company, that have been reclassified 
out of Accumulated other comprehensive income consisted of the following:

2015

2014

2013

Affected Line Items on
the Consolidated
Statements of Operations
and Comprehensive
Income

Details about other comprehensive
income/(loss) components:
Gains and losses on cash flow hedges:
Interest rate swap contracts
Commodity hedge contracts
Total reclassifications for the period

$

$

1,027
350
1,377

$

$

1,096
—
1,096

$

$

Interest expense
879
— Cost of Products Sold
879

18

12. COMMITMENTS AND CONTINGENCIES

The Company leases mineral rights from the U.S. Bureau of Land Management, the state of Wyoming, Rock 
Springs Royalty Corp., a wholly owned subsidiary of Anadarko Holding Company (AHC), and other private 
parties. All of these leases provide for royalties based upon production volume. The remaining leases provide for 
minimum lease payments as detailed in the table below. The Company has a perpetual right of first refusal with 
respect to these leases and intends to continue renewing the leases as has been its practice.

The Company entered into a 10 year rail yard switching and maintenance agreement with a third party, Watco 
Companies, LLC, on December 1, 2011. Under the agreement, Watco provides rail-switching services at the 
Company’s rail yard. The Company's rail yard is constructed on land leased by Watco from Rock Springs Grazing 
Association and Anadarko Land Corp; the Rock Springs Grazing Association land lease is renewable every 
5 years for a total period of 30 years, while the Anadarko Land Corp. lease is perpetual. The Company has an 
option agreement with Watco to assign these leases to the Company at any time during the land lease term.

The Company entered into two track lease agreements, collectively, not to exceed 10 years with Union Pacific 
Company for certain rail tracks used in connection with the rail yard.

As of December 31, 2015, the total minimum rental commitments under the Company’s various operating leases, 
including renewal periods are as follows:

2016
2017
2018
2019
2020
2021 and thereafter
Total

Leased Land

Track Leases

Total

$

$

75
75
75
75
75
1,500
1,875

70
70
70
70
70
33
383

145
145
145
145
145
1,533
2,258

CRC, on behalf of the Company, typically enters into operating lease contracts with various lessors for railcars 
to transport product to customer locations and warehouses. Rail car leases under these contractual commitments 
range for periods from 1 to 7 years. CRC's obligations related to these rail car leases are $11,972 in 2016, $10,483 
in 2017, $9,250 in 2018, $8,339 in 2019, $5,387 in 2020 and $5,707 in 2021 and thereafter. Total lease expense 
was  approximately  $12,415,  $9,469  and  $10,165  for  the  years  ended  December  31,  2015,  2014  and  2013, 
respectively.

(cid:51)(cid:88)(cid:85)(cid:70)(cid:75)(cid:68)(cid:86)(cid:72)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:16)(cid:3) The Company has natural gas supply contracts to mitigate volatility in the price of 
natural gas. As of December 31, 2015, these contracts totaled $82,634 for the purchase of a portion of our gas 
requirement over approximately the next five years. The supply purchase agreements have specific commitments 
of $24,101 in 2016, $19,942 in 2017 $17,437 in 2018, $11,627 in 2019 and $9,527 in 2020. The Company has a 
separate contract that expires in 2021, for transportation of natural gas with an average annual cost of approximately 
$3,157 per year.

(cid:47)(cid:72)(cid:74)(cid:68)(cid:79)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:40)(cid:81)(cid:89)(cid:76)(cid:85)(cid:82)(cid:81)(cid:80)(cid:72)(cid:81)(cid:87)(cid:68)(cid:79)(cid:3)(cid:16)(cid:3) From time to time the Company is party to various claims and legal proceedings 
related to its business. Although the outcome of these proceedings cannot be predicted with certainty, management  
does not currently expect any of the legal proceedings the Company is involved in to have a material effect on 
its business, financial condition and results of operations. The Company cannot predict the nature of any future 
claims or proceedings, nor the ultimate size or outcome of existing claims and legal proceedings and whether 
any damages resulting from them will be covered by insurance.

(cid:50)(cid:73)(cid:73)(cid:16)(cid:37)(cid:68)(cid:79)(cid:68)(cid:81)(cid:70)(cid:72)(cid:3)(cid:54)(cid:75)(cid:72)(cid:72)(cid:87)(cid:3)(cid:36)(cid:85)(cid:85)(cid:68)(cid:81)(cid:74)(cid:72)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:16)(cid:3)The Company has a self-bond agreement with the Wyoming Department of 
Environmental Quality under which it commits to pay directly for reclamation costs at our Wyoming Plant site. 

19

As of December 31, 2015, the amount of the bond was $33,875, which is the amount we would need to pay the 
State of Wyoming for reclamation costs if we cease mining operations currently. The amount of this self-bond is 
subject to change upon periodic re-evaluation by the Land Quality Division. 

13. AFFILIATES TRANSACTIONS

CRC is the exclusive sales agent for the Company and through its membership in ANSAC, CRC is responsible 
for promoting and increasing the use and sale of soda ash and other refined or processed sodium products produced. 
All actual sales and marketing costs incurred by CRC are charged directly to the Company. Selling, general and 
administrative expenses also include amounts charged to the Company by CRC and CINR principally consisting 
of salaries, benefits, office supplies, professional fees, travel, rent and other costs of certain assets used by the 
Company. These transactions do not necessarily represent arm's length transactions and may not represent all 
costs if the Company operated on a standalone basis.

As a result of the closing of the Transaction discussed in Note 1 - "Corporate Structure," CINE owns indirectly 
and controls the Company, therefore, OCIE and subsidiaries, including OCI Alabama LLC, are no longer related 
parties of the Company as of the Transaction date.  The following table includes transactions with OCIE and 
subsidiaries prior to the Transaction date.

The total costs (recoveries) charged to the Company by affiliates for the years ended December 31, 2015, 2014 
and 2013 are as follows:

OCI Enterprises Inc.
CRC
ANSAC (1)
CINR
Total selling, general and administrative expenses - affiliates

2015

2014

2013

$

$

4,535
5,587
3,793
(11)
13,904

$

$

8,955
3,415
2,930
892
16,192

$

$

5,537
4,387
2,582
—
12,506

(1) ANSAC allocates its expenses to its members using a pro rata calculation based on sales.

Cost of products sold includes logistics services charged by ANSAC.  For the years ended December 31, 2015, 
2014 and 2013 these costs were $8,134, $9,194 and $6,692, respectively.

Net sales to affiliates for the years ended December 31, 2015, 2014 and 2013 are as follows:

ANSAC
OCI Alabama LLC
OCI Company Limited
Total

2015
261,023
4,266
—
265,289

$

$

2014
230,762
5,923
—
236,685

$

$

2013
200,413
7,282
3,950
211,645

$

$

As of December 31, 2015 and 2014, the Company had due from/to with affiliates as follows:

2015

2014

CINE
OCI Enterprises Inc.
CRC
Ciner Resources Europe NV
Other
Total

$

$

Due from
Affiliates

25
—
6,942
4,814
544
12,325

20

$

Due to Affiliates
$

Due from
Affiliates

— $

— $
—
1,888
—
2,746
4,634

$

Due to Affiliates
—
2,848
1,171
—
1,328
5,347

$

1,594
8,268
9,183
444
19,489

As of December 31, 2015, included in Accounts receivable, net is $564 receivable from OCIE and subsidiaries 
and included within Accrued expenses is $464 payable to OCIE and subsidiaries.

14. MAJOR CUSTOMERS AND SEGMENT REPORTING

Our operations are similar in nature of products we provide and type of customers we serve. As the Company 
earns substantially all of its revenues through the sale of soda ash mined at a single location, we have concluded 
that we have one operating segment for reporting purposes.  The net sales by geographic area for the years ended 
December 31, 2015, 2014 and 2013 are as follows:

Domestic
International:
ANSAC
Other
Total international
Total net sales

15. SUBSEQUENT EVENTS

2015
194,036

$

2014
194,801

$

2013
195,062

261,024
31,333
292,357
486,393

$

230,762
39,469
270,231
465,032

$

200,413
46,657
247,070
442,132

$

$

On January 13, 2016, the members of the Board of Managers of Ciner Wyoming, approved a cash distribution 
to the members in the aggregate amount of $25,000.  The distribution was paid on February 5, 2016.

******

21

Unitholder Information

Information regarding Natural Resource Partners L.P. is located on the partnership’s website. On the site is 
operational and financial information as well as all SEC filings and our corporate governance documents, 
including our Code of Business Conduct and Ethics, our Corporate Governance Guidelines and Board of 
Directors’ Audit Committee Charter. Requests for copies of the annual report or other data may be made 
through the website or by contacting Investor Relations free of charge. 

CONTACT NRP BOARD

We have established procedures for contacting the non-management members of the NRP Board of 
Directors. To communicate any concerns or issues to the Board of Directors, please direct any 
correspondence to:

Chairman of the CNG Committee 
NRP Board of Directors 
1201 Louisiana Street, Suite 3400 
Houston, TX 77002

SCHEDULE K-1

Unitholders receive Schedule K-1 packages that summarize their allocated share of the partnership’s 
reportable tax items for the calendar year. Generally, these K-1s are available on NRP’s website no later 
than the end of February. Unitholders should refer questions regarding their Schedule K-1 to the following:

Natural Resource Partners L.P. 
Tax Package Support 
P.O. Box 799060 
Dallas, TX 75379-9060 
Fax: 1.866.554.3842 
Toll Free: 1.888.334.7102

FORWARD-LOOKING STATEMENTS

Statements included in this annual report may constitute forward-looking statements. In addition,  
we and our representatives may from time to time make other oral or written statements which are  
also forward-looking statements.

Such forward-looking statements include, among other things, statements regarding capital expenditures 
and acquisitions, expected commencement dates of mining, projected quantities of future production  
by our lessees producing from our reserves, and projected demand or supply for coal, trona, soda ash, 
aggregates and oil and gas that will affect sales levels, prices and royalties realized by us.

These forward-looking statements speak only as of the date hereof and are made based upon management’s 
current plans, expectations, estimates, assumptions and beliefs concerning future events impacting us 
and therefore involve a number of risks and uncertainties. We caution that forward-looking statements  
are not guarantees and that actual results could differ materially from those expressed or implied in the 
forward-looking statements.

You should not put undue reliance on any forward-looking statements. Please read “Item 1A. Risk Factors” 
of the Form 10-K for important factors that could cause our actual results of operations or our actual 
financial condition to differ.

PARTNERSHIP 
HEADQUARTERS

1201 Louisiana Street  
Suite 3400 
Houston, TX 77002 
713.751.7507

REGIONAL OFFICES

Coal and Hard Minerals 

5260 Irwin Road 
Huntington, WV 25705

VantaCore 

Headquarters 
1600 Market Street 
38th Floor 
Philadelphia, PA 19103

INVESTOR RELATIONS

Kathy Roberts 
1201 Louisiana Street 
Suite 3400 
Houston, TX 77002 
713.751.7555 
Email: kroberts@nrplp.com

STOCK EXCHANGE

Our units are listed on the  
New York Stock Exchange  
under the symbol NRP.

INDEPENDENT AUDITORS

Ernst & Young LLP 
5 Houston Center 
1401 McKinney, Suite 1200 
Houston, TX 77001-2007

TRANSFER AGENT  
AND REGISTRAR

American Stock Transfer  
and Trust Company 
Client Operations 
6201 15th Avenue 
Brooklyn, NY 11219 
Website: www.amstock.com 
Email: info@amstock.com 
800.937.5449

WEBSITE

www.nrplp.com

Design: Savage Brands, Houston TX

Natural Resource Partners L.P.

1201 Louisiana Street 
34th Floor
Houston, Texas 77002

www.nrplp.com