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Antofagasta

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FY2017 Annual Report · Antofagasta
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ANNUAL REPORT AND 
FINANCIAL STATEMENTS 2017

Antofagasta is a Chilean copper mining group with significant 
by‑product production and interests in transport.

The Group creates value for its stakeholders through the 
discovery, development and operation of copper mining assets.

The Group is committed to generating value in a safe 
and sustainable way throughout the commodity cycle.

STRATEGIC REPORT
OVERVIEW

2017 highlights
At a glance
Letter from the Chairman
Q&A with the Chief 
Executive Officer
The copper market 
Strategy
Key Performance Indicators
Risk management framework
Principal risks

OPERATING PERFORMANCE

Business model
Operating Review

1
2
4
6

8 
12 
14 
16 
19 

24 

26 

28 
31 
33 

Key inputs and cost base
Key relationships
Exploration activities
Business units 
34 
(mining and transport) 
Growth projects and opportunities  44 
48 

Financial Review 

COMMITTED TO CREATING 
SUSTAINABLE VALUE

Sustainability highlights 
Safety and health 
Employees 
Communities
Environment
Sustainability governance

54 

55 
56 
58 
60 
62 
65 

GOVERNANCE
Governance at a glance
Leadership

Chairman’s introduction 
Senior Independent Director’s 
introduction 
Group governance overview
Directors’ biographies
Board balance and skills
Roles in the Boardroom
Executive Committee  
members’ biographies

Effectiveness

Board activities
Board and Committee 
information flows

Accountability

Introduction to the Committees
Nomination and Governance 
Committee report
Board effectiveness reviews
Professional development
Audit and Risk Committee report
Sustainability and Stakeholder 
Management Committee report
Stakeholder engagement
Projects Committee report

Remuneration

Remuneration and Talent 
Management Committee report
Committee Chairman’s 
introduction
Remuneration at a glance
2017 Directors’ 
Remuneration Report
2017 Executive 
Remuneration Report
Summary of 2017 Directors’ 
Remuneration Policy

Relations with shareholders
Directors’ Report
Statement of Directors’ 
Responsibilities

68

70
72

74
76
78
79
80

82
83

84
86

88
89
90
96

98
100

102

103

105
106

109

118

121
123
125

FINANCIAL STATEMENTS
FINANCIAL PERFORMANCE

126 

Independent auditors’ report
Consolidated income statement
Consolidated statement 
of comprehensive income 
Consolidated statement 
of changes in equity
Consolidated balance sheet
Consolidated cash flow statement
Notes to the financial statements
Parent company financial 
statements

OTHER INFORMATION

Five year summary
Dividends to ordinary 
shareholders of the company
Ore reserves and mineral 
resources estimates
Glossary and definitions
Shareholder information

128 
133 

134

134
135 
136 
137 

186

193

194

196
206
211 

In this Annual Report, the terms “Company”, “Group”, 
“we”, “us”, “our” and “ourselves” are used to refer 
to Antofagasta plc and, unless the context requires 
otherwise, its subsidiaries. These terms may be used 
as collective expressions where general reference is 
made to the companies in the Group and/or where no 
useful purpose is served by identifying any particular 
company or companies.

 
 
OVERVIEW: 2017 HIGHLIGHTS

A YEAR OF STRONG 
PERFORMANCE

FATALITIES AND LOST TIME
INJURY FREQUENCY RATE
There were zero fatalities in the year and 
the Lost Time Injury Frequency Rate of the 
Group reduced to 1.4 accidents with lost time 
per million hours worked.

COPPER  
PRODUCTION1
Copper production of 704,300 tonnes a 0.7% 
decrease on 2016 on lower grades at Los 
Pelambres offset by Encuentro Oxides and 
full year of production at Antucoya.

NET CASH  
COSTS2
Net cash costs for the year were 4.2% higher 
than in 2016 due to higher input prices, 
stronger local currency and lower grades.

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9
.
1

0
2

.

7
.
1

5

2

5
.
1

4
.
1

2

1

0

13

14
15
Fatalities

16

17
LTIFR

2
.
1
2
7

.

8
4
0
7

.

4
9
0
7

.

3
4
0
7

.

3
0
3
6

0
5
.
1

3
4
.
1

6
3
.
1

5
2
.
1

0
2
.
1

13

14

15

16

17

13

14

15

16

17

0
Fatalities

1.4
LTIFR

704.3k tonnes

$1.25/lb

+ See page 56 for more information

+ See pages 34 to 43 for more information

+ See page 34 for more information

EBITDA*2
EBITDA of $2,587* million, 59%  
higher than in 2016 due to higher  
realised prices.

EARNINGS PER SHARE*
Earnings per share from continuing 
operations increased to 76.1 cents per share 
due to higher realised prices.

6
2
6
2

,

3
0
1
,
2

7
8
5
2

,

6
2
6
,
1

0
1
9

1
.
6
7

.

9
6
6

.

6
6
4

MINERAL RESOURCES3
Mineral resources decreased by 0.4%. 
Although new mineral resources added 
during the year offset tonnes mined, changed 
economic parameters reduced mineral 
resources overall.

.

7
8
1

.

7
8
1

.

7
8
1

.

9
7
1

.

2
6
1

13

14

15

16

17

$2,587m

* Restated for discontinued operations

.

)
5
0
(

15

1
.
2
1

16

17

13

14

76.1 cents

* Restated for discontinued operations

13

14

15

16

17

18.7bn tonnes

+ See page 48 for more information

+ See page 48 for more information

+ See page 203 for more information

1.  100% of production at Los Pelambres, Centinela and Antucoya, and 50% of Zaldívar’s production.
2.  Non IFRS measure, refer to the alternative performance measures in Note 37 to the financial statements.
3.  Mineral resources (including ore reserves) held by the Group’s subsidiaries on a 100% basis and 

at Zaldívar on a 50% basis. 

Remuneration perfomance criteria. 
See pages 113 for more information

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antofagasta.co.uk 
AT A GLANCE

OUR BUSINESS TODAY

ANTUCOYA
 − 70% owned

 − 22-year mine life

 − produces copper cathodes

CU

REVENUE

EBITDA1

11%

8%

CENTINELA
 − 70% owned

 − 50-year mine life

 − produces copper concentrates 
containing gold and silver, 
and copper cathodes

CUCU

AUAU

AG

CU

35%

33%

ZALDÍVAR
 − 50% owned (and operated)

 − 13-year mine life

 − produces copper cathodes

CU

5%

CU

AG

AU

MB

51%

55%

4%

4%

LOS PELAMBRES
 − 60% owned

 − 21-year mine life

 − produces copper concentrates 

containing gold and silver 
and a separate molybdenum 
concentrate

TRANSPORT
The transport division operates 
the main cargo transport system 
in the Antofagasta Region 
of Chile, moving goods and 
materials such as sulphuric acid 
and copper cathodes to and from 
mines by road and on its 900 km 
rail network.

Volume transported by combined 
rail and road in 2017 was 
6,268,000 tonnes.

GROUP

$4,749 m

$2,587 m

1.  Non-IFRS measure. Refer to the alternative performance measures in Note 37 to the financial statements.

KEY

CATHODES

CONCENTRATE

ROAD

RAIL

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Antofagasta plc Annual Report 2017Copper production (tonnes) 
and net cash cost1 ($/lb)

2017

2018 FORECAST

GROWTH POTENTIAL

80,500
$1.68/lb

75-80,000
$1.75/lb 

228,300
$1.36/lb

230-245,000
$1.50/lb

Centinela Expansion
Considering two alternatives:

 − Building a second concentrator, or

 − Expanding the existing concentrator

51,700
$1.62/lb

55-60,000
$1.70/lb

Mine life extension
 − Assessing viability of primary 

sulphide leaching

343,800
$1.02/lb 

345-355,000 
$1.10/lb

Los Pelambres Incremental 
Expansion
 − Phase 1 will increase 

throughput capacity to 190ktpd. 
The project is expected to be 
approved during 2018 

 − Phase 2 will further increase 

throughput capacity to 205ktpd 
and extend the life of mine

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THE BUSINESS
Mining is the Group’s core business, representing 
over 96% of Group revenue and EBITDA. The Group 
operates four copper mines in Chile, two of which 
produce significant volumes of by-products. The Group 
also has a portfolio of growth opportunities located 
mainly in Chile.

In addition to mining, the Group has a transport division 
providing rail and road cargo services in northern Chile 
predominantly to mining customers, which include 
some of the Group’s own operations.
+ See page 34 for more information

STRATEGY
1 THE EXISTING CORE BUSINESS 
The first pillar of the strategy is to optimise and 
enhance the existing core business: Los Pelambres, 
Centinela, Antucoya and Zaldívar. 

2 ORGANIC AND SUSTAINABLE GROWTH 
OF THE CORE BUSINESS 
The second pillar of the strategy is to achieve 
sustainable, organic growth by further developing the 
areas around the Group’s existing asset base in Chile. 

3 GROWTH BEYOND THE CORE BUSINESS
The third pillar of the strategy is to seek growth  
beyond the Group’s existing operations, in Chile 
or internationally, through the acquisition of 
high-quality operating assets and/or high-potential 
early-stage developments.

704,300
$1.25/lb 

705-740,000
$1.35/lb 

+ See pages 12 to 13 for more information

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antofagasta.co.uk 
LETTER FROM THE CHAIRMAN

WORKING TOGETHER 
WITH PARTNERS

“I believe that Antofagasta’s long‑term 
strategy of through‑cycle investment 
has left the Group well placed to take 
advantage of the improved outlook  
for copper.”

Jean-Paul Luksic, Chairman

DEAR SHAREHOLDERS,
Our focus over the course of recent years has been on ensuring 
the safety, sustainability, reliability and stability of our operations with 
a view to positioning Antofagasta for the anticipated recovery of the 
markets. To this end we have worked hard alongside our partners 
to maximise the sustainability and productivity of our mines, instilling 
a cost-conscious culture in our employees and maintaining our 
production volumes despite declining ore grades. At our transport 
division we are making exciting progress, revitalising our operations 
and investing in new equipment and track improvements.

These actions, when combined with the continued recovery in the 
copper price, have helped to lift the Group’s financial performance  
for the year. We have seen a marked improvement in our EBITDA 
margins since 2012 while copper production has almost been 
maintained despite a significant drop in grades at our two  
largest operations.

I believe that Antofagasta’s long-term strategy of through-cycle 
investment has left the Group well placed to take advantage of the 
improved outlook for copper. By taking a prudent approach to our 
finances throughout the cycle we have been able to invest during the 
downturn, adding additional copper-producing assets over the last  
few years as well as a range of future growth options.

PARTNERS IN PROSPERITY
We have always believed that working in partnership – whether with 
our equity partners in the mining operations, the communities that 
we work in or the local and national government – is the best way 
of working. It is good for business as well: working together to ensure 
the safety, sustainability, reliability and stability of our operations 
enables everybody to prosper.

We have worked for many years closely with Marubeni at Centinela 
and Antucoya, and alongside JX Nippon and a consortium led  
by Mitsubishi at Los Pelambres. More recently, our acquisition  
of a stake in Zaldívar brought us into a renewed partnership with 
Barrick Gold. By working with multiple partners across our assets  
we have pooled risk, diversified our portfolios and financial exposure, 
and benefited from shared expertise. I would like to thank our 
partners personally for their support over the years and, as we look  
to the future, our shared vision of what we can achieve together 
going forward.

Although we have not always got everything right, we have always 
sought to be a good neighbour to the communities we work with. 
Working with local communities for us means that we have an open 
and honest dialogue with one another, ensuring transparency and 
a recourse for settling disputes. We formalised this partnership 
approach to community relations in 2015 in a programme agreed 
with the communities, Somos Choapa, which provides the community 
at Los Pelambres with clearer oversight of our operations, and 
decision-making power over how community funds are spent. 
This programme is now being rolled out at our other operations 
and I expect that all will benefit from this.

Mining continues to fulfil a central role in the growth of Chile’s 
economy, providing jobs and infrastructure as well as regional and 
national tax revenues. The industry has benefited from the economic, 
social, political and regulatory stability of Chile and in partnership with 
local and national government we are working to ensure that Chile 
develops its remaining copper resources – some 30% of global 
reserves – for future generations and the long-term benefit of the 
country. As we have seen over the years, if the mining industry 
performs well, Chile performs well.

As testament to our approach to partnership, we enjoy good 
relations with our employees and contractors. This is borne out by 
the great strides we have made in working with the labour unions 
– at Centinela and Zaldívar in 2017 – to reach agreement on 
compensation and working conditions for the next three years. 
Providing a fair deal for all sides meant we did so without strike 
action, a record we have maintained since we first began mining 
in 1980. I value the good relations we have with our employees, 
achieved through a regular dialogue outside periods of formal 
negotiation, despite the current environment in which conflict 
in negotiations has become more common.

SAFETY
Our priority is the safety of our employees, contractors and the 
communities in which Antofagasta works. I am very pleased to say 
that in 2017 the Group achieved its target of zero fatalities and I am 
very proud of the efforts and achievements of everyone involved. 
However, while this performance is testament to the hard work and 
vigilance of our employees, there is no room for complacency and we 
continue to make every effort to raise our safety standards across all 
our operations.

4

Antofagasta plc Annual Report 2017A NEW APPROACH TO SUSTAINABILITY
In April 2017 the Board approved an updated sustainability policy. 
The policy has five areas of focus designed to place sustainability 
at the heart of everything we do and help safeguard our position 
as partner of first choice. The first area is the safety and health 
of our people. The second is to maintain and develop our model 
of sustainable value creation. The third is to contribute to the social 
development of the communities that we operate in. The fourth is to 
prevent, control and mitigate our impact on the environment and the 
fifth is to maintain and reinforce our strong corporate governance 
and to ensure transparency in everything we do.

CULTURE, DIVERSITY AND INCLUSION
In 2017 we reviewed and reconfirmed the Board’s commitment to 
the Group’s corporate values. The Group’s culture is embodied in 
these values and is demonstrated through the actions and leadership 
of the Board and senior management.

I believe that diverse and inclusive companies are better able to 
attract the best talent and to achieve stronger and more reliable 
overall performance. To this end the Board’s Remuneration and 
Talent Management Committee is overseeing our work to formalise 
our commitment to diversity and its inclusion at all levels of the Group. 
A broader diversity and inclusion programme is being rolled out 
during 2018. 

RISK MANAGEMENT
Antofagasta’s growth into one of the world’s most important copper 
producers has been driven by its entrepreneurial spirit – a spirit that 
I am proud to say remains at the core of our identity. Balancing this 
has been our focus on risk management, an area we continued to 
strengthen during the year. As of this year at least one member 
of the Audit and Risk Committee serves on each of the other Board 
Committees to enable better analysis of the Group’s risks as 
presented by management. The Committee meets annually, 
specifically to evaluating key risks and mitigation activities.

Over recent years the workload of the Board Committees has 
increased significantly as they work with management to address 
important issues that cannot be covered in sufficient detail in Board 
meetings. I would like to thank all of the Committee members for their 
efforts, time and dedication.

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OUTLOOK
One of the most exciting trends to emerge in 2017 has been the 
increased interest in new technologies, which use significantly more 
copper than established technologies. This is particularly the case in 
clean energy and electric vehicles, and a recent highlight for me has 
been our sponsorship of the FIA Formula E Championship in 
2017–2018. While undoubtedly a fantastic spectacle, the Formula E 
race in Santiago really underlined the rapid changes that are taking 
place across the world about how we respond to climate change 
– and the central role that copper is set to play.

It is important not to overstate the near-term impacts these changes 
are likely to have on copper demand. While the emergence of this new 
source of consumption is likely to provide a welcome boost to the 
medium to long-term fundamentals of our business, our traditional 
markets in China, Europe and North America will remain the most 
important drivers for copper in the shorter term.

We believe that in the near term the copper market is looking 
balanced, with the longer-term outlook broadly positive. This gives 
me confidence that the three pillars that we have built our strategy 
around are the right ones. First, we continue to focus on optimising 
our existing operations and capital expenditure programme to ensure 
our investments generate good returns. Second, we look for 
sustainable, organic growth in the areas around our operations. 
And finally, we look for special opportunities in the Americas for 
growth beyond our core business in Chile.

Much of what we have achieved over the past year has been made 
possible by the hard work of our employees and management. I would 
like to thank them all for everything they have done for the Group 
during 2017 and I look forward to working with them to take 
advantage of the many opportunities we have in the year ahead.

Jean-Paul Luksic
Chairman

OUR CORE VALUES

RESPECT

SAFETY  
AND HEALTH

INNOVATION

EXCELLENCE

SUSTAINABILITY

FORWARD 
THINKING

5

antofagasta.co.uk 
Q&A WITH THE CHIEF EXECUTIVE OFFICER

TAKING CHARGE 
OF OUR FUTURE

“My focus over the year has been on 
producing profitable tonnes by reducing 
costs, improving productivity and 
efficiency and applying innovative 
solutions to the challenges we face. ”

Iván Arriagada, CEO

Also at Centinela we completed the construction of the Molybdenum 
Plant in June, conducted pre-commissioning tests throughout the 
second half of 2017 and expect to achieve first production during 
the first half of 2018. The plant will produce an average of 2,400 
tonnes of molybdenum per year and help reduce our unit cash 
costs at Centinela.

So, two real operating milestones for Antofagasta – both of which 
demonstrate our commitment to investing through the cycle and 
which provide the Group with an excellent platform for the next stage 
of organic growth.

Turning to production, as highlighted above we achieved 704,300 
tonnes during 2017, in line with our guidance for the year and slightly 
less than last year. This was consistent with the expected declines in 
grade at Los Pelambres and Centinela, which were not fully offset 
by Encuentro Oxides and the first year of full production at Antucoya.

The stronger production performance at these mines helped 
counterbalance a drop of 3.3% in copper production at Los 
Pelambres. This was primarily due to lower ore grade and underlines 
both the importance of projects such as Encuentro Oxides being 
brought onstream and also the need to maintain our drive for further 
productivity improvements.

Beyond our core copper business, gold production was 212,400 
ounces, 21.6% lower than in 2016, which reflects lower grade 
at Los Pelambres and the shift to higher copper content ores 
at Centinela. However, our molybdenum production was boosted 
by 47.9% year on year by higher grade qualities. 

At our transport division, EBITDA contribution to the Group improved 
by 12% compared to 2016, to $98.1 million.

Q. HOW ABOUT THE GROUP’S FINANCIAL RESULTS?
Our financial performance over the course of the year has been a real 
positive for me. As I said, at the heart of our strategy is the consistent 
and sustainable production of profitable tonnes. So, while we have 
been working hard to make sure that our operations are well 
positioned for growth, we have not lost our focus on tight cost 
control. During the year we conducted reviews of our Cost and 
Competitiveness Programme (CCP) and new operating model, 
embedding them into our everyday business practices.

The lower costs we have achieved combined with improved prices 
in 2017 flowed through into stronger cash flows and much improved 
margins. Our cash flow from operations was up 71.2% in 2017 to $2.5 
billion and our EBITDA margins returned to over 50% – a real step 
change in profitability.

Q. WHAT DO YOU VIEW AS THE HIGHLIGHTS OF THE YEAR 

– FOR BOTH ANTOFAGASTA AND THE WIDER INDUSTRY?
Our most important achievement was that we had no fatalities at our 
operations – not least because this is not something that has simply 
happened overnight. When I started as CEO I found an organisation 
which had just had a few serious accidents, some of which had 
resulted in fatalities. Since then we have worked in a very deliberate 
way to bring safety to the forefront of everything we do and have 
succeeded in creating the strong safety culture that we have today. 

While this is an encouraging result, we cannot be complacent because 
mining will always be a business that faces very real risks that can 
only be managed through a resilient safety culture. I am determined 
to continue to raise safety standards and awareness across the Group 
– from the Executive Committee, which regularly visits our mining 
operations as part of our safety leadership programme, to our 
employees and contractors in the mines and the people in the 
communities that we work alongside.

My focus over the year has been on producing profitable tonnes by 
reducing costs, improving productivity and efficiency and applying 
innovative solutions to the challenges we face. One of the outcomes 
of these efforts is that we as a Group are getting much better at 
consistent and reliable delivery – something that is borne out by 
our meeting production and cost guidance for the year, producing 
704,300 tonnes of copper at a net cash cost of $1.25/lb. This 
performance has translated into an EBITDA margin of 54.5%, 
the highest margin since 2012, when the copper price was nearly 
30% higher.

Q. CAN YOU TALK US THROUGH ANTOFAGASTA’S OPERATING 

PERFORMANCE?

Let me start with a couple of operating milestones that we reached 
during the year, which underpin Antofagasta’s prospects for a 
balanced growth outlook into 2018. 

In the third quarter of 2017 we brought on stream the Encuentro 
Oxides plant at Centinela. Once running at capacity Encuentro Oxides 
will produce on average 43,000 tonnes of copper cathode per year, 
making use of the spare capacity at the SX-EW facilities at Centinela 
and helping offset natural declines in production due to falling grades. 
We expect to see the full growth benefits flow through into the 
Group’s results in 2018.

6

Antofagasta plc Annual Report 2017It is this better financial performance that has allowed the Board 
to recommend a final dividend for the year of 40.6 cents per share, 
bringing the total dividend for the year to 50.9 cents per share 
or $501.8 million. This is an increase of 176.6% on last year and 
represents a total pay out ratio of 67% of net earnings, ahead of 
the Company’s policy of paying out a minimum of 35% of underlying 
net earnings.

Q. DESPITE YOUR COST CONTROLS THE COMPANY 

IS INCREASING ITS CAPITAL INVESTMENT. WHY?

Capital expenditure for 2018 is expected to be about $1.0 billion, which 
is some $100 million higher than in 2017. This reflects the coincidence 
of each of the three categories of expenditure we have, development, 
sustaining and mine development, increasing at the same time.

Development expenditure is mainly on the Los Pelambres Incremental 
Expansion project. Now that the EIA has been approved, it will be 
presented to the Board for approval once certain additional permits 
have been received. 

On sustaining capital expenditure, we have been keeping a tight 
control on this and expect it to average about $400-450 per tonne 
of production through a multi-year period, typically over five years. 
In 2016 and 2017 it was well below this level and although it is 
increasing in 2018 to $385 million this is still within the target range 
over the cycle. 

Finally, our mine development expenditure is mainly at Centinela and 
increases slightly this year as mining moves into a new phase with 
a larger amount of waste rock to be moved.

This investment will provide growth in future years and ensure 
our operations will continue to operate reliably and that productivity 
is improved.

Q. WHAT PROGRESS HAS BEEN MADE ON THE GROUP’S 

GROWTH PROJECTS?

The EIA for Phase 1 of the Los Pelambres Incremental Expansion 
project was approved in February 2018. We have also recently 
updated the capital estimate with current pricing projections, 
advanced detailed engineering and a project execution plan to a 
revised estimate of $1.3 billion. 

This figure includes the concentrator plant expansion and pre-
stripping at $780 million and the desalination plant and water pipeline 
at $520 million. The desalination plant will serve as a back-up water 
supply for the entire operation – existing plus both phases of 
expansion – in conditions of severe drought. 

The project is expected to be submitted for approval to the Board 
during the second half of 2018 once ancillary permits to the approved 
EIA are in place and additional geotechnical studies at the desalination 
plant have been completed.

The project will increase Los Pelambres’ production by 55,000 
tonnes of copper a year from 2021. Phase 2 will require further 
permitting and will add another 35,000 tonnes of production and 
extend the mine life by 15 years. 

We also have the opportunity to expand production at Centinela and 
we are considering two alternatives. One is to build a new second 
concentrator at an estimated cost of $2.7 billion and producing 
some 180,000 tonnes of copper equivalent per year. The other is 
to expand the existing concentrator. We have conducted preliminary 
work on a second option that has lower capital expenditure and 
lower construction and project execution risks than the Second 
Concentrator project. We will be doing more work on both options 
during 2018 with the intention of being in a position to select our 
preferred alternative by the end of the year. If the alternative to 
expand the existing concentrator is selected then a full feasibility study 
will need to be done before the Board decides on whether to approve 
it for construction. The feasibility study will take about 18 months.

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Q. LABOUR AND COMMUNITY RELATIONS HAVE BEEN AN ISSUE 
FOR THE CHILEAN COPPER INDUSTRY IN RECENT YEARS. HOW 
DO YOU APPROACH IT?

Well, it can be a challenging issue for everybody concerned and is 
something I and my team spend a lot of time on. I am pleased that 
over the last few years we have been able to reset the relationships 
we have with our labour force and communities. During 2017 we 
successfully concluded pay agreements for the next three years with 
the unions at Centinela and Zaldívar. We’ve also made progress in 
strengthening our community relations – formalising our partnership 
with the Choapa Valley community through Somos Choapa.

It is my view we work best when we work in partnership, and the first 
step to success is mutual understanding. So, when I sit down with our 
employees, our contractors and with the communities that we work in 
I always want to begin by understanding their viewpoint. We may not 
always agree but over the years we have demonstrated that reaching 
agreement – through constructive conversation – helps secure jobs 
and prosperity for all of our stakeholders.

Over the last few years we have made excellent progress at Los 
Pelambres, resolving the legal challenges that have hung over the 
operation for some time. Going forward, Los Pelambres can enjoy  
the lack of distraction caused by these cases and the more rewarding 
interaction with the communities in the areas in which it has an 
impact. We are rolling out this community engagement model to our 
other operations, and we expect to improve the interaction we have 
there as well.

Q. LOOKING AHEAD INTO 2018 AND BEYOND WHAT DO YOU 

SEE FOR ANTOFAGASTA AND THE MARKET?

2017 was a good year for copper, with a strong rally in the price 
driven by a pick-up in demand – mostly in Asia but also, as the 
Chairman mentions in his letter, from potential new sources in the 
shape of electric vehicles and clean energy. It is my belief that the 
price will stabilise at current levels over the next couple of years, 
partly sustained by demand but also due to a tightening supply 
position going into 2019.

This is when you will see the benefit of our investment during the 
downturn in the copper price over the last few years, when we 
continued with the construction of Antucoya and the expansion of 
Centinela, and took the opportunity of acquiring 50% of Zaldívar.  
We were able to do this because of the strength of our balance  
sheet and our conviction that in the medium to long term the copper 
price would recover. Now these additional tonnes of copper 
production will contribute strongly to the Group’s results and these 
assets will act as the basis for further growth in the future.

I believe that we are in a good position to benefit from this improving 
environment. We are forecasting production for 2018 of 705-740,000 
tonnes of copper as Encuentro Oxides ramps up. We have taken 
$525 million of costs out of the business since 2014, including 
$166 million in 2017, and a further $100 million have been identified 
for 2018. Combined with a prudent approach to our balance sheet, 
tight cost control and improved prices have boosted our operating 
margins and provided us with the flexibility to take full advantage 
of future organic growth opportunities, while safeguarding returns 
for our shareholders.

We have made great progress over the last few years in improving 
the resilience and efficiency of our operations and this is reflected 
in our adherence to guidance. This would not have been possible 
without the support and hard work of our stakeholders – our 
employees, contractors, shareholders, communities and state and 
national governments. I would like to thank all of them.

I am excited about what we can achieve together over the next 
few years.

Iván Arriagada
Chief Executive Officer

7

antofagasta.co.uk 
THE COPPER MARKET

THE IMPORTANCE  
OF COPPER

Expanding infrastructure and changes in technology, innovation and demographics have 
brought global demand for copper to the highest level it has ever been and it is expected 
to continue to grow steadily. 

COPPER’S ROLE IN THE MODERN WORLD
Copper has for centuries played a central role in humankind’s 
development, from the earliest civilisations to the modern world. Its 
versatile properties – high thermal and electrical conductivity, ductility, 
malleability and corrosion resistance – have made it a key industrial 
metal. Today, copper plays an important role in power generation and 
transmission, electric motors and consumer goods such as electronic 
devices, air conditioning units and refrigerators. 

The global trend towards urbanisation has seen a rapid increase 
in demand for the metal over the last decade, as new houses are 
constructed, networks for electricity distribution are built and 
telecommunications infrastructure is put in place. At the same time 
rising wealth in the developing world is driving demand for vehicles, 
electronic devices and other consumer goods.

As the world looks to new clean energy technologies to provide a 
greener and more sustainable future, copper remains centre stage. 
From solar photovoltaic energy systems and wind turbines to electric 
vehicles and battery storage, the properties of copper have proven 
once again to be integral and ensure that it will continue to play a vital 
role in green energy systems for years to come.

Finally, copper is easy to recycle, with copper produced from scrap 
requiring 85–90% less energy than copper produced from ore. 
This ease of recycling in turn improves the reycling credentials 
of products and applications that use copper.

8

Antofagasta plc Annual Report 2017MEETING THE WORLD’S DEMANDS
Copper is integral in the growth of clean, renewable energy systems and electric vehicles and also benefits from rising urbanisation 
and growing wealth across the globe.

I

S
T
R
A
T
E
G
C
R
E
P
O
R
T

CLEAN AND RENEWABLE ENERGY
One of the United Nations Millennium Development 
Goals is to ensure environmental sustainability. 
The generation of power from renewable sources 
is a contributor to the achievement of this goal, 
and global demand for clean and renewable energy 
is growing fast.

COPPER’S CONTRIBUTION
 − Electricity generated from solar or wind, 
together with the electricity distribution 
systems required, are more copper 
intensive than using conventional 
technologies.

ELECTRIC VEHICLES
Not many years ago electric vehicles were 
regarded as a novelty rather than a mainstream 
mode of transport. Now innovation is making them 
a reality with far more efficient engines and 
batteries and costs being driven down all the time. 
Today car manufacturers are making significant 
progress on e-mobility. Furthermore, some 
countries have announced they will forbid the 
selling of new cars with conventional engines 
within the next few decades. 

Studies commissioned by the International Copper 
Association (ICA) estimate that by 2027 some 27 
million electric vehicles will be produced each year 
– up from an estimated three million in 2017. 

This is good news for the environment as well 
as for copper, one of the key metals required for 
this emerging trend. This is also one of the reasons 
the Group is sponsoring the Formula E race 
in Santiago, which raises awareness of the 
capabilities of electric vehicles.

URBANISATION
Rising urbanisation and growing wealth across 
the globe is driving up copper consumption in key 
markets, especially in China, where almost half 
of the world’s copper is consumed. The migration 
of people from the countryside to cities increases 
the need for more and better infrastructure, from 
houses to electrical networks infrastructure and 
public transportation. 

COPPER’S CONTRIBUTION
 − Copper is used in the batteries, windings 

and copper rotors found in electric 
motors, wiring and busbars, as well 
as in EV charging infrastructure. 

 − An electric vehicle requires on average 
80-85 kg of copper, compared with 
20-25 kg in a vehicle powered by 
an internal combustion engine (ICE). 

 − By 2027 annual copper demand from 

the electric vehicles industry is estimated 
to be approximately 1.7 million tonnes, 
compared to 185,000 tonnes in 2017.

COPPER’S CONTRIBUTION
 − It is difficult to quantify the consumption 
of copper arising from urbanisation 
alone, but globally some 31% of copper 
is consumed in construction, 24% in 
electrical networks and 11% in transport. 
There is a correlation between GDP per 
capita and the demand for metals, such 
as copper, that are necessary to build 
infrastructure and are used in consumer 
products. Therefore as developing 
countries and middle-class populations 
grow, more copper will be consumed.

 − The Group believes copper is a key 

contributor to sustainable development.

9

antofagasta.co.ukSTRATEGIC REPORT 
THE COPPER MARKET CONTINUED

RESPONDING TO A 
CHANGING WORLD

As the world develops and transforms, the demand for copper increases. The Group 
is responding by supplying the copper needed for a more sustainable world.

GLOBAL COPPER SUPPLY AND DEMAND (‘000 TONNES)

40,000

35,000

30,000

25,000

20,000

15,000

10,000

5,000

0

1996

2001

2006

2011

2016

2021

2026

Primary demand

Base case production capability

Probable projects

Possible projects

Source: Wood Mackenzie Q4 2017
Copper Outlook – December 2017

COPPER DEMAND BY SECTOR

10%

31%

Construction

Electrical network

Consumer and general

Transport

Industrial machinery

11%

24%

24%

Source: Wood Mackenzie Q4 2017
Copper Outlook – December 2017

10

Antofagasta plc Annual Report 2017MARKET ENVIRONMENT
Copper supply came under pressure during the first half of the year as strikes and other issues at some of the world’s largest mines led 
to significant disruptions. In the second half of the year demand was supported by unexpected strength in key markets, particularly in China.

REFINED COPPER

2017 MARKET PERFORMANCE
The LME copper price at the beginning of 2017 was $2.51/lb and 
rose to end the year at $3.27/lb, averaging $2.80/lb over the 
whole year, an increase of 27% compared with 2016. Copper 
supply came under pressure during the first half of the year 
as strikes and other issues at some of the world’s largest mines 
led to significant disruptions. Additionally, in the second half of the 
year demand was supported by unexpected strength in key 
markets, particularly in China.

Global mine production accounts for some 87% of total refined 
supply and is estimated to have fallen by 1.5% during 2017, with 
labour and other disruptions offsetting new production coming 
mainly from Peru. Secondary supply from scrap increased as 
rising prices led to scrap dealers increasing their activity levels 
following subdued activity in 2015 and 2016. However, scrap 
consumption is now coming under pressure in China as the 
country enacts environmentally-friendly legislation restricting the 
import of “dirty” lower-grade scrap.

On the demand side, the most important market is China, 
which accounted for approximately 46% of global copper 
consumption in 2017, significantly more than Europe and North 
America combined, which consumed 18% and 7% respectively. 
An estimated 15-25% of Chinese consumption is re-exported 
as manufactured products.

The Group’s average realised price in 2017 was 7% above the 
average LME price, reflecting a net positive provisional pricing 
adjustment at the end of the year of $309 million.

MARKET OUTLOOK
The consensus is that the market will be balanced or show a 
small surplus in 2018, although it is expected to be much tighter in 
the second half of the year. From 2019 many industry participants 
expect the market to be in balance or even deficit as mine supply 
continues to be affected by the long-term trend of grade decline 
and lack of new investment. Considering the lead time between 
the decision to proceed with the construction of a reasonable-
sized mining operation and it coming into production, the few 
projects that have been approved or are awaiting the final stages 
of permitting are only expected to come on stream in the 
next decade.

On the demand side, growth will continue to be driven by 
Chinese consumption, but the rise in demand from electric 
vehicles and renewables will be significant if they develop at 
the rates many analysts are expecting. In addition, there are 
an unusually large number of labour negotiations taking place in 
Chile and Peru during 2018. With the backdrop of stronger copper 
prices, employee expectations are raised and this may result 
in some supply disruptions.

COPPER CONCENTRATE
Some 70% of the Group’s copper production is in the form of 
copper concentrates, so the dynamics of the concentrate market 
are important and affect the level of treatment and refining 
charges (“TC/RCs”) paid by the Group. These account for some 
15% of the Group’s cash costs.

2017 MARKET PERFORMANCE
An increasing proportion of new copper production in the world 
is in concentrates, which has been absorbed by the new smelter 
capacity built in China. There was therefore surplus smelter 
capacity in 2017 and spot TC/RCs traded below the benchmark 
price set for annual contracts.

MARKET OUTLOOK
Further increases in smelter capacity are expected in 2018, 
while growth in concentrate production will be limited, leading to 
declining TC/RCs. The annual terms for 2018 have been agreed 
at levels close to $80 per dry tonne of concentrate and 8c/lb 
of refined copper, well below the levels agreed for 2017.

GOLD
The gold price during 2017 increased by more than 13%, peaking 
in September at $1,348/oz. Macroeconomic events such as 
geopolitical tensions in south-east Asia and rising interest rates 
in the US and Europe all impacted on the price of gold, which 
is considered a safe-haven investment.

Gold averaged $1,258/oz in 2017 compared with $1,248/oz in 
2016 and closed the year at $1,303/oz. At the beginning of 2018 
the consensus price forecast for the year was slightly under 
$1,300/oz.

MOLYBDENUM
Molybdenum prices continued to perform strongly in 2017 
on increased demand from the steel industry. The price averaged 
$8.1/lb for the year compared with $6.5/lb in 2016, and the 
consensus price for 2018 at the beginning of the year was 
about $8.5/lb.

11

antofagasta.co.ukSTRATEGIC REPORTSTRATEGY

STRATEGY

OUR VISION
To be an international mining company based 
in Chile, focused on copper and related by‑
products, recognised for operating efficiency, 
for value creation and as a preferred partner 
in the global mining industry.

T

H

E C

ORE BU S I N ESS

GROWTH OF T H E   C

O

E

R

GROWTH BEYOND   T H E   C O

E

R

1 THE EXISTING CORE BUSINESS
The first pillar of the strategy is to optimise and enhance the existing core business: 
Los Pelambres, Centinela, Antucoya and Zaldívar.

CURRENT STRATEGIC FOCUS:
 − Further embed the Safety Model 
across all operations to continue 
to achieve zero fatalities each year.

2017 IN REVIEW
As a result of the consolidation 
of the Safety Model, the Group had 
zero fatalities.

 − Continue the Cost and 

Competitiveness Programme 
(CCP) to sustain the Group’s 
competitive position.

 − Seek long-term productivity 
improvements through the 
development and application 
of innovative solutions.

 − Embed the New Operating Model to 
realise its full potential and benefits.

 − Promote a culture which focuses 

on diversity and inclusion.

 − Continue to cultivate a proactive 
and inclusive approach to local 
communities and other stakeholders 
in order to strengthen sustainable 
development.

Copper production of 704,300 tonnes, 
representing a 0.7% decrease 
compared to 2016.

Group net cash costs of 1.25/lb, lower 
than the initial guidance for the year.

CCP achieved $166 million of mine cost 
savings, in line with target.

Corporate values reinforced and new 
Diversity and Inclusion Policy approved 
by Board.

Labour agreements reached at Centinela 
and Zaldívar.

OBJECTIVES FOR 2018
Maintain zero fatalities by continuing 
to embed the Safety Model.

Special focus on health standards. 

Copper production of 705-740,000 
tonnes.

Group cash costs before by-product 
credits of $1.65/lb, higher than 2017 
due mainly to lower grades at Centinela.

Sustain cost discipline achieved through 
the CCP, with special focus on energy 
efficiency and process productivity 
delivered by the New Operating Model 
initiatives. 

Ensure New Operating Model delivers 
the expected benefits to operations 
and releases spare capacity. 

Implement the Diversity and 
Inclusion Policy.

Maintain healthy relationships with 
communities and local stakeholders. 

12

Antofagasta plc Annual Report 20172 ORGANIC AND SUSTAINABLE GROWTH OF THE CORE BUSINESS
The second pillar of the strategy is to achieve sustainable, organic growth by further 
developing the areas around the Group’s existing asset base in Chile.

CURRENT STRATEGIC FOCUS:
 − Obtain permits to begin construction 

of Los Pelambres Incremental 
Expansion Phase I.

 − Select preferred Centinela expansion 

alternative.

OBJECTIVES FOR 2018
Encuentro Oxides to reach design 
capacity in the first half of the year.

Molybdenum plant to start production 
in the first half of the year.

Los Pelambres EIA approval (achieved 
February 2018).

Update capital estimate, complete 
additional geotechnical studies and 
obtain Board approval to proceed with 
Incremental Expansion.

Decision on whether to expand existing 
Centinela concentrator or build Second 
Concentrator.

Advance innovation programme to 
assess value-capturing technologies.

2017 IN REVIEW
Encuentro Oxides completed and 
ramping up to full production.

Molybdenum plant commissioned. 

Environmental Impact Assessment 
(EIA) of Los Pelambres Incremental 
Expansion Phase I awaiting final 
approval by the environmental 
authorities. Detailed engineering 
of the project commenced.

Reviewed options to reduce capital 
cost of Centinela Second Concentrator 
project and maximise synergies with 
existing operation.

Completed scoping study on the 
expansion of the existing concentrator 
at Centinela as an alternative to the 
Second Concentrator.

Completed Los Pelambres Incremental 
Expansion Phase II environmental 
baseline study and advanced 
feasibility study.

3 GROWTH BEYOND THE CORE BUSINESS
The third pillar of the strategy is to seek growth beyond the Group’s existing 
operations, in Chile or internationally, through the acquisition of high‑quality operating 
assets and/or high‑potential early‑stage developments.

CURRENT STRATEGIC FOCUS:
 − Advance the Twin Metals project.

 − Develop the long-term growth 
pipeline beyond the Group’s 
existing operations.

 − Continue the exploration programme 
focused on the Americas in order 
to identify long-term growth options.

 − Monitor the current market to assess 

potential accretive acquisitions 
or joint ventures.

2017 IN REVIEW
Focused exploration programme, mainly 
on targets in Americas.

OBJECTIVES FOR 2018
Continue monitoring the market for 
potential acquisition opportunities.

Commenced preparation of Twin Metals’ 
Mine Plan of Operations.

Advance exploration programmes 
in Americas.

Twin Metals’ right to renew two federal 
mineral leases was reaffirmed by the 
US Department of the Interior.

Complete revised Twin Metals project 
pre-feasibility study.

13

antofagasta.co.ukSTRATEGIC REPORTKEY PERFORMANCE INDICATORS

MEASURING OUR 
PERFORMANCE

The Group uses Key Performance Indicators (KPIs) to assess performance 
in terms of meeting its strategic and operating objectives.

Performance is measured against the following financial, operating and 
sustainability objectives:

FINANCIAL KPIs

EBITDA*

EARNINGS PER SHARE*

NET CASH/(DEBT)1

WHY IT IS IMPORTANT
This is a measure of the Group’s 
underlying profitability.

PERFORMANCE IN 2017
EBITDA rose in 2017, mainly as a result 
of higher realised prices. 

WHY IT IS IMPORTANT
This is a measure of the profit attributable 
to shareholders.

WHY IT IS IMPORTANT
This is a measure of the financial position of 
the Group.

PERFORMANCE IN 2017
EPS rose due to higher realised prices.

PERFORMANCE IN 2017
Net debt fell by $616 million in 2017 
to $457 million.

,

6
2
6
32
0
1
,
2

7
8
5
2

,

6
2
6
,
1

0
1
9

13

14

15

16

17

$2,587m

1
.
6
7

1
1
3
,
1

.

9
6
6

.

6
6
4

.

)
5
0
(

15

1
.
2
1

16

17

13

14

76.1 cents

)
2
)(
4
2
0
,
1
(

)
2
7
0
,
1
(

)
7
5
4
(

13

14

15

16

17

$(457)m

*Restated for discontinued operations

*Restated for discontinued operations

+ See page 48 for more information

+ See page 52 for more information

+ See page 53 for more information

Remuneration perfomance criteria. 
See page 113 for more information

Footnotes:
1.  Non-IFRS measures refers to the alternative performance measures in Note 37 to the financial statements.
2.  100% of production at Los Pelambres, Centinela and Antucoya, and 50% of Zaldívar’s production.
3.  Mineral resources (including ore reserves) relating to the Group’s subsidiaries on a 100% basis and Zaldívar on a 50% basis.
4.  The Lost Time Injury Frequency Rate is the number of accidents with lost time during the year per million hours worked.
5.  Relates to the mining division only.

14

Antofagasta plc Annual Report 2017OPERATING KPIs

COPPER  
PRODUCTION2

NET CASH  
COSTS1

MINERAL  
RESOURCES3

WHY IT IS IMPORTANT 
Copper is the Group’s main product and its 
production is a key operating parameter. 

WHY IT IS IMPORTANT 
This is a key indicator of operating efficiency 
and profitability.

PERFORMANCE IN 2017
Copper production of 704,300 tonnes, 
a 0.7% decrease on 2016 on lower grades 
at Los Pelambres offset by Encuentro Oxides 
and full year of production at Antucoya.

PERFORMANCE IN 2017
Net cash costs increased 4.2% compared to 
2016, reflecting higher input prices, stronger 
local currency and lower grades.

2
.
1
2
7

.

8
4
0
7

.

4
9
0
7

.

3
4
0
7

.

3
0
3
6

0
5
.
1

3
4
.
1

6
3
.
1

5
2
.
1

0
2
.
1

WHY IT IS IMPORTANT
Expansion of the Group’s mineral 
resources base supports its strong organic 
growth pipeline.

PERFORMANCE IN 2017
Mineral resources decreased by 0.4%. 
Although new mineral resources added 
during the year offset tonnes mined, changed 
economic parameters reduced mineral 
resources overall.

.

7
8
1

.

7
8
1

.

7
8
1

.

9
7
1

.

2
6
1

13

14

15

16

17

13

14

15

16

17

13

14

15

16

17

704.3k tonnes
+ See page 34 for more information

$1.25/lb
+ See page 34 for more information

18.7bn tonnes
+ See page 203 for more information

SUSTAINABILITY KPIs

FATALITIES AND LOST TIME 
INJURY FREQUENCY RATE4

WATER  
CONSUMPTION5

WHY THEY ARE IMPORTANT
Safety is a key priority for the Group with 
fatalities and the LTIFR being two of the 
principal measures of performance.

PERFORMANCE IN 2017
Zero fatalities and the Lost Time Injury 
Frequency Rate of the Group reduced 
to 1.4 accidents with lost time per million 
hours worked. 

WHY IT IS IMPORTANT
Water is a precious resource and the Group 
is focused on using the most sustainable 
sources and maximising its efficient use. 

PERFORMANCE IN 2017
Consumption of water increased during 
2017, mainly after the commissioning of the 
Encuentro Oxides project and the adoption 
of ICMM’s new water reporting guidelines.

CO2 EMISSIONS5 
WHY IT IS IMPORTANT
The Group recognises the risks and 
opportunities of climate change and the need 
to measure and mitigate its greenhouse gas 
(“GHG”) emissions.

PERFORMANCE IN 2017
Carbon emission intensity increased from 
2016 primarily due to Antucoya operating 
at full production for the whole year, the 
commissioning of Encuentro Oxides and 
the slight decrease in total production.

7
8
3

.

7
6
3

.

9
0
3

.

8
9
2

.

4
2
3

.

.

9
71
.
1

0
2

.

5
.
1

4
.
1

5

2

1

13

14
15
Fatalities

2

16

0
17
LTIFR

0
Fatalities

1.4
LTIFR

.

5
6
6 3
9
2

.

.

2
9
2

.

5
6
2

.

4
4
2

.

2
0
2

.

8
6
2

.

7
4
2

.

6
0
2

.

6
0
2

13

14

15

16

17

Continental water

Sea water

65.7mm3

13

14

15

16

17

3.87 per tonne
of Cu produced

+ See page 56 for more information

+ See page 62 for more information

+ See page 64 for more information

15

antofagasta.co.ukSTRATEGIC REPORTRISK MANAGEMENT FRAMEWORK

RISK AND COMPLIANCE 
MANAGEMENT 
FRAMEWORK

Effective risk and compliance management is essential to the Group’s operations and 
strategy. The accurate and timely identification, assessment and management of risks 
are key to achieving the Group’s operating and financial targets.

THE RISK AND COMPLIANCE MANAGEMENT DEPARTMENT:

Provides guidelines, standards and best-practice 
examples of risk and compliance management 
at the corporate and business unit levels

Responsible for the risk and compliance 
management systems

Maintains the Group’s risk register

Organises and promotes risk and compliance 
workshops

Supervises the operations’ risk management

Reviews the effectiveness of mitigating actions

Supports internal stakeholders in key strategic 
decisions

Ensures there are policies, guidelines and 
procedures in place to support the effectiveness 
of the Group’s internal controls

INTERNAL CONTROL
 − Conducting preventative analysis of roles 
and profiles to strengthen transaction 
risk management.

 − Ensuring SAP transactions are in full 
compliance with delegated authority 
structures. 

 − Ensuring that key in-built SAP automatic 
controls are appropriate and effective.
+ Further information about the Group’s 
risk management systems is given in 
the Governance section on pages 90 to 95 
and in the Sustainability Report on page 65. 
Further detailed disclosures in respect of 
financial risks relevant to the Group are set 
out in Note 24 to the financial statements

AREAS OF FOCUS AND DEVELOPMENT DURING 2017

RISK
The focus was on the continued 
consolidation of risk, compliance and 
internal control management processes, 
which included the following:

 − Independent review of the Group’s risk 

appetite and tolerance to risk.

 − Working to achieve a higher maturity 
level in risk management based on an 
independent review and embedding 
a risk management culture in the 
organisation as a key element in the 
decision-making process. 

 − Expanding risk analysis to routine 
corporate actions of the Company, 
including comprehensive risk 
assessment of all matters presented 
to the Board for approval.

 − Implementing effectiveness audits and 
self-assessments for risk owners, and 
verifying the design and effectiveness of 
key controls through onsite independent 
peer reviews.

 − Setting up a key risk indicators 

dashboard to provide early warning 
of increasing risks.

COMPLIANCE
 − Expanding compliance training to 

all employees on the Code of Ethics, 
anti-corruption, antitrust, the Modern 
Slavery Act, etc, through e-learning. 

 − Including the Modern Slavery Act as part 
of the Compliance Model. Reviewing all 
of the Group’s suppliers to ensure that 
modern slavery is not occurring in their 
businesses or supply chains.

 − Updating due diligence assessments 
of suppliers and business partners 
to include modern slavery-related 
verifications.

 − Obtaining the certification of the Group’s 
Crime Prevention Model for the third 
consecutive year.

 − Recognised as one of the top three 
companies in Chile in managing an 
ethical and compliant internal culture 
and receiving the “Commitment with 
Integrity” award in Chile. The recognition 
encompasses the prevention and 
detection of unethical treatment, 
promoting best business practices and 
consolidating an organisational culture 
based on the relevance of people’s 
dignity and a sense of common welfare.

16

Antofagasta plc Annual Report 2017The Group’s risk and compliance management framework comprises:

GOVERNANCE
Communicating the Group’s vision, 
strategy and objectives throughout  
the organisation, and putting in place 
appropriate governance structures,  
policies and procedures to embed 
the key aims and objectives.

RISK MANAGEMENT
Ensuring that there are structures 
and processes in place to identify and 
evaluate risks, and developing appropriate 
controls and mitigation techniques 
to address those risks.

Ensuring that key risks, and performance 
in managing those risks, are reported on 
a timely basis to the relevant parties.

COMPLIANCE
Ensuring that the Group  
adheres to internal policies,  
procedures and controls, as well as 
all relevant laws and regulations.

GOVERNANCE

The Board is responsible for determining 
the nature and extent of the significant 
risks that the Group will accept in order 
to achieve its strategic objectives, and for 
maintaining sound risk management and 
internal control systems. During the year 
an externally-facilitated review of the 
Group’s risk appetite was started and will 
be completed in 2018.

The Board receives detailed analysis of 
key matters for consideration in advance 
of Board meetings. This includes reports 
on the Group’s operating performance, 
including safety and health, financial, 
environmental, legal and social matters, key 
developments in the Group’s exploration, 
project and business development 
activities, information on the commodity 
markets, updates on talent management 
and analysis of financial investments.

The provision of this information allows 
the early identification of potential issues 
and assessment of any necessary 
mitigating actions.

The Audit and Risk Committee assists the 
Board by reviewing the effectiveness of the 
risk management process and monitoring 
key risks and mitigation procedures. 
The Chairman of the Committee reports 
to the Board following each Committee 
meeting and, if necessary, the Board can 
discuss the matters raised in more detail.

These processes allow the Board to 
monitor effectively the Group’s major risks 
and mitigation procedures, and to assess 
the acceptable level of risk arising from 
the Group’s operations and development 
activities. Risk management reports are 
sent to the Board quarterly.

The Code of Ethics sets out the Group’s 
commitment to undertaking business 
in a responsible and transparent manner. 
The Code requires honesty, integrity and 
accountability from all employees and 
contractors and includes guidelines for 
identifying and managing potential conflicts 
of interest. An Ethics Committee comprising 
members of senior management 
implements, develops and updates the Code 
and monitors compliance. The Code and 
other compliance matters form part of the 
induction programme for all new employees.
+ Further information on the Board and its 
Committees is given in the Governance  
section on pages 84 to 104

RISK MANAGEMENT

The Risk and Compliance Management 
Department is responsible for risk and 
compliance management systems across 
the Group. It maintains the Group’s risk 
register, which specifies the strategic risks 
that represent the most significant threats 
to the Group’s performance and 
achievement of its strategy, along with any 
necessary mitigation activities. The risk 
register is regularly updated and annual 
strategic risk workshops are held at which 
senior management from across the Group 
review the Group’s key strategic risks and 
related mitigation activities.

The Risk and Compliance Management 
Department reports quarterly to the Audit 
and Risk Committee on the overall risk 
management process, giving a detailed 
update of key risks, mitigation activities 
and actions being taken.

The General Managers of each of the 
operations have overall responsibility for 
leading and supporting risk management. 
Risk owners within each operation 
have direct responsibility for the risk 
management processes in their operations 
and for the continuous updating of 
individual business risk registers, including 
relevant mitigation activities. The owners of 
the risks and controls at each business unit 
are identified, providing effective and direct 
management of risk. Each operation holds 
its own annual risk workshop in which the 
business unit’s risks and mitigation 
activities are reviewed in detail and 
updated if necessary. Workshops are also 
used to assess key risks that may affect 
relationships with stakeholders, limit 
resources, interrupt operations and/or 
negatively affect potential future growth.

Mitigation techniques for significant 
strategic and business unit risks are 
annually reviewed by the Risk and 
Compliance Management Department.

The Board regularly reviews Group 
compliance with all relevant laws and 
regulations, internal policies, procedures 
and control activities. A formal risk 
assessment is conducted at least once a 
year at all the Group’s operations, and all 
risks are reported and reviewed quarterly 
by the Audit and Risk Committee. 

As the Group has no operations or material 
exposure to the UK, Brexit is not expected 
to have any appreciable impact on the 
Group. This position is kept under review 
as Brexit negotiations advance.

17

antofagasta.co.ukSTRATEGIC REPORT 
 
 
 
 
 
RISK MANAGEMENT FRAMEWORK CONTINUED

COMPLIANCE
The Group’s Compliance Model applies 
to both employees and contractors. 
It is clearly defined and is communicated 
regularly through internal communication 
channels, as well as being available on 
the Group’s website. All contracts with 
contractors include clauses relating 
to ethics, modern slavery and crime 
prevention to ensure adherence to 
the Group’s Compliance Model.

The Compliance Model comprises  
five pillars:

1  CODE OF ETHICS
The Code of Ethics sets out the Group’s 
values and provides guidelines on the 
behaviour required of all employees 
and contractors.

 − Conflict of Interest Guidelines

 − Gifts and Hospitality Guidelines

 − Modern Slavery Act

 −  Monitoring the effectiveness 

of the programme

 − Annual Statement
+ Please see our Modern Slavery  

Statement on page 65

2  CRIME PREVENTION MODEL
The Crime Prevention Model ensures 
compliance with the anti-bribery and 
anti-corruption laws in the United Kingdom 
and Chile. The Vice President of Finance 
and Administration is responsible for 
overseeing, defining and implementing 
the Model. As part of the Model, the 
Group regularly undertakes the 
following activities: 

 − Training on key risk areas (ethics, 

anti-corruption, modern slavery and 
antitrust matters)

 − Investigating all reports made 

 − Methodology for complaints investigation 

by whistleblowers

and reporting

 − Assessing conflict of interest and due 
diligence on all business partners 

 − Monitoring – analysis of complaints 
and improvements to internal control

 − Updating and reviewing all employees’ 

conflict of interest statements

 − Strengthening the compliance 

programme and systems

 − Overseeing third-party reviews of the 

Crime Prevention Model 

 − Implementing policies and processes to 
ensure the proper management of any 
non-compliance exposure

 − Crime Prevention Handbook

 − Anti-corruption clauses in contracts

 − Due diligence process, including global 

checking

 − Antitrust – Politically Exposed Person 
(PEP) Facilitation Fees Guidelines
+ See page 23 for more information 

on corruption prevention and mitigation 
activities

4  COMPLIANCE RISKS AND  
CONTROL ASSESSMENT 
The objective of the Compliance Risks and 
Control Assessment is to identify, develop 
and improve internal controls to prevent 
and mitigate potential risks. This 
assessment is performed at least annually.

 − Identification of risks and controls

 − Assessment of risks and controls, 
and improvement of the process

 − The Compliance Model is reviewed 

regularly, both internally and by third 
parties, and on matters relating to 
corruption it has been certified under 
Chilean anti-corruption legislation
+ See page 65 for more information

3  WHISTLEBLOWING
Employees and external stakeholders can 
report concerns about irregular conduct 
or ethical issues through the Company’s 
intranet, by email, or letter, or by using 
a dedicated hotline. All complaints are 
investigated and the findings are reported 
to the Ethics Committee and action is taken 
if required. The security and confidentiality 
of employees is ensured for the duration 
of the process, safeguarding individuals 
and thereby achieving greater transparency.

5  COMMUNICATION AND  
TRAINING PROGRAMME
The Group has a comprehensive training 
programme to ensure that the policies and 
procedures of the Compliance Model are 
clearly understood and embedded in the 
culture of the organisation. The programme 
emphasises the right to know, and there 
are measures in place to enhance the skills 
required to ensure its effective 
implementation. 

 − Communications (news, intranet, 

 − Reporting channels (web, telephone, 

posters)

hotline, email)

 − Training programme – induction of new 

employees and e-learning

VIABILITY STATEMENT
To address the requirements of provision C.2.2 of the 2014 UK 
Corporate Governance Code, the Directors have assessed the 
prospects of the Group over a period of five years.

Mining is a long-term business and timescales can run into decades. 
The Group maintains life-of-mine plans covering the full remaining 
mine life for each of the mining operations. More detailed medium-
term planning is performed for a five-year time horizon (as well as 
very detailed annual budgets). Accordingly, a period of five years has 
been selected as the appropriate period over which to assess the 
prospects of the Group.

When taking account of the impact of the Group’s current position on 
this viability assessment, the Directors have considered in particular 
its financial position, including its significant balance of cash, cash 
equivalents and liquid investments and the borrowing facilities in 
place, including their terms and remaining durations.

When assessing the prospects of the Group, the Directors have 
considered the Group’s copper price forecasts, the Group’s expected 
production levels, operating cost profile, capital expenditure and 
financing plans. The Directors have taken into consideration the 

principal risks which could impact the prospects of the Group over 
this period, and consider the most relevant to be risks to the copper 
price outlook. Robust down-side sensitivity analyses have been 
performed, assessing the impact of a significant deterioration in the 
copper price outlook over the five-year period, along with the impact 
of the potential occurrence of a number of the Group’s other specific 
principal risks. This analysis has focused on the existing asset base 
of the Group, without factoring in potential development projects, 
which is considered appropriate for an assessment of the Group’s 
ability to manage the impact of a depressed economic environment. 
These stress-tests all indicated results which could be managed 
in the normal course of business. 

Based on their assessment of the Group’s prospects and viability, 
the Directors confirm that they have a reasonable expectation that 
the Group will be able to continue in operation and meet its liabilities 
as they fall due over the next five years.

GOING CONCERN
Based on the factors considered above, the Directors also considered 
it appropriate to prepare the financial statements on the going 
concern basis.

18

Antofagasta plc Annual Report 2017PRINCIPAL RISKS

The Board has carried out a robust assessment of its principal risks, which are set out 
below, together with the related mitigation techniques.

FINANCIAL RISKS

2
3

GROWTH OPPORTUNITIES
The Group may fail to identify attractive acquisition 
opportunities or may select inappropriate targets.

The long-term commodity price forecast and other 
assumptions used when assessing potential projects 
and other investment opportunities have a significant 
influence on the forecast return on investment and, 
if incorrectly estimated, could result in poor decisions.

MITIGATION
The Group assesses a wide range of potential growth opportunities, both internal projects 
and external opportunities. A rigorous assessment process is followed to evaluate all potential 
business acquisitions, which are subjected to different stress-test scenarios for sensitivity 
analysis, and to determine the risks associated with the project or opportunity.

The Group’s Business Development Committee reviews potential growth opportunities and 
transactions, and approves or recommends them within authority levels set by the Board.

+ Details of the Group’s growth opportunities are set out in the  

Operating Review on pages 44 to 47

1
2
3

COMMODITY PRICES
The Group’s results are heavily dependent 
on commodity prices – principally copper and, to 
a lesser extent, gold and molybdenum. The prices 
of these commodities are strongly influenced by a 
variety of external factors, including world economic 
growth, inventory balances, industry demand and 
supply, possible substitution, etc. 

MITIGATION
The Group considers exposure to commodity price fluctuations to be an integral part of 
the business and its usual policy is to sell its products at prevailing market prices. The Group 
monitors the commodity markets closely to determine the effect of price fluctuations on 
earnings, capital expenditure and cash flows. Very occasionally, when it feels appropriate, 
the Group uses derivative instruments to manage its exposure to commodity price fluctuations. 
The Group runs its business plans through various different commodity price scenarios and 
develops contingency plans as required.

+ The sensitivity of the Group’s earnings to movements in commodity prices  

is set out in Note 24 to the financial statements

1

FOREIGN CURRENCY
The Group’s sales are mainly denominated in US 
dollars although some of the Group’s operating costs 
are in Chilean pesos.

The strengthening of the Chilean peso may negatively 
affect the Group’s financial results.

MITIGATION
As copper exports account for over 50% of Chile’s exports, there is a correlation between the 
copper price and the US dollar/Chilean peso exchange rate. This natural hedge partly mitigates 
the Group’s foreign exchange exposure. However, the Group monitors the foreign exchange 
markets and the macroeconomic variables that affect them and on occasion implements a 
focused currency hedging programme to reduce short-term exposure to fluctuations in the 
US dollar against the Chilean peso.

+ Details of the Group’s currency hedging arrangements are shown  

in Note 24 to the financial statements

19

antofagasta.co.ukSTRATEGIC REPORT 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PRINCIPAL RISKS CONTINUED

OPERATING RISKS

1

STRATEGIC INPUTS
Disruption to the supply of any of the Group’s key 
strategic inputs such as electricity, water, fuel, 
sulphuric acid and mining equipment could have 
a negative impact on production. Longer term, 
any restrictions on the availability of key strategic 
resources such as water and electricity could affect 
the Group’s opportunities for growth.

A significant portion of the Group’s input costs are 
influenced by external market factors.

1
2

OPERATING
Mining operations are subject to a number of 
circumstances not wholly within the Group’s control. 
These include damage to or breakdown of equipment 
or infrastructure, unexpected geological variations 
or technical issues, extreme weather conditions and 
natural disasters, any of which could adversely affect 
production and/or costs.

2
3

PROJECT MANAGEMENT
Failure to effectively manage the Group’s 
development projects could result in delays 
in the start of production and cost overruns.

20

MITIGATION
Contingency plans are in place to address any short-term disruptions to strategic resources. 
The Group negotiates early with suppliers of key inputs to ensure supply continuity. Certain key 
supplies are purchased from several sources to mitigate potential disruption arising from 
exposure to a single supplier.

Technological and innovative solutions, such as using sea water in the Group’s mining 
operations, can help mitigate exposure to potentially scarce resources.

The Group also utilises several sources of renewable energy such as wind and solar power 
as well as conventional sources such as coal and gas-fired generators.

+ Details on the strategic inputs of the Group are included within the Operating Review on pages 
28 to 32 and details on projects reviews are included within the Project Committee report 
on pages 100 to 101

MITIGATION
Key risks relating to each operation are identified as part of the regular risk review process 
undertaken by the individual operations. This process also identifies appropriate mitigation 
techniques for such risks. Monthly reports to the Board provide variance analysis of operating 
and financial performance, and allow potential key issues to be identified in good time and any 
necessary actions, such as monitoring or control activities, to be implemented to prevent 
unplanned downtime.

The Group has Business Continuity Plans and Disaster Recovery Plans for all key processes 
within its operations in order to mitigate the consequences of a crisis or natural disaster. 
The Group also has property damage and business interruption insurance to provide protection 
from some, although not all, of the costs that may arise from such events.

+ Details of the performance of each of the Group’s operations are included within the Operating 

Review on pages 34 to 43 

MITIGATION
The Group has a project management system consisting of standards, manuals and procedures 
containing the best practices applicable and enforceable in all phases of project development. 
The project management system supports the decision-making process by balancing risk with 
benefit, increasing the likelihood of success and providing a common language and standards. 
All geometallurgical models are reviewed by independent experts.

During the project lifecycle, quality checks for each of the standards applied are carried out 
by a panel of experts from within the Group. This panel reviews each feasibility study to assess 
the technical and commercial viability of the project and how it can be safely developed. 
Detailed progress reports on ongoing projects are regularly reviewed and include assessments 
of progress against key project milestones and performance against budget.

+ Details on the progress of the Group’s projects are included within the Operating Review on 

pages 44 to 47 , and details on project reviews are included within the Projects Committee report 
on pages 100 to 101

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2

POLITICAL, LEGAL AND REGULATORY
The Group may be affected by political instability 
and regulatory developments in the countries in 
which it is operating, pursuing projects or conducting 
exploration activities. Issues regarding the granting 
of permits, or amendments to permits already 
granted, and changes to the legal environment 
or regulations, could adversely affect the Group’s 
operations and development projects.

MITIGATION
Political, legal and regulatory developments affecting the Group’s operations and projects are 
monitored continually. The Group operates in full compliance with the existing laws, regulations, 
licences, permits and rights in each country in which it operates.

The Group assesses political risk as part of its evaluation of potential projects, including the 
nature of any foreign investment agreements.

The Group monitors proposed changes in government policies and regulations and belongs to 
several associations that engage with the government on these changes. This helps to improve 
the Group’s internal processes and better prepare it to meet any new regulatory requirements. 

+ Details of any significant political, legal or regulatory issues that may impact the Group’s 

operations are included within the Operating Review on pages 34 to 43

1
2
3

IDENTIFICATION OF NEW  
MINERAL RESOURCES
The Group needs to identify new mineral resources 
to ensure continued future growth and does so 
through exploration and acquisition. There is a risk 
that exploration activities may not identify sufficient 
viable mineral resources.

MITIGATION
The Group conducts exploration programmes both in Chile and in other countries. The Group 
has entered into early-stage exploration agreements and strategic alliances with third parties 
in a number of countries and has also acquired equity interests in companies with known 
geological potential. The Group focuses its exploration activities on stable and secure countries 
to reduce risk exposure.

+ A review of the Group’s exploration activities is set out in the Operating Review on page 33

1
2
3

ORE RESERVES AND MINERAL 
RESOURCES ESTIMATES
The Group’s ore reserves and mineral resources 
estimates are subject to a number of assumptions, 
including geological, metallurgical and technical 
factors, future commodity prices and production 
costs. Fluctuations in these variables may result 
in some reserves or resources being deemed 
uneconomic, which could lead to a reduction 
in reserves and/or resources.

MITIGATION
The Group’s reserves and resources estimates are updated annually to reflect material 
extracted during the year, the results of drilling programmes and any revised assumptions. 
The Group follows the Australasian Code for Reporting of Exploration Results, Mineral 
Resources and Ore Reserves (the “JORC Code”) in reporting its ore reserves and mineral 
resources. This requires reserves and resources estimates to be based on work undertaken 
by a Competent Person, as defined by the Code. In addition, the Group’s reserves and 
resources estimates are subject to a comprehensive programme of internal and external audits.

+ The ore reserves and mineral resources estimates, along with supporting explanations, are set out 

on pages 196 to 205

21

antofagasta.co.ukSTRATEGIC REPORT 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PRINCIPAL RISKS CONTINUED

SUSTAINABILITY RISKS

1

SAFETY AND HEALTH
Safety and health incidents could result 
in harm to the Group’s employees, 
contractors or local communities. 
Ensuring their safety and wellbeing is first 
and foremost an ethical obligation for the 
Group, as stated in the Group core values.

A poor safety record or serious accidents 
could have a long-term impact on the 
Group’s morale, reputation and production.

1
2

COMMUNITY RELATIONS
Failure to identify and manage local 
concerns and expectations can have a 
negative impact on the Group. Relations 
with local communities and stakeholders 
affect the Group’s reputation and social 
licence to operate and grow.

MITIGATION
The Group is seeking continuous improvement of its safety and health risk management procedures, 
with particular focus on the early identification of risk and preventing fatalities.

The Corporate Safety and Health Department provides a common strategy for the Group’s operations 
and co-ordinates all safety and health matters. The Group has a Significant Incident Report system, which 
is an important part of the overall approach to safety.

The Group’s goal of zero fatalities and minimising the number of accidents requires all contractors to 
comply with the Group’s Occupational Safety and Health Plan. This is monitored through monthly audits 
and supported by regular training and awareness campaigns for employees, contractors, employees’ 
families and local communities, particularly with regard to road safety.

Critical controls and verification tools are regularly strengthened through the verification programme 
and regular audits of critical controls for potentially high-risk activities.

+ Details of the Group’s safety and health activities are included on pages 56 to 57

MITIGATION
The Group has a dedicated team that establishes and maintains relations with local communities. These 
are based on trust and mutual benefit throughout the mining lifecycle, from exploration to final remediation. 
The Group seeks to identify early any potentially negative operating impacts and minimise these through 
responsible behaviour. This means acting transparently and ethically, prioritising the safety and health 
of its employees and contractors, avoiding environmental incidents, promoting dialogue, complying with 
commitments to stakeholders and establishing mechanisms to prevent or address a crisis. These steps 
are undertaken in the early stages of each project and continue throughout the life of each operation.

The Group contributes to the development of communities in the areas in which it operates, particularly 
through human capital development – the education, training and employment of the local population. 
The Group endeavours to communicate clearly and transparently with local communities, in line with the 
established Community Relations Plan, including the use of a grievance management process, local 
perception surveys, and local media and community engagement.
+ Further information about the Group’s activities in respect of community relations is set out 

on pages 60 to 61

2
3

ENVIRONMENTAL MANAGEMENT
An operating incident that damages the 
environment could affect both the Group’s 
relationship with local stakeholders and its 
reputation, undermining its social licence 
to operate and to grow.

The Group operates in challenging 
environments, including the Atacama 
Desert, where water scarcity is a 
key issue.

MITIGATION
The Group has a comprehensive approach to incident prevention. Relevant risks are assessed, monitored 
and controlled in order to achieve the goal of zero incidents with significant environmental impact. 
The Group works to raise awareness among employees and contractors and provides training to promote 
operating excellence. Potential environmental impacts are key considerations when assessing project 
viability, and the integration of innovative technology in the project design to mitigate these effects is 
encouraged. For example, the Group strives to ensure maximum efficiency in water use, pioneering the use 
of sea water for mining operations in the arid Antofagasta Region of Chile and, most recently, introducing 
thickened tailings technology at Centinela to achieve higher rates of reuse and recovery.

+ Further information in respect of the Group’s environmental activities is set out on pages 62 to 64

22

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2

TALENT MANAGEMENT  
AND LABOUR RELATIONS
The Group’s highly skilled workforce 
and experienced management team are 
critical to maintaining current operations, 
implementing development projects, 
achieving long-term growth and 
preserving current operations without 
major disruption. Managing talent and 
maintaining a high-quality labour force 
is a key priority for the Group and any 
failures in this respect could have a 
negative impact on the performance of 
the existing operations and future growth.

1
2
3

CORRUPTION ACTIVITIES
The Group’s operations or projects 
around the world could be affected by 
risks related to corruption or bribery, 
including operating disruptions or delays 
resulting from a refusal to make 
“facilitation payments”. Such risks depend 
on the economic or political stability of the 
country in which the Group is operating.

1
2
3

MITIGATION
The Group maintains good relations with its employees and unions founded on trust, continuous dialogue 
and good working conditions. The Group is committed to safety, non-discrimination and compliance with 
Chile’s strict regulations on labour matters.

There are long-term labour agreements in place with employee unions at each of the Group’s mining 
operations, which help to ensure labour stability.

The Group seeks to identify and address labour issues that may arise throughout the period covered by 
existing labour agreements and to anticipate any potential issues in good time. Contractors are an important 
part of the Group’s workforce and under Chilean law are subject to the same duties and responsibilities 
as the Group’s own employees. The Group’s approach is to treat contractors as strategic associates and 
its goal is to build long-term mutually beneficial contractor relationships. The Group maintains constructive 
relationships with its employees and the unions that represent them through regular communication and 
consultation. Union representatives are regularly involved in discussions about the future of the workforce.

The Group develops the talents of its employees through training and development, invests in initiatives 
to widen the talent pool including increasing the number of women in the workplace, and focuses 
on maintaining good relationships with employees, unions and contractors.

The Group’s Employee Performance Management System is designed to attract and retain key employees 
by creating suitable reward and remuneration structures and providing personal development 
opportunities. The Group has a talent management system to identify and develop internal candidates 
for key management positions, as well as identifying suitable external candidates where appropriate.

+ Details of the Group’s relations with its employees and contractors are set out on pages 31 to 32

MITIGATION
The Group employs procedures and controls against any kind of corruption, including open channels of 
communication that any employee or external party can use in order to raise any concerns or complaints.

In addition, the Group has Ethics Committees composed of senior executives at each of its operations, 
responsible for investigating complaints and taking any necessary measures. They in turn report such 
investigations to the Corporate Ethics Committee, which decides whether any further action is required.

All employees in the Group receive training on the Group Compliance Model, which is subject 
to external certification.

There are also control procedures in place that help to prevent corruption, covering such issues as conflicts 
of interest, suitability of suppliers, receiving and giving of gifts and hospitality, and facilitation payments.

+ Further information about the Group’s activities in respect of corruption activities is set out on pages 56 to 65

INFORMATION SECURITY
Breaches in, or failures of, the Group’s 
information security management could 
adversely impact its business activities.

MITIGATION
The Group’s information security management model is designed with defensive structural controls 
to prevent and mitigate the effects of computer risks. It employs a set of rules and procedures, including 
a Disaster Recovery Plan, to restore critical IT functions.

23

antofagasta.co.ukSTRATEGIC REPORT 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
OPERATING 
PERFORMANCE

The Group seeks to set realistic, but stretching operating 
targets each year and then achieve them year after year.

OPERATING PERFORMANCE 
Business model
Operating Review

Key inputs and cost base
Key relationships
Exploration activities 
Business units 
Growth projects and  
opportunities
Financial Review 

26 

28 
31 
33 
34 

44
48 

 
BUSINESS MODEL

THE MINING LIFECYCLE

INPUTS

RESOURCES AND 
RELATIONSHIPS
The Group’s mining 
operations depend on a 
range of key inputs such 
as energy, water, labour 
and fuel. The management 
of these inputs has a 
significant impact on 
operating costs and the 
sustainability of mining 
operations, so ensuring the 
long-term supply of key 
inputs is a vital part 
of the business.

Chile

International

EXPLORATION
To ensure the sustainability of its mining business in the long term, 
the Group must focus on expanding its mineral resource base. 

The Group undertakes exploration activities in Chile and abroad, 
with particular focus on the Americas. Exploration programmes outside 
Chile are generally carried out in partnership with other companies 
in order to benefit from their local knowledge and experience. 

3-5 years
+ See page 33 for more information

Los Pelambres 
Incremental 
Expansion

Centinela 
Expansion

Twin Metals

EVALUATION
Effective project evaluation and design maximise value at this stage 
of the mining cycle. The Group’s wealth of experience in both areas 
helps to make the best use of established mineral deposits.The Group 
integrates sustainability criteria into the design process and project 
evaluation phase, developing innovative solutions for challenges such 
as water availability, long-term energy supply and community relations. 

5 years
+ See page 44 for more information

Encuentro 
Oxides

Centinela 
Molybdenum 
Plant

CONSTRUCTION
Once a project has been approved by the Board, construction begins. 

This stage requires significant input of capital and resources, and 
effective project management and cost control maximise a project’s 
return on investment. 

The Group has a co-operative approach to developing projects. 
Typically, after the feasibility stage, and before the construction phase, 
the Group seeks a development partner, generating an immediate cash 
return, diversifying risk and providing broader access to funding, while 
maintaining operating control of the project.

3-5 years
+ See pages 44 to 47 for more information

Los Pelambres

Centinela

Antucoya

Zaldívar

EXTRACTION
The Group’s four operations in Chile are Los Pelambres, Centinela, 
Antucoya and Zaldívar. 

The world-class Los Pelambres and Centinela mining districts have 
long-life copper mining operations with large mineral resources 
and produce significant volumes of gold, silver and molybdenum 
as by-products. All of the Group’s mines are open pit operations.

Safety and health are key elements of operating efficiency and remain 
a top priority for the Board and management team.

20+ years
+ See pages 36 to 41 for more information

+ See page 28  

for more information

CORE VALUES

26

 Sustainability

 Safety and health

Antofagasta plc Annual Report 2017CREATING VALUE TROUGH THE MINING LIFECYCLE
Mining is a long-term business and timescales can often run into decades. The period from initial exploration to the start of production can 
exceed ten years and, depending on the nature of the project and the market conditions, it may take more than five years of operation to recoup 
the initial investment.

Where possible, mines exploit higher-grade areas towards the start of the mine life in order to maximise returns. As a result, average ore 
grades may decline over time, with production volumes decreasing along with revenue.

MINE CLOSURE
During the operation of a mine, its impact on the environment and the neighbouring 
communities is carefully managed. At the end of its life, a mine must be closed 
and its surroundings restored to their original state.

A closure plan for each mine is maintained and updated throughout its life to ensure 
compliance with the latest regulations and provide for a sustainable closure.

+ See page 63 for more information

MARKETING
The marketing team builds long-term relationships with the smelters and fabricators 
who purchase the Group’s products, with approximately 70% of output going to 
Asian markets.

As well as copper, Los Pelambres and Centinela produce significant volumes of gold, 
molybdenum and silver as by-products. Gold and silver are sold for industrial and 
electronic applications and in jewellery-making. Molybdenum is used to produce  
steel alloys.

Most copper and molybdenum sales are made under annual contracts or 
longer-term framework agreements. Sales volumes are agreed each year, 
which guarantees offtake.

+ See page 31 for more information

OUTPUTS
The Group’s  
mining operations  
create significant 
economic and  
social value for a wide 
range of stakeholders. 
Local communities benefit 
from job creation and 
improved infrastructure, 
while the Chilean 
government and local 
municipalities receive tax 
payments and royalties. 

There are also benefits to 
society in general, with the 
copper the Group 
produces being used 
across many sectors, from 
industrial to medical, and 
increasingly in renewable 
and green technologies. 

The copper and by-
products from the Group’s 
mines go on to be further 
processed for use in 
end markets, including 
property, power, 
electronics, transport and 
consumer products.

PROCESSING
The Group mines both copper sulphide and copper oxide ores, which require 
different processing routes:

Los Pelambres and Centinela Concentrates 
Mined sulphide ore is milled to reduce its size before passing to flotation cells where 
it is upgraded to a concentrate containing 25–35% copper. This concentrate is then 
shipped to a smelter operated by a third party and converted to copper metal.

Centinela Cathodes, Antucoya and Zaldívar 
Mined oxide ore, sometimes combined with leachable sulphide ore, is crushed, piled 
into heaps and then leached with sulphuric acid, producing a copper solution. 
This solution is then put through a solvent extraction and electrowinning (“SX-EW”) 
plant to produce copper cathodes, which are sold to fabricators around the world.

+ See pages 36 to 41 for more information

+ See pages 48 to 53  
for more information

CORE VALUES

 Respect

 Innovation

 Excellence

 Forward thinking

27

antofagasta.co.ukSTRATEGIC REPORTOPERATING REVIEW

KEY INPUTS 
AND COST BASE

The Group’s mining operations depend on many inputs, ranging from energy 
and water to labour and fuel, the most important of which are reviewed below.

Concentrate producers such as Los Pelambres and Centinela require 
other particular inputs such as reagents and grinding media. Cathode 
producers such as Centinela, Antucoya and Zaldívar, which use the 
SX-EW process, require sulphuric acid. The availability, cost and 
reliability of these inputs are central to the Group’s cost management 
strategy, which focuses on cost control and security of supply.

The Group’s two largest operations, Los Pelambres and Centinela, 
are already competitively positioned on the copper industry cost 
curve. The Group’s operations and the industry as a whole have a 
declining grade profile over time, which places upward pressure on 
unit costs. During the year the initiatives below have been 
implemented by the Group’s Procurement Department to reduce the 
unit cost of each operation and allow each to remain profitable as ore 
grades decline.

ENERGY
The Group sources its energy from the two electricity grids in Chile: 
the northern grid (SING), which supplies the Centinela, Antucoya  
and Zaldívar mines, and the central grid (SIC) which supplies Los 
Pelambres. The SING has an installed capacity of 5.3GW, supplied 
by coal-fired power stations and renewable sources such as wind  
and solar. The SIC’s installed capacity is 17.4GW, primarily from 
hydroelectric plants. Due to this reliance on hydroelectric power,  
the cost of energy on the SIC fluctuates depending on precipitation 
levels, whereas on the SING costs tend to be more stable.

Water for each operation is sourced either from the sea or from 
surface and underground sources. Each operation has the necessary 
permits for the long-term supply of water at current production levels.

The Group optimises water efficiency by reducing demand, using 
untreated sea water and encouraging recycling across its operations. 
Water reuse rates depend on a range of factors and the Group 
seeks to achieve a rate of 76–93% depending on circumstances 
at each operation.

The Group pioneered the use of untreated sea water in the 1990s 
and currently uses it at Centinela and Antucoya. In 2017, sea water 
accounted for 45% of total Group water use, a decrease from the 
previous year.

LABOUR
Secure labour supply is key to the Group’s success. Labour 
agreements with unions are in place at all of the Group’s mining 
operations, generally lasting for a period of three years. In 2017, 
the Group successfully entered into new labour agreements with 
the unions at Centinela and Zaldívar. 

The Group continues to foster good working relationships with its 
employees and unions and to date there has been no industrial action. 
At Centinela, the Group was able to conclude labour agreements 
several months in advance of the formal negotiation period, 
streamlining benefits across the three main unions at the mine.

In 2014, the Chilean government began a process to connect the 
SING and SIC power grids to increase the reliability of the national 
power system. This should be completed in 2018. The new integrated 
grid will supply 99% of national demand, increasing customer access 
to a range of power generation sources and bringing stability to 
power prices throughout the year.

Contractors account for approximately 70% of the workforce across 
the Group’s operations, and are responsible for labour negotiations 
with their own employees. The Group maintains strong relations 
with all contractors to ensure operating continuity and requires all 
contractors to adhere to the same standards expected of its own 
employees, particularly in the areas of safety and health.

Approximately 19% of the Group’s cash costs are energy related. 
To manage price fluctuations, the Group has medium and long-term 
electricity contracts, called Power Purchase Agreements (PPAs) 
at each operation. Pricing, in most cases, is linked to the cost of 
electricity on the Chilean grids or the generation costs of a supplier, 
the latter being subject to adjustments for inflation and fuel input 
prices. The Group operations’ power requirements, which previously 
had some exposure to spot prices, are now all under PPAs.

All of the Group operations located on the SING benefit from 
long-term contracts, mostly indexed to the price of coal. The first 
of these to expire will be the PPA supplying 100% of Zaldívar’s 
power until 2020. The Group has invited several suppliers to bid for 
the long-term power contracts for Zaldívar, and hopes to conclude 
the process in 2018.The Group’s other PPAs continue until 2026–28.

WATER
Water is a precious commodity in the regions where the Group’s 
mines operate, so the efficient use and recycling of water 
is extremely important.

28

Antofagasta plc Annual Report 2017INPUTS

SERVICE CONTRACTS AND KEY SUPPLIES
The Group’s Central Procurement Department negotiates corporate-
level agreements for key purchases such as mining equipment, tyres 
and reagents. It also achieves synergies and economies of scale in 
other high-spend areas, while co-ordinating activities at each of the 
mining operations. A core of experts defines product and service 
categories, and procurement policies and procedures are 
standardised across the Group. 

The Group continually reviews its procurement processes and 
existing agreements, identifying additional cost-saving opportunities 
during the coming years as part of its Cost and 
Competitiveness Programme.

In total, the Group has over 3,000 suppliers for goods and services. 
Key contracts, such as tyres, grinding media, mining and mobile 
equipment, chemicals, explosives, camp administration and 
maintenance, are under long-term agreements. Price adjustment 
formulae reflect the market variations of key cost elements, such 
as steel, petrol and the Consumer Price Index (CPI). Contracts are 
normally negotiated between the operation and the supplier, but 
tenders and negotiations are generally co-ordinated, and sometimes 
led, by the Central Procurement Department in order to maximise 
leverage and benefits.

The Group’s corporate procurement team uses a variety of strategies, 
such as full-price competition, price auctions, sourcing from China 
and working with strategic suppliers to reduce the costs to each party 
and achieve a sustainable, longer-term, lower-cost base.

OIL PRICE
Fuel represents approximately 7% of total cash costs and is used in 
trucks transporting ore and waste at the mine sites. Improving fuel 
efficiency is a priority, with the amount of fuel consumed per tonne 
of material extracted being a key measure. Fuel is supplied by Chile’s 
two largest suppliers to avoid sole supplier risk.

The oil price tends to affect the spot price of energy, shipping rates 
for supplies and products, and the cost of items such as tyres and 
conveyor belts, which contain oil-based products. The oil price rose 
by approximately 15% during 2017, putting pressure on the Group’s 
operating cost base.

SULPHURIC ACID
The sulphuric acid market was tight during 2017 due to supply 
disruptions in many regions of the world. This increased the regional 
deficit and caused prices to rise during the year. 

The Group secures most of its sulphuric acid requirements under 
contracts for a year or longer, at prices normally agreed in the latter 
part of the previous year. The tight market in 2017 is reflected 
in higher acid prices in 2018.

EXCHANGE RATE
Costs are affected by the Chilean peso to US dollar exchange rate,  
as approximately 35-40% of the mining division’s operating costs  
are in Chilean pesos. However, as over half of Chile’s foreign 
exchange earnings are generated from copper sales, an increase  
in the copper price tends to weaken the Chilean peso and vice versa 
and so a natural hedge exists for the Group. During 2017, the Chilean 
peso strengthened by 4.1% from Ch$677/$1 in 2016 to Ch$649/$1.  
During the first two months of 2018 it strengthened further,  
averaging Ch$601/$1.

29

antofagasta.co.ukSTRATEGIC REPORTOPERATING REVIEW CONTINUED

KEY INPUTS AND COST BASE CONTINUED

COST AND COMPETITIVENESS PROGRAMME
The Group introduced its Cost and Competitiveness Programme 
(CCP) in 2014, with the aim of reducing its cost base and 
improving the Group’s competitiveness within the industry. 
Since then, it has achieved savings in mine site costs of $525 
million, approximately $166 million of which were made during 
2017. These savings are equivalent to 11 cents per pound 
for the year.

Examples of  
savings initiatives
 − Renegotiation of truck 
maintenance contracts

 − Negotiation with explosive 

service providers

 − Optimisation of fuel 
transport services

Sustainable practice

 − Contract administration 

model

 − Improving grinding media 

 − Maintenance strategy 

consumption 

 − Minimising waste in blasting 

to reduce explosives 
consumption

 − New Operating Model 

 − New Operating Model

implementation 
(strengthening of key 
processes) 

 − Optimising the organisational 

structure

 − Modifying peak consumption 

 − Energy optimisation

patterns to reduce 
power costs 

The Group target for 2018 is for a further $100 million of operating 
cost savings, to be achieved mainly through asset and labour 
productivity improvements.

The programme focuses on four areas:

1 Services productivity: Improving the productivity and quality 

of contracts while reducing costs

2 Operation and maintenance management: Improving 
the performance of critical processes and finalising the 
implementation of standard maintenance management practices

3 Corporate and organisational effectiveness: Reducing costs 

and restructuring the Group’s organisational framework

4 Energy efficiency: Optimising energy efficiency and lowering 

energy contract prices

30

Antofagasta plc Annual Report 2017 
 
 
 
 
INPUTS

KEY RELATIONSHIPS

The Group’s business model is underpinned by relationships with stakeholders at local, 
regional, national and international levels. Successful management of these relationships 
contributes to the long‑term success of the Group.

CUSTOMERS
Most copper and molybdenum sales are made under annual contracts 
or using longer-term framework agreements, with sales volumes 
agreed for the coming year. Gold is contained in the copper 
concentrates and therefore is part of copper concentrates sales.

The majority of sales are to industrial customers who refine or further 
process the copper – smelters, in the case of copper concentrate 
production, and copper fabricators in the case of cathode production. 
The Group’s marketing team builds long-term relationships with these 
core customers while ensuring customer diversification. The Group 
also maintains relationships with trading companies that participate 
in shorter-term sales agreements, or in the spot market.

Over 80% of the Group’s mining sales are under contracts of a year 
or longer and metals sales pricing is generally based on prevailing 
market prices.

STRUCTURE OF SALES CONTRACTS
Typically, the Group’s sales contracts set out the annual volumes 
to besupplied and the main terms for the sale of each payable metal, 
with the pricing of the contained copper in line with LME prices.

In the case of concentrate, a deduction is made from LME prices to 
reflect TC/RCs – the smelting and refining costs necessary to process 
the concentrate into copper cathodes. These TC/RCs are typically 
determined annually in line with market developments and the parties’ 
assesments of the copper concentrate market at the time of the 
negotiation of the terms.

In the case of copper cathodes transactions a premium, or in some 
cases a discount, on the LME price is negotiated to reflect differences 
in quality, logistics and financing compared with the metal exchange’s 
standard copper contract specifications.

Similarly, the Group’s molybdenum contracts are made under 
long-term framework agreements, with pricing usually based 
on Platts’ average prices.

Across the industry, neither copper producers nor consumers tend 
to make annual commitments for 100% of their respective production 
or needs, and producers normally retain a portion to be sold on the 
spot market throughout the year.

The prices realised by the Group during a specific period will differ 
from the average market price for that period. This is because,  
in line with industry practice, sales agreements generally provide  
for provisional pricing at the time of shipment, with final pricing  
based on the average market price for the month in which settlement 
takes place.

For copper concentrate, sales remain open until settlement occurs, 
on average four months from the shipment date. Settlement for 
the gold and silver content in copper concentrate sales occurs 
approximately one month from shipment. Copper cathode sales 
remain open for an average of one month from shipment. Settlement 
for copper in concentrate sales is later than for copper cathode sales, 

as further refinement of copper in concentrate is needed to produce 
copper metal for sale. Molybdenum sales generally remain open for 
two or three months from shipment.

SUPPLIERS
Suppliers play a critical role in the Group’s ability to operate safely 
and efficiently, providing a large range of products and services from 
grinding media to catering at the mine sites. 

The Group works with over 3,000 suppliers, focusing on the top 
suppliers in each category to ensure the most cost-effective and 
efficient solutions across all operations. A centralised corporate 
procurement team defines and consolidates common procurement 
practices and procedures, with separate targets and procurement 
practices for strategic goods and transactional purchases. 

The teams have increased their expertise in each cost-relevant 
product category, reducing the number of suppliers in order to extract 
greater benefits from selected suppliers over a long period of time. 
One example is the consolidation and integration of all logistics for the 
mining operations within two centres in Chile under a single logistics 
operator. This allows greater control of goods in the supply chain as 
the Group moves towards a “just in time delivery” model. The Group 
has also begun managing return trips of goods leaving the operations, 
in order to significantly reduce the number of trucks needed and 
improve cost and environmental efficiency.

Since 2016 the Group has been operating a Group-wide contract 
administration model that measures performance, costs and 
productivity on a monthly basis. Currently, the 80 largest service 
contracts are managed using this model. In 2017 they accounted for 
over 70% of the cost of service at the operations and over 6,000 
contractor employees. The intention is to reinforce this management 
framework further during 2018.

31

antofagasta.co.ukSTRATEGIC REPORT 
OPERATING REVIEW CONTINUED

KEY RELATIONSHIPS CONTINUED

The Group encourages suppliers to raise any issues or concerns they 
may have about their relationship with the Company, their contracts 
or the workforce. A separate complaints procedure ensures that all 
contracts are awarded in a fair and transparent manner.

All suppliers are audited before a contract is awarded and periodically 
thereafter to ensure compliance with applicable labour and other 
legislation, as well as the Group’s strict safety and health and other 
policies. The Group also monitors suppliers’ financial health and 
requires bank guarantees when deemed necessary.

+ See page 18 for more information

EMPLOYEES
The Group employs approximately 6,200 people, working alongside 
approximately on average 15,000 contractors at its corporate offices, 
operations and projects (including 100% at Zaldívar). Mining 
operations are inherently risky and ensuring the safety and health 
of every employee is not only an absolute priority, but an ethical 
obligation central to the Group’s strategic objectives. 

The Group has created a variety of initiatives over the past few years 
to secure and develop talent, and to increase diversity within the 
organisation. In particular, efforts are being made to increase the 
number of women working in the Group and to attract young 
professionals into the mining industry. 

Relationships with unions are based on mutual respect and 
transparency. This helps the Group to retain employees and avoid 
labour disputes, contributing to greater productivity and business 
efficiency. During 2017, the Group renewed labour agreements with 
employees and supervisors at Centinela and Zaldívar. In the Chilean 
mining industry labour agreements are negotiated with each union for 
a maximum of three years and the Group’s next negotiations are 
scheduled for 2020.

+ See page 58 for more information

CONTRACTORS
The number of contractors working for Antofagasta varies according 
to business needs and the level of construction activity.

At the end of 2017 there were approximately 13,700 contractors 
working at the Group’s operations and projects (including 100% 
at Zaldívar). This was some 6% lower than the same time in 2016, 
principally due to the completion of the Encuentro Oxides project.

Contractors are essential to mining operations and the Group aims 
to build long-term relationships with contractor companies based 
on the highest standards. Safety and health targets are included 
in performance agreements and compliance with safety and human 
rights laws, labour regulations and the Group’s own safety and health 
standards is assessed regularly using internal and external audits. 
Contractors have access to the same mine camp facilities as the 
Group’s own employees and the Group requires that all contractor 
employees must be paid at least 50% above the minimum wage 
required by Chilean law.

+ See page 58 for more information

32

LOCAL COMMUNITIES
It is crucial to have strong relationships with local communities in 
the areas where the Group operates, because without mutual trust, 
co-operation and understanding it is not possible to run a 
mine successfully.

Having clear social policies and regular contact with community 
members helps to identify potential conflicts and maintains the 
Group’s social licence to operate. During 2014 the Group pioneered 
a new community engagement model called “Somos Choapa” (We Are 
Choapa), after the region in which Los Pelambres and its communities 
are located. In 2015, Los Pelambres signed a framework agreement 
with three municipalities under the initiative, and has begun assessing 
a portfolio of projects for sustainable development in the region.

During 2016, the Group resolved long-standing legal issues with the 
Caimanes community, mainly related to the Mauro tailings dam, by 
engaging in open dialogue with the community, prioritising their needs 
and clarifying the Company’s commitments. The dialogue was 
monitored by the Chilean chapter of Transparency International 
to ensure the openness and fairness of the process.

+ See page 60 for more information

GOVERNMENT RELATIONS
Political developments and changes to legislation or regulations 
in Chile, the UK, or other countries where the Group has operations, 
development projects or exploration activities, can affect the 
Group’s business.

The Group monitors new and proposed legislation in order to 
anticipate, mitigate or reduce possible effects and ensure it complies 
with all legal and regulatory obligations. It works with industry bodies 
to engage with governments on public policy, laws, regulations and 
procedures that may affect its business, including such issues as 
climate change and energy security.

The Group assesses political risk when evaluating potential projects, 
including existing foreign investment agreements. It also utilises 
internal and external legal expertise to ensure its rights are protected.

OTHER LOCAL STAKEHOLDERS
Good relationships with other stakeholders situated near the Group’s 
operations and projects, such as local authorities, local media and 
others, are fundamental to the smooth operation and future growth 
of the business. Each of the Group’s operations has a manager who 
oversees these relationships.

Antofagasta plc Annual Report 2017EXPLORATION

EXPLORATION ACTIVITIES

The Group seeks to expand its copper production in Chile and abroad by developing 
new projects and other potential opportunities. Brownfield development within the 
Group’s Los Pelambres and Centinela mining districts in Chile remains the primary 
focus for maximising value while managing associated risks.

The Group has a portfolio of longer-term growth options and actively 
evaluates opportunities that come to market. Long-term growth 
options within the portfolio are under constant evaluation. Given 
the early stage of some of these projects, their potential and timing 
is uncertain and the following outline provides only a high-level 
indication of potential opportunities.

During the year early-stage target-testing drilling was conducted 
at various projects in the Antofagasta Region in the north of Chile and 
target-confirmation drilling was completed at the Encierro project 
in the Atacama Region. An environmental impact study was approved 
for the Cachorro project, south of Antucoya, and significant drilling 
programmes are planned at both Encierro and Cachorro during 2018.

EXPLORATION ACTIVITIES
Exploration, in Chile and internationally, remains a key contributor to 
the sustainable and long-term growth of the Group´s copper business. 
The Group has an active programme of early and intermediate stage 
exploration projects managed by its exploration teams in Santiago, 
Lima and Toronto. Exploration is conducted using in-house teams 
and through partnerships with selected third parties, with the aim 
of building a portfolio of long-term opportunities in Chile and 
the Americas. 

Following initial positive results at the Group’s ongoing projects, 
exploration and evaluation expenditure increased from $44.3 million 
in 2016 to $68.8 million in 2017.

CHILE
All exploration in Chile is carried out by the Group´s Santiago-based 
exploration team, with activity focused along the main copper belts of 
northern and central Chile as well as in prospective new belts. A key 
activity is the rationalisation of the Group’s exploration assets and land 
holdings, with the acquisition of new exploration licences in the areas 
of focus and the relinquishment of lower priority ground. 

In addition, resource delineation drilling was carried out at the Sierra 
project south of Antucoya and new resource models were completed 
for both Brujulina, near El Abra, and the hypogene copper-gold 
mineralisation project at Zaldívar. 

INTERNATIONAL
The Group’s international exploration business model includes 
partnering with technically strong and locally-experienced operators. 
This ensures that funding is spent effectively and directly on projects, 
minimising expenditure on local administration. 

During 2017, significant progress was made in consolidating the 
Group´s international exploration activities to focus attention solely 
on the Americas. An exploration office has been re-established in 
Peru and additional resources have been assigned to North America 
in order to support increased levels of activity in Canada, the US and 
selected areas of Mexico, where the Group has a portfolio of 
early-stage projects. 

During 2017 several projects in British Columbia in Canada were drill 
tested and the Group exited from non-core projects in Zambia, 
Australia and the south-west Pacific region.

+ See page 196 to 205 for more information regarding reserves and resources

33

antofagasta.co.ukSTRATEGIC REPORT 
OPERATING REVIEW CONTINUED

BUSINESS 
UNITS

PERU

BOLIVIA

ESPERANZA 
PORT

MEJILLONES

ANTOFAGASTA

ANTUCOYA

CENTINELA

Antofagasta  
Region

ZALDÍVAR

Antofagasta  
Region

Coquimbo 
Region

ARGENTINA

SANTIAGO

PACIFIC OCEAN

CHILE

LA SERENA

Coquimbo 
Region

PUNTA  
CHUNGO 
PORT

ILLAPEL

LOS VILOS

LOS PELAMBRES

34

Antofagasta plc Annual Report 2017EXPLORATION

EVALUATION

CONSTRUCTION

EXTRACTION

PROCESSING

MARKETING

All of the Group’s operations are located in the 
Antofagasta Region of northern Chile except for its 
flagship operation, Los Pelambres, which is in the 
Coquimbo Region of central Chile.

704,300

Tonnes of copper produced in 2017 

212,400

Ounces of gold produced in 2017 

10,500

Tonnes of molybdenum produced in 2017 

$1.25/lb

Net cash costs in 2017

Los Pelambres

Centinela

Antucoya

Zaldívar

Capital city

Cities and town centres

Ports

LOS PELAMBRES

p36

CENTINELA

p38

ANTUCOYA

p40

ZALDÍVAR

p41

TRANSPORT DIVISION

p42

GROWTH PROJECTS  
AND OPPORTUNITIES

p44

35

antofagasta.co.ukSTRATEGIC REPORTOPERATING REVIEW CONTINUED

MINING DIVISION 

LOS PELAMBRES

Los Pelambres is a sulphide deposit in Chile’s Coquimbo Region, 
240 km north of Santiago. It produces copper concentrate 
(containing gold and silver) and molybdenum concentrate through 
a milling and flotation process.

2017 PRODUCTION

2017 FINANCIALS

Copper (tonnes)
343,800 (3.3%)

Molybdenum (tonnes)
10,500 +47.9%

Gold (ounces)
55,400 (4.2%)

EBITDA
$1,428m +55.0%

Net cash costs
$1.02/lb (3.8%)

2018 FORECAST

Copper (tonnes)
345–355,000

Molybdenum (tonnes)
10–11,000

Gold (ounces)
60–70,000

COPPER PRODUCTION (‘000 TONNES)

Antofagasta  
Region

Antofagasta  

Region

Antofagasta  

Region

Coquimbo 
Region

LOS  
PELAMBRES

60%
owned

2000
Start of  
operations

21 years
Remaining 
mine life

343.8

355.4

363.2

343,800 tonnes 
produced in 2017

17

16

15

36

Antofagasta plc Annual Report 2017EVALUATION

CONSTRUCTION

EXTRACTION

PROCESSING

MARKETING

2017 PERFORMANCE

OUTLOOK

Operating performance
EBITDA at Los Pelambres was $1,428 million in 2017, compared 
with $921 million in 2016, reflecting increased realised metal prices.

Production
Copper production was 343,800 tonnes in 2017, which was 3.3% 
lower than in 2016. This decrease was primarily due to lower grades, 
which dropped from 0.73% to 0.68%. 

Molybdenum production for the year was 10,500 tonnes, 47.9% 
higher than in 2016, due to higher grades, recoveries and throughput. 
Gold production was 4.2% lower in 2017 at 55,400 ounces, compared 
with 57,800 ounces in 2016.

Cash costs
Cash costs before by-product credits at $1.44/lb were 5.9%  
higher than in 2016, as grades decreased, partially compensated by 
higher throughput. Net cash costs in 2017 were $1.02/lb compared 
with $1.06/lb in 2016, due to significantly higher credits from 
molybdenum sales.

Total capital expenditure in 2017 was $236 million, which included 
$89 million on mine development. Capital expenditure is forecast 
at approximately $365 million in 2018, reflecting the expected start 
of construction of the Incremental Expansion project and higher 
sustaining capital expenditure compared to 2017.

Production
The forecast production for 2018 is 345–355,000 tonnes of payable 
copper (slightly higher than in 2017), 10–11,000 tonnes of molybdenum 
and 60–70,000 ounces of gold.

Cash costs
Cash costs before by-product credits for 2018 are forecast to 
increase to approximately $1.50/lb and net cash costs to increase 
to approximately $1.10/lb.

Legal update
In November 2017, the San Juan Province accepted a plan presented 
by Los Pelambres to remove the Cerro Amarillo waste rock dump, 
and work commenced in December. The execution of the plan is 
subject to certain conditions and the approved time for the removal 
of 5.5 years can be extended by one year in certain circumstances. 
The Company made a provision of $50 million during 2017 for the 
removal of the waste rock. The removal plan does not represent any 
acknowledgement of responsibility by Los Pelambres nor prejudice 
any of its rights, since at the time the Company started construction 
of the waste rock dump it did so in accordance with valid permits 
issued by the responsible Chilean government agencies. 

37

antofagasta.co.ukSTRATEGIC REPORTCENTINELA

Antofagasta  
Region

70%
owned

Coquimbo 
Region
2001
Start of  
operations

50 years
Remaining 
mine life

Antofagasta  

Region

Antofagasta  

Region

OPERATING REVIEW CONTINUED

MINING DIVISION CONTINUED

CENTINELA

Centinela was formed in 2014 from the merger of the Esperanza 
and El Tesoro mining companies. Centinela mines sulphide and 
oxide deposits 1,350 km north of Santiago in the Antofagasta 
Region, one of Chile’s most important mining areas.

Centinela Concentrates produces copper concentrate (containing 
gold and silver) through a milling and flotation process, and 
Centinela Cathodes produces copper cathodes using a solvent 
extraction and electrowinning process SX‑EW.

2018 FORECAST

Copper (tonnes)
230–245,000

Gold (ounces)
130–140,000

Molybdenum (tonnes)
1,500

228.3

236.2

221.1

228,300 tonnes 
produced in 2017 

2017 PRODUCTION

Copper (tonnes)
228,300 (3.3%)

Gold (ounces)
157,000 (26.3%)

2017 FINANCIALS

EBITDA
$859m +52.8%

Net cash costs
$1.36/lb +14.3% 

COPPER PRODUCTION (‘000 TONNES)

17

16

15

38

Antofagasta plc Annual Report 2017EVALUATION

CONSTRUCTION

EXTRACTION

PROCESSING

MARKETING

2017 PERFORMANCE

Operating performance
EBITDA at Centinela was $859 million, compared with $562 million 
in 2016, despite lower production and higher operating costs, as the 
realised copper price increased by 28% and the realised gold price 
rose by 2.1%.

Production
Copper production for the full year 2017 was 228,300 tonnes,  
3.3% lower than in 2016 primarily as a result of lower recoveries  
and lower grades at Centinela Concentrates. This was partly offset  
by higher grades in the oxides line and the start of production 
at Encuentro Oxides.

Copper in concentrate production for the full year was 163,900 
tonnes, 9.1% lower than 2016, mainly reflecting slightly lower grades 
and the consequential drop in recoveries.

Gold production was 157,000 ounces, 26.3% lower than in 2016.  
This was mainly due to lower grades and recoveries. 

Copper cathode production for the year was 64,500 tonnes, 15.6% 
higher than the previous year, as grades increased and Encuentro 
Oxides came into production in the last quarter of the year.

Cash costs
Cash costs before by-product credits for the year were $1.81/lb, 
3.4% higher than in 2016, mainly as a result of lower copper 
production, higher input prices and the payment of a one-off signing 
bonus following the successful conclusion of labour negotiations with 
three unions at the operation. The essential terms of each of the 
labour agreements were standardised, allowing for the completion 
of the operational integration of Esperanza and El Tesoro, which 
began in 2014 when they were merged as Centinela. This completion 
of the integration will bring further improvements in operating 
practices at Centinela and will enable improvements in productivity.

Net cash costs for 2017 were $1.36/lb compared with $1.19/lb 
in 2016. This increase is due to the increase in cash costs before 
by-product credits and lower gold production.

Capital expenditure was $578 million, including $192 million on 
Encuentro Oxides and the molybdenum plant and $264 million 
on mine development. Total project expenditure on the Encuentro 
Oxides project was $605 million, some $30 million under budget. 

Total capital expenditure in 2018 is expected to be $516 million, 
included approximately $280 million on mine development.

OUTLOOK

Production
Production for 2018 is forecast at 230–245,000 tonnes of 
payable copper, 130–140,000 ounces of gold and 1,500 tonnes of 
molybdenum, following the commissioning of the molybdenum plant 
early in 2018. While the grade at Centinela Concentrates will be lower 
than in 2017, Encuentro Oxides will reach full capacity during the 
year, contributing approximately 50,000 tonnes of payable copper.

Cash costs
Cash costs before by-products for 2018 are forecast at approximately 
$1.90/lb and net cash costs at approximately $1.50/lb. 

39

antofagasta.co.ukSTRATEGIC REPORTAntofagasta  
Region

Antofagasta  
Region

OPERATING REVIEW CONTINUED

MINING DIVISION CONTINUED

ANTUCOYA

Antofagasta  
Region

70%
owned

2016
Start of  
operations

22 years
Remaining 
mine life

Coquimbo 
Region

ANTUCOYA

Antucoya is approximately 1,400 km north of Santiago and 125 km 
north‑east of the city of Antofagasta, in Chile’s Antofagasta Region. 
Construction of the project was completed in 2015 with full 
production achieved in 2016. Antucoya mines and leaches oxide 
ore to produce copper cathodes.

2017 PRODUCTION

2017 FINANCIALS

Copper (tonnes)
80,500 +21.6%

EBITDA
$207m +219.4%

Cash costs
$1.68/lb (8.2%)

COPPER PRODUCTION (‘000 TONNES)

17

16

15

12.2

2018 FORECAST

Copper (tonnes)
75–80,000

80.5

66.2

80,500 tonnes 
produced in 2017 

2017 PERFORMANCE

Operating performance
EBITDA at Antucoya was $207 million compared 
with $65 million in 2016, reflecting Antucoya’s first 
year of operation at full capacity. 

Cash costs
Cash costs for the year were $1.68/lb, 8.2% lower 
than in 2016, mainly because of higher production.

Capital expenditure was $44 million, including 
$17 million on mine development.

Production
Production was 80,500 tonnes of copper, 21.6% 
higher than in 2016, following the completion 
of the ramp-up in late 2016. 

OUTLOOK
Production in 2018 is forecast to be approximately 
75–80,000 tonnes and cash costs are expected 
to increase to $1.75/lb.

Total capital expenditure is expected to be 
approximately $57 million, which includes 
$22 million of mine development costs.

40

Antofagasta plc Annual Report 2017EVALUATION

CONSTRUCTION

EXTRACTION

PROCESSING

MARKETING

Antofagasta  
Region

ZALDÍVAR

Zaldívar is an open‑pit, heap‑leach copper mine operating at an average 
elevation of 3,000 meters above sea level, approximately 1,400 km north 
of Santiago and 175 km south‑east of the city of Antofagasta. The Group 
completed the acquisition of a 50% interest in the asset from Barrick 
Gold Corporation in 2015 and is the operator of the mine.

Coquimbo 
Region

2017 PRODUCTION1

2017 FINANCIALS

Copper (tonnes)
51,700 0.0%

EBITDA
$134m +57.7%

Cash costs
$1.62/lb +5.2%

2018 FORECAST

Copper (tonnes)1
55–60,000

1.  Attributable share of production.

COPPER PRODUCTION (‘000 TONNES)

17

16

15

4.4

2017 PERFORMANCE

Operating performance
Attributable EBITDA was $134 million compared 
with $85 million in 2016.

During 2017 the Company successfully concluded 
labour negotiations with the workers’ union.

Production
Total attributable production in 2017 was 51,700 
tonnes of copper cathodes, unchanged from 2016 
as, although the grade increased, recoveries were 
lower due to the significantly higher proportion of 
sulphide ores being processed compared to 2016.

51.7

51.7

51,700 tonnes 
produced in 2017

Cash costs
Cash costs for 2017 were $1.62/lb, 5.2% higher 
than previous year mainly because of impact 
of the one-off signing bonuses following the 
conclusion of the labour negotiations and higher 
input prices. Attributable capital expenditure for 
2017 was $51 million, which includes approximately 
$25 million with respect to mine development. 
These amounts are not included in the Group 
capital expenditure figures.

OUTLOOK
Attributable copper production in 2018 is forecast 
to be approximately 55–60,000 tonnes at a cash 
cost of $1.70/lb. 

Attributable capital expenditure in 2018 is expected 
to be approximately $60 million, of which $10 
million will be spent on mine development.

Antofagasta  
Region

ZALDÍVAR

50%
owned

1995
Start of 
Antofagasta  
operations
Region

13 years
Remaining 
mine life

41

antofagasta.co.ukSTRATEGIC REPORTOPERATING REVIEW CONTINUED

TRANSPORT DIVISION

TRANSPORT DIVISION

The division, known as Ferrocarril de Antofagasta a Bolivia (FCAB), provides 
rail and truck services to the mining industry in the Antofagasta Region.  
The transport division operates its own railway network, with access to 
Bolivia and the two largest ports in the region at Mejillones and the city of 
Antofagasta. The port at Antofagasta is managed by Antofagasta Terminal 
Internacional (ATI), which is minority‑owned by the Group.

100%
owned

1882
Start of  
operations

2017 TONNAGE TRANSPORTED (‘000 TONNES)
6.3m tonnes
1,222
17

16

15

1,186

1,180

Road

Rail

2017 FINANCIALS
EBITDA
$98.1m
17

16

15

5,045

5,310

4,933

98.1

87.7

78.8

2017 PERFORMANCE
During the year, the transport division further optimised its business 
under the FCAB Management Model based on the three key areas of 
sustainability, productivity and cost management. Tonnage 
transported continued in line with the previous year and the railway 
renewed an acid and cathode transport contract with one of its 
largest customers. Additionally, the FCAB was awarded a new 
concentrates transport contract, confirming the competitiveness of its 
cost structure. Furthermore, in early 2018 an additional acid, cathode 
and concentrates contract was awarded to FCAB. Seven new 
locomotives purchased during the year are scheduled to begin 
operating the first half of 2018, and another five locomotives have 
been ordered, optimising the fleet and increasing asset productivity.

42

Operating performance
The division’s EBITDA was $98.1 million in 2017, compared to 
$87.7 million in 2016, reflecting appropriate cost management 
and higher sales from the water business.

Transport tonnage
During 2017 the division transported 6.3 million tonnes, compared 
to 6.5 million tonnes in 2016, 3.5% lower mainly due to labour 
disruptions at one of the division’s clients, partially offset by higher 
road transport volumes and productivity improvements achieved 
during the year.

Costs
Cost management was focused on optimising the division’s 
business processes to ensure the lasting competitiveness of its 
services through better utilisation of the fleet, organisational changes 
and cost savings.

OUTLOOK
The division will continue to develop new business opportunities 
and optimise the use of rolling stock and utilisation of the fleet. 
Improvements are expected in maintenance, using knowledge gained 
from the mining division and best practices from the railway industry, 
and benefiting from the new locomotives and higher fleet availability. 
This is the beginning of a renewal programme of FCAB’s locomotives 
fleet. The implementation of the Costs and Competitiveness 
Programme will further help to keep costs under control. 

One of the main areas of focus in 2018 will be the development of 
projects to service the two new transport contracts. Once these are 
in place in 2019, FCAB’s transport tonnage will increase by about 10%.

Antofagasta plc Annual Report 2017EVALUATION

CONSTRUCTION

EXTRACTION

PROCESSING

MARKETING

CUSTOMERS MAP

Tocopilla

María Elena

Calama

Sierra Gorda

ANTOFAGASTA  
REGION

Mejillones

Antofagasta

Taltal

Road route

Rail route

FCAB customers

SUSTAINABILITY
The division’s sustainability activities are now integrated with 
those of the mining division in the region, leading to improved 
efficiency and the exchange of best practices and experience.

No fatalities or accidents with serious consequences to people 
were reported in 2017. The focus during the year was on 
critical controls to avoid fatalities. The division is now in the 
process of rolling out the relevant verification tools for these 
controls across the organisation. 

The Lost Time Injury Frequency Rate (LTIFR) in 2017 was 
7.3 compared to 4.9 in 2016. Incident reporting, including near 
misses, conditions and actions, increased by 89% over the 
same period, reflecting the effectiveness of the mining 
division’s reporting approach adopted in 2016.

In 2018, the focus will be on consolidating the application 
of critical controls, executing safety leadership practices and 
improving employees’ safety behaviour, while simultaneously 
deepening the interaction with local communities and 
strengthening the division’s image in the region.

43

antofagasta.co.ukSTRATEGIC REPORTOPERATING REVIEW CONTINUED

GROWTH PROJECTS 
AND OPPORTUNITIES

The Group is focused on controlling capital costs and optimising production from existing 
operations. It achieves this through careful project management and constant monitoring 
of the efficiency of its mines, plants and transport infrastructure.

GROWTH PROJECTS
Where possible, debottlenecking and incremental plant expansions 
are used to increase throughput and improve overall efficiencies 
as these projects often have lower capital expenditure requirements 
and generate higher returns than greenfield projects.

The Group continues to review its options for maximising returns and 
reducing the capital cost of projects and is enhancing the capabilities 
of the project team to improve project execution strategy, 
management and control.

At Centinela the expansion of the existing concentrator and using 
its infrastructure (power lines, pipelines, port and other facilities) 
is being considered as an alternative to building a new concentrator.

The Group is also evaluating the disposal of under-utilised assets  
and unlocking value through the sale and lease-back of certain  
infrastructure assets.

CENTINELA SECOND CONCENTRATOR
One alternative under consideration for the expansion of Centinela 
is the construction of a second concentrator some 7 km from 
Centinela’s current concentrator. It is expected to have an ore 
throughput capacity of approximately 90,000 tonnes per day, 
with annual production of approximately 180,000 tonnes of copper 
equivalent, which includes gold and molybdenum as by-products.

Ore will be sourced initially from the Esperanza Sur deposit and, 
once mining is completed at Encuentro Oxides, additionally from 
Encuentro Sulphides.

The EIA for the project was approved in 2016 and the Group has 
commenced applications for the additional permits required for the 
project following certain design modifications made during the year. 
The feasibility study for this $2.7 billion project is due for completion 
by the end of 2018, when a decision will be made on whether 
to proceed with either this project or the expansion of the existing 
plant. If approval is given in 2018 first production is expected in 2022.

However, if the expansion of the existing concentrator is approved 
it is likely that the second concentrator will proceed at a later date. 

There is also scope to increase the plant capacity further  
once the second concentrator is completed, which could bring  
throughput capacity to approximately 150,000 tonnes per day and 
increase the plant’s production to approximately 250,000 tonnes 
of copper equivalent.

180,000 tonnes

copper equivalent production per year

44

Antofagasta plc Annual Report 2017EVALUATION

ALTERNATIVE DEVELOPMENT OPTION
As an alternative to the construction of a second concentrator, 
the Group is evaluating the expansion of the existing concentrator 
and tailings storage facilities as a less capital-intensive alternative. 
Technical viability, capital cost and financial returns will be assessed 
before the completion of the feasibility study for the second 
concentrator. The expansion of the existing concentrator would not 
preclude the later construction of the second concentrator.

More work will be conducted on both expansion options during 2018 
with the intention of the Company being able to select its preferred 
alternative by the end of the year. If it is decided to proceed with the 
expansion of the existing concentrator in prefrence to building a 
second concentrator, a full feasibility study will be required before 
it is taken to the Board for approval. This work would delay the date 
for final project approval by approximately 18 months.

TWIN METALS MINNESOTA
Twin Metals Minnesota is a wholly-owned copper, nickel and platinum 
group metals (PGM) underground mining project which holds the 
Maturi, Maturi Southwest, Birch Lake and Spruce Road copper-nickel-
PGM deposits located in north-eastern Minnesota, US.

During 2017 the Group commenced preparation of the Mine Plan of 
Operations, a pre-requisite for permitting applications. The Group also 
undertook further evaluation and optimisation exercises on the 
pre-feasibility study, completed in 2014, with the aim of completing 
an updated pre-feasibility study by the end of 2018.

In December 2017 the US Department of the Interior reaffirmed Twin 
Metals’ right to renew two federal mineral leases, a right denied in 
December 2016 by the Bureau of Land Management (BLM) and the 
US Forest Service (USFS). These mineral leases cover part of the 
project’s mineral resources.

I

S
T
R
A
T
E
G
C
R
E
P
O
R
T

45

antofagasta.co.uk 
OPERATING REVIEW CONTINUED 

GROWTH PROJECTS AND OPPORTUNITIES CONTINUED

LOS PELAMBRES INCREMENTAL EXPANSION
This expansion project is being carried out in two phases in order 
to simplify the permitting application process and spread the cost over 
a longer period.

Phase 1
This phase is designed to optimise throughput within the limits of 
the existing operating, environmental and water extraction permits, 
with only relatively simple updates required and an EIA for the new 
desalination plant. During this phase, Los Pelambres will operate at 
an average throughput of 190,000 tonnes of ore per day, with the 
addition of a new grinding and flotation circuit to mitigate the impact 
of the harder ore currently being mined, and a 400 litres per second 
desalination plant and associated pipeline. Desalinated water will be 
pumped from the coast to the Mauro tailings storage facility, where 
it will connect with the recycling circuit returning water to the 
Los Pelambres concentrator plant.

During 2017 the Group progressed the EIA for the project with the 
authorities and provided various submissions associated with the 
permitting process. The EIA was approved in February 2018. 

The project’s capital estimate has been updated with current pricing 
projections, advanced detailed engineering and a project execution 
plan to a revised estimate of $1.3 billion. This figure includes the 
concentrator plant expansion and pre-stripping at $780 million and 
the desalination plant and water pipeline at $520 million. The 
desalination plant will serve as a back-up water supply for the entire 
operation – existing plus both phases of expansion – in conditions of 
severe drought. The project is expected to be submitted for approval 
to the Board during the second half of 2018 once ancillary permits 
to the approved EIA are in place and additional geotechnical studies 
at the desalination plant have been completed. 

The project will increase Los Pelambres’ production by 55,000 
tonnes of copper a year from 2021.

+55,000 tonnes

annual copper production

Phase 2
In this phase the Group will seek to increase throughput to 205,000 
tonnes of ore per day and to extend the mine’s life by 15 years beyond 
the currently approved 20 years. As part of this development the 
Group will submit a new EIA to increase the capacity of the mine’s 
Mauro tailings storage facility and mine waste dumps. Work on the 
environmental baseline study for the new EIA started in 2017 and the 
results will be reviewed in late 2018. 

Capital expenditure for this phase was estimated in the pre-feasibility 
study at approximately $500 million, the majority being on mining 
equipment, additional crushing and grinding capacity and flotation 
cells. The conveyors from the primary crusher to the concentrator 
plant will also have to be repowered to support the additional 
throughput. Critical studies on tailings and waste storage capacity are 
underway and should be completed in 2018. However, the project will 
only proceed following a decision on Phase 1 and will require the 
submission of extensive permit applications, including the new EIA. 
First production from this phase would be in 2022 at the earliest and 
is expected to increase copper production by 35,000 tonnes per year.

+35,000 tonnes

annual copper production

46

Antofagasta plc Annual Report 2017EVALUATION

PROJECT COMPLETED DURING THE YEAR

ENCUENTRO OXIDES
The Encuentro Oxides deposit is in the Centinela Mining District. 
It is expected to produce an average of approximately 43,000 tonnes 
of copper cathode per year over an eight-year period, offsetting a 
natural decline in production due to falling mined grades at Centinela’s 
existing oxide pits.

The project was completed during 2017 and first production was 
in September with full production expected in the first half of 2018.

The project entails the installation of new crushing and heap-leach 
facilities at the Encuentro Oxides deposit, a pipeline to take the leach 
solution for processing at the existing SX-EW plant some 17 km away, 
and the extension of the sea water pipeline from Centinela to 
Encuentro. Higher-grade ore will be crushed and sent to the new 
heap-leach facilities, while lower-grade ore will be processed later 
on a Run-of-Mine (ROM) leach pad.

This deposit is important for the Group’s long-term development, 
as Encuentro Oxides sits on top of the much larger Encuentro 
Sulphide deposit. The Encuentro Oxides project therefore acts 
as a funded pre-strip for the sulphide deposit, opening up the latter 
for development as part of the Centinela expansion project.

During 2017, total expenditure incurred was $153 million, bringing 
total expenditure on the project to $605 million, some $30 million 
under budget.

+43,000 tonnes

average copper production per year

$605 million

construction capex, 5% under budget

PROJECT UNDER CONSTRUCTION

MOLYBDENUM PLANT
This project will allow Centinela to produce an average of 2,400 
tonnes of molybdenum per year. Production is expected to start in 
early 2018, and the addition of another by-product credit will lower 
Centinela’s unit net cash costs.

At the end of December 2017, the project was 98% complete 
(including design, engineering, procurement and construction). 
During 2017, total expenditure incurred was $40 million.

47

antofagasta.co.ukSTRATEGIC REPORT 
FINANCIAL REVIEW

SOLID FINANCIAL 
PERFORMANCE

“Earnings per share from continuing 
operations increased by 119%1, 
reflecting the strong growth in  
revenue during the year.”

Alfredo Atucha, CFO

Year ended 
31/12/2017

Total 
$m

4,749.4
2,586.6
(2,318.9)
(589.4)
1,841.1
59.7
1,900.8
(70.0)
1,830.8

(633.6)
1,197.2
0.5 
1,197.7

US cents
76.1
0.1
76.2

Before  
exceptional items 
$m

Exceptional items2 
$m

3,621.7
1,626.1
(2,100.0)
(598.1)
923.6
23.4
947.0
(71.1)
875.9

(313.5)
562.4
38.3
600.7

US cents
34.7
3.9
38.6

–
–
(241.0)
(215.6)
(456.6)
(134.7)
(591.3)
–
(591.3)

204.9
(386.4)
–
(386.4)

US cents
(22.6)
–
(22.6)

Year ended  
31/12/2016

Total 
$m

3,621.7
1,626.1
(2,341.0)
(813.7)
467.0
(111.3)
355.7
(71.1)
284.6

(108.6)
176.0
38.3
214.3

US cents
12.1
3.9
16.0

Revenue
EBITDA (including results from associates and joint ventures)
Operating costs excluding depreciation 
Depreciation, loss on disposals and impairments
Operating profit from subsidiaries
Net share of results from associates and joint ventures
Total profit from operations, associates and joint ventures
Net finance expense
Profit before tax

Income tax expense
Profit from continuing operations
Discontinued operations3
Profit for the year

Basic earnings per share
From continuing operations
From discontinued operations3
Total continuing and discontinued operations

1.  Excluding exceptional items in 2016.
2.  Further details given in Note 4 to the financial statements.
3.  At 31 December 2017 the Group had commenced a process to dispose of Centinela Transmission, the electricity transmission line supplying Centinela and other external 
parties. As a result of this, its net results are shown as a discontinued operation in the income statement. In the 2016 comparatives the net results of the Group’s former 
Michilla operation were shown as a discontinued operation.  
A detailed segmental analysis of the components of the income statement is contained in Note 5 to the financial statements.

48

Antofagasta plc  Annual Report 2017 
 
 
 
 
 
 
 
 
The following table reconciles the change in EBITDA between 2016 and 2017:

OUTPUT

EBITDA in 2016

Revenue
Increase in copper volumes sold
Increase in realised copper price
Decrease in treatment and refining charges
Increase in revenue from copper sales
Decrease in gold revenue
Decrease in silver revenue
Increase in molybdenum revenue
Increase in revenue from by-products

Increase in transport division revenue

Increase in Group revenue

Operating costs

Increase in mine operating costs

Increase in closure provisions

Increase in exploration and evaluation costs

Increase in corporate costs

Decrease in other mining division costs

Increase in operating costs for mining division

Increase in transport division operating costs

Increase in attributable EBITDA relating to associates and joint ventures
Total EBITDA in 2017

REVENUE
Revenue for the Group in 2017 was $4,749.4 million, 31.1% higher 
than in 2016. The increase of $1,127.7 million mainly reflected 
an increase in the realised copper price and copper sales volumes, 
as well as higher molybdenum revenue offset by lower gold and 
silver revenue.

Revenue from the mining division

Revenue from copper sales
Revenue from copper concentrate and copper cathode sales 
increased by $1,111.7 million, or 32.3%, to $4,578.3 million, compared 
with $3,461.5 million in 2016. The increase reflected the impact 
of higher realised prices and increased sales volumes.

(i) Realised copper price
The higher average realised copper price resulted in a $966.4 million 
increase in revenue. The average realised price increased by 28.5% 
to $3.00/lb in 2017 (2016 – $2.33/lb), largely reflecting the 26.7% 
increase in the LME average market price to $2.80/lb (2016 – $2.21/lb). 
In addition, there was a significant positive provisional pricing 
adjustment of $309.5 million, mainly reflecting the increase in the 
year-end copper price to approximately $3.25/lb at 31 December 
2017, compared with around $2.50/lb at 31 December 2015.

In 2017 revenue also includes a loss of $17.1 million (2016 – loss of 
$2.2 million) relating to commodity derivatives which matured during 
the year. Further details of hedging activity in the period are given 
in Note 24(d) to the financial statements.

Realised copper prices are determined by comparing revenue 
(gross of treatment and refining charges for concentrate sales) with 
sales volumes in the period. Realised copper prices differ from market 
prices mainly because, in line with industry practice, concentrate 
and cathode sales agreements generally provide for provisional 
pricing at the time of shipment with final pricing based on the average 
market price for future periods (normally around one month after 
delivery to the customer in the case of cathode sales and normally 
four months after delivery to the customer in the case of concentrate 
sales). Realised copper prices also reflect the impact of realised gains 

$m

1,626.1

122.0
966.4
23.3
1,111.7 
(61.1)
(8.3)
74.5
5.1

10.9

1,127.7

(175.0)

(30.5)

(24.5)

 (15.2)

35.2

(210.0)

(8.9)

51.7
2,586.6

or losses on commodity derivative instruments hedge-accounted-
for in accordance with IAS 39 “Financial Instruments: Recognition 
and Measurements”.
+ Further details of provisional pricing adjustments are given in Note 6 

to the financial statements

(ii) Copper volumes
Copper sales volumes reflected within revenue increased from 
634,100 tonnes in 2016 to 657,700 tonnes in 2017 increasing revenue 
by $122.0 million. This increase was mainly due to Antucoya which 
achieved commercial production on 1 April 2016, and which therefore 
recorded a full 12 months’ of sales volumes within revenue in 2017 
(80,800 tonnes), compared to only nine months’ sales volumes 
in 2016 (54,900 tonnes).

(iii) Treatment and refining charges
Treatment and refining charges for copper concentrate decreased 
by $23.3 million to $277.7 million in 2017 from $301.0 million in 2016, 
mainly due a decrease in the average TCs/RCs. Treatment and 
refining charges are deducted from concentrate sales when reporting 
revenue and hence the decrease in these charges has had a positive 
impact on revenue.

Revenue from molybdenum, gold and other by-product sales
Revenue from by-product sales at Los Pelambres and Centinela  
relate mainly to molybdenum and gold and, to a lesser extent, silver. 
Revenue from by-products increased by $5.1 million or 1.0% 
to $505 million in 2017, compared with $499.9 million in 2016. 
This overall slight increase reflects higher molybdenum revenue 
largely offset by lower gold sales.

Revenue from molybdenum sales (net of roasting charges) was 
$168.5 million (2016 – $94.0 million), an increase of $74.5 million.  
The increase was due to higher sales volumes of 9,600 tonnes  
(2016 – 7,200 tonnes) and an increased realised price of $8.7/lb 
(2016 – $6.8/lb).

49

STRATEGIC REPORTantofagasta.co.uk 
FINANCIAL REVIEW CONTINUED

Revenue from gold sales (net of TCs/RCs) was $278.6 million (2016 
– $339.7 million), a decrease of $61.1 million which mainly reflected 
a decrease in volumes, partly offset by a higher realised price. Gold 
sales volumes decreased by 19.6% from 271,400 ounces in 2016 to 
218,200 ounces in 2017, mainly due to lower grades and recoveries 
at Centinela. The realised gold price was $1,280.4/oz in 2017 
compared with $1,256.1/oz in 2016, with the increase reflecting 
slightly higher market prices. 

Exploration and evaluation costs increased by $24.5 million to 
$68.8 million (2016 – $44.3 million). This reflected a general increase 
in activity, including with early-stage generative exploration activity 
in Chile and drilling work at Los Pelambres. Costs relating to the mine 
closure provisions increased by $30.5 million compared with 2016 
and corporate costs increased by $15.2 million. These increases were 
partly offset by a $35.2 million decrease in other expenses, largely 
relating to decreased community expenditure at Los Pelambres.

Revenue from silver sales decreased by $8.3 million to $58.2 million 
(2016 – $66.2 million). The decrease was due to lower sales volumes 
of 3.5 million ounces (2016 – 3.7 million ounces) as well as a 
decrease in the realised silver price to $16.8/oz (2016 – $17.5/oz).

Revenue from the transport division
Revenue from the transport division (FCAB) increased by  
$10.9 million or 6.8% to $171.1 million, mainly due to increased 
average rail tariffs and higher road tonnages. 

Operating costs (excluding depreciation, loss on disposals and 
impairments)
Operating costs (excluding depreciation, loss on disposals and 
impairments) are considered to provide a useful and comparable 
indication of the current operational performance of the Group’s 
businesses, excluding the depreciation of the historic cost of property, 
plant and equipment.

The Group´s total operating costs (excluding depreciation, loss 
on disposals and impairments) amounted to $2,318.9 million (2016 
– $2,100.0 million), an increase of $218.9 million, mainly due to 
increased costs at the mining division.

Operating costs (excluding depreciation, loss on disposals 
and impairments) at the mining division
Operating costs (excluding depreciation, loss on disposals and 
impairments) at the mining division increased by $210.0 million 
to $2,223.1 million in 2017, an increase of 10.4%. Of this increase, 
$175.0 million is attributable to higher mine site operating costs. 
This increase in minesite costs reflected the higher production 
volumes in the year, the one-off signing bonus payable following the 
successful completion of labour negotiations at Centinela, the stronger 
Chilean peso and higher key input prices, partly offset by cost savings 
from the Group’s Cost and Competitiveness Programme. As a result, 
weighted average unit cash costs excluding by-product credits  
(which are reported as part of revenue) and refining charges  
for concentrates (which are deducted from revenue) increased  
from $1.33/lb in 2016 to $1.41/lb in 2017. 

The Cost and Competitiveness Programme has been designed to 
achieve permanent savings through the application of a structured 
process. During the year, $166 million of savings were achieved, 
bringing total savings since the start of the programme to 
$525 million. These permanent savings have been achieved through 
organisational simplification, improved productivity of services 
and operations, tightened maintenance management and greater 
energy efficiency.

EBITDA 
increased to 
$2,586.6 million

59% 

EBITDA increase

Operating costs (excluding depreciation and loss on 
disposals) at the transport division
Operating costs (excluding depreciation and loss on disposals) at the 
transport division increased by $8.9 million to $95.8 million, mainly 
reflecting higher diesel prices due to the stronger Chilean peso and 
an increase in services provided by third parties.

EBITDA
EBITDA (earnings before interest, tax, depreciation and amortisation) 
increased by $960.5 million or 59.1% to $2,586.6 million  
(2016 –$1,626.1 million). EBITDA includes the Group’s proportional 
share of EBITDA from associates and joint ventures.

EBITDA from the Group’s mining increased by 61.8% from  
$1,538.4 million in 2016 to $2,488.5 million in this year. As explained 
above, this was mainly due to the significant increase in revenue, 
partly offset by the higher unit cash costs and increased exploration 
and evaluation expenditure and mine closure provision costs.

EBITDA at the transport division increased by $10.4 million to  
$98.1 million in 2017, reflecting the increased revenue offset  
by higher operating costs explained above.

Depreciation, amortisation and disposals
The depreciation and amortisation charge was largely in line with 
the prior year at $581.1 million (2016 – $578.4 million). In addition, 
there were losses on disposals of assets of $8.3 million (2016 – loss 
of $19.7 million).

Prior year exceptional impairment provisions
In 2016, the Group recognised exceptional impairment provisions with 
a total impact of $591.3 million before tax. After a corresponding tax 
credit of $204.9 million the after tax impact was $386.4 million.

+ Further details are given in Note 4 to the financial statements

Operating profit from subsidiaries
As a result of the above factors, operating profit from subsidiaries 
increased in 2017 by 294.2% to $1,841.1 million (2016 – $467.0 
million). Of the prior year exceptional impairment provisions outlined 
above $456.6 million were recorded within operating expenses, 
and therefore excluding the exceptional items from the prior year 
figures, the year-on-year increase in operating profit was 
$917.5 million or 99.3%.

Share of results from associates and joint ventures 
The Group’s share of results from associates and joint ventures was 
a gain of $59.7 million in 2017, compared with a loss of $111.3 million 
in 2016. The prior year loss was largely a reflection of the exceptional 
impairment provisions. Of the total prior year impairment provision 
outlined above, $134.7 million was recorded within the share of 
results from associates and joint ventures. Excluding the impact 
of the exceptional impairment provisions from the prior year results, 
the year-on-year increase in the share of results from associates 
and joint ventures was $36.3 million or 55.1%. The improvement 
compared with the prior year mainly reflected a higher contribution 
from Zaldívar due to an increase in the profit after tax (on a 50% 
attributable basis) to $58.5 million (2016 – $29.5 million).

50

Antofagasta plc  Annual Report 2017Net finance expense
Net finance expense in 2017 was $70.0 million, compared with  
$71.1 million in 2016.

Investment income
Interest expense
Other finance items
Net finance expense

Year ended 
31/12/17 
$m
23.8
(91.5)
(2.3)
(70.0)

Year ended 
31/12/16 
$m
26.9
(86.1)
(11.9)
(71.1)

Interest income decreased slightly from $26.9 million in 2016 to $23.8 
million in 2017. Interest expense increased from $86.1 million in 2016 
to $91.5 million in 2017. This was mainly due to a full year of interest 
charges being expensed at Antucoya this year, compared with only 
nine months in 2016 following the achievement of commercial 
production on 1 April 2016.This factor was partly offset by the higher 
capitalisation of interest cost during this year.

OUTPUT

The other finance items were an expense of $2.3 million (2016 – 
expense of $11.9 million). This reflected an expense of $11.6 million for 
the unwinding of the discounting of provisions (2016 – $10.0 million) 
and an expense of $7.8 million relating to the time value element of 
changes in the fair value of derivative options (2016 – gain of $1.0 
million), largely offset by a $17.1 million foreign exchange gain (2016 
– expense of $2.9 million).

Profit before tax
As a result of the factors set out above, profit before tax increased  
by 543.3% to $1,830.8 million (2016 – $284.6 million). Excluding 
exceptional items in 2016, profit before tax increased by $954.8 
million or 109.0%.

Income tax expense
The tax charge for 2017 was $633.6 million and the effective tax 
rate was 34.6%. Excluding the impact of exceptional items in the prior 
year, the 2016 tax charge was $313.5 million and the effective tax 
rate was 35.8%.

Profit before tax
Tax at the Chilean corporate rate tax of 25.5% 
(2016 – 24%)
Provision against carrying value of assets 
(exceptional items)
Effect of increase in future first category tax rates 
on deferred tax balances
Adjustment in respect of prior years
Items not deductible from first category tax
Deduction of mining royalty as an allowable 
expense in determination of first category tax
Credit of tax losses absorbed from dividends 
of the year
Carry-back tax losses resulting in credits 
at historic tax rates
Mining tax (royalty)
Withholding taxes
Withholding taxes – adjustment to previous year
Tax effect of share of results of associates and 
joint ventures
Reversal of previously unrecognised tax losses
Net other items
Tax expense and effective tax rate for the year

$m
1,830.8

Year ended 
31/12/2017 
%

$m
875.9

Year ended 
31/12/2016  
Before  
exceptional Items 
%

Year ended  
31/12/2016  
After  
exceptional Items 
%

$m
284.6

(466.9)

25.5

(210.2)

24.0

(68.3)

–

(0.6)
(35.4)
(26.7)

17.4

(4.3)

–
(78.3)
(64.8)
–

15.2
9.9
0.9
(633.6)

–

–
1.9
1.5

(1.0)

0.2

–
4.3
3.5
–

(0.8)
(0.5)
–
34.6

–

(24.6)
–
(23.7)

8.5

–

(5.4)
(60.1)
–
(3.8)

5.6
–
0.2
(313.5)

–

2.8
–
2.7

(1.0)

–

0.6
6.9
–
0.4

(0.6)
–
(0.0)
35.8

63.0

(24.6)
–
(23.7)

8.5

–

(5.4)
(60.1)
–
(3.8)

5.6
–
0.2
(108.6)

24.0

(22.1)

8.6
–
8.3

(2.9)

–

1.8
21.1
–
1.3

(1.9)
–
(0.0)
38.2

The effective tax rate varied from the statutory rate principally due to the mining royalty tax (impact of $78.3 million/4.3%), the withholding 
tax due on remittances of profits from Chile (impact of $64.8 million/3.5%), adjustments in respect of prior years, which relate to adjustments 
made during the year in the deferred tax asset base (impact of $35.4 million/1.9%) and items not deductible for Chilean corporate tax purposes, 
principally the funding of expenses outside of Chile (impact of $26.7 million/1.5%), partly offset by the deduction of the mining royalty tax which 
is an allowable expense when determining the Chilean corporate tax charge (impact of $17.4 million/1.0%) and the impact of the recognition 
of the Group’s share of profit from associates and joint ventures, which is included in the Group’s profit before tax net of their respective tax 
charges (impact of $15.2 million/0.8%).

+ Further details are given in Note 10 to the financial statements

51

STRATEGIC REPORTantofagasta.co.uk 
 
 
 
 
FINANCIAL REVIEW CONTINUED

Profit from discontinued operations
At 31 December 2017 the Group had commenced a process to 
dispose of Centinela Transmission, the electricity transmission line 
supplying Centinela and other external parties. As a result of this,  
its net results (a gain of $0.5 million) are shown as a discontinued 
operation in the income statement. In the 2016 comparatives the  
net results of the Group’s former Michilla operation (a gain of  
$38.3 million) were shown as a discontinued operation. 

Non-controlling interests
Profit for 2017 attributable to non-controlling interests was  
$447.0 million (2016 – $56.3 million). Excluding the prior year 
exceptional items the profit attributable to non-controlling interests  
in 2016 was $220.9 million.

Earnings per share

Including exceptional items
Earnings per share from continuing 
operations
Earnings per share from discontinued 
operations
Earnings per share from continuing 
and discontinued operations
Excluding exceptional items
Earnings per share from continuing 
operations
Earnings per share from discontinued 
operations
Earnings per share from continuing 
and discontinued operations

Year ended 
31/12/17 
$ cents

Year ended 
31/12/16 
$ cents

76.1

0.1

76.2

76.1

0.1

76.2

12.1

3.9

16.0

34.7

3.9

38.6

Earnings per share calculations are based on 985,856,695 
ordinary shares. 

As a result of the factors set out above, profit attributable to  
equity shareholders of the Company was $750.7 million compared 
with $158.0 million in 2016, and total earnings per share from 
continuing and discontinued operations was 76.2 cents per share 
(2016 – 16.0 cents per share). 

Profit from continuing operations and excluding exceptional items 
attributable to equity shareholders of the Company was $750.2 million 
compared with a profit of $341.5 million in 2016, and earnings per 
share from continuing operations excluding exceptional items was 
76.1 cents per share (2016 – 34.7 cents per share).

Dividends
Dividends per share declared in relation to the period are as follows:

Ordinary
Interim
Final
Total dividends to ordinary shareholders

Year ended 
31/12/17 
$ cents

Year ended 
31/12/16 
$ cents

10.3
40.6 
50.9 

3.1
15.3
18.4

The Board determines the appropriate dividend each year based on 
consideration of the Group’s cash balance, the level of free cash flow 
and underlying earnings generated during the year, and significant 
known or expected funding commitments. It is expected that the total 
annual dividend for each year would represent a payout ratio based 
on underlying net earnings for that year of at least 35%. 

The Board has declared a final dividend for 2017 of 40.6 cents per 
ordinary share, which amounts to $400.3 million and will be paid 
on 25 May 2018 to shareholders on the share register at the close 
of business on 27 April 2018. 

52

The Board declared an interim dividend for the first half of 2017 
of 10.3 cents per ordinary share, which amounted to $101.5 million 
and was paid on 6 October 2017 to shareholders on the share 
register at the close of business on 8 September 2017. 

This gives total dividends proposed in relation to 2017 (including  
the interim dividend) of 50.9 cents per share or $501.8 million  
in total, an increase of 176.6% (2016 – 18.4 cents per ordinary share  
or $181.4 million in total). 

The distributable reserves of Antofagasta plc approximate to the 
balance of its retained earnings reserve and can be increased, 
as required, by the receipt of dividends from its subsidiaries.

Capital expenditure
Capital expenditure increased by $103.9 million from $795.1 million  
in 2016 to $899.0 million. The increase partly reflected increased 
capitalised stripping costs at Centinela and Antucoya, and higher 
capital expenditure at the transport division on locomotives and rolling 
stock. Capital expenditure figures quoted in this report are on a cash 
flow basis, unless stated otherwise.

Derivative financial instruments
The Group periodically uses derivative financial instruments to  
reduce exposure to commodity price movements. At 31 December 
2017 the Group had entered into min/max contracts at Centinela  
and Antucoya for a notional amount of 30,000 tonnes of copper 
production at each operation, covering a period up to 31 December 
2018, with an average minimum price of $2.50/lb and an average 
maximum price of $3.60/lb. 

The Group also periodically uses interest rate swaps to swap floating 
rate interest for fixed rate interest. At 31 December 2017 the Group 
had entered into interest rate swaps at Centinela for a maximum 
notional amount of $35 million at a weighted average fixed rate of 
3.372% maturing in August 2018. The Group had also entered into 
interest rate swaps in relation to a financing loan at the FCAB for a 
maximum notional amount of $60 million at a weighted average fixed 
rate of 1.634% maturing in August 2019.

CASH FLOWS
The key features of the Group cash flow statement are summarised 
in the following table.

Cash flows from continuing and 
discontinued operations
Income tax paid
Net interest paid
Capital contributions and loans to 
associates
Acquisition of joint ventures
Disposal of subsidiaries and joint ventures 
Acquisition of mining properties
Purchases of property, plant and 
equipment
Dividends paid to equity holders of the 
Company 
Dividends paid to non-controlling interests
Dividends from associates
Other items
Changes in net debt relating to cash flows
Other non-cash movements
Exchange 
Movement in net debt in the period
Net debt at the beginning of the year
Net debt at the end of the year

Year ended 
31/12/17 
$m 

Year ended 
31/12/16 
$m

2,495.0
(338.4)
(44.8)

1,457.3
(272.6)
(31.9)

(45.4)
–
3.1
(2.3)

(10.1)
20.0
10.0
(7.0)

(899.0)

(795.1)

(252.3)
(320.0)
81.8
4.3
682.0
(72.2)
5.5
615.3
(1,071.7)
(456.4)

(30.6)
(260.0)
10.2
0.4
90.6
(149.0)
10.2
(48.2)
(1,023.5)
(1,071.7)

Antofagasta plc  Annual Report 2017 
 
 
 
 
 
 
 
 
Cash flows from continuing and discontinued operations were 
$2,495.0 million in 2017 compared with $1,457.3 million in 2016.  
This reflected EBITDA from subsidiaries for the year of $2,430.5 
million1 (2016 – $1,521.7 million) adjusted for the positive impact of a 
net working capital decrease of $12.5 million (2016 – working capital 
increase of $73.3 million) and a non-cash increase in provisions of 
$52.0 million (2016 – increase of $8.9 million).

The net cash outflow in respect of tax in 2017 was $338.4 million 
(2016 – $272.6 million). This amount differs from the current tax 
charge in the consolidated income statement of $509.8 million 
because the cash tax payments comprise payments on account for 
the current year of $294.0 million based on the prior year’s profit 
levels, the settlement of outstanding balances in respect of the 
previous year’s tax charge of $113.7 million and withholding tax due 
on remittances of profits from Chile of $62.1 million, partly offset 
by the recovery of $131.4 million relating to prior years.

In 2017 the cash inflow from the disposal of subsidiaries and joint 
ventures of $3.1 million related to the disposal of Energia Andina 
(2016 – $10.0 million related to the disposal of Minera Michilla).

Contributions and loans to associates and joint ventures of  
$45.4 million relate to the Group’s funding of Alto Maipo  
($36.0 million accrued at December 2016 and paid in 2017), Tethyan 
Copper Company ($9.3 million) and Energia Andina ($0.1 million).

Cash disbursements relating to capital expenditure in 2017 were 
$899.0 million compared with $795.1 million in 2016. This included 
expenditure of $578.3 million at Centinela (2016 – $534.7 million), 
$237.8 million at Los Pelambres (2016 – $215.3 million) and  
$43.6 million at Antucoya (2016 – $9.4 million).

At 31 December 2017 dividends paid to equity holders of the Company 
were $252.3 million (2016 – $30.6 million), which related to the 
payment of $101.5 million as the interim dividend declared in respect 
of the current year (2016 – $30.6 million) and the final element of the 
previous year’s dividend of $150.8 million.

Dividends paid by subsidiaries to non-controlling shareholders were 
$320.0 million (2016 – $260.0 million).

Financial position

Cash, cash equivalents and liquid 
investments
Total borrowings
Net debt at the end of the period

At 31/12/17 
$m

At 31/12/16 
$m

2,252.3
(2,708.7)
(456.4)

2,048.5
(3,120.2)
(1,071.7)

At 31 December 2017 the Group had combined cash, cash equivalents 
and liquid investments of $2,252.3 million (31 December 2016 
– $2,048.5 million). Excluding the non-controlling interest share in 
each partly-owned operation, the Group’s attributable share of cash, 
cash equivalents and liquid investments was $2,002.0 million 
(31 December 2016 – $1,830.2 million). 

New borrowings in 2017 were $272.0 million (2016 – $938.8 million), 
including new short-term borrowings at Los Pelambres of $242.0 
million and Antucoya of $30.0 million. Repayments of borrowings 
and finance leasing obligations in 2017 were $759.0 million, relating 
mainly to repayments at Los Pelambres of $350.7 million, Centinela 
$150.0 million, Antucoya $223.1 million, the corporate centre 
$3.9 million and the transport division $31.3 million.

Total Group borrowings at 31 December 2017 were $2,708.7 million 
(at 31 December 2016 – $3,120.2 million). Of this, $2,043.6 million  
(at 31 December 2016 – $2,329.7 million) is proportionally attributable 
to the Group after excluding the non-controlling interest shareholdings 
in partly-owned operations.

1.  Excluding the Group’s share of EBITDA from associates and joint ventures.

OUTPUT

CAUTIONARY STATEMENT ABOUT FORWARD-LOOKING 
STATEMENTS
This Annual Report contains certain forward-looking statements. 
All statements other than historical facts are forward-looking 
statements. Examples of forward-looking statements include those 
regarding the Group’s strategy, plans, objectives or future operating 
or financial performance, reserve and resource estimates, commodity 
demand and trends in commodity prices, growth opportunities, and 
any assumptions underlying or relating to any of the foregoing. Words 
such as “intend”, “aim”, “project”, “anticipate”, “estimate”, “plan”, 
“believe”, “expect”, “may”, “should”, “will”, “continue” and similar 
expressions identify forward-looking statements.

Forward-looking statements involve known and unknown risks, 
uncertainties, assumptions and other factors that are beyond the 
Group’s control. Given these risks, uncertainties and assumptions, 
actual results could differ materially from any future results expressed 
or implied by these forward-looking statements, which apply only as 
at the date of this report. Important factors that could cause actual 
results to differ from those in the forward-looking statements include: 
global economic conditions; demand, supply and prices for copper 
and other long-term commodity price assumptions (as they materially 
affect the timing and feasibility of future projects and developments); 
trends in the copper mining industry and conditions of the 
international copper markets; the effect of currency exchange rates 
on commodity prices and operating costs; the availability and costs 
associated with mining inputs and labour; operating or technical 
difficulties in connection with mining or development activities; 
employee relations; litigation; and actions and activities of 
governmental authorities, including changes in laws, regulations or 
taxation. Except as required by applicable law, rule or regulation, the 
Group does not undertake any obligation to publicly update or revise 
any forward-looking statements, whether as a result of new 
information, future events or otherwise.

Past performance cannot be relied on as a guide to future performance.

Alfredo Atucha
Chief Financial Officer

53

STRATEGIC REPORTantofagasta.co.uk 
COMMITTED TO CREATING 
SUSTAINABLE VALUE

Mining is a long-term activity which has an even longer-term 
impact and the Group seeks to ensure that its business 
develops on a sustainable basis.

At Antofagasta, the safety and health of the workforce  
always comes first. The Group is also continuously improving 
its environmental performance, contributing to the social 
development of the areas where it operates and maintaining 
open and transparent communication with local stakeholders. 

The sustainability of the Group’s business is structured around five pillars: People, 
Financial Performance, Environmental Management, Social Development and 
Transparency, as set out in the recently updated Sustainability Policy.

Antofagasta remains convinced its operations allow it to produce lasting positive changes 
in the communities and regions where it operates. This drives its constant effort to mine 
in a more efficient, sustainable and inclusive way.

The Group’s sustainability priorities are its values, its principal risks and its stakeholders’ 
key concerns and expectations, all of which are reviewed annually by senior management 
as part of the sustainability reporting process.

IN THIS SECTION
Sustainability highlights
Safety and health 
Employees
Communities
Environment
Sustainability governance

55 
56 
58 
60 
62 
65 

SUSTAINABILITY

SUSTAINABILITY 
HIGHLIGHTS

DURING 2017, ANTOFAGASTA:
 − Achieved its zero fatalities goal, while 

continuing to improve safety and health 
performance.

 − Updated its Sustainability Policy.

 − Set its first carbon emissions reduction target.

 − Reached 45% of sea water usage.

 − Began implementing a new Environmental 

Management System to ensure full compliance 
with its commitments and key risks controls.

 − Approved a Diversity and Inclusion strategy.

 − Obtained governmental recognition of two new 
biodiversity areas protected by Los Pelambres 
– Quebrada de Llau Llau and Palmas de 
Monte Aranda.

 − Had its Somos Choapa programme presented 

at the Chile Architecture and Urbanism Biennial 
Exhibition as a leading example of innovation 
in sustainable engagement between mining 
and communities.

 − Was also given an award for the Somos 

Choapa programme by the Columbia Center 
on Sustainable Investment for the programme’s 
contribution to the UN’s Sustainable 
Development Goals.

 − Adopted 20 ideas from over 100 proposed by 
employees in the first year of InnovAminerals, 
the Group’s innovation initiative.

1.  Prepared in accordance with the GRI reporting standards and ICMM requirements.

REPORTING AND TRANSPARENCY
This section of the Annual Report summarises the Group’s 
sustainability performance. More information is provided in the 
annual Sustainability Report1, which is published separately, 
and the CDP’s carbon and water questionnaires.

Antofagasta is a constituent of the FTSE4Good Index series, 
the STOXX Global ESG Leaders Index and the ECPI Global 
Developed ESG Best-in-Class Equity Index, and has been 
a member of the ICMM since 2014. Its mining division 
is a member of Chile Transparente, the national chapter 
of Transparency International.

55

antofagasta.co.ukSTRATEGIC REPORTSUSTAINABILITY REPORT CONTINUED

SAFETY AND HEALTH

PEOPLE COME FIRST
People come first and their safety 
and health is the Group’s top priority. 
Antofagasta continuously strives to 
improve its performance in all matters that 
could impact its employees, contractors 
and neighbours.

In 2017 Antofagasta achieved its goal of zero fatalities. The Group 
remains fully committed to this goal while continuing to work to 
reduce the number and severity of accidents, which also fell by 18% 
in its mining division during 2017. 

FOCUS ON FATAL RISKS
In line with international best practice the Group’s safety and 
health model is based on fatal risk prevention and self-awareness. 
This applies to the whole workforce, both employees and contractors. 

In 2017 further progress was made in standardising and simplifying 
fatal risk prevention and controls. Antofagasta focuses on 15 fatal 
risks prevented through 72 critical controls. Employees and 
contractors are encouraged to take responsibility for their own and 
their colleagues’ safety through the continuous verification of the 
implementation of ethical controls, leadership, training, awareness 
initiatives, public recognition of safe conduct and the use of the best 
available safety technology. 

REPORTING AND AWARENESS 
Visible leadership is paramount to Antofagasta’s Safety and Health 
Model. The Executive Committee conducts regular onsite safety 
and health reviews verifying that critical controls for fatal risks 
are correctly applied. Top management reviews and challenges 
the investigation of high-potential events and recognises employees 
who display outstanding safe conduct.

Safety performance is reported weekly to the Executive Committee 
and monthly to the Board, and the Sustainability and Stakeholder 
Management Committee reviews any serious safety incidents.

Raising employees and contractors’ awareness of risks and getting 
them fully committed to their own safety and that of their colleagues, 
remains a cultural challenge. Their awareness is reinforced through 
a variety of actions, including intensive onsite supervision, near-miss 
reporting, training, the wide distribution of information about the 
causes of severe accidents, extended safety meetings, public 
recognition of committed workers and increasing collaboration 
with the Safety and Health Committees of workers and managers.

Safety and health induction courses are mandatory for all new 
employees and contractors before they are allowed onsite. Refresher 
workshops on safety policies and procedures are also mandatory and 
regular events are held to discuss lessons from near-miss incidents 
and best safety practices.

Safety and health performance targets account for 5% of 
Antofagasta’s annual performance bonuses.

CONTRACTORS
Antofagasta requires that all contractors apply its standards and 
report contractor’s performance alongside its own.

Ensuring contractors fully comply with Antofagasta’s standards 
remains a major challenge and through 2017 the Group continued to 
help contractors embed its safety framework in their own practices and 
procedures. It did this by using its Corporate Guidelines on Safety and 
Health for Contractors, and providing orientation, training and technical 
support, while closely monitoring compliance through onsite audits.

IN FOCUS: INNOVATION TO IMPROVE SAFETY 
AND PRODUCTIVITY
Equipment maintenance often requires that the power is locked 
out and isolated, a critical control. However, the locking circuit 
breakers are often a long way from the equipment that is being 
maintained, and switching the circuits on and off can account 
for 25–40% of a maintenance shift. In 2016, 22% of the 
Group’s high-potential safety incidents were related to 
problems with isolating power supplies.

The good news is that a mobile power-locking device has 
been developed that has improved maintenance workers’ 
safety and increased productivity. This idea originated from 
a Los Pelambres employee and was turned into reality by 
an international developer.

This is one of our InnovAminerals projects.

56

Antofagasta plc Annual Report 2017OCCUPATIONAL HEALTH STANDARDS
The Group developed 10 Occupational Health Standards using 
the same fatal risks approach, specific controls and regular onsite 
auditing as for safety. Building on the experience of previous years, 
progress was made in assuring legal compliance, completing a health 
baseline, identifying higher exposure groups, raising awareness and 
standardising the health focus across operations.

Six workers with occupational diseases were identified during the 
year, three from Zaldívar and three from FCAB. Of these six cases, 
four are related to work-related stress, one related to altitude 
sickness and one concerns hearing loss.

PERFORMANCE IN 2017
In 2017 Antofagasta achieved its zero fatalities goal and is determined 
to continue with this success. It has also continued to reduce the 
severity and frequency of accidents. During the year near-miss 
reporting increased by 162%. These results confirm the value of 
near-miss reporting, which is one of the pillars of the Corporate 
Safety Model focused on risk prevention and operational control.

Compliance with the Safety and Health Model is audited twice a 
year at each site. Additionally, members of the Group’s Executive 
Committee make monthly visits to the sites specifically to review 
safety and health issues.

Lost Time Injury Frequency Rate (LTIFR)1

Chilean mining industry
Mining division
Transport division
Group

2017
N/A 
1.0
7.3
1.4

All Injury Frequency Rate (AIFR)2

Chilean mining industry
Mining division
Transport division
Group

Number of fatalities

Chilean mining industry
Mining division
Transport division
Group

2017
N/A 
7.4
22.0
8.3

2017
N/A 
–
–
–

2016
1.8
1.2
4.9
1.5

2016
N/A
6.9
13.3
7.3

2016
18
1
1
2

2015
2.0
1.2
10.9
2.0

2015
N/A
6.9
17.8
7.9

2015
16
1
–
1

2014
2.5
1.1
10.3
1.7

2014
N/A
5.0
22.2
6.1

2014
27
5
–
5

2013
2.6
1.1
10.3
1.9

2013
N/A
3.9
17.7
5.1

2013
25
2
–
2

1.  The Lost Time Injury Frequency Rate is the numbers of accidents with lost time 

during the year per million hours worked.

2.  The All Injury Frequency Rate is the total number of accidents during the year per 

million hours worked.

SUSTAINABILITY

57

antofagasta.co.ukSTRATEGIC REPORT 
 
 
SUSTAINABILITY REPORT CONTINUED

EMPLOYEES

ENGAGED EMPLOYEES ARE COMMITTED 
TO BUSINESS GOALS
Antofagasta is committed to the wellbeing, 
motivation and professional development 
of its employees. It seeks to engage them 
through its shared values and an attractive 
offer that enhances the experience of being 
part of the mining group. The Group 
actively manages and develops the talents 
of its employees and strives to maintain 
excellent labour relations.

In 2017 the Group’s average total workforce was approximately 
21,360 people, of which about 6,360 were employees and  
15,000 contractors. 

LABOUR RELATIONS
The Group recognises employees’ rights to union membership 
and collective bargaining. It has ten unions: four at Centinela, three 
at Los Pelambres, two at Zaldívar and one at Antucoya, together 
representing 76% of the total number of employees. In 2017, 
Antofagasta sponsored 30 labour leaders taking a diploma in 
Labour Relations from the Universidad Católica de Chile.

In 2017 labour agreements were negotiated with the unions at Los 
Pelambres, Centinela and Zaldívar. These binding agreements cover 
salaries, shift patterns and employment benefits and are renegotiated 
every three years, in accordance with Chilean legislation. Among 
other provisions, Chilean law limits working hours and forbids both 
child and forced labour.

The Group’s excellent labour relations are based on good working 
conditions, mutual trust and regular dialogue, and have been 
successful in reaching fair labour agreements and avoiding strikes.

58

CONTRACTOR STANDARDS
Antofagasta is committed to ensuring its contractor workers operate 
under the same safety and health standards and management system 
as its own employees. Its contractor companies must comply with 
mandatory corporate standards regarding human rights, business 
integrity, minimum salaries and working conditions, including health 
and life insurance, which must be offered to all their employees. 
Failure to comply can lead to sanction and even contract withdrawal. 
The Group regularly audits its contractors to ensure full compliance 
with these standards.

ENGAGEMENT
One challenge is to keep employees engaged with the organisation 
and aligned with the Group’s business goals. The Human Resources 
Model is designed to attract and retain talented and committed 
employees by offering the opportunity to be part of a growing 
company with strong corporate values. The Group offers a safe work 
environment, good quality accommodation, fair pay and opportunities 
for talent to develop, alongside a healthy work-life balance.

76%of employees are unionisedIn 2017 labour agreements were negotiated with the unions at Los Pelambres, Centinela and Zaldívar.Antofagasta plc Annual Report 2017DEVELOPING TALENT 
Antofagasta has introduced a management system designed to retain 
employees with key talents by providing them with opportunities for 
professional growth. Succession plans are in place for key positions 
and employees in supervisory and managerial positions are offered 
regular training to further develop their leadership skills. The Group’s 
management strongly believes that internal mobility, training and 
professional development opportunities foster engaged employees, 
and 57% of new positions that became available in 2017 were filled 
by internal candidates.

In 2017, Antofagasta invested $3.1 million in training, providing 
an average of 4.8 hours of training per employee per year. 

INCREASING GENDER DIVERSITY
A Diversity and Inclusion Strategy has recently been approved by 
the Board to increase the Group’s capacity to attract and advance 
the progress of women and to encourage the inclusion of people with 
different international experience, training and capabilities. These new 
perspectives and experiences will help the Group develop excellence 
and increase both productivity and engagement.

In 2017 women represented 9% of the mining division’s workforce, 
of whom 58% were supervisors or above and 10% held senior 
management roles. There are two female Board directors and one 
Vice President. 

IN FOCUS: DIVERSITY AND INCLUSION STRATEGY
In December 2017, the Board approved a Diversity and 
Inclusion Strategy with the goal of achieving greater inclusivity 
by 2022 and being an employer of choice. This strategy is based 
on three priorities: increasing gender recognition, expanding 
opportunities for disabled people and attracting employees with 
international experience.

The strategy encourages the development of a respectful working 
environment that promotes collaboration, flexibility and equity 
in a meritocracy without prejudice through the appropriate training 
of managers and employees.

The first steps of the implementation plan include onsite 
workshops at all four mining operations, establishing a baseline 
and monitoring progress.

SUSTAINABILITY

59

antofagasta.co.ukSTRATEGIC REPORTSUSTAINABILITY REPORT CONTINUED

COMMUNITIES

ENGAGING LOCALLY TO CONTRIBUTE 
NATIONALLY
Antofagasta contributes to the 
sustainable development of the regions 
and communities in which it operates, 
creating a shared vision for development 
by engaging in effective, participatory 
and transparent stakeholder dialogue, 
as well as recognising controversies 
and opportunities.

The Group believes the wellbeing of its surrounding communities  
is a direct enabler of its business success, and strives to prevent, 
mitigate and compensate for any adverse impact that its activities  
may have. Antofagasta is convinced its activities bring opportunities 
for national and local development and is committed to building on 
these opportunities.

LONG-TERM ENGAGEMENT AND INVESTMENT
From 2013 the Group made a thorough review of how it engaged  
with the communities impacted by its activities, introducing a radically 
new local engagement framework called Somos Choapa (We Are 
Choapa)1. It is based on a methodology devised to sustain ongoing 
dialogue between the Company, local authorities, neighbours and local 
organisations to address its impact on the local area; and, on how the 
Company can contribute to the sustainable development of the region. 
Participation is a key ingredient of this framework and the first stage 
of the programme is an open invitation to stakeholders to participate 
in a series of regional meetings to discuss local challenges and their 
vision for local development.

As Somos Choapa progresses at each municipality, local development 
visions are translated into a portfolio of projects and programmes  
to be financed through public–private alliances and implemented via 
strategic partnerships.These initiatives are aligned with local priorities 
and contribute to the UN’s Sustainable Development Goals. 

EXTENDING THE PROGRAMME
The Somos Choapa framework includes funding for an integrated 
technical team of professionals from the fields of social sciences, 
architecture and strategic design. This team supports the engagement 
process and the design of projects, ensuring all initiatives carry a 
recognisable watermark of technical excellence, systemic vision  
and adaptation to the local context. The experience was presented  
at Chile Architecture and Urbanism Biennial Exhibition – entitled 
Unpostponable Dialogues – as a leading example of innovation in  
the sustainable collaboration between a company, its surrounding 
communities and local authorities.

By 2017, engagement processes based on Somos Choapa were  
being rolled out by Centinela with its Sierra Gorda community and  
by Antucoya with the municipality of María Elena. The Group has 
named this latter initiative “Dialogues for Development”.

MEASURING PROGRESS
During 2017 Somos Choapa continued working on the definition  
of indicators to measure its progress, developed through a 
participative process combining technical factors with governmental 
requirements and input from beneficiaries. Some of these indicators 
will be used to assess the impact of each community investment 
project and its efficiency. Others will measure the overall contribution 
of the Somos Choapa project portfolio in improving the wellbeing of 
communities according to the UN’s Sustainable Development Goals 
(SDG) parameters. The decision to use SDG indicators reflects 
Antofagasta’s willingness to find common ground with public 
authorities regarding long-term sustainable local development.

1.  Choapa is the name of the province where Los Pelambres is located. It includes 

the municipalities of Salamanca, Illapel, Los Vilos and Canela.

60

Antofagasta plc Annual Report 2017CONFLICT TRANSFORMATION
In May 2016 over 80% of the residents of Pupío, Rincon and 
Caimanes, the three communities near the Mauro tailings dam,  
signed an agreement with Los Pelambres, the Caimanes Agreement, 
ending a ten-year conflict and inaugurating a new era of co-operation. 
This agreement included Los Pelambres’ contribution to a Community 
Development Fund that will finance the most popular projects chosen 
by over 300 residents. This involved a formal transparent selection 
process following ten preparatory meetings to review the whole 
project portfolio.

 − Caimanes residents decided to build a fire station, buy an area for  
a planned police station, purchase equipment for the local health 
clinic, fund repairs to the local church and improve school facilities. 

 − The residents of Rincón chose to build a clubhouse and to repay  

a community debt they had taken on to pay for a collective 
agricultural project.

 − In Pupío, the community chose to install solar panels on their 

houses and to build water storage facilities.

MANAGING SOCIAL RISKS 

WATER SCARCITY 
Water scarcity remains a major community concern in Los 
Pelambres’ area of influence. Besides adopting operating measures 
to preserve water (see page 62) and actively participating in local 
water management initiatives, the Company is leading the public–
private Salamanca Agreement to develop long-term solutions such 
as building a public desalination facility and more irrigation dams.

Ensuring water availability and quality was one of the key issues 
addressed in the Caimanes Agreement. In 2017 the Company began 
sealing the contour channel built around the dam that prevents 
naturally flowing run-off water from reaching the tailings dam below. 
The Company is also covering other channels that carry this water to 
the Pupío stream for use by the community and is building two pools 
for animal drinking water. Lastly, Los Pelambres is collaborating with 
the Rural Drinking Water Committee on a set of projects to improve 
local drinking water facilities.

EMERGENCY PREPAREDNESS
The Group’s tailings dams and other facilities are designed to resist 
extreme weather conditions and severe earthquakes. The Mauro 
tailings dam continued to operate normally after an earthquake 
in September 2015 that reached 8.5 on the Richter scale, and had 
its epicentre only 50 km from the dam wall. 

As legally required, all four of the Group’s mining operations have 
emergency procedures in place, approved by the national mining 
authority, and response plans co-ordinated with public agencies 
and other authorities. These plans include preventive and corrective 
operating measures at each of the sites. At Los Pelambres these 
plans are supplemented with a special emergency communication 
procedure designed jointly with the Caimanes community in order 
to protect neighbours in any emergency situation. This initiative 
included defining a new safety zone, improving early warning and 
evacuation procedures, providing emergency transportation for 
impaired residents to the safety zone, new road signals and a 
sound alarm, and establishing additional procedures to monitor 
the Mauro tailings dam.

SUSTAINABILITY

IN FOCUS: INNOVATION, REGIONAL DIALOGUE 
AND PUBLIC POLICY
Antofagasta is a contributor to public–private efforts to 
ensure Chile remains internationally competitive and becomes 
a centre for highly sustainable mining practices. Maintaining 
mining operations’ social licence to operate is key to achieving 
this. One of the public–private institutions supported by the 
Group, Valor Minero (Mining Value), is developing new 
institutional processes to implement shared value agreements 
and to manage potential conflicts from early-stage projects 
to mine closures. 

This initiative has advanced through a series of dialogues 
at which political authorities, communities, indigenous people, 
NGOs, mining companies, academics and other stakeholders 
have exchanged views and contributed their insights. 
The results will be presented as a Public Mining Policy 
proposal to Chile’s President by mid-2018.

Valor Minero is also organising a pilot regional dialogue in the 
Sierra Gorda community. The aim is to build a shared value 
agreement for the area’s development and a roadmap for both 
public and private contributions, taking a similar approach to 
Antofagasta’s Somos Choapa. Participants include the regional 
presidential representative, Sierra Gorda’s mayor, local 
organisations and the four nearby mines, Centinela 
(Antofagasta), Spence (BHP), Gabriela Mistral (Codelco) 
and Sierra Gorda (KGHM).

10

preparatory meetings to 
review project portfolio

Under the new framework, 
community investment 
priorities come from local 
residents, who remain 
involved until the projects 
are completed, empowering 
project beneficiaries and 
increasing effectiveness 
of the results. 

61

antofagasta.co.ukSTRATEGIC REPORTSUSTAINABILITY REPORT CONTINUED

ENVIRONMENT

THE FUTURE OF SUSTAINABLE MINING
Antofagasta seeks to prevent, mitigate 
and control the impact of its activities 
on the environment. The Group remains 
committed to achieving sustainable 
and efficient use of natural resources 
throughout the mining cycle, from 
exploration to site closure and beyond.

The Group’s environmental stewardship priorities remain:

1.  Ensuring compliance with all of its include RCA1 commitments 

under its operating permits.

2. Ensuring all key environmental risk controls are in place.

3. Enabling its projects through the early identification and 

assessment of environmental risks to reduce, mitigate and/or 
compensate for their impact.

ENVIRONMENTAL MANAGEMENT
In Chile, mining projects are subject to strict environmental and 
social impact assessment by the national environmental authority, 
which includes formal consultation with the local communities. 
If the project is approved, the impact prevention, mitigation and 
compensation measures proposed as part of the application become 
legally binding commitments set out as RCAs in the operating permit. 
The Environmental Superintendency regularly reviews these 
commitments and non-compliance can result in severe fines 
and even revocation of the operating permits.

Antofagasta’s mining operations have a total of 54 RCAs listing some 
6,500 environmental commitments. These commitments are now 
centrally administered through Antofagasta’s updated Environmental 
Management System, which is similar to the Safety System and 
focuses on key risk prevention, specific controls, audits and the 
reporting of near-miss incidents.

In 2017, Los Pelambres submitted the Environmental Impact 
Assessment (EIA) for its Incremental Expansion Project, and this 
was approved early in 2018.

1.  Resoluciones de Calificación Ambiental (Environmental Qualification Resolutions).

62

ENVIRONMENTAL COMPLIANCE
In October 2016 the Environmental Superintendency raised charges 
against Los Pelambres for delayed or incomplete compliance with 
some of its RCA commitments. The Company reacted by conducting 
an in-depth review of its internal processes to understand how these 
compliance gaps had occurred and to accelerate implementation of 
the new corporate Environmental Management System. The review 
found that some smaller and older commitments had been missed by 
the original control system; interpretations of other commitments had 
evolved over the years, and audit standards had changed.

Towards the end of 2017 the Environmental Superintendency 
accepted the compliance programme proposed for Los Pelambres 
and suspended the charges raised in 2016.

The Group had no significant operating incidents with environmental 
impact in 2017.

WATER MANAGEMENT
The Group pioneered the use of raw sea water in its mining 
operations in the 1990s and currently 45% of its total water 
consumption comes from the Pacific Ocean. The main loss of water 
is through evaporation and no water is discharged into waterways. 
The Group has achieved a high reuse rate, which varies from 
76–93%. Residual water remains inside the tailings dams. In 2017 
Antofagasta consumed 36.5 million m3 of continental water.

IN FOCUS: ENSURING ENVIRONMENTAL COMPLIANCE
Antofagasta’s updated Environmental Management System 
is based on its successful corporate Safety System. Both focus 
on preventing key risks, assigning each risk to regularly audited 
specific controls and encouraging the reporting of near-miss 
incidents. Executive-led onsite verification now considers 
environmental matters as well as safety. 

The new Environmental Management System’s implementation 
began with a review of the four operations’ RCAs, applying 
one common standard, and by the end of 2017 some 6,500 
commitments within the RCAs had been fully reviewed. Their 
descriptions and controls were then standardised for the first 
time, and their respective compliance conditions were assessed 
using the Environmental Superintendency’s audit criteria.

Antofagasta plc Annual Report 2017SUSTAINABILITY

In early 2018 Antofagasta set its first carbon reduction target – 
to reduce forecast CO2 emissions over the period 2018 to 2022 
by 300,000 tonnes – which it will achieve by implementing projects 
that have been selected after two years of studies.

The Group’s emission reduction will also benefit from the 
interconnection of Chile’s two main power grids that should be 
completed in 2018. Interconnection will increase the proportion of 
renewable energy available in the north of the country and so, over 
time reduce, the carbon intensity of Centinela, Antucoya and Zaldívar.

IN FOCUS: TOWARDS ZERO WASTE MINING
Mining the raw material the world needs to produce computers, 
circuitry, wiring, batteries and structural components can result 
in dangerous by-products. Advancing towards Zero-Waste 
mining is a significant challenge and a tremendous opportunity 
for innovation.

The Chilean Mining Consortium is a public-private alliance 
between the country’s four leading copper operators and Corfo 
(Chile’s innovation agency). It is committed to making Chile 
a global innovation hub for sustainable and inclusive mining.

In 2017 the Consortium sponsored the XPRIZE Grand 
Challenge inviting innovative solutions to the challenge of Zero 
Waste Mining. The prize will be awarded to a “moonshot” idea 
or technology aiming to extract critical metals, minerals 
and rare earth elements without solvents, strip-mining or 
stockpiles, ensuring water contamination ceases to be a threat.

See more at: 
www.xprize.org/visioneers/teams/zero-waste-mining

Water quantity and quality are monitored by national authorities, 
and jointly by local communities and the mining operations, 
to improve transparency.

Los Pelambres uses continental water from the Choapa river, which 
is a water-stressed zone. This is why the Company’s Incremental 
Expansion project, approved in February by environmental authorities, 
includes a desalination plant to supplement the mine’s demand in 
case of a drought. Also, the Company is an active member of the 
public–private alliance in charge of finding long-term solutions 
to local water shortages.

MINING WASTE
Mining waste takes the form of waste rock, spent ore and tailings, 
which are left over after the valuable portion of the ore has been 
separated from the uneconomic portion. As Antucoya, Zaldívar and 
Centinela Cathodes use leaching to produce copper, their waste goes 
to fully-permitted spent ore dumps. Los Pelambres and Centinela 
Concentrates use flotation and deposit their mining waste in licensed 
tailings storage facilities.

Centinela was the first large-scale copper mine in the world to use 
thickened tailings technology that is more water-efficient, makes 
tailings more stable and offers better dust control. Its expansion 
project will also use thickened tailings.

CLOSURE PLANNING
Antofagasta has no operations close to closure. The nearest is 
Zaldívar, but the Group is working on plans to extend its life.

Chilean legislation requires mining operations to have comprehensive 
closure plans approved by Sernageomin (the National Geology and 
Mining Service). Approved plans are required before environmental 
approval of new projects is granted and must be updated at least 
every five years while the mine is operating. Closure plans focus on 
preventing pollution and ensuring tailings dams’ physical and chemical 
stability. They also consider the funding of closure activities and the 
financial provisions for its implementation.

CLIMATE CHANGE
The effects of climate change can be observed in northern and 
central Chile through higher than average temperatures and 
reduced rainfall.

One of Antofagasta’s priorities is to reduce the intensity rate of GHG 
emissions arising from the Group’s growth by investing in renewable 
energy sources. Renewables now account for 21% of the Group’s 
total energy consumption.

In 2016 the Group designed an integrated climate change strategy 
based on:

 − identifying risks and opportunities

 − encouraging innovation for cleaner and more efficient energy 

sourcing 

 − committing to measuring progress and transparent reporting 

under CDP

 − setting an obligation to mitigate GHG emissions.

63

antofagasta.co.ukSTRATEGIC REPORTSUSTAINABILITY REPORT CONTINUED

ENVIRONMENT CONTINUED

C02 emissions in 2017 (tonnes of C02 equivalent)

Mining division

Scope 1
Direct emissions

Scope 2
Indirect emissions

Total emissions

CO2 emissions intensity

Los Pelambres
Centinela
Antucoya
Zaldívar
Corporate offices
Total for mining division

2017
195,362 
334,019 
177,051 
147,985 
212 
854,628 

2016
172,227 
358,134 
99,918 
165,590 
124
795,994 

2017
500,040 
969,598 
243,060 
357,932 
1,306 

2016
665,292 
1,299,655 
299,442 
530,279 
1,334 
2,071,937  2,000,010  2,926,565  2,796,004 

2017
665,402 
1,303,617 
420,111 
505,917 
1,518 

2016
493,065 
941,521 
199,524 
364,689 
1,210

2017
2.02 
5.71 
5.22 
4.89 
– 
3.87 

2016
1.87
5.73 
4.52 
5.13 
–
3.67

1.  Total CO2 emissions per tonne of fine copper produced (Scopes 1 and 2).

SUSTAINABLE ENERGY 
Energy represents around 19% of the mining division’s total cash 
costs. Antofagasta is already very energy-efficient and has succeeded 
in securing renewable energy for Los Pelambres from several wind 
and solar sources. In 2017 renewables accounted for 54% of Los 
Pelambres’ total energy requirement, and 21% of the Group’s. 

In 2018 when Chile’s two main electricity power grids’ interconnection  
is completed, renewable energy will become available to supply 
mining operations in northern Chile where Centinela, Antucoya and 
Zaldívar are located. A decrease of their emissions intensity is to 
be expected when their PPAs expire, the first of which is in 2020.

BIODIVERSITY AND HERITAGE
The Group has no operations in protected areas. Its biodiversity 
challenges are mainly at Los Pelambres as it is at the head of the 
Choapa Valley, which is an area rich in biodiversity. Since it started 
operating the Company has undertaken several biodiversity projects 
including the restoration of a coastal wetland recognised under the 
Ramsar Convention that had become an illegal waste dump, and the 
protection of Santa Ines, a rare temperate relict rainforest. In 2017 
Los Pelambres also obtained government recognition for two new 
biodiversity areas already under its protection, the Llau Llau ravine 
and Palmas de Monte Aranda, one of the last remaining Chilean palm 
forests. Los Pelambres now protects over 25,000 hectares of high 
conservation value land.

The Choapa Valley is also rich in archaeological remains of the ancient 
cultures that inhabited this area, about which there is still much to be 
discovered. Some of these remains had to be rescued and moved 
when the Mauro tailings dam was built. These items are exhibited in 
the Parque Rupestre Archaeological Centre, a large openair museum, 
and the Campesina Cultural Centre, which is dedicated to preserving 
the cultural heritage of the area. 

64

Antofagasta set 
its first carbon 
emissions 
reduction target

Two new nature 
conservancy areas 
were established 
in Chile during 
2017 and placed 
under private 
conservation by 
Los Pelambres

Antofagasta has 
no significant 
gaseous 
emissions other 
than GHG

Antofagasta plc Annual Report 2017SUSTAINABILITY 
GOVERNANCE

Antofagasta believes in developing 
effective, accountable and transparent 
institutions. To this end, it has established 
guidelines and internal regulations that set 
out the Group’s commitment to conduct its 
business responsibly.

Antofagasta wants to be known for having honest and transparent 
business practices that respect human rights and the law. 

In April 2017, Antofagasta’s Board approved a new Sustainability 
Policy completely updating its previous one from 2008.

BOARD INVOLVEMENT
Antofagasta’s Board is supported by five committees including a 
Sustainability and Stakeholder Management Committee that met eight 
times in 2017. The Vice President of Corporate Affairs and Sustainability 
oversees the Group’s safety, environmental, communications and public 
affairs, and the mining operations and the transport division each have 
safety and health, and environmental managers.

Sustainability targets, related to safety, organisational capabilities, 
community relations and environmental compliance account for 25% 
of the Group’s annual performance goals and impact the bonuses 
of every employee.

Further information on the Board and its Sustainability and 
Stakeholder Management Committee can be found on pages 96 to 97. 

BUSINESS INTEGRITY
The Group’s Code of Ethics guidelines are mandatory for the 
Directors, executives, employees and contractors. Its Crime 
Prevention Handbook describes conflicts of interest and establishes 
an anonymous whistleblowing procedure. In 2017, an internal 
communications campaign encouraged employees to use this to 
clarify doubts and report inappropriate behaviour. All employees must 
complete a declaration to prevent potential conflicts of interest and 
participate in compliance workshops. Contractor companies are also 
trained in compliance standards and are expected to report 
unethical behaviour.

Further information on the Group’s Code of Ethics and Crime 
Prevention Handbook can be found on page 18.

PAYMENTS TO GOVERNMENTS
Antofagasta makes payments to governments relating to activities 
involving the exploration, discovery, development and extraction 
of minerals. In June 2017, the Group published its second report 
detailing its mining division’s payments to governments for the 
year ended 31 December 2016. These payments were primarily  
taxes paid to the Chilean government, and mineral licence fees. 
In 2016 these payments totalled $74.1 million, of which 99.7% were 
paid in Chile. The full report is available on the Company’s website 
at www.antofagasta.co.uk.

Chilean law allows political donations subject to certain requirements, 
but Antofagasta made no donations in 2017. However, it often 
contributes financing for projects benefiting local communities 
in alliance with the local municipalities and the government. These 
contributions are regulated by some specific laws and reviewed 
by the Chilean Internal Revenue Service.

COMPLIANCE 
Antofagasta’s risk management and compliance function is 
responsible for the corporate compliance programme that is overseen 
by the Board’s Audit and Risk Committee.

Group suppliers are required to provide specific information 
including their safety, anti-corruption, antitrust, modern slaveryand 
other procedures. 
+ Further information can be found in the Risk Management section 

on page 18

HUMAN RIGHTS 
Antofagasta respects and supports human rights by:

 − providing high safety and health standards, fair wages and good 

labour relations

 − preventing discrimination, harassment and bullying

 − complying with the UK Modern Slavery Act

 − providing good-quality accommodation, services and facilities and 

opportunities for training and development

 − preventing corruption and malpractice

 − preventing or mitigating adverse environmental and social impacts

 − respecting communities’ rights, culture and heritage

 − engaging in dialogue throughout the mining lifecycle from 

exploration to closure

 − responding to grievances

 − supporting community development. 

In 2017 the Group adopted a Diversity and Inclusion Strategy 
to provide female employees with more career opportunities and 
to become a more inclusive employer while fostering diversity.

Only the Zaldívar operation needs to engage with an indigenous 
community who live in Peine, 100 km away from the mine. Relations 
with the community are good and are conducted in accordance with 
the provisions of the ILO 169 Covenant, ICMM Guidelines and 
Antofagasta’s Sustainability Policy.

Corporate due diligence of suppliers’ legal compliance includes key 
human rights issues such as general working conditions, preventing 
child labour and preventing discrimination, harassment and other 
abuses. These are regularly audited by each company and also 
by the corporate centre.

MODERN SLAVERY ACT
In compliance with the UK’s Modern Slavery Act 2015 the Group 
has published a statement setting out the steps taken to ensure 
that slavery and human trafficking are not occurring in its supply 
chain or in any part of its business. This statement is available at 
www.antofagasta.co.uk.

The Strategic Report has been approved by the Board 
and signed on its behalf by:

Jean-Paul Luksic 
Chairman 
12 March 2017

Ollie Oliveira 
Senior Independent  
Director

65

antofagasta.co.ukSTRATEGIC REPORTCOMMITTED TO  
STRONG AND  
EFFECTIVE GOVERNANCE

The Board of Antofagasta plc is responsible for the  
long-term success of the Group.

The Board has established strong and effective governance 
structures which clearly define roles and responsibilities 
and promote constructive challenge.

GOVERNANCE
Governance at a glance

Leadership

Chairman’s introduction 

Senior Independent Director’s 
introduction 
Group governance overview

Directors’ biographies

Board balance and skills

Roles in the Boardroom

Executive Committee  
members’ biographies

Effectiveness

Board activities

Board and Committee 
information flows

Accountability

Introduction to the Committees

Nomination and Governance 
Committee report

68

70

72

74

76

78

79

80

82

83

84

86

Board effectiveness reviews

Professional development

Audit and Risk Committee report

Sustainability and Stakeholder 
Management Committee report
Stakeholder engagement
Projects Committee report

Remuneration

Remuneration and Talent 
Management Committee report
Committee Chairman’s 
introduction
Remuneration at a glance

2017 Directors’  
Remuneration Report
2017 Executive  
Remuneration Report
Summary of 2017 Directors’ 
Remuneration Policy

Relations with shareholders

Directors’ Report

Statement of Directors’ 
Responsibilities

88

89

90

96

98
100

102

103

105

106

109

118

121

123

125

 
GOVERNANCE

GOVERNANCE 
AT A GLANCE

Although the Group has maintained a London listing since 1888, 
it is primarily a Chilean copper mining group with its corporate 
headquarters, senior management team and all of its operating assets 
located there.

Accordingly, it is critical that the Group’s corporate governance 
structure enables it to operate successfully in Chile. That said, it is also 
important to the Group to ensure that this structure follows international 
best practice, and the Group is proud that it complies fully with the UK 
Corporate Governance Code. In certain respects, however, the Group’s 
approach differs from that typically seen in UK headquartered 
companies; where this is the case, it is explained in this report.

As at the date of this report the Board has 11 Directors, comprising 
a Non-Executive Chairman and ten other Non-Executive Directors, 
five of whom are independent.

The Group’s CEO, Iván Arriagada, is not a director. This is consistent 
with practice in Chile where local law prohibits CEOs of public 
companies from being directors of those companies.

Despite this, interaction between the Board and executive 
management is as you would expect between Non-Executive 
Directors and management in a typical UK-listed company. The CEO 
and CFO are invited to attend all Board meetings, the CEO is also 
invited to attend all Board Committee meetings and there is regular 
formal and informal dialogue between management and the Board.

The Board considers that there are considerable benefits associated 
with having a Board comprising exclusively Non-Executive Directors. 

Not only does it provide a broad range of perspectives, but also 
encourages robust debate with, and independent oversight of, 
the Group’s executive management.

Although the UK’s executive remuneration reporting regulations only 
apply to executive directors, the CEO’s remuneration is voluntarily 
disclosed in accordance with the regulations as if he were a member 
of the Board. Further details are set out in the 2017 Executive 
Remuneration Report on pages 109 to 117.

The Company has had a controlling shareholder since 1980. Members 
of the Luksic family are interested in the E. Abaroa Foundation, which 
is a controlling shareholder of the Company under the Listing Rules. 
Further details of the Company’s substantial shareholders are set out 
in the Directors’ Report on page 124.

Members of the Luksic family are on the Board and on the Executive 
Committee. Jean-Paul Luksic is Non-Executive Chairman of the 
Company, his brother Andrónico Luksic C is a Non- Executive Director 
and his nephew Andrónico Luksic L is Vice President of Development.

There is a relationship agreement between the Company and its 
controlling shareholder, and the Group has in place processes and 
procedures to ensure that any potential conflicts of interest and 
related party transactions are transparently managed as explained 
on page 73. 

The Board is also structured to ensure that there is limited scope for an 
individual or small group of individuals to dominate its decision-making, 
as demonstrated throughout this Corporate Governance Report.

UK CORPORATE GOVERNANCE CODE COMPLIANCE STATEMENT
The UK Corporate Governance Code issued by the Financial Reporting Council in April 2016 (available on the Financial Reporting Council 
website at www.frc.org.uk) sets out the governance principles and provisions that applied to the Company during the 2017 financial year. 

The Company complied with all of the detailed provisions of the Code in 2017. At the time of Jean-Paul Luksic’s appointment as Chairman in 
2004, he was not considered independent as he had previously been CEO of Antofagasta Minerals SA. The Company’s non-compliance with 
the relevant provisions of the July 2003 Combined Code (which was the forerunner of the Corporate Governance Code) was explained in the 
Statement of Compliance in the Company’s Annual Report.

The Code is not a rigid set of rules. It consists of principles (main and supporting) and provisions. The Listing Rules require companies to 
apply the main principles and report to shareholders on how they have done so. 

This Corporate Governance Report is structured according to the principles in the Code and a more detailed summary of key disclosures 
against these principles is as follows: 

LEADERSHIP

The role of the Board
 − The Company is headed by an effective 

Board which is collectively responsible for 
the Company’s long-term success as 
shown throughout this Corporate 
Governance Report

 − The Board reaffirmed the Group’s values 

during the year as explained in the 
Chairman’s introduction – page 71 

 − An overview of how the Board ensures 

that its obligations to shareholders are met 
is described throughout this Corporate 
Governance Report and further details on 
how the Board listens to and engages with 
stakeholders is set out in the Sustainability 
and Stakeholder Management Committee 
report – pages 96 to 99

68

Division of responsibilities
 − There is a clear division of responsibilities 
between the Chairman and CEO – page 79 

 − The division of responsibilities between 
the Chairman, the CEO and the Senior 
Independent Director are recorded in 
writing and have been approved by the 
Board

The Chairman
 − The Chairman is responsible for leadership 
of the Board, and his responsibilities are 
set out on page 79

 − The Chairman is responsible for setting the 

Board’s agenda and ensuring that 
Directors receive accurate, timely and 
clear information – page 83

 − The roles of the Board and the Board 
Committees are recorded in the  
Schedule of Matters Reserved for the 
Board and Terms of Reference for each  
of the Board’s Committees, which are 
available on the Company’s website at  
www.antofagasta.co.uk

Non-Executive Directors
 − The Non-Executive Directors 

constructively challenge and help develop 
proposals on strategy – page 79 

Antofagasta plc Annual Report 2017EFFECTIVENESS

Composition of the Board
 − The Board has 11 Directors, comprising 

Appointments to the Board
 − There is a formal and transparent 

a Non-Executive Chairman and ten other 
Non-Executive Directors, five of whom 
are independent

 − All members of the Audit and Risk and 
Remuneration and Talent Management 
Committees are independent and two 
of the three Nomination and Governance 
Committee members are independent

 − The Board comprises Directors with a 

broad and complementary set of technical 
skills, educational and professional 
experience, nationalities, personalities, 
cultures and perspectives – page 78

 − The Directors’ biographies provide further 
information on their experience – pages 
76 and 77

 − The Roles in the Boardroom diagram 

shows participation in Board discussions 
and deliberations – page 79

procedure for the identification and 
appointment of new Directors – page 87

Commitment
 − All Directors have confirmed they are 
able to allocate sufficient time to meet 
the expectations of their role 

 − Other significant commitments are 

disclosed to the Board when they arise 
– pages 73 and 124

 − Time commitment is considered as part of 
the Board effectiveness review and when 
electing and re-electing Directors

Development
 − New Directors receive a thorough 

induction on joining the Board – page 89

 − Directors are regularly updated and as a 
minimum, receive an annual briefing on 
legal, regulatory and other developments 
that are relevant to directors of UK-listed 
companies – page 89

Information and support
 − The Board is provided with information 
in a form and of a quality appropriate to 
discharge its duties – page 83

 − The Board has access to independent 

professional advice – page 89

 − The Board is regularly updated on the 

Group’s performance between scheduled 
Board meetings – page 83

Evaluation
 − An externally-facilitated full Board 

effectiveness review commenced in 2016 
and concluded in 2017 – page 88

Re-election
 − All Directors stand for annual re-election

ACCOUNTABILITY

REMUNERATION

RELATIONS WITH SHAREHOLDERS

The level and structure of remuneration
 − The Company has no executive directors 

Dialogue with shareholders
 − The Company attended nearly 600 

but voluntarily discloses the CEO’s 
remuneration, which includes transparent, 
stretching and rigorously applied 
performance-related elements – pages 
102 to 117

meetings with investors and potential 
investors in the year. The Chairman and 
Senior Independent Director were also 
available to meet with shareholders 
– pages 121 to 122

Financial and business reporting
 − The Board has presented this Annual 
Report, which is fair, balanced and 
understandable – page 125

 − Auditor’s report – pages 128 to 132

 − Business model description – pages 

26 and 27

 − Going concern statement – page 18

Risk management and internal control
 − Robust assessment of principal risks 

– pages 19 to 23

 − Effectiveness of risk management and 

internal control systems – pages 16 and 
17 and 93 and 94

 − Viability statement – page 18

own remuneration

Audit Committee and auditors
 − Three out of the four Audit and Risk 
Committee members are considered 
to have recent and relevant financial 
experience

 − Whistleblowing policy – page 95

 − Internal audit function – page 93

Procedure
 − The Directors’ Remuneration Policy was 
approved by shareholders at the 2017 
AGM – pages 118 to 120

 − The procedure for setting policies on 
executive remuneration is voluntarily 
disclosed – pages 102 to 117

 − No Director is involved in setting his or her 

Constructive use of general meetings
 − The Company held an accessible AGM 
in central London with voting on a poll, 
separate resolutions and proxy voting 
(for, against or withheld)

 − All Directors attended the meeting and 
Committee Chairmen were available 
to answer questions

 − Notice was sent out at least 20 working 

days before the meeting

69

antofagasta.co.ukGOVERNANCELEADERSHIP: CHAIRMAN’S INTRODUCTION

STRONG AND 
EFFECTIVE GOVERNANCE

“Strong and effective governance is 
essential to the long‑term success of 
our Group. Our governance structures 
are designed to enable us to focus on 
the matters and issues that will shape 
our future.”

Jean-Paul Luksic, Chairman

INTRODUCTION
There were a number of important changes to the Group’s 
governance structures in advance of the 2017 AGM, including  
the appointment of independent Non-Executive Director  
Francisca Castro, changes to the composition and Chairmanships  
of Board Committees and the succession of Ollie Oliveira to the role  
of Senior Independent Director.

We were pleased that we received strong (>96%) support from 
shareholders for each of the resolutions proposed at the 2017 AGM.

There have been no further changes to the composition of the  
Board and its Committees since 1 January 2017 and we continue 
to fully comply with the Corporate Governance Code. 

The Board and Committees have been responsible for pursuing  
and overseeing a number of important developments during the year, 
which are highlighted throughout this Corporate Governance Report, 
a selection of which I highlight is this letter.

RISK AND RISK APPETITE
The changes in the membership of the Committees which took place 
on 1 January 2017 means at least one member of the Audit and Risk 
Committee serves on each of the other Board Committees and the 
Chairman of the Sustainability and Stakeholder Management 
Committee sits on the Audit and Risk Committee. 

This overlap is designed to enable the Audit and Risk Committee 
to comprehensively consider the risks faced by the Group and 
to enable further constructive challenge of the analysis and 
management of the Group’s risks.

The Audit and Risk Committee now holds at least one meeting each 
year dedicated entirely to risk management. The first such session 
was held in June 2017. The main focus of this meeting was to 
consider the most relevant materialised risks at each of the Group’s 
operations over the past 12 months, the current analysis of key risks 
and mitigation activities, and the expected evolution of those key risks 
over the next 12 months.

70

Antofagasta plc Annual Report 2017We are also engaged in a process to update our assessment of the 
Group’s risk appetite. This is being facilitated by the Group’s risk 
management function, with support from external advisers. The risks 
facing the Group are constantly evolving, and our approach and 
attitude towards those risks must be equally dynamic. Accordingly, it is 
important to ensure that the Group’s risk appetite and management’s 
evaluation and attitude in respect of those risks remain current.

REVIEWING AND EMBEDDING OUR CULTURE
During 2017, a management committee, led by our CEO, was 
established to design and implement a cultural reinforcement process.

The committee oversaw a critical review of the Group’s charter 
of values and the development of behavioural guidelines, which set 
out actions aligned with these values. 

Further work is under way, with input from employees, to assist 
in refining the Group’s purpose and to ensure the Group’s values 
and culture are adopted across all levels of the organisation.

The Board actively set the tone for this process and provided 
guidance to the committee as part of a dedicated session at the 
Board’s strategy day in June. Progress since then has been overseen 
by the Remuneration and Talent Management Committee and final 
actions will be reported to the Board during 2018.

DIVERSITY AND INCLUSION
We have a diverse Board comprising Directors with a broad spectrum 
of complementary skills, personalities and competencies. The Board 
believes in the benefits of diversity throughout the Group, not just at 
Board level, and that more diverse companies are able to attract the 
best talent and achieve stronger, more reliable overall performance. 

The Company has recently completed an assessment of the maturity 
of the Group’s diversity and inclusion model, and will be implementing 
definitive steps to improve further in this area during 2018. Progress 
will once again be measured and assessed and included as a target 
within the Group’s 2018 Annual Bonus Plan. 

The Board fully supports the objectives of the diversity and inclusion 
programme and the Remuneration and Talent Management 
Committee will receive periodic updates on progress and ultimately 
determine how successfully the programme performed in its 
assessment of Group performance under the Annual Bonus Plan, 
during the course of 2018.

SUCCESSION PLANNING AND EXECUTIVE REMUNERATION
The Nomination and Governance Committee is responsible for 
succession planning for the Board and the CEO and reviewed these 
succession plans during the year, as explained in more detail on 
pages 86 and 87.

The Remuneration and Talent Management Committee oversees 
executive talent management and succession planning for executives 
reporting into the CEO and below. It conducted a detailed review 
and update to the succession plans for each of the members of 
the Executive Committee (excluding the CEO) in 2017, identifying 
candidates at different stages of readiness in the talent pipeline to fill 
roles in case of unexpected departures and to identify and define 
development goals for these employees.

The Committee also commissioned a fundamental review of the 
Group’s executive remuneration structures during 2017 with the 
aim of simplifying the Annual Bonus and Long Term Incentive Plans, 
enhancing the alignment between executive remuneration and 
shareholder returns and incorporating flexibility to allow the Group 
to react to significant changes that may arise within the Group 
or externally. 

This process has involved market analysis, Board and management 
interviews, and workshops to provide feedback and further refine 
these proposals. As a consequence of this work, the number of 
measured performance criteria across both incentive programmes 
has been reduced from 22 to 14.

STAKEHOLDER ENGAGEMENT
Mining is a long-term business and timescales often run into decades. 
Our relationships with stakeholders are central to our long-term 
success. The Group’s governance structures include a network of 
arrangements to ensure that the views and interests of stakeholders 
are represented in the Boardroom and considered as part of the 
Board’s deliberations. A further explanation of these arrangements 
is set out in the Sustainability and Stakeholder Management Report 
on pages 98 and 99.

Along with fellow Directors, I regularly visit the Group’s operations 
and projects to understand first-hand the realities and challenges that 
exist on site. Interactions during these visits provide us with a closer 
understanding of the topics that are important for our workforce and 
other stakeholders and we will continue to prioritise visits to the 
Group’s operations during 2018.

As always, I welcome questions or comments from shareholders  
at the Annual General Meeting.

Jean-Paul Luksic
Chairman

71

antofagasta.co.ukGOVERNANCELEADERSHIP: SENIOR INDEPENDENT DIRECTOR’S INTRODUCTION

SUPPORTING 
KEY DECISIONS

“Providing an alternative channel  
of communication to the Chairman  
and the Board allows me to contribute  
to the range of views and perspectives 
to which the Board has access when 
making decisions.”

Ollie Oliveira, Senior Independent Director

Q. What are your responsibilities as Senior Independent 

Director?

It is my responsibility to support the Chairman on a number of levels. 
A major part is to ensure that he has a direct channel of 
communication to understand the issues that are especially important 
to the Board’s independent Non-Executive Directors and to the 
Company’s shareholders.

I am based in Europe which allows me to keep in touch with 
shareholders, directors at other UK-listed companies and advisers, 
to ensure that the Chairman, the Board and the Group as a whole 
receive independent and objective feedback and challenge.

Q. What impact does the controlling shareholding have  

on Company decisions?

The Company has had a controlling shareholder for almost 40 years 
and the controlling shareholder has demonstrated an excellent track 
record over that period.

As an Independent Director and now as the Senior Independent 
Director, I have had a number of meetings over the years with 
shareholders at which the role of the controlling shareholder has 
been discussed. As set out in more detail on pages 73 and 124, 
the controlling shareholder is the E. Abaroa Foundation, in which 
members of the Luksic family are interested.

The consensus view has been that the substantial controlling interest 
is regarded as a positive, with shareholders comfortable in aligning 
their interests with those of the controlling shareholder, taking 
advantage of its understanding of the copper price cycle and market 
fundamentals, its longer term vision of the industry, and its well-
known conservative operating, financing and growth strategy.

This support is – of course – always given on condition of being 
assured of the continuation of the current corporate governance 
framework which rigorously protects the interests of all shareholders.

I and all the Independent Directors place a strong emphasis on 
maintaining this governance and protection regime. We guard this 
independence and preside over a framework and processes that go 
beyond the regulatory norm. We are invariably joined by the other 
Directors who – like the Independent Directors – bring their own 
perspectives and opinions.

The controlling shareholder, and the members of the Luksic family 
who serve on the Board (including the Chairman), are not just 
supportive of this framework but actively encourage the Independent 
Directors to provide that independent input and challenge which we 
all know proves indispensable in Board decision-making.

What follows in this report is a more detailed description of this 
framework and the checks and balances it contains.

Ollie Oliveira
Senior Independent Director

72

Antofagasta plc Annual Report 2017RELATIONSHIP AGREEMENT
The E. Abaroa Foundation (“Abaroa”) is a controlling shareholder of 
the Company under the Listing Rules and certain other shareholders 
of the Company (including Aureberg Establishment) are also treated 
as controlling shareholders. Details of the Company’s substantial 
shareholders are set out on page 124.

In 2014 the Company entered into relationship agreements in respect 
of each controlling shareholder, which contain the mandatory 
independence provisions required by the Listing Rules. The Company 
has complied with, and, so far as the Directors are aware, each 
controlling shareholder and its associates (including Metalinvest 
Establishment and Kupferberg Establishment) has complied, with 
the mandatory independence provisions at all times during 2017.

RELATED PARTY TRANSACTIONS
Certain related party transactions outside the ordinary course of 
business must be subject to independent assessment and approval. 
The Company has for many years also presented all such related 
party transactions (regardless of its size) between the Company 
and the controlling shareholder or its associates to a committee of 
Directors independent from the controlling shareholder, to support 
the negotiation process and ultimately to make an assessment as 
to whether the Company should enter into that transaction. In most 
cases, transactions of this nature will also be subject to independent 
review by the third-party shareholders in each of the Group’s mining 
operating companies.

Any other proposed related party transaction over $25 million, 
whether or not in the ordinary course of business, is also tabled for 
Board approval. If applicable, any Director with a potential conflict 
or connection with the related party will not take part in the decision 
on that transaction.

RELATED PARTY GOVERNANCE IN PRACTICE
There are a number of checks and balances which ensure that there is full transparency in the way related party transactions are dealt with 
by the Board. The following diagram summarises the approach taken to identify and manage related party transactions and actual or potential 
conflicts of interest.

IDENTIFYING DIRECTORS’ INTERESTS

Process
Monitoring of 
Directors’ interests

  How this is managed

If a Director has an interest in any other company, the Board will normally consider 
that interest under its arrangements for authorising conflicts of interest under section 
175 of the Companies Act.

  Responsibility
Directors

+ Further details on this process are set out on page 124

MANAGING A RELATED PARTY TRANSACTION

Proposed 
transaction

Process
Contract negotiation 
and verification

Process
Independent  
Director approval

  Ongoing monitoring of Directors’ interests and related parties of the Company 

  Responsibility

provides the information to determine if a related party approval is required for a 
proposed transaction.

  How this is managed

The Executive Committee will seek to ensure that the best possible terms are achieved 
for a proposed transaction and that they are verified by industry benchmarking reports 
or independent third-party valuation/assessment.

If the potential transaction is between the Group and the controlling shareholder or 
its associates, a committee of Directors independent from the controlling shareholder 
and its associates is formed, to oversee and support management with this process 
and to ensure that the Relationship Agreement is complied with. 

  How this is managed

Potential related party transactions outside the ordinary course of business that 
involve the controlling shareholder or its associates are approved by a committee 
of Independent Directors. 

All other potential related party transactions over $25 million, whether or not in the 
ordinary course of business, are approved by the Board and if applicable, any Director 
with a potential conflict or connection with the related party will not take part in the 
decision on that transaction. Transactions within the ordinary course of business 
which are below $25 million require approval of the relevant subsidiary board.

Company Secretary, 
Antofagasta Group 
management and the 
Executive Committee

  Responsibility

Antofagasta Group 
management and 
Executive Committee 
and, if involving the 
controlling 
shareholder, 
Independent Directors

  Responsibility
Independent
Directors

73

antofagasta.co.ukGOVERNANCE 
 
 
LEADERSHIP: BOARD OF DIRECTORS

GROUP GOVERNANCE OVERVIEW 

ANTOFAGASTA PLC BOARD

BOARD COMMITTEES

Nomination 
and 
Governance 

Audit 
and Risk 

Sustainability 
and 
Stakeholder 
Management 

Projects 

Remuneration 
and Talent 
Management 

The Board is assisted in the fulfilment of its responsibilities by  
five Board Committees. The Board has delegated authority to these 
Committees to perform certain activities as set out in their terms  
of reference.

The Chairman of each Committee reports to the Board following  
each Committee meeting, allowing the Board to understand and,  
if necessary, discuss matters considered in detail and to consider 
the Committee’s recommendations.

The terms of reference for each Committee are available on the 
Company’s website at www.antofagasta.co.uk.

KEY RESPONSIBILITIES
The key responsibilities of each Committee are set out on pages 
84 and 85.
+ See pages 84 to 117 for an overview of the Committees’ activities during  

the year

ANTOFAGASTA PLC BOARD
The Board is collectively responsible for the long-term success of  
the Group. It is responsible for its leadership and strategic direction, 
for the oversight of the Group’s performance, its risk and internal 
control systems, and for ensuring that the Company acts in the best 
interests of all shareholders and has regard to the interests of 
stakeholders. The schedule of matters reserved for the Board 
is available on the Company’s website at www.antofagasta.co.uk.

+ See pages 76 to 79 for Directors’ biographical details, skills and strengths 

and specific roles within the boardroom

KEY RESPONSIBILITIES
 − Strategy

 − Governance

 − Internal controls and risk management

 − Approving material transactions

 − Financial and performance reporting

 − Shareholder engagement

+ See page 82 for an overview of the Board’s activities during the year

74

Antofagasta plc Annual Report 2017From left to right: Jorge Bande, Juan Claro, Gonzalo Menéndez, Francisca Castro, Jean-Paul Luksic, Vivianne Blanlot, Ollie Oliveira, Tim Baker,  
William Hayes, Andrónico Luksic C, Ramón Jara.

CEO AND EXECUTIVE COMMITTEE

SUBCOMMITTEES OF THE EXECUTIVE COMMITTEE

CEO and  
Executive Committee 

Operating 
Performance 
Review 

Business 
Development 

Disclosure

Project 
Steering 

Ethics

The Board has delegated day-to-day responsibility for implementing 
the Group’s strategy to the Company’s CEO, Iván Arriagada.

Mr Arriagada is not a Director of the Company but is invited to attend 
all Board and Committee meetings and is supported by the members 
of the Executive Committee, each of whom has executive 
responsibility for his or her respective functions. Mr Arriagada chairs 
the Executive Committee.

The Executive Committee reviews significant matters and approves 
expenditure within designated authority levels.

The Executive Committee leads the annual budgeting and planning 
processes, monitors the performance of the Group’s operations and 
investments, and promotes the sharing of best practices and policies 
across the Group.

+  See page 79 for an overview of the interaction between the CEO 

and Executive Committee and the Board and pages 80 to 81 for the CEO 
and Executive Committee members’ biographies

The Executive Committee is assisted in the performance of its 
responsibilities by the Operating Performance Review Committee, 
the Business Development Committee, the Disclosure Committee and, 
from time to time, Project Steering Committees.

Members of the Executive Committee also sit on the boards of the 
Group’s operating companies and report to the Board, Mr Arriagada 
and the Executive Committee on the activities of those companies.

Following the introduction of the EU Market Abuse Regulation, 
the Board adopted its current Disclosure Procedures Manual and 
delegated to the Disclosure Committee primary internal responsibility 
for identifying information which may need to be disclosed to the 
market and for managing disclosure of that information.

The Ethics Committee is responsible for implementing, developing 
and updating the Group’s Code of Ethics and monitoring compliance.

75

antofagasta.co.ukGOVERNANCELEADERSHIP: BOARD OF DIRECTORS CONTINUED

INDEPENDENT OVERSIGHT

Biographical details for each Director are set out below. All of the Directors have confirmed that their other commitments do not prevent 
them from devoting sufficient time to fulfilling their roles. 

JEAN-PAUL LUKSIC
Chairman, 53

Independent: No

Appointed to the Board 1990

Appointed Chairman 2004*
Over 25 years’ experience with Antofagasta, 
including responsibility for overseeing 
development of the Los Pelambres and  
El Tesoro (Centinela Cathodes) mines

* Non-Executive since 2014

GONZALO MENÉNDEZ
Non-Executive Director, 69

Independent: No

Appointed to the Board 1985
Commercial engineer and economist with 
extensive experience in commercial and 
financial businesses across South America

Previous roles
 − CEO of Antofagasta Holdings plc (now 

Antofagasta plc) 

Previous roles
 − Chairman of Consejo Minero, the industry 
body representing the largest mining 
companies operating in Chile

 − Member of the governing board of Centro 
de Estudios Públicos, a Chilean not-for-
profit academic foundation

 − Member of the High Council of Universidad 

RAMÓN JARA
Non-Executive Director, 64

Independent: No

Appointed to the Board 2003
Lawyer with considerable legal and 
commercial experience in Chile

Current positions
 − Chairman of Fundación Minera  

Los Pelambres (charitable foundation)

 − Director of Fundación Andrónico  
Luksic A (charitable foundation)

8/8

Board meeting attendances

 − CEO of the Group’s mining division

Current positions
 − Member of the board of Consejo Minero

 − Non-Executive Director of Quiñenco SA, 
and Banco de Chile and Sociedad Matriz 
SAAM SA, both of which are listed 
companies in the Quiñenco group

 − Member of the governing board of Centro 
de Estudios Públicos, a Chilean not-for-
profit academic foundation

8/8

Board meeting attendance

OLLIE OLIVEIRA
Senior Independent Director, 66

Independent: Yes

Appointed to the Board 2011

Appointed Senior Independent Director 2016
Chartered accountant, management 
accountant and economist with over 35 years 
of strategic and operating experience in the 
mining industry and corporate finance

Previous roles
 − Senior executive positions within the Anglo 

American group, including Executive 
Director Corporate Finance and Head 
of Strategy and Business Development 
of De Beers SA

 − Director and audit committee chairman 

of Dominion Diamond Corporation

Current positions
 − Director, senior independent director and 

audit and risk committee and remuneration 
committee member of Polymetal 
International plc (effective 25 April 2018)

8/8

Board meeting attendance

76

de Antofagasta

 − Member of the Council of COANIL, 

a charitable foundation for intellectually-
disabled children

 − Member of the Corporate Governance 

Committee, SOFOFA/KPMG

 − Member of the Council of the School of 

Business and Economics, Diego Portales 
University

 − Professor, Graduate School of Business 

and Economics, University of Chile

Current positions
 − Chairman of the Board of Directors of 
Banco Latinoamericano de Comercio 
Exterior SA “Bladex”, listed on the NYSE

 − Director of Quiñenco SA and other 
companies in the Quiñenco group, 
including Banco de Chile and Compañía 
Sudamericana de Vapores SA

 − Vice-Chairman of Fundación Andrónico  

Luksic A (charitable foundation)

 − Vice-Chairman of Fundación Educacional 

Luksic (charitable foundation)

7/8

Board meeting attendance

Gonzalo Menéndez was unable to attend one meeting 
during the year because of travel outside Chile. 
Nevertheless, he reviewed Board papers, provided 
comments to the Chairman ahead of the meeting and 
validated meeting minutes.

JUAN CLARO
Non-Executive Director, 67

Independent: No

Appointed to the Board 2005
Extensive industrial experience in Chile, 
including an active role representing Chilean 
industrial interests nationally and 
internationally

Previous roles
 − Chairman of the Sociedad de Fomento 
Fabril (Chilean Society of Industrialists)

 − Chairman of the Confederación de la 
Producción y del Comercio (Chilean 
Business Confederation)

 − Chairman of the Consejo Binacional de 

Negocios Chile-China (Council for Bilateral 
Business Chile-China)

Current positions
 − Chairman of Coca-Cola Andina SA 

and Energía Coyanco SA

 − Director of several other companies in 

Chile, including Empresas Cementos Melon 
and Agrosuper

 − Member of the governing board of Centro 
de Estudios Públicos, a Chilean not-for-
profit academic foundation

8/8

Board meeting attendance

Key to Committees

Nomination and Governance

Audit and Risk

Sustainability and Stakeholder 
Management

Projects

Remuneration and Talent Management

Chairman

Antofagasta plc Annual Report 2017WILLIAM HAYES
Non-Executive Director, 73

ANDRÓNICO LUKSIC C
Non-Executive Director, 63

Independent: No

Independent: No

Appointed to the Board 2006
Extensive financial and operating experience 
in the copper and gold mining industries, 
in Chile, Latin America, North America and 
South Africa

Previous roles
 − Senior executive with Placer Dome Inc.

 − Chairman of the Consejo Minero, the 

industry body representing the largest 
mining companies operating in Chile

 − Chairman of the Gold Institute 

in Washington DC

Current positions
 − Chairman of Royal Gold Inc.

8/8

Board meeting attendance

TIM BAKER
Non-Executive Director, 65

Independent: Yes

Appointed to the Board 2011
Geologist with significant mining operations 
experience across North and South America 
and Africa, which has included managing 
mines in Chile, the United States, Tanzania 
and Venezuela and geological and operating 
roles in Canada, Kenya and Liberia

Previous roles
 − Vice President and Chief Operating Officer 

at Kinross Gold Corporation

 − General Manager of Placer Dome Chile

Current positions
 − Chairman of Golden Star Resources

 − Director of Sherritt International 

Corporation

 − Director of Rye Patch Gold Corporation

7/8

Board meeting attendance

Tim Baker was unable to attend one meeting during 
2017 because of a commitment outside Chile. 
Nevertheless, he reviewed Board papers, provided 
comments to the Chairman ahead of the meeting and 
validated meeting minutes.

Appointed to the Board 2013
Extensive experience across a range 
of business sectors throughout Chile,  
Latin America and Europe

Current positions
 − Chairman of Quiñenco SA, and of 

Compañía Cervecerías Unidas SA and 
Vice Chairman of Banco de Chile and 
Compañía Sudamericana de Vapores SA, 
all of which are listed companies in the 
Quiñenco group

 − Director of Nexans SA, a company listed 

on NYSE Euronext Paris

5/8

Board meeting attendance

Andonico Luksic was unable to attend three meetings 
during the year because of travel outside Chile. 
Nevertheless, he reviewed Board papers, provided 
comments to the Chairman ahead of the meetings 
and validated meeting minutes. 

VIVIANNE BLANLOT
Non-Executive Director, 62

Independent: Yes

Appointed to the Board 2014
Economist with extensive experience across 
the energy, mining, water and environmental 
sectors in the public and private sectors 
in Chile

Previous roles
 − Executive Director of the Comisión 

Nacional de Medio Ambiente 
(Environmental Agency in Chile)

 − Undersecretary of Comisión Nacional  

del Energía (National Energy Commission 
in Chile)

 − Minister of Defence for Chile

 − Director of Scotiabank Chile

 − Member of the Consejo para la 

Transparencia (Transparency Council),  
the Chilean body responsible for enforcing 
transparency in the public sector

Current positions
 − Director of Empresas CMPC SA, a pulp 
and packaging company listed in Chile

 − Director of Colbún SA, an energy company 

listed in Chile

8/8

Board meeting attendance

JORGE BANDE
Non-Executive Director, 65

Independent: Yes

Appointed to the Board 2014
Economist with over 30 years’ experience 
in the mining industry

Previous roles
 − Co-founder and Executive Director of 
Copper and Mining Studies “CESCO”, 
an independent not-for-profit think tank 
focused on mining policy issues

 − Vice President of Development and later 

director of Codelco

 − CEO of AMP Chile

 − Adviser to the World Bank

 − Member of the Global Agenda Council  
for Responsible Minerals Resource 
Management at the World Economic Forum

 − Director of Edelnor SA, Electroandina SA 

(now E-CL SA) and Bupa Chile SA

 − Member of the Experts Committee for 
Copper Prices for the Chilean Ministry  
of Finance

Current positions
 − Director of CESCO

 − Professor of the International Post-
Graduate Programme in Mineral 
Economics at the University of Chile

 − Director of NEXTMinerals SA

 − Member of the Advisory Council 

of Sacyr-Chile

 − Member of the Comité de Vigilancia  

of CleanTech Fund

8/8

Board meeting attendance

FRANCISCA CASTRO
Non-Executive Director, 55

Independent: Yes

Appointed to the Board 2016
Commercial engineer with over 25 years’ 
experience in industry including mining, 
energy, finance and public/private 
infrastructure projects in the United States 
and Chile

Previous roles
 − Executive Vice-President of Strategic 
Business and Subsidiaries at Codelco

 − General Co-ordinator of Concessions 
at the Chilean Ministry of Public Works

 − Various roles within the Chilean Finance 

Ministry

 − World Bank, Washington

Current positions
 − Member of the Chilean Pension Funds Risk 

Classification Committee

 − Member of the independent Technical 

Panel of Chilean Public Works Concessions

8/8

Board meeting attendance

77

antofagasta.co.ukGOVERNANCELEADERSHIP: BOARD BALANCE AND SKILLS

A DIVERSE AND 
EFFECTIVE BOARD

The Board comprises Directors with a broad and complementary set of technical skills, educational and professional experience, nationalities, 
personalities, cultures and perspectives. The Group’s management team, led by Iván Arriagada, performs an essential role in ensuring that the 
Board has the information required to make effective decisions and to report in real time on the Company’s performance and implementation 
of the Group’s strategy.

BOARD BALANCE

INDEPENDENCE1

GENDER DIVERSITY

TENURE

NATIONALITY2

1

2

5

Chairman 
Independent 
Non-Independent

5

Male 
Female

5

1-5 years 
6-9 years 
9+ years

9

2

4

1

1

1

Chile 
USA 
Canada 
UK

8

1.  The Board reviews the independence of Directors annually. None of the relationships set out in Provision B.1.1. of the Code apply to the Company’s Independent Directors. 
2.  “A Report into the Ethnic Diversity of UK Boards” (Sir John Parker, The Parker Review Committee, 12 October 2017), identified eight of the current Directors as being from 
an ethnic minority background (which includes individuals with South American heritage). As explained on page 87, because the Group’s footprint is primarily in Chile, the 
Board aims to include a number of Directors from outside Chile in support of its vision and strategy.

co m pensation
Executive 

Latin A m erican 
 experience

U K m arket

m anage m ent
Project 

Energy experience
Govern m ent 
relations

Sustainability

Co m m unication

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























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





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BOARD SKILLS MATRIX

Independence

CEO experience

experience
M ining  

M ining operations 
experience

Board governance
Financial

Legal









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

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

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

Director
Jean-Paul Luksic
Ollie Oliveira
Gonzalo Menéndez
Ramón Jara
Juan Claro
William Hayes
Tim Baker
Andrónico Luksic C
Vivianne Blanlot
Jorge Bande
Francisca Castro

78

Antofagasta plc Annual Report 2017LEADERSHIP: ROLES IN THE BOARDROOM

SENIOR INDEPENDENT DIRECTOR

CHAIRMAN

Ollie Oliveira

Jean-Paul Luksic 
(Non-Executive Chairman)

CEO

Iván Arriagada 
(not a Director)

 − Provides a sounding board for the 

 − Leads the Board and ensures its 

 − Leads the implementation of the 

Chairman and supports the Chairman 
in the delivery of his objectives as 
required.

 − Where necessary, acts as an 

intermediary between the Chairman 
and the other members of the Board 
or the CEO.

 − Acts as an additional point of contact 
for shareholders, focusing on the 
Group’s governance and strategy, and 
gives shareholders a means of raising 
concerns other than with the Chairman 
or senior management.

INDEPENDENT NON-EXECUTIVE 
DIRECTORS

Tim Baker 
Jorge Bande  
Vivianne Blanlot 
Francisca Castro 
Ollie Oliveira 

These Directors meet the independence 
criteria set out in the UK Corporate 
Governance Code and the Board is 
satisfied that they are independent.

 − No connection with the Group or any 

other Director which could be 
perceived to compromise independence.

 − Provide a range of outside perspectives 
to the Group and encourage robust 
debate with, and challenge of, the 
Group’s executive management.

 − Ensure that no individual or small group 
of individuals can dominate the Board’s 
decision-making.

effectiveness in all aspects of its duties.

Group’s strategy set by the Board.

 − Leads the Executive Committee and 

ensures its effectiveness in all aspects 
of its duties.

 − Provides information to the Board and 
participates in Board discussion in 
connection with day-to-day activities 
of the Group.

EXECUTIVE COMMITTEE MEMBERS
See pages 80 and 81

Present proposals, recommendations 
and information to the Board within their 
areas of responsibility. 

SECRETARY TO THE BOARD/  
COMPANY SECRETARY

Sebastián Conde
 − Provides a conduit for Board and 
Committee communications and 
provides a link between the Board 
and management.

 − Ensures Board members have access 

to the information they need to perform 
their roles.

Julian Anderson
 − Works closely with the Secretary to 

the Board to provide a conduit between 
shareholders, the Board and 
management in connection with 
UK corporate governance and 
listing obligations.

 − Promotes the highest standards of 
integrity, probity and corporate 
governance.

 − Sets the agenda for Board meetings 
in consultation with the Secretary to 
the Board, other Directors and 
members of senior management.

 − Chairs meetings and ensures that there 
is adequate time for discussions of all 
agenda items, with a focus on strategic, 
rather than routine, issues.

 − Promotes a culture of openness and 
debate within the Board by facilitating 
the effective contribution of all 
Directors.

 − Oversees Director development, 

induction, performance review and 
relations with shareholders.

ROLES

NON-EXECUTIVE DIRECTORS

Juan Claro  
William Hayes 
Ramón Jara 
Andrónico Luksic C 
Gonzalo Menéndez 

The Board does not consider these 
Directors to be independent because they 
do not meet one or more of the 
independence criteria set out in the UK 
Corporate Governance Code.*

 − Provide a range of outside perspectives 
to the Group and encourage robust 
debate with, and challenge of, the 
Group’s executive management.

 − Ensure that no individual or small group 
of individuals can dominate the Board’s 
decision-making.

*  Ramón Jara provides advisory services to the Group. Andrónico Luksic C is the brother of Jean-Paul Luksic, the Chairman of the Company, and is Chairman of Quiñenco SA 
and Chairman or a Director of Quiñenco’s other listed subsidiaries. Jean-Paul Luksic and Gonzalo Menéndez are also Non-Executive Directors of Quiñenco and some of its 
listed subsidiaries. Like Antofagasta plc, Quiñenco is controlled by a foundation in which members of the Luksic family are interested. Juan Claro and William Hayes have 
served on the Board for more than nine years from the date of their first election.

79

antofagasta.co.ukGOVERNANCELEADERSHIP: EXECUTIVE COMMITTEE

AN EXPERIENCED 
MANAGEMENT TEAM

IVÁN ARRIAGADA
CEO

ALFREDO ATUCHA
CFO

P

P

Joined the Group in 2015
Commercial engineer 
and economist with over 
20 years’ international 
experience in the mining 
and oil and gas industries.

Previous roles
 − Chief Financial Officer 

of Codelco

 − Various positions at 

BHP Billiton, including 
President of Pampa 
Norte (Spence and 
Cerro Colorado), Vice 
President Operations 
and Chief Financial 
Officer of the Base 
Metals division

 − Over 15 years of 

experience with Shell in 
Chile, the United 
Kingdom, Argentina and 
the United States

Joined the Group in 2013
Chartered accountant 
with a MBA and over 
30 years’ financial and 
International experience 
in the mining, energy and 
fast-moving consumer 
goods industries. 

Previous roles
 − 10 years’ service at BHP 

Billiton as Vice 
President of Finance for 
Minera Escondida and 
Senior Manager of Base 
Metals Major Projects

 − Finance and 

Administration Manager 
at Chilquinta Energía 
(part of Sempra Energy 
and PSG Group)

 − CFO at Reckitt 

Benckiser in Spain, 
Brazil and Chile

 − Tax Planning and 

Treasury Manager at 
British American 
Tobacco

RENÉ AGUILAR
Vice President of 
Corporate Affairs and 
Sustainability

P

Joined the Group in 2017
Industrial psychologist 
with 20 years’ experience 
in mining, including in 
sustainability, safety, 
human resources and 
corporate affairs.

Previous roles
 − Group Head of Safety at 
Anglo American plc, 
London

 − Vice President of 

Corporate Affairs and 
Sustainability at 
Codelco, Chile

 − Health and Safety 

Director at International 
Council on Mining and 
Metals “ICMM”, London

PATRICIO ENEI
Vice President of Legal

ANDRÓNICO LUKSIC L.
Vice President 
of Development

Joined the Group in 2006
Business administrator 
with broad mining 
experience in sales, 
exploration, development 
and general management.

Previous roles
 − Corporate Manager at 
Antofagasta Minerals

 − Director, Antofagasta 

Minerals Toronto Office

 − Various positions at 

Banco de Chile

Joined the Group in 2014
Lawyer with over 
20 years’ experience 
in mining, including roles 
at some of the largest 
international copper 
companies operating 
in Chile.

Previous roles
 − General Counsel 

at Codelco

 − Corporate Affairs 

Manager of Minera 
Escondida

 − Senior lawyer at BHP 

Billiton in Chile

 − Chief Legal Counsel at 
Minera Doña Inés de 
Collahuasi

 − Lawyer at the Instituto 

de Normalización 
Previsional and in 
private practice

80

Antofagasta plc Annual Report 2017HERNÁN MENARES
Vice President 
of Operations

P

Joined the Group in 2008
Mining engineer and 
mineral economist, with 
30 years’ experience 
in mining.

Previous roles
 − Project Development 
Manager for the 
Centinela District

 − Operating and business 

planning roles at 
Codelco

 − Various positions at 

Compañía Minera del 
Pacífico and Compañía 
Minera Huasco SA

ANA MARÍA 
RABAGLIATI
Vice President of Human 
Resources

Joined the Group in 2013
Human resources 
specialist with more than 
25 years’ experience in 
international companies 
across a range of 
industries, including 
financial services, 
industrials and oil and gas.

Previous roles
 − Corporate Human 

Resources Manager 
at Masisa

 − Country Human 
Resources Vice 
President at Citigroup

 − Human Resources 

Manager of the Lafarge 
Group in Chile

 − Various positions at 

Shell, including Human 
Resources Manager of 
the Lubricants Business 
of Shell Oil Latin 
America

GONZALO SÁNCHEZ
Vice President of Sales

Joined the Group in 1996
Civil engineer with over 
25 years’ experience in 
marketing and hedging 
metals.

Previous roles
 − Deputy Commercial 

Director, Antofagasta 
Minerals

 − Copper sales at Codelco

FRANCISCO WALTHER
Vice President of Projects

Joined the Group in 2007
Mining engineer with over 
25 years’ experience in 
mining operations and 
engineering for open pit 
and underground mines.

Previous roles
 − Project Director 
of Reko Diq 

 − Director of Codelco’s 

Chuquicamata 
underground mine 
project

 − Head of engineering for 
Codelco’s Mansa Mina 
(now Ministro Hales) 
project

FRANCISCO VELOSO
Vice President of Investor 
Relations

P

Joined the Group in 1993
Lawyer with over 
25 years’ experience 
with Antofagasta Minerals, 
including oversight of 
critical phases of 
development at Los 
Pelambres.

Previous roles
 − Vice President of 

Corporate Affairs and 
Sustainability at 
Antofagasta Minerals

 − Vice President of Legal 
and Corporate Affairs 
at Antofagasta Minerals

 − Vice President of 

Human Resources at 
Antofagasta Minerals

 − General Counsel at Los 

Pelambres

 − Legal Manager at VTR

 − Chief lawyer at Michilla

Key to Committees

Operating Performance Review Committee 

Business Development Committee 

Ethics Committee

Disclosure Committee  P Project Steering Committees

81

antofagasta.co.ukGOVERNANCEEFFECTIVENESS: BOARD ACTIVITIES

THE BOARD’S ACTIVITIES

The Board met eight times during 2017. Each Director withdrew from any meeting when 
his or her own position was being considered. All Directors attended the 2017 AGM.

1

THE EXISTING 
CORE BUSINESS

2

GROWTH OF THE 
CORE BUSINESS 

3 GROWTH BEYOND 

THE CORE BUSINESS

 − Oversaw implementation of the 
Group’s new operating model 

 − Monitored dialogue with 

governments in Argentina and 
Chile in connection with the  
Cerro Amarillo waste dump at 
Los Pelambres

 − Reviewed the Group’s compliance 
with environmental commitments

 − Approved the disposal of the 

Group’s interest in the Alto Maipo 
hydroelectric project

 − Monitored labour relations at  
the Group’s mining operations 

 − Monitored an independent  

review of tailings dam safety at 
Los Pelambres and Centinela

 − Reviewed and monitored the 

Group’s operating performance

 − Reviewed and approved the 

Group’s copper concentrate and 
copper cathode sales strategy

 − Approved key procurement 

contracts

STRATEGY AND MANAGEMENT
 − Held a standalone strategy day with 

particular focus on the Group’s growth 
strategy and strategic pillars

 − Reviewed the Group’s innovation 

and technology programme

 − Reviewed the Group’s diversity 

and inclusion strategy

 − Approved the Group’s tax strategy

BOARD AND SENIOR MANAGEMENT 
STRUCTURE
 − Refreshed membership of the Board’s 

Committees

 − Welcomed new Vice President of 

Corporate Affairs and Sustainability, 
René Aguilar

82

 − Approved 2017 work plans, 

 − Approved a “Growth beyond the 

budgets and studies in relation  
to the Los Pelambres Incremental 
Expansion and Centinela Second 
Concentrator projects

 − Approved 2017 budgets and 
construction work plans in 
relation to the Encuentro Oxides 
and Molybdenum Plant projects  
at Centinela

Core Business” strategy guideline 
for management, on the preferred 
geography, commodity, size and 
stage for growth opportunities 
outside the Group’s core business

 − Monitored developments at the 

Twin Metals project in Minnesota

 − Reviewed and approved the 

acquisition of mining properties  
in Chile

FINANCIAL AND PERFORMANCE 
REPORTING
 − Approved the Group’s 2016 full-year 

and 2017 half-year results

 − Reviewed and approved the base 

case and development case for the 
Group’s assets

 − Reviewed the Group’s ongoing capital 
management strategy and commercial 
parameters 

 − Approved the dividends paid 
to shareholders during 2017

 − Reviewed and approved the Group’s 

2018 budget

INTERNAL CONTROLS AND  
RISK MANAGEMENT
 − Reviewed the Group’s risk matrix

 − Approved a work stream to implement 

proposals to improve further the 
Group’s internal control and risk 
management systems 

GOVERNANCE AND STAKEHOLDER 
ENGAGEMENT
 − Reviewed Director independence 

 − Oversaw the implementation of key 
recommendations arising from the 
2016–2017 externally facilitated Board 
effectiveness review

 − Reviewed the 2017 Sustainability 

Report

 − Engaged with shareholders on 

corporate governance matters at the 
2017 AGM

Antofagasta plc Annual Report 2017BOARD AND COMMITTEE 
INFORMATION FLOWS

CHAIRMAN AGREES AGENDA WITH DIRECTORS
The Chairman tables an agenda of standing topics to be considered by the Board each year, which is then supplemented by agreed key 
topics and events requiring consideration during the year.

PAPERS CIRCULATED IN ADVANCE OF MEETINGS
Materials are sent to Board and Committee members a week in advance of each meeting. 

Each presentation has a summary sheet setting out the objective, background, proposal, justification and risk analysis and next steps. 
Materials include the CEO’s report, which is an open and candid summary of his views on evolving challenges, changes in risk assessments 
and emerging issues, as well as the management report with detailed information on the Group’s performance against key indicators.

BOARD AND COMMITTEE MEETINGS
Each Board and Committee meeting has one or more short sessions without management present to allow Directors to set expectations for 
the meeting and to reflect on and evaluate the meeting upon its conclusion. The CEO provides timely updates to the Board on emerging 
issues, and executives present to the Board and its Committees on operating and development matters, allowing close interaction between 
Board members and a wide range of executive management.

MINUTES PREPARED, CIRCULATED AND APPROVED
The Secretary to the Board minutes all Board and Committee meetings. These minutes are circulated and reviewed by the Board and 
management before being updated as necessary and tabled for approval.

ACTION LISTS PREPARED AND UPDATED  
AS KEY ACTIONS ARE IMPLEMENTED
The Board and each Committee respectively maintain an action list that is reviewed at the beginning of each meeting to ensure that 
Directors’ enquiries and concerns are clearly identified and addressed.

INFORMATION BETWEEN MEETINGS
Between Board meetings, Directors receive flash reports with monthly and year-to-date production and financial results, including key 
metrics in respect of safety, environmental and social performance, ensuring that the Board is regularly updated on the Group’s 
performance. From time to time, Directors may also receive reports highlighting key developments in the Group’s exploration, projects 
and business development activities, or general information on the commodity markets or innovations in mining. 

83

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: INTRODUCTION TO THE COMMITTEES

BOARD COMMITTEES

The Board relies on its 
Committees to ensure 
that deliberations by 
the Board are focused 
on the key issues and 
that proposals are 
subject to detailed 
specialist debate and 
rigorous challenge.

Each Committee also 
provides an essential 
forum to allow the 
views and perspectives 
of stakeholders to be 
discussed, so that they 
too can be represented  
in the Board’s 
deliberations.

84

NOMINATION AND  
GOVERNANCE 
COMMITTEE

p86

AUDIT AND RISK 
COMMITTEE

p90

SUSTAINABILITY  
AND STAKEHOLDER  
MANAGEMENT COMMITTEE

p96

PROJECTS  
COMMITTEE

p100

REMUNERATION AND 
TALENT MANAGEMENT 
COMMITTEE

p102

Antofagasta plc Annual Report 2017CHAIRMAN
Jean-Paul Luksic

MEMBERS
Tim Baker 
Ollie Oliveira

CHAIRMAN
Ollie Oliveira

MEMBERS
Jorge Bande  
Vivianne Blanlot 
Francisca Castro

CHAIRMAN
Vivianne Blanlot

MEMBERS
Jorge Bande 
Juan Claro 
William Hayes

CHAIRMAN
Ollie Oliveira

MEMBERS
Tim Baker 
Jorge Bande 
Ramón Jara

CHAIRMAN
Tim Baker

MEMBERS
Vivianne Blanlot 
Francisca Castro

 − Board effectiveness  

reviews

 − Risk and internal control
 − Compliance

KEY RESPONSIBILITIES
 − Corporate governance
 − Succession planning for 
the CEO and the Board 
 − Board and Committee  

composition

KEY RESPONSIBILITIES
 − Financial reporting
 − External audit
 − Internal audit

KEY RESPONSIBILITIES
 − Policies and commitments
 − Safety and health
 − Community relations
 − Environment

KEY RESPONSIBILITIES
 − Policies and commitments
 − Reviews all major projects
 − Reviews lessons learned 
from completed projects

KEY RESPONSIBILITIES
 − Directors’ remuneration
 − Executive remuneration
 − Group pay structures

 − Talent management 

and succession planning 
for the Executive 
Committee 

85

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: NOMINATION AND GOVERNANCE COMMITTEE REPORT

“The Committee is focused on ensuring 
that the Board and its Committees 
operate effectively at all times.”

2017 MEMBERSHIP AND MEETING ATTENDANCE

Jean-Paul Luksic, Chairman

Jean-Paul Luksic (Chairman)
Tim Baker 

Ollie Oliveira 

Number 
attended

4/4
4/4

4/4

 − Other regular attendees include the CEO,  

Company Secretary and Secretary to the Board.

 − Effective 1 January 2017, William Hayes rotated off the Committee 

and Ollie Oliveira joined the Committee.

 − The Committee meets as necessary and at least twice  

per year.

 − Except for the Chairman, all Committee members  

are independent.

KEY RESPONSIBILITIES
The Nomination and Governance Committee supports the Board 
in ensuring that the Group has effective governance structures in 
place and that the Board and its Committees operate effectively. 
The Committee identifies qualified individuals to join the Board, 
recommends any changes to Board and Committee composition 
and monitors an annual process to assess Board effectiveness. 

This involves:

 − monitoring trends, initiatives and proposals in relation 

to corporate governance

 − overseeing and facilitating annual reviews of the Chairman, 

Directors and the Board, including externally facilitated reviews

 − evaluating and overseeing the balance of skills, knowledge and 
experience on the Board and its Committees, and reviewing the 
independence of Directors

 − overseeing Board succession plans and leading the process of 
identifying suitable candidates to fill vacancies, nominating such 
candidates for approval by the Board and ensuring that the 
appointments are made on merit and against objective criteria.

KEY ACTIVITIES IN 2017

Corporate  
governance

Succession  
planning

Board and committee 
composition

Board effectiveness  
reviews

 − Reviewed the impact of 

 − Reviewed the Board 

changes to the composition  
of all Committees which took 
effect from 1 January 2017.

 − Reviewed the independence 
of all Directors, making 
recommendations to the 
Board.

effectiveness report prepared 
by Independent Audit Limited 

 − Oversaw the implementation 
of the recommendations 
arising from the review.

 − Reviewed the Governance 
section of the 2016 Annual 
Report and recommended it 
to the Board for approval.

 − Reviewed the governance 
structures in place at the 
Group’s operating companies.

 − Reviewed Directors’ potential 

conflicts of interest.

 − Reviewed feedback provided 
by shareholders and proxy 
advisers in advance of the 
2017 AGM. 

 − Reviewed the details of 

proposals for UK corporate 
governance reform.

 − Reviewed updated written 
succession plans for the 
Board and its Committees.

 − Reviewed succession plans 

for the CEO. 

 − Provided input to the 

Remuneration and Talent 
Management Committee in 
relation to succession plans 
for the Executive Committee 
(excluding the CEO) and the 
Group’s diversity and 
inclusion programme.

86

Antofagasta plc Annual Report 2017 
BOARD COMPOSITION AND 
SUCCESSION PLANNING

Succession planning at Board level includes setting policies that encourage a strong  
and diverse pipeline of candidates well into the future.

Q. What steps does the Committee take in order to identify 

and appoint new Directors?

The Committee reviews the composition of the Board and its 
Committees on an ongoing basis and, formally, at least once per year. 

appointments continue to be made on merit. To assist with this, the 
Board will ensure that searches for new Directors access the widest 
possible talent pool and that one half of the candidates on longlists 
comprise women.

There is a written succession plan in place for all Board and 
Committee positions, including contingency plans in the event 
of an unexpected departure. 

The Committee regularly discusses relevant profiles for future 
appointments and potential candidates, taking into account the results 
of Board effectiveness reviews, as shown on page 88, having regard 
to the Group’s vision and strategy, as shown on pages 12 and 13, the 
Board’s diversity policy (below) and the core competencies and areas 
of expertise on the Board, as shown on page 78. 

When actively searching for a new Director, the Committee usually 
appoints an independent external search consultancy to assist with 
the process. The external search consultancy will receive a briefing 
on the skills and experience of the existing Directors and will be asked 
to identify potential candidates who would best meet a number 
of criteria, including relevant experience, skills, personality type, 
contribution to Board diversity and whether they have sufficient time 
to devote to the role. The Committee will then identify a shortlist of 
candidates to be interviewed by members of the Committee who then 
collectively decide whether the candidate should be recommended 
to the Board for appointment. 

Q. What is the Board’s position in relation to diversity?
The Board believes in the benefits of diversity and that more diverse 
companies are able to attract the best talent and achieve stronger and 
more reliable overall performance. However, diversity is a general 
term that is made up of a number of different aspects including 
gender, disability, educational and professional experience, nationality, 
personality type, culture and perspective. Our vision is to be an 
international mining company based in Chile, and we consider all 
of these aspects when making appointments and setting policies 
in support of our vision and strategy.

Q. What policy is currently in place to ensure that there is 

diversity at Board level?

The Committee has worked hard to ensure that the Board is suitably 
diverse across the individual aspects of diversity set out above and 
the Board reviews its effectiveness in meeting diversity goals each 
year as part of the annual Board evaluation process.

As noted on page 68, the Group’s current activities are focused in 
Chile. Nevertheless, for many years the Board has included a number 
of Directors from outside Chile in support of our vision and strategy 
and we actively look for opportunities to increase gender diversity 
beyond the levels in the wider mining workforce in Chile, while 
ensuring that appointments continue to be made on merit. Two of our 
three most recent appointments have been women. The Board plans 
to continue to actively look for opportunities to increase female 
representation beyond the current level while ensuring that 

Q. What policies are in place to promote a diverse pipeline 

of talent for the future?

To further promote diversity at the Executive Committee level and 
below, a new Group Diversity and Inclusion strategy was approved 
by the Board during the year. This strategy was prepared following 
an exercise to assess the maturity of the Group’s existing diversity 
and inclusion model which included interviews with stakeholders, 
bench marking and a comprehensive review of the Group’s policies 
and processes. The review assessed whether structural impediments 
existed that needed to be addressed in order to achieve a sustained 
improvement in the maturity of the Group’s diversity and 
inclusion model. 

The Group carefully considered the elements of diversity that would 
contribute most towards achievement of the Group’s vision and 
strategy and has committed to materially increasing the percentage 
of women, persons with disabilities and persons with international 
backgrounds and/or experience in the workforce by 2022, and for 
these improvements to be embedded, sustained and improved upon 
from then. The current levels of gender diversity within the mining 
division’s workforce and further rationale behind the choice of these 
elements are set out within the Strategic Report on page 59. 

As shown on page 113, metrics associated with the development 
of the Diversity and Inclusion strategy accounted for 2.5% of the 
Group’s Annual Bonus Plan in 2017 and will also account for 2.5% 
in the Group’s Annual Bonus Plan in 2018, with performance to be 
assessed by the Remuneration and Talent Management Committee 
at the end of the year.

The Remuneration and Talent Management Committee is also 
responsible for succession planning for the Executive Committee 
(excluding the CEO) which allows for ongoing monitoring of the 
impact of the Diversity and Inclusion strategy on appointments 
and progress within the Company, and further details are set out 
on page 104.

Q. What support does the Company provide to facilitate 
induction and assist with professional development? 
The Company provides a thorough induction to new Directors, 
and insurance, access to resources and continuing professional 
development for incumbent Directors. Further details are set out 
on page 89.

Jean-Paul Luksic
Chairman of the Nomination and Governance Committee

87

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: BOARD EFFECTIVENESS REVIEWS

REVIEWING THE 
BOARD’S EFFECTIVENESS

The Board’s commitment to continuous improvement is reflected in its 
candid and thorough effectiveness reviews.

EXTERNAL REVIEW
The most recent externally-facilitated Board effectiveness review 
commenced in 2016 and concluded in 2017. It was carried out by 
Independent Audit Limited* (“Independent Audit”) which had 
previously conducted an externally-facilitated review of the 
effectiveness of the Board and its Committees in 2013 and was 
therefore well placed to assess progress on the committed action 
plans carried out in the years since.

Following the 2016 externally-facilitated review and based 
on interviews and reviews of Board and Committee 
papers, Independent Audit stated in its February 
2017 report that:

 − considerable progress has been made across many aspects 
of the Board’s activities, including a strong focus on cost and 
competitiveness as well as considerable attention given to other 
crucial areas, including relations with local communities, and to 
safety and health

 − looking ahead, management will need to focus on the further 
development of the information provided to Directors to help 

support discussion of the main challenges and risks. In turn, 

the Board will need to assess how the Group will 
respond to industry trends, macroeconomic 

developments and innovation

Year 1 – 2016
• External effectiveness review, 
including benchmarking

• Annual review of the Chairman by 
the Non-Executive Directors, led by 
the Senior Independent Director

 − a very thorough approach to 
follow-through of the agreed 
actions had been adopted

INTERNAL  
REVIEW
Following the 
externally-facilitated 
review, the Chairman 
and the Senior 
Independent Director 
met to agree an action 
plan for closing the 
gaps identified by 
Independent Audit.

Year 3 – 2018
• Internal review, gap 
closure and 
development of plan for 
external assessment

• Annual review of the 
Chairman by the 
Non-Executive 
Directors, led by the 
Senior Independent 
Director

During the year, the Senior 
Independent Director also asked 
Non-Executive Directors to 
complete a survey on the 
Chairman’s effectiveness. At a 
meeting without the Chairman present, 
the Senior Independent Director presented 
consolidated results to Non-Executive Directors 
and agreed on both positive aspects and 
improvement opportunities, which were summarised in a 
feedback letter shared by the Senior Independent Director with the 
Chairman. The Chairman used these comments to improve further 
the effective operation of the Board. 

Year 2 – 2017
• Progress assessment 
and gap closure from 
external effectiveness 
review 

• Annual review of the 
Chairman by the 
Non-Executive 
Directors, led by the 
Senior Independent 
Director

In turn, the Chairman 
assessed each of 
the Non-Executive 
Directors’ individual 
effectiveness, 
performance and 
potential to assume new 
Board or Committee 
roles, as input to update 
the Board and Committee 
succession plans.

Significant improvements 
have been made to Board 
effectiveness over the past  

four years.

The Board will continue to use 
the findings of the February 2017 

progress report to make additional, 

focused improvements to Board and 

Committee effectiveness. 

The Board will conduct an internal effectiveness 
assessment in 2018 in preparation for the next external 

evaluation in 2019 or 2020.

“We applaud the seriousness with which the Company takes 
its reviews of effectiveness and the follow‑through.”

Independent Audit Limited 

* Independent Audit Limited is an external independent adviser with no other connection to the Company.

88

Antofagasta plc Annual Report 2017ACCOUNTABILITY: PROFESSIONAL DEVELOPMENT

PROFESSIONAL 
DEVELOPMENT

INDUCTION
New Directors receive a thorough induction on joining the Board. This includes meetings with the Chairman, other Directors,  
the CEO and Executive Committee members; briefings on the Group’s operations, projects and exploration activities; and site visits. 

CONTINUING PROFESSIONAL DEVELOPMENT
Directors receive an annual briefing on legal, regulatory and other developments that are relevant to directors of UK-listed companies 
as well as specific briefings on topics that may be requested from time to time.

Directors have access to, and are encouraged to regularly attend, round-table discussions, seminars and other events that cover topics 
relevant to their position and to the Group as a whole.

RESOURCES 
The Company provides Directors with the necessary resources to maintain and enhance their knowledge and capabilities. 

All Directors have access to management and to such further information as they need to discharge their duties and responsibilities 
fully and effectively. 

Directors are also entitled to seek independent professional advice concerning the affairs of the Group at the Company’s expense.

INSURANCE
The Company has appropriate insurance in place to cover Directors against any claims that may be made against them.

antofagasta.co.uk

89

GOVERNANCEACCOUNTABILITY: AUDIT AND RISK COMMITTEE REPORT

TT

TBC

“The Audit and Risk Committee supports 
the Board in its responsibilities relating 
to financial reporting and risk 
management.”

Ollie Oliveira, Chairman

2017 MEMBERSHIP AND MEETING ATTENDANCE

Ollie Oliveira (Chairman)
Jorge Bande

Vivianne Blanlot1

Francisca Castro

Number  
attended

4/4
4/4

3/4

4/4

1.  Vivianne Blanlot was unable to attend one Committee meeting during the year. 
Nevertheless, she reviewed Committee papers, provided comments to the 
Chairman ahead of the meeting and validated meeting minutes.

 − Other regular attendees include the CEO, CFO, Group Financial 
Controller, Head of Internal Audit, Strategic Planning Manager, 
Head of Risk and Secretary to the Board.

 − Effective 1 January 2017, William Hayes rotated off the Committee 
and Vivianne Blanlot and Francisca Castro joined the Committee.

 − The Committee meets as necessary and at least twice per year. 

 − All Committee members are independent.

 − Ollie Oliveira, Jorge Bande and Francisca Castro are all 

considered to have recent and relevant financial experience.

 − The Committee as a whole has significant experience relevant 

to the mining sector.

KEY RESPONSIBILITIES
The Audit and Risk Committee assists the Board in meeting its 
responsibilities relating to financial reporting and control and risk 
management. The Committee’s main responsibilities cover:

 − overseeing the external audit process and managing the 

relationship with PwC, the Group’s external auditor

 − internal audit, including monitoring of the Group’s Internal Audit 

 − financial reporting, which includes responsibility for reviewing the 

function, processes and findings

year-end and half-year financial reports, and monitoring the 
overall financial reporting process

 − assisting the Board with its responsibilities in respect of risk 

management and related controls and compliance.

KEY ACTIVITIES IN 2017

Financial  
reporting

External  
audit

Risk and internal control

Compliance

 − Reviewed the 2016 
year-end and 2017 
half-year financial 
reporting, with a focus 
on the significant 
accounting issues 
relating to the Group’s 
results.

 − Assisted the Board  
in ensuring that the 
2016 Annual Report  
is fair, balanced and 
understandable,  
and reviewed the 
long-term viability 
statement contained in 
the 2016 Annual 
Report.

 − Reviewed and 

 − Conducted detailed 

reviews with the General 
Managers of each of the 
Group’s operations, 
covering the operations’ 
key risks.

 − Monitored the work 
which commenced 
during 2017 to provide 
an updated assessment 
of the maturity of the 
Group’s risk 
management process, 
and also an updated 
review of the Group’s 
risk appetite and risk 
tolerance.

approved the 2017 
audit plan, including 
fees.

 − Assessed the 

effectiveness of the 
external audit process.

Internal  
audit

 − Reviewed the key 
findings from the 
internal audit reviews 
conducted during 
2017.

 − Agreed the scope  
and areas of focus  
for the 2018 internal 
audit plan.

 − Reviewed developments 
in the Group’s standard 
risk management 
processes during 
the year.

 − Assisted the Board with 
its assessment of the 
Group’s key risks and its 
review of the 
effectiveness of the risk 
management and 
internal control 
processes.

 − Reviewed the Group’s 

whistleblowing 
arrangements, 
including details of 
the most significant 
reports and the 
resulting actions 
taken.

 − Reviewed updates to 
the conflict of interest 
declarations by the 
Group’s employees 
and suppliers, and 
details of the Group’s 
limited relationships 
with politically 
exposed persons.

 − Monitored the 

functioning of the 
Group’s crime 
prevention model, 
in accordance with 
Chilean and UK 
anti-corruption 
legislation.

90

Antofagasta plc Annual Report 2017 
FOCUSING ON RISK

An increased focus on risk has enhanced the Committee’s oversight 
and consideration of the inputs and sensitivities that apply to the Group’s 
periodically reported financial position.

Q. What were the key developments and activities for the 

FINANCIAL REPORTING

Committee in 2017?

We are in a more positive market environment than has been the 
case for several years, but this does not mean that we can in any 
way be complacent in terms of managing the risks facing the Group. 
Ours is a long-term business, and many of our most significant risks 
are present throughout the cycle; in fact, a more robust market 
environment can bring its own heightened risks. The operation of the 
Committee during 2017 has reflected this need for our focus on risk 
to continue to develop and evolve.

The size of the Committee increased from three to four members 
from the start of 2017, which has been very useful in dealing with the 
significant responsibilities of the Committee. This also means that we 
now have members of the Committee participating on the Projects 
Committee and the Sustainability and Stakeholder Management 
Committee. This allows close linkage between the overall review of 
the Group’s risks and risk management processes by the Audit and 
Risk Committee, and the more specific risks relating to project 
execution, safety, environmental and community issues considered in 
detail by the other Committees. To illustrate the benefit of this linkage, 
internal audit conducted a review during 2017 relating to sustainability 
issues across the Group, and having Vivianne Blanlot and Jorge 
Bande on both the Audit and Risk Committee and the Sustainability 
and Stakeholder Management Committee was very helpful in ensuring 
efficient Board-level monitoring of this work.

In June 2017, for the first time, we held a meeting devoted solely to 
risk management. At this meeting we reviewed the main materialised 
risks at each of the Group’s operations over the past 12 months, and 
the current assessment of the key risks for each of the operations, 
their related mitigation activities and the expected evolution of those 
risks over the coming 12 months.

The Committee has also been monitoring work which commenced 
during 2017 to provide an updated assessment of the maturity of 
the Group’s risk management process, as well as an updated review 
of the Group’s risk appetite and risk tolerance.

Q. What are the Committee’s main activities in respect of the 

Group’s financial reporting?

The Committee reviews the year-end financial statements and 
half-yearly financial report, and we ensure that the key accounting 
policies, estimates and judgements applied in those financial 
statements are reasonable.

We also monitor the overall financial reporting process to ensure it 
is robust and well-controlled. This includes ensuring that the Group’s 
accounting and finance function is adequately resourced with 
appropriate segregation of duties, that there are appropriate internal 
review processes, that the Group’s accounting policies are 
appropriate and clearly communicated, and that the Group’s 
accounting and consolidation systems are also appropriate. 

The Committee assists the Board in undertaking its assessment 
that the Annual Report is, taken as a whole, fair, balanced and 
understandable, and provides the necessary information to allow 
shareholders to assess the Group’s position and performance, 
business model and strategy. As part of this assessment, we use our 
detailed knowledge of the financial results and the key accounting 
judgements applied in the financial statements to ensure that the tone 
and content of the narrative reporting fairly reflects the financial 
results for the year.

We also review the going concern basis adopted in the financial 
statements, as well as the detailed long-term viability statement 
contained within the Annual Report.

91

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: AUDIT AND RISK COMMITTEE REPORT CONTINUED

Q. What were the significant accounting issues in relation 
to the financial statements considered by the Committee 
during 2017?

The main accounting issues considered in detail by the Committee 
in respect of the 2017 financial statements were:

 − Asset valuations: we have considered whether there were any 
indicators of impairment (or reversal of previous impairments) 
at the Group’s operations, and concluded that there were not. 
Accordingly, we have not performed any impairment reviews 
in respect of the Group’s assets at the 2017 year end. As part of 
this consideration we have taken into account the general copper 
market environment, which has shown some improvement 
in the near-term outlook, as reflected in the copper price 
as at 31 December 2017 of around $3.25/lb, compared with 
approximately $2.50/lb as at 31 December 2016. We also 
considered the specific operating performance of the Group’s 
businesses, which have generally performed in line with 
expectations during 2017.
+ Further details in respect of the valuation and sensitivity of the Group’s 

assets is set out in Note 4 to the financial statements

 − Twin Metals: we have reviewed the developments in respect  
of the renewal of two of the project’s mining leases, and the  
potential impact of this on the carrying value of the project’s  
assets. In December 2017 the US Department of the Interior 
(“DOI”) confirmed Twin Metals’ right to renew the leases. This 
replaced the DOI’s previous legal opinion from March 2016,  
which had served as the basis for the December 2016 action by  
the Bureau of Land Management and the US Forest Service to 
deny the renewal of the two leases. This positive legal development, 
along with consideration of the current forecasts of the potential 
value to be generated by the project, supported the conclusion  
that no adjustment to the carrying value of the project’s assets  
was necessary.

 − Inventories: we keep the Group’s inventory balances under close 
review. This reflects a combination of the value of the inventories, 
the long-term nature of some of the balances, and also the fact that 
the monitoring of mining work-in-progress inventories, particularly 
in respect of leaching processes, can be relatively complex. We 
monitor the specific accounting policies applied to the inventory 
balances, the level of headroom indicated by net realisable value 
tests, the forecast future movements in the value of the balances 
and any other specific issues which may arise. These reviews have 
not indicated any concerns with the carrying value of the Group’s 
inventory balances as at 31 December 2017.

EXTERNAL AUDIT

Q. What are the Committee’s activities in respect of the 

external audit process?

The Committee is responsible for overseeing Antofagasta’s 
relationship with PwC, the Group’s external auditor. I have a key 
direct relationship with Jason Burkitt, the lead PwC audit partner. 
We review and approve the scope of the external audit, the terms 
of engagement and fees. The Committee monitors the effectiveness 
of the audit process and we are responsible for ensuring the 
independence of the external auditor. We also make recommendations 
to the Board in respect of the appointment, reappointment or removal 
of the external auditor. The Committee formally meets with PwC 
without management present at least once a year.

Q. How long has PwC been the Group’s auditor?
PwC has been our external auditor for three years. We carried out a 
tender process during 2014, which resulted in PwC being appointed 
with effect from 2015 onwards. In line with the relevant regulatory 
guidance, we would expect to undertake a tender process in respect 
of the external audit at least every ten years.

Q. How do you assess the effectiveness of the external 

audit process?

The Committee considered the following factors as part of its review 
of the effectiveness of the external audit process during the year:

 − the appropriateness of the proposed audit plan, the significant 
risk areas and areas of focus, and the effective performance 
of the audit

 − the technical skills and industry experience of the audit engagement 

partner and the wider audit team

 − the quality of the external auditor’s reporting to the Committee

 − the effectiveness of the co-ordination between the UK and Chilean 

audit teams

 − the effectiveness of the interaction and relationship between the 

Group’s management and the external auditor

 − feedback from management in respect of the effectiveness of the 
audit processes for the individual operations and the Group overall

 − the review of reports from the external auditor detailing its own 

internal quality control procedures, as well as its annual 
transparency report

 − the results of the review of PwC’s 2016 audit by the Audit Quality 
Review team of the UK’s Financial Reporting Council, including the 
main findings and any impact on the 2017 year-end audit.

In light of this assessment, the Committee considers it appropriate 
that PwC be reappointed as external auditor.

The Statutory Audit Services for Large Companies Market 
Investigation (Mandatory Use of Competitive Tender Processes 
and Audit Committee Responsibilities) Order 2014 – statement 
of compliance:

The Company confirms that it complied with the provisions of the 
Competition and Markets Authority’s Order for the financial year 
under review.

92

Antofagasta plc Annual Report 2017INTERNAL AUDIT

Q. What are the Committee’s main activities in relation 

to internal audit?

The Committee monitors and reviews the effectiveness of the Group’s 
Internal Audit function. The Head of Internal Audit reports directly 
to the Committee and meets with us without management present 
at least once a year. 

The Committee reviews and approves internal audit’s plan of work 
for the coming year, including the department’s budget, headcount 
and other resources. We make sure there are sufficient resources 
in the plan to allow for special reviews which may be required 
during the year.

We also monitor the resources available to the internal audit team to 
make sure it has the right mix of skills and experience. internal audit 
utilises a mix of permanent team members, temporary secondees 
from elsewhere in the Group and third parties, particularly for areas 
such as IT-related reviews. The permanent team includes members 
with specific expertise in some of the most relevant areas for the 
Group, including mining technical experience, IT and sustainability.

Internal audit presents summaries of the key findings from the 
reviews conducted during the year to the Committee. All Internal 
Audit reports are distributed to the Committee members once they 
have been finalised.

The Committee monitors the interaction between internal audit and 
PwC, to ensure an efficient relationship between the internal and 
external audit processes, avoiding duplication of work, and ensuring 
the effective and timely sharing of findings.

RISK MANAGEMENT AND INTERNAL CONTROL

Q. What are the Committee’s main activities in relation to risk 

management and internal control?

The Committee plays an important role in assisting the Board with its 
responsibilities in respect of risk management and related controls. 
The Board has ultimate responsibility for overseeing the Group’s 
principal risks, as well as for maintaining control systems. Our internal 
control systems are designed to identify and manage, rather than 
eliminate, the risk of failure to achieve our business objectives, and 
can only provide reasonable, and not absolute, assurance against 
material misstatement or loss. The Committee assists the Board with 
its assessment of the Group’s principal risks and its review of the 
effectiveness of the risk management process.

INDEPENDENCE AND OBJECTIVITY OF THE EXTERNAL AUDITOR
The Committee monitors the external auditor’s independence and 
objectivity. The Company has a policy in place that aims to safeguard 
the independence and objectivity of the external auditor. This includes 
measures in respect of the potential employment of former auditors, 
the types of non-audit services that the external auditor may and may 
not provide to the Group, and the approval process in respect of 
permitted non-audit services.

An updated policy has been applied from 1 January 2017, reflecting 
the implementation of the EU Audit Regulation and Directive. The 
policy specifies services which the external auditor may not provide 
to any Group entity. This includes any services which involve playing 
any part in the management or decision-making of the entity, 
preparing accounting records and financial statements and designing 
or implementing internal control procedures relating to the 
preparation of financial information. In addition, a number of more 
specific services are prohibited, including internal audit services, 
valuation services which would have a material effect on the financial 
statements and the preparation of material tax calculations. The policy 
also includes “blacklisted” services which may not be provided to 
Antofagasta plc or its subsidiaries within the European Union (EU) – 
for instance, virtually all services in respect of taxation are prohibited.

The policy also requires prior approval by the Committee for all 
non-audit services, other than services which are considered to be 
clearly trivial, which the Committee has defined as being services with 
fees of not more than $25,000. In addition to this pre-approval 
process for specific non-audit services, the Audit and Risk Committee 
also monitors the total level of non-audit services provided by the 
external auditor to ensure that neither the auditor’s objectivity nor 
its independence is put at risk.

A breakdown of the audit and non-audit fees is disclosed in Note 7 
to the financial statements. The Company’s external auditor, PwC, has 
provided non-audit services (excluding audit-related services) which 
amounted to $274,000, or 17% of the fees for audit and audit-related 
services. This mainly related to the following services:

 − assisting with the assessment of the maturity of the Group’s risk 
management process and the updated review of the Group’s risk 
appetite and risk tolerance

 − due diligence services provided to an associate of the Group

 − assurance services in respect of the Group’s sustainability 

reporting

 − tax advisory services provided to Group companies outside the EU.

In general, where the external auditor is selected to provide non-audit 
services it is because it is considered to have specific expertise or 
experience in the relevant area which means they it is most suitable 
provider of those services. The Committee has reviewed the level of 
these services in the course of the year and is confident that the 
objectivity and independence of the auditor is not impaired by reason 
of such non-audit work.

The external auditor provides a report to the Committee at least once 
a year, setting out its firm’s policies and procedures for maintaining 
its independence.

The Committee considers that PwC remained independent and 
objective throughout 2017.

93

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: AUDIT AND RISK COMMITTEE REPORT CONTINUED

Q. What were the Committee’s main activities in 2017 

Q. How does the Committee interact with the Board 

relating to risk?

and other Committees?

The Risk Management function presents to the Committee several 
times during the year, covering developments in the Group’s risk 
management processes and Group-level strategic risks. The General 
Managers of the Group’s operations present to the Committee at least 
once a year, covering their assessments of their respective 
operation’s key potential risks and any significant materialised risks. 
The analysis of key risks includes an assessment of the significance 
of the risks based on the probability of the risk materialising and the 
potential economic impact of the risk, as well as an evaluation of the 
quality of the controls in place in respect of those specific risks. We 
also look at whether those risks have been increasing or decreasing 
in significance. The General Managers present their forecast of any 
expected change in key risks over the coming 12 months. If there is 
a specific issue at one of the operations that requires more detailed 
understanding, we will ask the General Manager to attend the next 
meeting to discuss that issue. I find this direct interaction between 
the Committee and the General Managers extremely valuable – not 
only in terms of the direct insight into each operation it affords the 
Committee, but also in allowing us to convey the importance we 
attach to strong risk management processes.

The Committee also reviewed the principal cyber security risks 
facing the Group, and the main control activities undertaken to 
address those risks.

During 2017 the Group commenced work on an updated assessment 
of the maturity of the Group’s risk management process, and we have 
been monitoring the progress of this activity.
+ Further information relating to the Group’s key risks and risk management 
processes is given in the Risk Management section of the Strategic Report 
on pages to 16 and 17

I report to the Board following each Committee meeting, summarising 
the main matters reviewed by the Committee. These regular reports 
allow Directors to understand the main issues under consideration, 
and, when relevant, to discuss these matters in more detail with 
the Board.

The Risk Management function also presents directly to the Board, 
providing updates of the analysis of the Group’s key risks and relevant 
developments in the risk management and compliance processes. 
We try to ensure that the review of risk by the Board is not 
compartmentalised into isolated sessions, but permeates everything 
that the Board considers. To this end, operating update which the 
CEO provides to the Board at each meeting covers any significant 
materialised risks, and all proposals which are presented to the Board 
incorporate an analysis of the principal risks relevant to the proposal.

These processes have assisted the Board in carrying out a robust 
assessment of the principal risks facing the Company, including those 
that would threaten its business model, future performance, solvency 
or liquidity, and to assess the acceptability of the level of risks that 
arise from the Group’s operations and development activities. During 
2017 we commenced work on an updated review of the Group’s risk 
appetite and risk tolerance. This is a Board-led process, with the 
Committee assisting in monitoring the progress of this work.

Each year the Board, with the support of the Committee, reviews the 
effectiveness of the Group’s risk management and internal control 
systems. The review covers all material controls, including financial, 
operating and compliance controls. No significant failures or 
weaknesses were identified as a result of this review during 2017.

As I explained earlier, from the start of 2017 we now have 
members of the Audit and Risk Committee participating on the 
Projects Committee and the Sustainability and Stakeholder 
Management Committee, which allows close co-ordination between 
these Committees.

AUDIT AND RISK COMMITTEE, BOARD AND RISK MANAGEMENT FUNCTION INTERACTION

BOARD 
The Chairman of the Audit and Risk Committee reports to the 
Board following each Committee meeting, allowing a wider 
discussion of the risk and compliance issues reviewed in 
detail by the Committee

AUDIT AND RISK COMMITTEE
The Committee supports the Board in its review of the 
effectiveness of the Group’s risk management and internal 
control systems

GENERAL MANAGERS OF THE OPERATIONS 
The General Managers give detailed presentations to the 
Committee at least once a year, including on each operation’s 
key risks and materialised risks

94

The Risk Management function 
provides regular presentations 
covering changes in the Group’s key 
risks, major materialised risks, and 
updates on the risk management and 
compliance processes

RISK MANAGEMENT FUNCTION 
There are detailed presentations at 
each Committee meeting covering 
the risk management process, details 
of significant whistleblowing reports, 
and updates in respect of compliance 
processes and activities

Antofagasta plc Annual Report 2017 
COMPLIANCE

Q. What are the Committee’s main responsibilities relating 

to compliance?

The Committee ensures that appropriate compliance policies and 
procedures are observed throughout the Group. The Group’s Risk 
Management function makes regular presentations to the Committee 
covering developments in the Group’s compliance processes and 
significant compliance issues.

Chilean law requires the Group to appoint a Crime Prevention Officer. 
The Committee is responsible for making recommendations to the 
Board in respect of the appointment of the Crime Prevention Officer, 
and monitors and oversees the performance of the role. The Crime 
Prevention Officer is currently Alfredo Atucha, the CFO. The 
Committee receives reports from the Risk Management function in 
respect of the Group’s crime prevention model, in accordance with 
Chilean and UK anti-corruption legislation.

Q. What were the Committee’s main activities in 2017 relating 

to compliance?

The Committee reviewed the Group’s whistleblowing arrangements, 
which enable employees and contractors to raise concerns about 
possible improprieties or non-compliance with the Group’s Code 
of Ethics in confidence. This is important to allow any potential issues 
to be raised. We received regular reports on any reported 
whistleblowing incidents, which detail the number and type of 
incidents, along with details of the most significant ones and the 
actions resulting from their investigation.

We reviewed updates in respect of the conflict of interest  
declarations by the Group’s employees and suppliers, as well as 
details of the Group’s limited relationships with politically exposed 
persons (ie individuals who hold prominent public positions). We also 
reviewed details of the compliance training undertaken by the Group’s 
employees during the year.

Ollie Oliveira 
Chairman of the Audit and Risk Committee

95

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: SUSTAINABILITY AND STAKEHOLDER MANAGEMENT COMMITTEE REPORT

“Commitments must be fulfilled.  
That is, and must be, the mind‑set  
of the Sustainability and Stakeholder 
Management Committee, the Board  
and the whole Group.”

Vivianne Blanlot, Chairman

2017 MEMBERSHIP AND MEETING ATTENDANCE

Vivianne Blanlot (Chairman)
Jorge Bande 

Juan Claro1

William Hayes

Number  
attended

8/8
8/8

7/8

8/8

1.  Juan Claro was unable to attend one Committee meeting during the  

year. Nevertheless, he reviewed Committee papers, provided comments 
to the Chairman ahead of the meeting and validated meeting minutes.

KEY RESPONSIBILITIES
The Sustainability and Stakeholder Management Committee assists 
the Board in the stewardship of the Group’s social responsibility 
programmes and makes recommendations to the Board to ensure 
that ethical, safety and health, environmental, social and community 
considerations are taken into account in the Board’s deliberations.

 − Other regular attendees include the CEO, the Vice President 
of Corporate Affairs and Sustainability and the Secretary 
to the Board.

 − Effective 1 January 2017, Ramón Jara and Tim Baker rotated 
off the Committee, Vivianne Blanlot assumed the Committee 
Chairmanship, and William Hayes and Jorge Bande joined 
the Committee.

 − The Committee meets as necessary and at least twice per year.

The Committee provides guidance to the Board in relation 
to sustainability matters, reviewing and updating the Group’s 
framework of strategies and policies (including safety and health, 
environmental, climate change, human rights, community and other 
stakeholder issues), while monitoring and reviewing the Group’s 
performance in respect of sustainability matters, indicators 
and targets.

KEY ACTIVITIES IN 2017

Policies and 
 commitments

Safety and  
health

Community  
relations

Environment 

 − Reviewed the 2017 

Antofagasta Minerals 
Sustainability Report.

 − Reviewed and endorsed a 

new Group-wide sustainability 
policy.

 − Reviewed sustainability 
aspects of the Group’s 
development projects at Los 
Pelambres and Centinela.

 − Monitored the continued 

 − Evaluated the Group’s 

 − Reviewed the new 

environmental management 
system and monitored its 
deployment.

 − Reviewed the Group’s 

environmental compliance 
programme.

deployment of the Group’s 
safety and occupational health 
strategy.

 − Monitored the work 

conducted by the Independent 
Technical Review Board 
appointed to advise Los 
Pelambres in the operation 
of the Mauro tailings deposit.

 − Reviewed a risk and safety 
analysis of the transport 
division which included the 
launch of a fatigue and 
somnolence programme for 
train and truck operators and 
a review of all 356 railway 
crossings.

community and stakeholder 
relations model, “Somos 
Choapa”, and monitored its 
deployment.

 − Reviewed a new 

Communications and Public 
Affairs strategy.

 − Reviewed plans to set up 
a technical training centre 
at Los Vilos in partnership 
with a technical education 
specialist.

 − Reviewed an externally-

facilitated evaluation of the 
Somos Choapa community 
relations programme, whose 
recommendations are being 
incorporated in the Group’s 
processes and procedures.

96

Antofagasta plc Annual Report 2017 
COMMITMENT TO 
STAKEHOLDERS

The Committee discusses topics and issues that are raised by the Group’s stakeholders 
and ensures that they are considered as part of the Board’s deliberations. 

Q. How does the Committee ensure that the Board takes into 

Q. Significant progress has been made in relation to 

account the views and interests of stakeholders? 

The Committee met on eight occasions in 2017 and these sessions 
were regularly attended by Directors who are not Committee 
members, including the Chairman of the Board. 

Committee meetings provide a forum for more detailed discussion  
of the key issues that matter for our workforce (such as safety 
and health), local communities and other stakeholders. As Chairman 
of the Committee, I report on the Committee’s deliberations at the 
beginning of each Board meeting and, along with fellow Committee 
members, ensure that these are incorporated into the Board’s 
wider deliberations.
+ Further details on how the Board listens to and engages with stakeholders 

are set out on pages 98 and 99

Q. What were the key achievements overseen by the 

Committee during the year? 

We are extremely pleased that there were no fatal accidents during 
the year. We believe that the systematic and thorough application 
of safety standards and high levels of near-miss reporting by our 
operating companies has significantly contributed towards this 
outcome and we will continue to focus on these standards and 
reporting in our pursuit of a fatality-free working environment.

Work on the Environmental Impact Assessment (EIA) for the Los 
Pelambres Incremental Expansion project progressed during the year 
and the EIA was approved in February 2018. Preparatory work is also 
underway towards the submission of an EIA that would extend 
Zaldívar’s mine life until 2029. 

The number of environmental commitments across the Group 
continues to grow and currently stands at 6,745. The Committee 
has focused on instilling recognition of the importance of fulfilling 
these commitments and seeking new approvals when new conditions 
or new technology require a practical adjustment to commitments 
previously given. During the year the Committee reviewed an 
externally-facilitated gap analysis of the Group’s environmental 
commitments and an internally-driven gap closure plan which 
was presented to, and approved by, the Chilean 
Environmental Superintendency. 

community relations at Los Pelambres. What about 
stakeholders elsewhere in the Group?

The future of our operating companies depends on committed  
and sustained collaboration with neighbouring communities and  
local, regional and national governments. During 2017, the Committee 
oversaw an evaluation of the Somos Choapa model as implemented  
at Los Pelambres and the lessons learned from this programme  
are being used to assist with the deployment of similar models at  
the other mining operations and at the transport division. The model 
has attracted the attention of other organisations as a possible  
best practice in stakeholder relations and the addressing of 
community issues.

Q. What are the Committee’s priorities in 2018?
 − Our number one priority continues to be the safety and health  
of our workforce. Meeting the Group’s target of zero fatalities 
requires relentless application of the Group’s safety standards  
and verification, monitoring and reporting by the Group’s operating 
companies. We will continue to closely monitor safety performance 
and the work being done across the Group to take occupational 
health processes to the same level of maturity as the Group’s 
safety standards and processes.

 − The Committee will continue to monitor the implementation  

of the Group’s environmental management system by the operating 
Group companies responsible. The fulfilment of commitments by 
our operating companies is the foundation of our licence to operate.

 − Work is under way to update climate change mitigation actions  

and associated carbon footprint metrics and measurable targets for 
reduced CO2 emissions were recently adopted as explained 
on page 63.

 − A good long-term relationship with our neighbours is built day by 
day. The Committee will continue to monitor the implementation  
of the Group’s social programmes and the work that is being done 
with the communities near our operations.

Vivianne Blanlot
Chairman of the Sustainability and Stakeholder Management 
Committee

97

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: STAKEHOLDER ENGAGEMENT

HOW WE LISTEN AND 
ENGAGE WITH OUR 
STAKEHOLDERS

Successful relationships with stakeholders are essential to the long‑term success of 
the Group. The Group has a network of arrangements in place to ensure that the views 
and interests of stakeholders are represented in the Boardroom and considered as part 
of the Board’s deliberations.

Why we engage
Constructive relationships 
built on mutual respect 
and transparency help the 
Group to retain employees 
and avoid labour disputes, 
contributing to greater 
productivity and business 
efficiency.

How we engage
 −  Site visits

 −  Quarterly on-site 

CEO updates

 −  Engagement surveys

 −  On-site reviews

 −  Regular meetings 

with unions

WORKFORCE
The Group has a 
workforce of 
approximately 21,000 
people working at its 
operations, on projects, 
in exploration and at the 
Group’s corporate offices. 
More than 99% of the 
workforce are based in 
Chile and more than 95% 
work at the Group’s 
operations.

LOCAL COMMUNITIES
Our activities naturally 
affect local communities 
and we strive to prevent, 
mitigate and compensate 
for any adverse impact 
that these activities 
may have. 

Why we engage
The wellbeing of our local 
communities is a direct 
enabler of our business 
success and we are 
convinced that our 
activities bring 
opportunities for national 
and local development. 

How we engage
 − Ongoing dialogue 

through the Somos 
Choapa local 
engagement framework, 
as described on 
pages 60 to 61

 − Regular reporting 

of local community 
dialogue to the 
Sustainability 
and Stakeholder 
Management Committee 
and the Board

98

SUSTAINABILITY

FORWARD 
THINKING

CORE

EXCELLENCE

Antofagasta plc Annual Report 2017EMBEDDING CULTURE
As noted in the Chairman’s introduction on page 71, during 
2017 a management committee led by the CEO was established 
to design and implement a cultural reinforcement process 
in consultation with employees.

The Group’s charter of values was critically reviewed and it 
was agreed that these values continued to reflect our industry, 
the nature of our Company and our Chilean culture. As part of 
this exercise it was agreed that the supporting explanations 
and behaviours that align with these values should be updated 
to provide a clearer understanding and alignment with the 
Group’s strategy and the current business environment. 
Further work is also under way to refine the Group’s purpose 

and to ensure that the Group’s values and culture are adopted 
across all levels of the organisation. As was the case when the 
current values were adopted in 2013, the Group’s employees 
were invited to participate in forums to assist with this during 
the fourth quarter of 2017. The deployment of the refreshed 
values and Group purpose will be completed in 2018.

The Board set the tone for this process during a dedicated 
session held as part of the Board’s strategy discussion in 
June. Progress since then has been overseen by the 
Remuneration and Talent Management Committee and final 
actions will be reported to the Board during 2018.

SAFETY 
AND HEALTH

VALUES RESPECT

INNOVATION

CUSTOMERS
The majority of our sales 
are to industrial 
customers who refine 
or further process the 
copper concentrate and 
cathodes that we sell. 
Most sales are made 
under long-term 
framework agreements 
or annual contracts with 
sales volumes agreed for 
the following year.

Why we engage
The majority of the 
Group’s sales are based 
on long-term customer 
relationships and 
commitments. Without 
these long-term 
relationships, the Group 
would be required to sell 
a greater proportion of 
cathodes and concentrate 
on the spot market, which 
entails greater uncertainty 
around pricing and 
volumes that may be sold.

How we engage
 −  Major customers are 
equity holders in our 
mining operations

 −  Annual trip to Japan 
by the Chairman and 
several Directors to 
meet our partners

 −  Marketing team 

regularly meet with 
customers around the 
world 

 − Representative 

marketing office 
in Shanghai 

SUPPLIERS
Suppliers provide a large 
range of products and 
services, from grinding 
media to catering.

Why we engage
Suppliers play a critical 
role in the Group’s ability 
to operate safely and 
efficiently. 

How we engage
 − The procurement team 

maintains close 
relationships and 
regularly meets with 
suppliers at the 
operations and in 
Santiago

 − The Group encourages 
suppliers to raise any 
issues or concerns  
they have about their 
relationship with the 
Company, their 
contracts or the 
workforce

GOVERNMENTS 
AND REGULATORS
Governments and 
regulators implement 
social policy and set the 
framework within which 
we are required to operate.

Why we engage
Mining is a long-term 
business and timescales 
can run into decades. 
Political cycles are 
typically far shorter and 
material developments 
and changes to policy, 
legislation or regulations 
can have a major impact 
on the Group’s business.

How we engage
 − We work with industry 
bodies to engage with 
governments on public 
policy, laws, regulations 
and procedures that 
may affect our business

 − We provide broad-based 

explanations of the 
activities of mining 
companies to the public 

99

antofagasta.co.ukGOVERNANCEACCOUNTABILITY: PROJECTS COMMITTEE REPORT

“The Projects Committee oversees the 
full project lifecycle, from concept to  
start of operations, carefully assessing, 
through robust challenge, investment 
proposals prior to submission to 
the Board.”

Ollie Oliveira, Chairman

2017 MEMBERSHIP AND MEETING ATTENDANCE

Number  
attended

 − Other regular attendees include the CEO, Projects Vice President, 

Projects Finance Manager and Secretary to the Board. 

Ollie Oliveira (Chairman)
Tim Baker 1

Jorge Bande 

Ramón Jara

8/8
7/8

8/8

8/8

1.  Tim Baker was unable to attend one Committee meeting during the year 

because of a commitment outside Chile. Nevertheless, he reviewed Committee 
papers, sent questions and detailed comments to the Chairman and Committee 
members ahead of the meeting and validated meeting minutes.

KEY RESPONSIBILITIES
The Projects Committee reviews all aspects of projects to be 
submitted for Board approval, highlighting key matters throughout 
the project lifecycle for the Board’s consideration and making 
recommendations to management to ensure that all projects 
submitted to the Board are aligned with the Group’s strategy 
and risk appetite.

KEY ACTIVITIES IN 2017

 − Effective 1 January 2017, Ramón Jara joined the Committee.

 − The Committee meets as necessary and at least twice per year.

The Committee adds an important level of governance and control 
to the evaluation of the Group’s projects, and plays a key role in 
providing the Board with additional oversight of the projects 
portfolio, development proposals, milestones and performance 
against key indicators.

Policies and  
commitments

Projects in study/ 
execution phase

Lessons learned  
from projects

 − Reviewed the Group’s mining projects 
portfolio including budget and schedule.

 − Reviewed the Los Pelambres Incremental 

 − Reviewed Antucoya’s dust control status 

Expansion project, Phases 1 and 2. 

and work plan.

 − Reviewed risk management methodology 

 − Reviewed the Centinela Second 

used in project development.

Concentrator project and an alternative 
plan to expand the existing concentrator.

 − Reviewed the Encuentro Oxides project.

 − Reviewed the Molybdenum Plant project.

100

Antofagasta plc Annual Report 2017 
THOROUGH 
PROJECT REVIEW

The Committee supports the Board to ensure that deliberations across projects are 
focused on comparable metrics and that project execution decisions are in the long‑term 
interests of the Company.

Q. What is the balance between decisions made by the 

Projects Committee and decisions made by the Board?
The Committee is not responsible for approving projects – that is for 
the Board to decide. Our role is to assist the Board by ensuring that 
projects follow a standard, structured process with consistent 
analysis, execution and evaluation practices. As part of its review, 
the Committee invites management to consider different perspectives, 
ideas and improvements to enhance the value of the Group’s projects, 
enabling a focused discussion within the Board.

CENTINELA 
The Committee reviewed progress on the Centinela Second 
Concentrator project’s feasibility study, including a detailed review 
of crushing and grinding technology alternatives.

The Committee also reviewed a scoping study on an alternative 
expansion plan for Centinela with lower investment, taking advantage 
of the optimisation of the current tailings deposit, to be studied in 
parallel with the Second Concentrator feasibility study. The Committee 
reviewed strategic options for Centinela’s water pipeline.

The Committee reviewed the Encuentro Oxides project, including 
construction and pre-commissioning activities and the 
commissioning plan.

The Committee reviewed the Molybdenum Plant project, including 
construction and pre-commissioning activities, the commissioning 
plan and the engineering procurement and construction contract.

ANTUCOYA
As a lesson for future projects, the Committee reviewed Antucoya’s 
dust control status and work plan, assessing how this issue could 
have been identified and mitigated during project development.

In 2018, the Committee will review close-out reports to derive lessons 
learned from the Encuentro Oxides and Molybdenum Plant projects. 

Q. What are the Committee’s priorities in 2018?
 − To carefully assess progress of the Los Pelambres and Centinela 
expansion projects, particularly with respect to critical path items 
for investment decisions.

 − To review the Twin Metals project and projects at Zaldívar and the 

transport division.

 − To continue to review and further enhance the ADS framework. 

Ollie Oliveira
Chairman of the Projects Committee

Q. What tools does the Committee use?
The Committee provides guidance to each project manager from the 
early stages of project planning through completion, to ensure that 
policies, strategies, and the Group’s standard ADS implementation 
framework are applied. 

ADS is a project management system whose processes and practices 
are widely used in the mining industry. ADS defines standards and 
common criteria, including governance by a steering committee, 
functional quality assurance reviews and risk management.

Q. What were the Committee’s key activities in 2017?
The Committee reviewed the risk management methodology applied 
to project development from the scoping study stage to project 
execution, which includes risk identification, analysis, assessment and 
control. The risk chapter for each feasibility study is formally assessed 
during the functional quality assurance review carried out after the 
completion of the feasibility study. In addition, the corporate projects 
team ensures that interconnectivity of risk is appropriately covered 
and this was discussed with the Committee in relation to the Group’s 
projects during 2017.

LOS PELAMBRES 
The Committee reviewed the feasibility study results for Phase 
I of the Los Pelambres Incremental Expansion project as well 
as the functional quality assurance review, Environmental Impact 
Assessment progress, technical permitting matters, detailed 
engineering, vendor and contracting strategy, project execution plan, 
and co-ordination with the community relations team. A special area 
of focus was the planned operation of the desalination plant including 
testing potential cost savings.

The Committee also reviewed Phase 2 of the Los Pelambres 
Incremental Expansion project, including the work plan and budget for 
a feasibility study for the plant expansion, the increase in capacity of 
the Mauro tailings dam and tailings disposal alternatives, waste dumps 
and stability, bottleneck analysis, mining and environmental plans. An 
Environmental Impact Assessment is planned for submission in 2018. 

101

antofagasta.co.ukGOVERNANCEREMUNERATION: REMUNERATION AND TALENT MANAGEMENT COMMITTEE REPORT

“The Committee is focused on ensuring 
that the Group’s remuneration and talent 
management arrangements support the 
Group’s objective of generating value for 
stakeholders in a safe and sustainable 
way through the commodity cycle.”

Tim Baker, Chairman

2017 MEMBERSHIP AND MEETING ATTENDANCE

Tim Baker (Chairman)
Vivianne Blanlot 
Francisca Castro 

 − Other regular attendees include the CEO, Vice President 
of Human Resources, Company Secretary and Secretary 
to the Board.

Number 
attended

6/6
6/6
6/6

 − Effective 1 January 2017, William Hayes and Ollie Oliveira rotated 
off the Committee and Vivianne Blanlot and Francisca Castro 
joined the Committee. 

 − The Committee held a special session in London in May 2017  
with internal and external advisers to review the latest trends 
in executive remuneration, reporting and shareholder feedback 
in the lead-up to the 2017 AGM.

 − The Committee meets as necessary and at least twice per year.

 − All Committee members are independent.

KEY RESPONSIBILITIES
The Remuneration and Talent Management Committee ensures  
that the Group’s remuneration arrangements support the effective 
implementation of the Group’s strategy and enable the recruitment, 
motivation and retention of talent.

The Committee is responsible for setting the remuneration for 
the Chairman and the CEO and for monitoring the compensation 

KEY ACTIVITIES IN 2017

strategy, level, structure and outcomes for the Executive Committee. 

The Committee is actively involved in the talent management 
strategy for the Group’s senior management, including the 
implementation and review of succession plans for members 
of the Executive Committee (excluding the CEO). 

Directors’ 
remuneration

Executive  
remuneration

Human resources  
and policy

Talent management and 
succession planning

 − Evaluated Chairman, Director 

 − Evaluated the CEO's 

 − Oversaw a review of the 

 − Reviewed the Group’s  

and Committee fees.

 − Reviewed the 2016 Directors' 
Remuneration Report prior 
to its approval by the Board 
and subsequent approval 
by shareholders at the 
2017 AGM.

 − Reviewed the 2017 Directors' 
Remuneration Policy prior 
to its approval by the Board 
and subsequent approval 
by shareholders at the 
2017 AGM.

talent management strategy 
and succession plans for 
members of the Executive 
Committee (excluding the 
CEO).

 − Approved the implementation 

of succession plans and 
revisions to the composition 
of the Executive Committee 
including the appointment of 
the Vice President Corporate 
Affairs and Sustainability, 
Vice President of Projects 
and new General Managers  
at Los Pelambres, Antucoya 
and Zaldívar. 

performance and determined 
the variable compensation 
payable under the 2016 
Annual Bonus Plan.
 − Oversaw a fundamental 

review of the Group’s Annual 
Bonus Plan and LTIP and 
recommended changes to the 
Board for approval.

 − Reviewed LTIP eligibility, 

participants and criteria and 
approved the grant of 2017 
awards.

 − Reviewed performance for 

LTIP awards granted in 2014 
and approved vesting.

 − Reviewed Group performance 

against the 2016 Annual 
Bonus Plan performance 
metrics and reviewed the 
metrics to apply to the  
2017 Annual Bonus Plan.
 − Reviewed and approved the 

individual performance of the 
members of the Executive 
Committee under the 2016 
Annual Bonus Plan.

Group's values in line with 
an initiative to strengthen 
the Group’s organisational 
culture. 

 − Oversaw the conclusion of 
the functional simplification 
programme, which involved 
the centralisation of support 
functions.

 − Oversaw the design and 

implementation of the Group's 
new operating model, which 
is now standardised across 
the Group's operations.
 − Reviewed compensation 

across the Group to ensure 
that it remains competitive, 
motivating and appropriately 
aligned with the Group’s 
performance and strategy.

 − Monitored collective 

bargaining negotiations at  
Los Pelambres. Centinela  
and Zaldívar.

102

Antofagasta plc Annual Report 2017 
REMUNERATION AND 
TALENT MANAGEMENT

The Committee is currently overseeing a number of significant strategic initiatives 
including those focused on culture and diversity and inclusion.

Dear Shareholder,

As set out in the Chairman’s and CEO’s introductory letters and the 
Group’s performance highlights on the opening pages of this Annual 
Report, 2017 was a strong year for the Group. 

Our most pleasing achievement during the year was ensuring that 
there were no fatalities. On top of that, our operating performance was 
in line with guidance, two key project milestones were achieved with 
first production achieved for the Encuentro Oxides project and the 
commencement of commissioning for the Centinela Molybdenum Plant 
project, and we made significant progress on a number of cultural 
and qualitative initiatives which are described in more detail below. 

The Committee has a broad oversight role in relation to the Group’s 
remuneration and talent management arrangements and all Group 
employees, including the CEO, participate in the Annual Bonus Plan 
which, alongside individual performance, takes into account Group 
performance against criteria set at the beginning of each year. Since 
2016, the Group’s performance score under the Annual Bonus Plan  
is subject to an automatic adjustment of 15% downwards if there 
is a fatality during the year and 15% upwards if there are no fatalities 
during the year. 

The Committee was very pleased to endorse the automatic 15% 
upwards adjustment for the 2017 Annual Bonus Plan in recognition 
of the efforts of all employees to ensure that there were no fatalities 
during the year. The Committee continues to support the Sustainability 
and Stakeholder Management Committee and the Board in their 
oversight of the performance of the Group’s safety and health risk 
management processes through incentives in the Group’s Annual 
Bonus Plan that relate specifically to safety and health performance 
and through oversight of the Group’s cultural reinforcement 
programme, which includes safety as a core value.

AREAS OF FOCUS FOR THE COMMITTEE IN 2017
2017 was another busy year for the Committee. I was very  
pleased that Vivianne Blanlot and Francisca Castro agreed to join  
the Committee on 1 January 2017 and would like to thank William 
Hayes and Ollie Oliveira for their significant contributions to the 
Committee over a number of years. Between us, at least one 
Committee member serves on each of the other Board Committees 
which allows us to take into account strategic priorities and the views 
of all stakeholders in our deliberations.

As noted by the Chairman on page 71, the Committee is currently 
overseeing two of the Group’s most significant strategic initiatives: 
the cultural reinforcement programme and the diversity and inclusion 
programme. These programmes depend on each other to succeed 
and strong leadership from the Board and the Committee is required 
to ensure that our inclusive culture and values are entrenched in the 
actions of all of our employees and the wider workforce. We all 
benefit from the increased levels of productivity, innovation and 
employee engagement that come with more diverse and inclusive 
workplaces. As noted in the Nomination and Governance Committee 
report on page 87, metrics for the design and implementation of the 
diversity and inclusion programme were included in the Group’s 2017 
Annual Bonus Plan and I am pleased to report that metrics for this 
programme will again be included in the 2018 Annual Bonus Plan.

The Committee has also overseen significant initiatives aimed at 
improving the reliability and performance of the Group’s mining 
operations: the conclusion of the functional simplification programme, 
which centralised certain functions that support our mining operations 
(including finance, human resources, legal and external affairs and 
sustainability), and the implementation of the Group’s new operating 
model. The purpose of the new operating model is to improve safety, 
reliability and profitability by implementing a standard model at each 
of the Group’s mining operations, balancing the focus on operations, 
maintenance, planning and operating excellence, and we fully expect 
to begin to realise the benefits of this model in 2018.

As noted by the Chairman on page 71, the Committee also 
commissioned a fundamental review of the Group’s remuneration 
structures during 2017. The aim was to restructure the Annual Bonus 
and Long Term Incentive Plans to make them simpler and better 
understood by employees, to enhance the alignment for all employees 
between remuneration and shareholder returns and to incorporate 
flexibility to allow the Committee to react to any significant change 
either within the Group or externally.

The Committee considered a wide range of proposals and  
assessed the impact of each proposal versus the expected cost of 
implementation. The Committee determined that the fundamental 
structure of both plans continued to be appropriate but that from 2018 
the number of KPIs in the Annual Bonus Plan would be reduced from 
15 to ten and the number of KPIs in the LTIP would be reduced from 
seven to four. Further detail on these changes is set out within the 
2017 Executive Remuneration Report on page 117.

EXECUTIVE REMUNERATION 
Awards under both the LTIP and the Annual Bonus Plan are subject 
to performance against financial and non-financial metrics and take 
into account the interests of the Group’s stakeholders. The Committee 
reviews these metrics at the beginning of the year and, if necessary, 
recommends amendments before recommending the metrics to the 
Board for approval. 

The Group’s performance score for 2017 under the Annual Bonus 
Plan, which forms the basis for calculating 70% of the CEO’s and 
Executive Committee’s annual bonus, was 104.0, within a range of 90 
(Threshold) to 110 (Maximum). This score includes the 15% upwards 
adjustment for zero fatalities described above. A full breakdown 
of performance against each metric is set out on page 113.

At the beginning of this year, the Board and the Committee each 
carefully considered the pay arrangements for Iván Arriagada taking 
into account individual and Group performance, the Group’s current 
strategy and packages available to market peers both internationally 
and in Chile. The findings showed that all elements of the CEO’s 
package were significantly below the FTSE 100 and international 
mining markets, both of which are considered to be talent markets for 
our CEO. The decision was taken to increase his base salary by 10% 
and his target and maximum annual bonus to 67% (from 50%) and 
133% (from 100%) of base salary, respectively. The total potential 
remuneration awarded for 2018 and the total remuneration for 
the lead executive in the Group for the past nine years is shown 
on page 110.

103

antofagasta.co.ukGOVERNANCEREMUNERATION: REMUNERATION AND TALENT MANAGEMENT COMMITTEE CONTINUED

The Committee carefully considered a number of factors when setting 
Iván’s remuneration below the level of his predecessor at the time of 
his appointment in 2016, including broader market conditions and the 
opportunity to increase his remuneration at a later time if his 
performance warranted it. The Board and the Committee are pleased 
to recognise Iván’s performance through this increase, which brings 
his total remuneration package into closer alignment with international 
peers, albeit still towards the lower end of market practice. 

TALENT MANAGEMENT AND SUCCESSION PLANNING
The Committee dedicated a significant amount of time and effort 
towards reviewing the Group’s talent management and succession 
plans during the year. Mining is cyclical and all of our employees work 
in a strong and competitive mining jurisdiction. The work that the 
Committee has put into talent management and succession planning 
in recent years has allowed us to develop common standards across 
all the Group’s operations, promote internally, develop career paths 
within the organisation, and identify and retain key talent. More work 
remains to be done, but significant progress has been made.

The Committee is responsible for reviewing, monitoring and 
recommending the talent management strategy for the Group’s senior 
management. This includes succession plans assessing any changes 
in compensation policies across the Group that may have a significant 
long-term impact on labour costs, and overseeing the Group’s 
compensation and talent management strategies.

In 2017 the Committee reviewed and updated succession plans for the 
Executive Committee (excluding the CEO) and the General Managers 
of each of the Group’s operating companies. This exercise involved 
identifying the individuals within the Group’s talent pool that form part 
of these succession plans and identifying their individual stages of 
readiness and development needs. This ensures that talented 
individuals are available at each stage of the pipeline in the future, 
or if there are unexpected departures. When a key management 
position becomes vacant, a replacement will first be sought from 
within the Group, taking into account the succession plan agreed 
for that position.

REVIEW OF NON-EXECUTIVE 
DIRECTOR AND COMMITTEE FEES
Fee levels for Non-Executive Directors have remained unchanged 
since 2012. The basic Non-Executive Director fee will continue at the 
same level in 2018, however, from 1 April 2018, there will be a $5,000 
per annum increase in Committee Chairman’s fees and a $2,000 per 
annum increase in Committee members’ fees in recognition of the 
considerable additional time commitments and responsibilities attached 
to these roles, which have grown in recent years.

The Committee and the Board also reviewed the fee payable and time 
commitments provided for under Ramón Jara’s service contract, 
which resulted in an exceptional 8% increase to the hourly rate for 
services under this contract with effect from 1 January 2018. This 
contract was last reviewed in 2011 and the adjustments made bring 
the hourly rate into line with the market and reflect the time that 
Ramón Jara commits to the Group under this contract.

Each of these adjustments are in accordance with the 2017 Directors’ 
Remuneration Policy that was approved by shareholders at the 2017 
AGM and further details of which are set out within the 2017 
Directors’ Remuneration Report on pages 106 and 108.

KEY OBJECTIVES FOR THE COMMITTEE IN 2018
The Committee’s objectives for 2018 are to ensure that the 
remuneration policies and structures that are in place contribute 
towards the generation of value for stakeholders in a safe and 
sustainable way.

As set out on page 71, the Committee will continue to oversee 
the implementation of the cultural reinforcement and diversity 
and inclusion programmes and the implementation of the new 
operating model.

Shareholders are invited to vote on the 2017 Directors’ Remuneration 
Report and we trust that there will continue to be strong support for 
the Group’s pay arrangements.

Tim Baker
Chairman of the Remuneration and Talent Management Committee

Q.  WHAT ARRANGEMENT DOES THE COMMITTEE HAVE IN PLACE  

WITH ADVISERS?

During the year, the Committee reappointed remuneration 
consultants Willis Towers Watson to provide advice to the 
Committee on compensation benchmarking, regulatory and 
corporate governance developments and market practice, and to 
advise the Committee in relation to the fundamental review of the 
Group’s executive remuneration structures carried out during the 
year. This reappointment was based on the Committee’s 
satisfaction with advice received in previous years.

Willis Towers Watson is an independent global professional 
services firm that is a signatory to, and adheres to, the Code 
of Conduct for Remuneration Consultants. This can be found 
at www.remunerationconsultantsgroup.com.

The Committee is satisfied that the advice provided by Willis 
Towers Watson in 2017 was objective and independent, that no 
conflict of interest arose as a result of these services and that it 

had no other connection with the Company. Willis Towers 
Watson’s fees for this work were charged in accordance with 
normal billing practices and amounted to £99,671.

The Committee also received assistance from the Chairman, the 
CEO, the Vice President of Human Resources and the Company 
Secretary during 2017, none of whom participated in discussions 
relating to their own remuneration.

The Committee Chairman and the Committee as a whole regularly 
speak with advisers, without management present, to provide a 
forum for open discussion and the sharing of views and opinions 
on compensation issues. Additionally, part of each Committee 
meeting is held without management present to ensure that 
individual views or areas of concern can be debated between 
the Committee members.

104

Antofagasta plc Annual Report 2017REMUNERATION 
AT A GLANCE

REMUNERATION REPORT

2017 Executive Remuneration Report – Voluntary Disclosures

2017 Directors’ 
Remuneration  
Report

2017 Total 
Remuneration  

2017 Annual  
Bonus Plan

Long-Term  
Incentive Plan

p106

p110

p112

p114

Illustration of CEO 
Remuneration  
Policy in 2018

p116

Summary of Directors’ 
Remuneration  
Policy

p118

REMUNERATION PHILOSOPHY AND APPROACH TO REPORTING
The Directors’ Remuneration Policy was approved at the 2017 AGM. This policy applies to Non-Executive Directors and is designed 
to ensure that Non-Executive Directors are fairly rewarded with regard to their responsibilities.

A summary of the policy is set out on pages 118 to 120 and a report on the implementation of that policy in 2017 is set out in the 2017 
Directors’ Remuneration Report on pages 106 to 108.

Although the Directors’ Remuneration Policy does not apply to executives, the Company voluntarily reports the CEO’s remuneration as if 
he were a member of the Board and provides additional information on the structure and components of the other Executive Committee 
members’ and wider Group remuneration in the 2017 Executive Remuneration Report on pages 109 to 117.

The CEO and the Executive Committee receive a base salary and benefits in line with market conditions in Chile and taking into 
consideration international factors, as appropriate. They participate in the Annual Bonus and Long Term Incentive Plans which are 
designed to align remuneration with overall Group performance and promote outcomes which are for the long-term benefit of the Group.

As explained on page 68, market conditions and remuneration structures available in Chile are a central consideration when setting 
executive remuneration and some elements of the Group’s LTIP may therefore differ slightly from arrangements that would typically 
be expected for UK-listed companies.

2017 SHARE PRICE PERFORMANCE
The following graph shows the Company’s performance compared 
with the performance of the FTSE All-Share Index and the 
Euromoney Global Mining Index over a nine-year period, measured 
by total shareholder return.

CEO TOTAL REMUNERATION IN 2017

$2.0m

37%

$1.8m

37%

33%

29%

$1.4m

34%

23%

$0.6m

100%

43%

30%

34%

500

400

300

200

100

0

31/12/08

31/12/09

31/12/10

30/12/11

31/12/12

31/12/13

31/12/14

31/12/15

30/12/16

29/12/17

Minimum

Target

Maximum

Actual

ANTOFAGASTA

FTSE ALL SHARE

EUROMONEY GLOBAL MINING

FIXED ELEMENTS

ANNUAL VARIABLE ELEMENTS

LONG-TERM VARIABLE ELEMENTS

Further details on the selection of these indices and the 
calculations of total shareholder return are set out on page 110.

Maximum, Target and Minimum opportunities reflect the potential 
2017 outcomes using the realised exchange rate, share price and 
inflation adjustments during the year. A detailed breakdown of the 
CEO’s 2017 remuneration is set out in the 2017 Executive 
Remuneration Report on pages 109 to 117.

105

antofagasta.co.ukGOVERNANCE2017 DIRECTORS’ 
REMUNERATION REPORT

INFORMATION INCORPORATED BY 
REFERENCE
The information set out on pages 102 to 120 forms part of (and is 
incorporated by reference into) this 2017 Directors’ Remuneration 
Report, provided that any disclosure relating to the remuneration 
of the CEO and other executives (none of whom is a Director) is 
provided on a voluntary basis and strictly, therefore, does not form 
part of the Directors’ Remuneration Report.

STATEMENT OF SHAREHOLDER VOTING
The table below shows the voting results on the 2017 Directors’ 
Remuneration Policy and on the Company’s 2016 Directors’ 
Remuneration Report at the 2017 AGM:

RESOLUTION TO APPROVE THE 2017 DIRECTORS’ 
REMUNERATION POLICY 
Votes for

Votes against

Votes cast as a percentage  
of issued share capital
Votes withheld

1,080,230,434
99.81%
2,069,669
0.19%

RESOLUTION TO APPROVE THE COMPANY’S 2016 DIRECTORS’ 
REMUNERATION REPORT 
Votes for

Votes against

Votes cast as a percentage  
of issued share capital
Votes withheld

1,081,950,198
99.88%
1,324,778
0.12%

91.35%
87,242

The considerable vote in favour of the 2017 Directors’ Remuneration 
Policy and the Company’s 2016 Directors’ Remuneration Report 
confirms the strong support received from shareholders for the 
Group’s remuneration arrangements in recent years.

IMPLEMENTATION OF THE DIRECTORS’ 
REMUNERATION POLICY IN 2017 

CHAIRMAN
Jean-Paul Luksic was appointed Executive Chairman in 2004 and 
was re-designated as Non-Executive Chairman in 2014. Mr Luksic’s 
total fee in 2017 was $1,000,000, (2016 – $1,000,000) comprising,  
for his services as Chairman of the Board: $730,000 per annum, 
Chairman of the Nomination and Governance Committee: $10,000  
per annum, and as Chairman of the Antofagasta Minerals board: 
$260,000 per annum.

This fee level reflects his responsibility, experience and time 
commitment to the role.

106

91.27%
1,062,115

In addition to Board fees, the Senior Independent Director receives 
an additional fee which reflects his responsibility, experience and time 
commitment to the role.

NON-EXECUTIVE DIRECTORS
There has been no change to Non-Executive Director fees since 
2012. The base Non-Executive Director’s fee in respect of the 
Board remains $130,000 per annum. Given the core role which 
Antofagasta Minerals plays in the management of the mining operations 
and projects, all Directors also serve as directors of Antofagasta 
Minerals. The annual fee payable to directors of Antofagasta Minerals 
remains $130,000. Therefore, the combined base fees payable to 
Non-Executive Directors amount to $260,000 per annum.

The Board periodically reviews both the structure and levels of 
fees paid to Non-Executive Directors and will continue to review 
these fees from time to time, in accordance with the Directors’ 
Remuneration Policy.

The Board remains satisfied that the current fee structure is aligned 
with the Group’s international peers and did not recommend any 
change in 2017. As part of the review of fees this year it was 
determined that basic fee levels also continued to be in line with 
market, but that fees paid to the Committee Chairmen should be 
increased by $5,000 per annum and that fees paid to Committee 
members should be increased to reflect the considerable additional 
time commitments and responsibilities attached to these roles, which 
have grown in recent years.

ADDITIONAL DIRECTOR FEES PAYABLE IN 20171
Role
Senior Independent Director
Audit and Risk Committee Chairman
Audit and Risk Committee member
Nomination and Governance Committee Chairman
Nomination and Governance Committee member
Projects Committee Chairman
Projects Committee member
Remuneration and Talent Management Committee 
Chairman
Remuneration and Talent Management Committee 
member
Sustainability and Stakeholder Management 
Committee Chairman
Sustainability and Stakeholder Management 
Committee member

Additional fees ($000)
202
20
10
10
4
16
10

16

10

16

10

1.  These fees will be adjusted with effect from 1 April 2018, as described above.

2.  As disclosed in the 2016 Annual Report, this fee was approved by the Board 

on 24 January 2017 and took effect from that date.

The 2017 Directors’ Remuneration Policy does not allow for the payment 
of variable remuneration to the Chairman or Non-Executive Directors.

It is not expected that there will be any change to the Directors’ 
benefits in 2018. However, because the cost of travel to Board 
meetings is reported as an expense benefit, the amounts relating 
to benefits in 2018 will ultimately depend on the number and location 
of Board meetings. 

Antofagasta plc Annual Report 2017 
 
 
 
REMUNERATION REPORTING REGULATIONS 
This Directors’ Remuneration Report has been prepared in accordance with Schedule 8 of the Large and Medium-sized Companies 
and Groups (Accounts and Reports) Regulations 2008 (as amended). It also describes how the Board has applied the principles of good 
governance as set out in the Corporate Governance Code. 

AUDITED SINGLE FIGURE OF DIRECTORS’ REMUNERATION TABLE
The remuneration of the Directors for 2017 is set out below in US dollars. Unless otherwise noted, amounts paid in Chilean pesos have 
been converted at the exchange rate on the first day of the month following the date of payment.

Any additional fees payable for serving on subsidiary and joint venture company boards are also included in the amounts below.

As explained in the Directors’ Remuneration Policy, Directors do not receive pensions or performance-related pay and are not eligible 
to participate in the LTIP.

Chairman
Jean-Paul Luksic
Non-Executive Directors
Ollie Oliveira
Gonzalo Menéndez
Ramón Jara1
Juan Claro
Hugo Dryland (retired effective 31 October 2016)
William Hayes
Tim Baker
Andrónico Luksic C
Vivianne Blanlot 
Jorge Bande 
Francisca Castro (appointed 1 November 2016)
Total Board

Fees

2017 
$000

2016 
$000

1,000

1,000

319
260
863
270
–
318
290
260
296
290
280
4,446

299
260
833
270
217
339
300
260
270
280
43
4,371

Benefits2,3

2017 
$000

11 

129 
25 
21 
11 
58 
49 
46 
3 
8 
9 
6 
376 

2016 
$000

Total

2017 
$000

2016 
$000

10 

1,011 

1,010 

65 
13 
6 
6 
46 
22 
52 
– 
5 
5 
– 
230 

448 
285 
884 
281 
58 
367 
336 
263 
304 
299 
286 
4,822 

364 
273 
839 
276 
263 
361 
352 
260 
275 
285 
43 
4,601 

1.  During 2017, remuneration of $569,000 (2016 – $533,000) for the provision of services by Ramón Jara was paid to Asesorías Ramón F Jara Ltda. The reported increase 
in 2017 is due to currency fluctuation and, to a lesser extent, the annual adjustment for inflation in Chile. This amount is included in the amounts attributable to Ramón Jara 
of $863,000 (2016 – $833,000).

2.  Amounts for Jean-Paul Luksic include the provision of life, accident and health insurance. Amounts for Ramón Jara include the provision of accident insurance. 
3.  Except as described in footnote 2, all “benefits” amounts included in this table arose in connection with the fulfilment of Directors’ duties and, in particular, the cost 
of attending Board meetings. These amounts have been calculated based on what the Company believes would be deemed by HMRC to be taxable benefits if the 
Non-Executive directors were UK tax resident and domiciled, relating to the costs of flights for attending Board meetings in Santiago, Chile and associated hotel and 
subsistence expenses and to the cost of flights for attending Board meetings in London. Given these expenses are incurred by Directors in connection with the fulfilment 
of their duties, the Company also pays the professional fees incurred to complete individual tax returns and the actual tax incurred by Directors on these expenses, the 
latter of which has led to the higher reported figures for the Company’s UK resident Directors. Figures are reported in the year that they are paid, or would be payable, by 
the Company. Figures for 2016 are different from those disclosed in the 2016 Directors’ Remuneration Report because the tax position for expenses in relation to attending 
Board meetings was not confirmed with HMRC until 2017.

107

antofagasta.co.ukGOVERNANCE 
 
 
 
 
 
 
 
 
 
 
 
 
 
REMUNERATION: 2017 DIRECTORS’ REMUNERATION REPORT CONTINUED

DIRECTORS’ INTERESTS (AUDITED)
The Directors who held office at 31 December 2017 had the following 
interests in ordinary shares of the Company:

Jean-Paul Luksic1
Ramón Jara2

Ordinary shares of 5p each

31 December 2017
41,963,110
5,260

1 January 2017
41,963,110
5,260

1.  Jean-Paul Luksic’s interest relates to shares held by Aureberg Establishment, 

an entity that he ultimately controls.

2.  Ramón Jara’s interest relates to shares held by a close family member.

There have been no changes to the Directors’ interests in the 
shares of the Company between 31 December 2017 and the date 
of this report.

The Directors had no interests in the shares of the Company during 
the year other than the interests set out in the table above. No 
Director had any material interest in any contract (other than a 
service contract) with the Company or its subsidiary undertakings 
during the year other than in the ordinary course of business.

SHAREHOLDING GUIDELINES
The Group does not have shareholding guidelines or requirements for 
Directors, all of whom are non-executive.

The Chairman Jean-Paul Luksic and Non-Executive Director 
Andrónico Luksic C are members of the Luksic family; members of 
the Luksic family are interested in the E. Abaroa Foundation which 
controls Metalinvest Establishment and Kupferberg Establishment 
(which, in aggregate, hold approximately 60.66% of the Company’s 
ordinary shares and approximately 94.12% of the Company’s 
preference shares). In addition, Jean-Paul Luksic controls the Severe 
Studere Foundation which, in turn, controls Aureberg Establishment 
(which holds approximately 4.26% of the Company’s ordinary 
shares). This creates significant alignment between these members 
of the Board and shareholders.

During the period, no Non-Executive Director was eligible for any 
short-term or long-term incentive awards and no Non-Executive 
Director owns any shares that have resulted from the achievement 
of performance conditions.

LETTERS OF APPOINTMENT
Each Non-Executive Director has a letter of appointment from the 
Company. The Company has a policy of putting all Directors forward 
for re-election at each AGM, in accordance with the UK Corporate 
Governance Code. Under the terms of the letters, if a majority of 
shareholders do not confirm a Director’s appointment, the 
appointment will terminate with immediate effect. In other 
circumstances, the appointment may be terminated by either party  
on one month’s written notice.

There is a contract between Antofagasta Minerals and Asesorías 
Ramón F Jara Ltda dated 2 November 2004 for the provision  
of advisory services by Ramón Jara. This contract does not have  
an expiry date but may be terminated by either party on one  
month’s notice. 

This arrangement was reviewed and amended during 2017 and  
it was agreed that, from 1 January 2018, the needs and time 
commitment expected from Ramón Jara are greater than had 
previously been provided for under this contract and that additionally, 
the hourly rate payable in respect of these services would be 
increased by 8% to bring the rate into line with the market. This 
exceptional increase is in line with the average real wage increase  
for employees at large mining companies in Chile over the last  
six years. The hourly rate payable and expected time commitments 
under this contract were last reviewed in 2011. 

No other Director is party to a service contract with the Group.

OTHER INFORMATION
As described in this report, Directors are not entitled to payments  
for loss of office and do not receive pension benefits and no such 
payments were made, or benefits received, during 2017. No payments 
were made to past Directors.

By order of the Board

Tim Baker
Chairman of the Remuneration and Talent Management Committee

12 March 2018

108

Antofagasta plc Annual Report 2017 
 
2017 EXECUTIVE 
REMUNERATION REPORT

VOLUNTARY DISCLOSURES 
– EXECUTIVE REMUNERATION 
Iván Arriagada is responsible for leading the senior management  
team and for the executive management of the Group. Members of  
the Executive Committee report to Iván Arriagada and are responsible 
for leading the day-to-day operation of the Group’s mining and 
transport businesses. No member of the Executive Committee,  
including the CEO, sits on the Board of the Company. Consequently,  
the following disclosures have been made voluntarily to demonstrate 
the remuneration arrangements that the Committee believe are 
appropriate for the CEO and the Group’s executives, including the 
variable pay mechanisms (Annual Bonus Plan and LTIP) designed  
to motivate the CEO and the Group as a whole to implement the 
Group’s strategy effectively.

REMUNERATION PRINCIPLES
The remuneration arrangements in place for Iván Arriagada and 
the Executive Committee align remuneration with performance, 
the Group’s strategic objectives and stakeholders’ interests. Iván 
Arriagada and the other Executive Committee members are eligible 
to receive a combination of base salary and other benefits, as well 
as variable remuneration in the form of an annual cash bonus and 
cash-based contingent awards linked to the Company’s share price 
pursuant to the LTIP.

The performance components of variable remuneration are selected 
to incentivise the delivery of the Group’s strategy, to reward Group 
and individual performance and to motivate Iván Arriagada and the 
Executive Committee.

The table on page 111 shows the total remuneration for the Group’s 
lead executive over the last nine years. The total remuneration for 
the CEO in 2017 was 18% lower than in 2016.

EXTERNAL APPOINTMENTS
The Board will consider any proposal for an executive to serve as a 
Non-Executive Director of another company on a case-by-case basis. 
The Board would carefully consider the time commitments of the 
proposed role, the industry of the company, whether or not it is a 
supplier, customer or competitor and whether it would be appropriate 
for the executive to retain remuneration for the position.

SHAREHOLDING GUIDELINES
The Group does not have shareholding guidelines or requirements  
for the CEO and Executive Committee members, all of whom are 
based in Chile.

The CEO, the Executive Committee and certain senior executives 
participate in the LTIP, which entitles them to cash-based contingent 
share awards linked to Antofagasta’s share price. Further details 
of the LTIP are set out on pages 114 and 115.

The Committee considers cash-based awards to be appropriate 
because share-based awards would be taxable on the date of grant 
for Chilean employees. Independent advice was sought by the 
Committee on the viability of granting an interest in shares, rather 
than cash-based awards, during 2017. After reviewing this advice, 
the Committee determined that it remains appropriate to continue 
to use cash-based awards due to the negative tax consequences 
of issuing interests in shares; however, the Committee will continue 
to monitor this position.

SALARY AND BENEFITS
The total remuneration paid to Iván Arriagada in 2017 was $1.8 
million. Fixed remuneration comprises base salary and benefits, and 
in 2017 represented less than 34% of his total remuneration.

Benefits payable to Iván Arriagada reflect amounts paid to maintain 
life and health insurance policies.

According to Chilean law, all employees are required to pay their own 
pension and compulsory health insurance contributions. No additional 
contributions are made by the Group.

Iván Arriagada’s total remuneration package is determined by the 
Committee, taking into account the performance of the Group and his 
personal performance. The Company also benchmarks each element 
of his remuneration and his total remuneration package by reference 
to peers in Chile, the FTSE 100 and FTSE mining indices and 
comparable international mining companies.

EMPLOYMENT CONTRACT
Iván Arriagada is employed under a contract of employment with 
Antofagasta Minerals, a subsidiary of the Company. His contract is 
governed by Chilean labour law. It does not have a fixed term and can 
be terminated by either party on 30 days’ notice in writing. Except in 
the case of termination for breach of contract or misconduct under 
the Chilean Labour Code, Iván Arriagada is entitled to receive one 
month’s base salary for each year of service on termination, 
otherwise no other compensation or benefits are payable on 
termination of his employment. The salary payable to Iván Arriagada 
under his employment contract as of 1 January 2017 was 
Ch$32,170,017 ($49,579) per month and his salary is adjusted for 
inflation in Chile every three months.

Iván Arriagada’s total salary payments for 2017 were Ch$390,416,994 
($603,387). Other than adjustments for inflation, there were no 
adjustments to his salary in 2017. Under his employment contract 
Iván Arriagada is entitled to 20 working days’ paid holiday per year.

Because Iván Arriagada’s salary is paid in Chilean pesos, it is subject 
to annual exchange rate movements when reported in US dollars.

2018 CEO REMUNERATION ADJUSTMENT
As noted in the 2016 Annual Report, the Committee closely monitors 
Iván Arriagada’s performance and pay arrangements. The Committee 
did not adjust Iván Arriagada’s remuneration package in 2017, but has 
subsequently decided to increase Iván Arriagada’s base salary by 10% 
and to increase his target and maximum annual bonus opportunity to 
67% (from 50%) and 133% (from 100%) of base salary respectively. 
These changes will take effect from 1 April 2018.

The explanation for this increase is set out in the Committee 
Chairman’s introduction on page 103.

REMUNERATION STRUCTURE
The Committee is satisfied that the remuneration arrangements for Iván 
Arriagada and the Executive Committee are linked to performance, 
appropriately stretching and aligned to the Group’s strategy.

Variable remuneration is a core component of Executive Committee 
remuneration and in 2018 up to 60% of the Executive Committee’s 
total annual remuneration (excluding that of the CEO) may be received 
under the Annual Bonus Plan and the LTIP.

109

antofagasta.co.ukGOVERNANCE2017 EXECUTIVE REMUNERATION REPORT CONTINUED

2017 TOTAL REMUNERATION

SINGLE FIGURE OF CEO REMUNERATION TABLE: 

CEO (not on the Board)
Iván Arriagada1 (appointed CEO 8 April 2016)
Total

Salary

Benefits2

Annual Bonus3

LTIP4

Total

2017 
$000

2016 
$000

2017 
$000

2016 
$000

2017 
$000

2016 
$000

2017 
$000

2016 
$000

2017 
$000

603
603

417
643

7
7

6
8

526
526

258
375

662
662

–
– 

1,799
1,799

2016 
$000

681 
681 

1.  The amounts disclosed for Iván Arriagada in 2016 relate to remuneration paid from 8 April 2016, including the pro-rata value of his base salary, benefits and annual bonus. 

No pension is payable to Iván Arriagada. 

2.  The benefits expense represents the provision of life and health insurance and does not include taxable benefits relating to expenses.
3.  The annual bonus paid to Iván Arriagada in 2016 is reported based on the exchange rate as at 1 April 2016. In the 2016 Remuneration Report a slightly higher figure of 

$260,000 was reported, which reflected the anticipated exchange rate at the date the 2016 Remuneration Report was published. Iván Arriagada’s 2017 annual bonus will 
be paid following the date of publication of this report and the exchange rate used to calculate this figure is as at 1 March 2018 and as calculated as shown on page 112. 
4.  As explained on pages 114 and 115, awards granted pursuant to the LTIP are split between Restricted Awards and Performance Awards. Amounts relating to Restricted 

Awards are reported in the year they vest. Performance Awards are reported in the year the performance period ends. The 2016 amounts payable to Iván Arriagada under 
the LTIP have been restated on the basis that no awards vested following his appointment in 2016. The 2017 amounts payable to Iván Arriagada under the LTIP relate to 
Restricted Awards and Performance Awards granted in 2015 and to Restricted Awards granted in 2016 (prior to his appointment as CEO). The performance period for 
Performance Awards granted in 2015 concluded on 31 December 2017 and those awards will vest on or after 25 March 2018. Because the Performance Awards granted 
in 2015 have not yet vested, the amounts attributable to these awards have been estimated applying the performance scores set out on page 115 and using the closing 
share price on 31 December 2017 of 1005p and the exchange rate as at 31 December 2017 of $1.35/£1.00. As noted on pages 114 and 115, LTIP participants receive 
conditional rights to receive a cash payment by reference to a specified number of the Company’s shares (“phantom share awards”). Participants are not compensated for 
dividends paid by the Company between the date of grant and vesting.

COMPARISON OF OVERALL PERFORMANCE AND REMUNERATION
The following graph shows the Company’s performance compared with the performance of the FTSE All-Share Index and the Euromoney 
Global Mining Index over a nine-year period, measured by total shareholder return (as defined below). The FTSE All-Share Index has been 
selected as an appropriate broad equity market index benchmark as it is the most broadly-based index to which the Company belongs and 
relates to the London Stock Exchange, where the Company’s ordinary shares are traded. The Euromoney Global Mining Index is also shown 
because this index has been determined to be the most appropriate specific comparator group for the Company and total shareholder return 
performance in comparison with the Euromoney Global Mining Index is one of the performance criteria in the Group’s LTIP as set out on  
pages 114 to 115. 

500

400

300

200

100

0

31/12/08

31/12/09

31/12/10

30/12/11

31/12/12

31/12/13

31/12/14

31/12/15

30/12/16

29/12/17

ANTOFAGASTA

FTSE ALL SHARE

EUROMONEY GLOBAL MINING

Total shareholder return represents share price growth plus dividends reinvested over the period.  
Total Return base index – 31 December 2008 = 100.

Total shareholder return is calculated to show a theoretical change in the value of a shareholding over a period, assuming that dividends  
are reinvested to purchase additional shares at the closing price applicable on the ex-dividend date. Total shareholder return for the FTSE 
All-Share Index and the Euromoney Global Mining Index are calculated by aggregating the returns of all individual constituents of those indices  
at the end of a nine-year period.

110

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
LEAD EXECUTIVE REMUNERATION FOR THE LAST NINE YEARS
The total remuneration of the lead executive in the Group for the past nine years, in US dollars, is as follows: 

Single figure of remuneration for  
the Group’s lead executive $000
Chairman – Jean-Paul Luksic
CEO – Diego Hernández
CEO – Iván Arriagada
Total
Percentage change on previous year
Proportion of maximum annual bonus 
paid to the CEO
Proportion of maximum LTIP awards 
vesting in favour of the CEO4

2009
3,184
–
–
3,184

2010
3,330
–
–
3,330

2011
3,521
–
–
3,521

2012
3,598
–
–
3,598

2013
3,615
–
–
3,615

20141,2
2,196
688
–
2,884

2015
–
2,445
–
2,445

20163
–
1,525
681 
2,206

–
–

–
–

–
–

–
–

–
–

69%
76%

39%
16%

61%
– 

2017
–
–
1,799
1,799
(18)%

79%
85%

1.  The single figure of remuneration for the Group’s lead executive in 2014 comprises Jean-Paul Luksic’s remuneration until 1 September 2014 (when he became 

Non-Executive Chairman) and Diego Hernández’s remuneration from 1 September 2014 (when he became CEO).

2.  The Chairman was not eligible for variable remuneration and the 2014 percentage figures therefore only relate to the 2014 annual bonus and LTIP awards vesting for 

the CEO.

3.  The single figure of remuneration for the Group’s lead executive in 2016 comprises Diego Hernández’s remuneration until 8 April 2016 (when he stepped down as CEO) 

and Iván Arriagada’s remuneration from 8 April 2016 (when he became CEO), as disclosed in more detail in the 2016 Annual Report.

4.  No Performance Awards vested for the CEO in 2016. As Restricted Awards do not have a performance element, they are not included in these calculations.

RELATIVE CHANGE IN REMUNERATION
The total remuneration paid to Iván Arriagada in 2017 was 18% lower 
than the combined remuneration paid to Iván Arriagada and Diego 
Hernández during their terms as CEO in 2016. This included a 6% 
decrease in base salary and a 2% increase in benefits.

The equivalent average percentage increase in total remuneration for 
Group employees as a whole in 2017 was 4.8%. This comprised a 
2.9% increase in salaries, a 2.3% increase in benefits and a 13.7% 
increase in annual bonus. It is common for employment contracts in 
Chile to include an annual adjustment for Chilean inflation and most 
Group employees’ base salaries in Chile are linked to inflation.

The table below compares the changes from 2016 to 2017 in base 
salary, benefits and annual bonus paid to the CEO and Group 
employees as a whole. The underlying elements of the CEO’s pay 
are calculated using the values reported in the single figure of 
remuneration table on page 110.

RELATIVE IMPORTANCE OF REMUNERATION SPEND
The table below shows the total expenditure on employee 
remuneration, the levels of distributions to shareholders and the 
taxation cost in 2016 and 2017.

Employee remuneration1 
Distributions to shareholders2
Taxation3

2016  
($m)
379.2
181.4
261.2

2017 
($m)
417.8 
501.8 
509.8 

Percentage  
change
10.2% 
176.6%
95.2%

1.  Employee remuneration cost includes salaries and social security costs, as set out 

in Note 8 to the financial statements.

2.  Distributions to shareholders represent the dividends proposed in relation to the 

year as set out in Note 13 to the financial statements.

3.  Taxation has been included because it provides an indication of the tax 

contribution of the Group’s operations in Chile to the Chilean state. The taxation 
cost represents the current tax charge in respect of corporate tax, mining tax 
(royalty) and withholding tax, as set out in Note 10 to the financial statements.

CEO1
Employees

Percentage  
change in  
base salary
(6)%
2.9%

Percentage  
change in  
benefits
2%
2.3%

Percentage  
change in  
annual bonus
40%
13.7%2

1.  The figures for the CEO relate to the percentage changes for the amount paid to 
Iván Arriagada in 2017 and the aggregate amount paid to Diego Hernández and 
Iván Arriagada during their terms as CEO in 2016.

2.  This figure relates to the percentage change in the average annual bonus for 
mining division employees and does not include a one-off bonus paid to 
employees as a result of the conclusion of collective bargaining agreements with 
labour unions at Zaldívar and Centinela in 2017. Mining division employees were 
chosen as the comparator group because the mining division accounts for more 
than 90% of the Group’s revenue and the Annual Bonus Plan that applies to 
the Executive Committee is the same plan that applies to the mining division 
as a whole. 

111

antofagasta.co.ukGOVERNANCE 
 
 
 
 
 
 
 
 
 
2017 EXECUTIVE REMUNERATION REPORT CONTINUED

2017 ANNUAL BONUS PLAN

ANNUAL BONUS PLAN
Employees are eligible to receive cash bonuses under the Annual 
Bonus Plan based on Group and individual performance. The Annual 
Bonus Plan focuses on the delivery of annual financial and non-
financial targets designed to align remuneration with the Group’s 
strategy and create a platform for sustainable future performance. 
Individual award levels are calibrated at the conclusion of each annual 
performance period to ensure that performance targets remain 
stretching and that high or maximum payments under the plan are 
received only for exceptional performance.

For 2017, the bonus payable to the CEO and members of the 
Executive Committee was 70% attributable to the performance of the 
Group and 30% to personal performance, according to metrics that 
were fixed at the beginning of the year. 

The bonus payable to the CEO for achieving both Group and personal 
performance targets in 2017 was 50% of annual base salary. 
The maximum bonus receivable by the CEO for achieving stretch 
performance targets in 2017 was 100% of annual base salary 
(67% for the Executive Committee members (excluding the CEO)).

For 2017, the bonus for the CEO was 79% of base salary and the 
average bonus for the Executive Committee members (excluding the 
CEO) was approximately 47% of base salary.

The Group performance criteria for the Annual Bonus Plan and the 
individual performance criteria for the CEO are set annually by the 

Committee. The individual performance criteria for the Executive 
Committee are set by the CEO and reviewed by the Committee.

Annual Bonus Plan metrics are provided on a voluntary basis, 
including the outcomes against each of the performance metrics 
relating to business development, sustainability and organisational 
capabilities. This is to provide shareholders with further clarity on the 
structure of the metrics and reassurance that the metrics are based 
on stretching performance criteria.

A critical issue for a mining company is the commodity price and the 
impact of changes in this price on our long-term and annual 
performance targets are carefully reviewed to ensure there is fair 
opportunity for achievement under each metric.

IVÁN ARRIAGADA – INDIVIDUAL PERFORMANCE UNDER THE 
2017 ANNUAL BONUS PLAN 
The Committee, with input from the Board, assessed Iván Arriagada’s 
performance against his individual objectives as 110 (within a range of 
90 (Threshold) to 110 (Maximum)) for his individual contribution to the 
business during the year. This performance score reflects exceptional 
performance during the year in which all of his individual objectives 
were met or exceeded and counts towards 30% of his annual bonus. 
Iván Arriagada’s performance against his individual objectives is 
summarised below:

Category 
Leadership

Performance
 − Strong safety leadership demonstrated through regular mine inspections, integration of new safety leadership 

and initiation of further training and development at the operating companies 

 − Effective working relationship with the Board

 − Effective leadership of the cultural reinforcement and diversity and inclusion programmes 

Results

 − Alignment with strategy demonstrated through focus on the Group’s core business
 − Zero fatalities

 − Met production target

 − Achieved significant cost reductions

 − Exceeded financial results target

Succession planning and 
talent development

 − Excellent progress on environmental performance
 − Successful implementation of succession plans for key management positions

 − Successful initiation of the Group’s new operating model with good initial results

 − Strong emphasis on succession planning, talent management and ensuring synergies across the Group’s 

operating companies

Project development

 − Encuentro Oxides and Centinela Molybdenum Plant projects on budget and key milestones of first production 

and commissioning respectively, delivered through the successful management of in-house teams

 − Flexible and considered leadership of the Los Pelambres Incremental Expansion and Centinela Second 

Concentrator projects to maximise flexibility and ability to take advantage of opportunities

Based on performance achieved against targets during the 2017 financial year, the Committee determined that Iván Arriagada would receive 
a bonus payment of $525,930 for 2017. This figure was determined as follows:

Overall Performance Score
Overall Performance Score as a percentage to be applied to the Maximum
Gross Annual Bonus 

(70% x 104) + (30% x 110) = 105.8
(105.8 – 90) ÷ 20 = 79%
79% of Ch$395,186,184 (Maximum)
= Ch$312,197,085

Calculated in US dollars using the exchange rate as at 1 March 2018 of $1 = Ch$593.

Because the annual bonus is calculated and paid in Chilean pesos, it is subject to annual exchange rate movements when reported in US dollars.

112

Antofagasta plc Annual Report 2017GROUP PERFORMANCE UNDER THE 2017 ANNUAL BONUS PLAN
Group performance under the 2017 Annual Bonus Plan is shown in the table below. The choice of these criteria, and their respective 
weightings, reflects the Committee’s belief that any incentive compensation should be tied both to the overall performance of the Group and to 
those areas of the business that the relevant individual can directly influence.

Weighting  Objective
60%

Core Business

Measure

2017 Threshold 
(90)

2017 Target 
(100)

2017 Maximum 
(110)

2017 Outcome

2017 Performance 
score1
102

EBITDA2
Copper production3
Costs4
Cash costs before by-product credits (17%)
Corporate expenditure (3%)
Sustaining capital expenditure5

Business Development
Growth projects – construction execution6
Growth projects – study progress7
Exploration programme8

10%
25%
20%

5%

15%
5% 
5%
5%

25%
5%
5%

Sustainability and Organisational Capabilities
Safety – KPIs, reporting and safety model9
People – Supervisors benefits update and diversity 
and inclusion policy Board approval10
Environmental performance11
Social performance12

10%
5%
Total – pre adjustments

Adjustment for meeting zero fatality target13

Total – post adjustments 

1.  Performance score range is 90-110 where 90 = threshold (0% bonus), 100 = 

target (50% bonus), and 110 = stretch (100% bonus).

2.  Mining division only. Net of copper price and exchange rate fluctuations. 
3.  100% basis, except for Zaldívar (50%).
4.  The threshold, target and maximum target figures for cash costs were adjusted for 
exchange rate fluctuations and the figures for corporate expenditure were adjusted 
for the net impact of one-off bonuses paid as part of labour negotiations at the Group’s 
operating companies which were not included in the Group’s budget and were 
not included in the figures disclosed in the 2016 Annual Report due to their 
commercial sensitivity. 

5.  Measured against the implementation of planned works at each of the Group’s mining 
operations to sustain the mining operations during the year and progress against the 
budget for the year associated with those works where Threshold is 85% completion 
of planned works on budget, Target is between 90% and 100% of progress on budget 
and Maximum is more than 105% of planned works within the budget. The weighted 
outcome for the Group’s mining operations was 103. 

6.  Split between the Encuentro Oxides (2.5%) and Centinela Molybdenum Plant (2.5%). 
Specific targets based on budgets for costs incurred, production contribution to 
Centinela and project completion date, with opportunity to achieve the Maximum if total 
capex was not more than the approved budget and planned production was met. For 
both projects capex matched budget but project completion date and production targets 
were only partially met. Outcome was 96, comprising 97 for Encuentro Oxides and 95 
for the Centinela Molybdenum Plant.

7.  Split between the Centinela Second Concentrator (2.5%) and Los Pelambres 

Incremental Expansion (2.5%). Specific targets based on budgets for capex and study 
completion dates, with opportunity to achieve the Maximum if completion of the study 
was met on time with a 2.5% reduction in capex and profitability greater than the 
pre-feasibility study in respect of the Centinela Second Concentrator and if the 
investment proposal is presented for Board approval by the end of 2017, along with the 
accomplishment of 110% progress against the critical permits plan for the Los 
Pelambres Incremental Expansion. The Centinela Second Concentrator project was 
re-planned following discussions and deliberations by the Projects Committee to 
consider an alternative project. The feasibility study for the Los Pelambres Incremental 
Expansion has advanced and was granted its key environmental permit in February 
2018. Outcome was 98 comprising 100 for the Centinela Second Concentrator project 
and 95 for the Los Pelambres Incremental Expansion project.

$m
kt

$/lb
$m

2,138
663

1.71
76

2,376
705

1.61
72

2,613
726

1.57
69

2,494
704

1.60
75

Measured according to schedule and budget as described 
in more detail in the footnotes

Measured according to schedule and budget as described 
in more detail in the footnotes

Measured according to KPIs and milestones as described 
in more detail in the footnotes

Measured according to KPIs and milestones as described  
in more detail in the footnotes

105
100 

103
92
103 

101
96
98
110

104
108
105

102
105
102.2
+1.83
104.0

8.  Maximum and Target were defined according to the progress of execution of planned 
exploration programmes including drilling targets measured in kilometres and the 
discovery of prospects with sufficient potential mineralisation. The Maximum (110) was 
achieved against the plan approved at the beginning of 2017. 

9.  Split between safety and health risk management at the Group’s operations (3%) 

through the implementation of critical controls for each type of risk, as verified by the 
executive team with responsibility for Sustainability and Corporate Affairs, and 
performance against global lost-time accidents frequency index (1%) and performance 
in reporting near-miss accidents with high potential (1%). Outcomes were 110 for safety 
and health risk management and reporting of near-miss accidents with high potential 
and 101 for performance against the global lost-time accident frequency rate index.
10. Split between the implementation of an action plan to modernise benefits available to 
supervisors (2.5%) with a Target of achieving the planned key dates and milestones 
and the diversity and inclusion strategy proposal approved by Board (2.5%) with a 
Target of 30 September. For both the maximum was achievable if the quality exceeded 
both the CEO’s and the Remuneration and Talent Management Committee’s 
expectations. The outcome was 105 for both goals.

11. Split between obtaining the Environmental Approval Resolution (EAR) for the Los 
Pelambres Incremental Expansion project (5%) with Target for obtaining it by 31 
December and Maximum if it was obtained before 30 September; and to agree with the 
corresponding environmental authority a compliance plan in respect of commitments 
under environmental permits (5%) with Target if agreement was reached by 31 
December and Maximum achievable if a set of predefined activities related to 
environmental compliance were accomplished. The outcome for Los Pelambres 
Incremental Expansion project was 98 and for the Compliance Plan was 105.

12. The control of risks relating to social incidents performance within the budget across all 

companies where maximum was achievable with no social incidents impacting 
production and without costs incurred outside the scope of the budget. There were no 
social incidents that impacted on production. The outcome was 105 because Antucoya 
had a minor issue that required some expenditure outside the scope of the budget.
13. As noted in the Company’s 2015 Remuneration Report, a standalone adjustment trigger 

amounting to 15% of the performance score applies to the Annual Bonus Plan – 
upwards if there are no fatalities during the year and downwards if there are one or 
more fatalities during the year. This resulted in an automatic increase of 1.83 to the final 
Group performance score for 2017 (ie 15% of 102.2 – 90).

113

antofagasta.co.ukGOVERNANCE 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017 EXECUTIVE REMUNERATION REPORT CONTINUED

LONG TERM INCENTIVE PLAN

LONG TERM INCENTIVE PLAN (LTIP)
The Company introduced the LTIP in 2011. Eligibility to participate in 
the LTIP is determined by the Committee each year on an individual 
basis and all members of the Executive Committee currently 
participate. Awards are normally granted annually and Directors are 
not eligible to participate.

Under the LTIP, participants are eligible to receive conditional rights to 
receive a cash payment by reference to a specified number of the 
Company’s ordinary shares (“phantom share awards”), which are 
paid in cash upon vesting based on the price of the Company’s 
ordinary shares at the time of vesting. Participants are not 
compensated for dividends paid by the Company between the date of 
grant and the vesting of awards.

LTIP awards are split between Restricted Awards and Performance 
Awards. Restricted Awards vest only if the relevant employee 
remains employed by the Group on the vesting date. Performance 
Awards vest subject to both the satisfaction of performance 
conditions and the relevant employee remaining employed by the 
Group on the vesting date. The same performance criteria apply to all 
participants in the LTIP and are designed to link business objectives, 
shareholder value and senior management rewards.

 − Performance Awards reward performance over three years. There 

is no additional holding period before these amounts are paid.

 − Restricted Awards vest one-third in each year over a three-year 

period following the grant of the award.

The Committee carefully considered the design of the LTIP, including 
the vesting and holding periods for Restricted Awards and 
Performance Awards and the mix of awards that are granted to 
participants in the LTIP, and confirmed that the current design 
continues to be appropriate, taking into account the overall quantum 
of remuneration available to the CEO and the Executive Committee 
and remuneration structures typically used in the market in Chile. 

The number of Performance Awards and Restricted Awards awarded 
to each member of the Executive Committee is calculated as a 
percentage of salary up to a limit of 200% of base salary or 325% 
of base salary if the Committee determines that exceptional 
circumstances apply. The market value of shares in relation to which 
the award is to be granted is equal to the closing price on the dealing 
day before the grant, or, if the Committee determines, the average 
closing price during a period set by the Committee not exceeding five 
dealing days ending with the last dealing day before the grant.

Iván Arriagada participates in the LTIP and is expected to receive total 
payments of $661,808 in respect of the Restricted Awards granted in 
2015 and 2016, that vested and were paid in 2017 and Performance 
Awards granted in 2015 which include performance elements that 
concluded on 31 December 2017 but that will not vest until on or after 
25 March 2018 as shown below and the details of which are set out 
in more detail on page 115. These anticipated total payments amount 
to 110% of his base salary.

LTIP awards granted after 17 March 2015 are subject to malus 
provisions under the LTIP rules. These allow the Committee to, at its 
discretion, reduce the number of shares to which an award relates 
or to cancel an award as a result of: 

 − actions by a participant that, in the reasonable opinion of the 

Committee, amount to gross misconduct which has or may have 
a material effect on the value or reputation of the Company or any 
of its subsidiaries

 − a materially adverse error in the consolidated financial statements 

of the Group during the performance period

 − any reasonable circumstance that the Committee determines in 
good faith to have resulted in an unfair benefit to the participant.

Clawback has not been introduced due to uncertainty around its legal 
validity in Chile.

IVÁN ARRIAGADA’S “IN FLIGHT” LTIP AWARDS
The following LTIP awards with one or more outstanding tranches have been granted to Iván Arriagada. The number of shares over which each 
grant relates is determined based on the limits set out in the LTIP rules, considerations around retention and the share price at the time of grant.

Year of 
grant1
2015

2016

2017

Award  
type
Performance 
Awards
Restricted 
Awards

Performance 
Awards
Restricted 
Awards

Performance 
Awards
Restricted 
Awards

Number of 
shares to 
which the  
grant relates

Vesting 
dates
35,645 25 March 2015 25 March 2018

Date of 
grant

35,645 25 March 2015 25 March 2016 
25 March 2017 
25 March 2018 
85,559 22 March 2016 22 March 2019

36,668 22 March 2016 22 March 2017 
22 March 2018 
22 March 2019
76,070 30 March 2017 30 March 2020

32,602 30 March 2017 30 March 2018
30 March 2019
30 March 2020

Face value  
of award 
(using market  
price at date of 
grant) $’000
375

375

630

270

770

330

Market  
price at  
the date  
of grant
$2

End of  
performance  
period
10.77 31 December 
2017
N/A

10.77

% of award 
receivable  
if Threshold 
performance 
achieved
0%

% of award 
receivable  
if Target 
performance 
achieved
50%

% of award 
receivable  
if Maximum 
performance 
achieved
100%

0%

100%

100%

7.14 31 December 
2018
N/A

7.14

8.14 31 December 
2019
N/A

8.14

0%

0%

0%

0%

50%

100%

100%

100%

50%

100%

100%

100%

1.  2015 and 2016 awards were granted before Iván Arriagada was appointed CEO.
2.  The market price used at the date of grant was the closing share price on the dealing day before the grant date, converted into US dollars using the exchange rate on the 

date of grant.

114

Antofagasta plc Annual Report 2017 
 
 
ANTICIPATED GROUP PERFORMANCE UNDER THE 2015 LTIP
As noted in the single figure table on page 110, performance against the Performance Awards granted in 2015 will not be finally determined 
by the Committee until after the date of this report, once the Group’s 2017 results have been released to the market. The performance criteria 
attaching to these Performance Awards and the anticipated performance against these criteria, based on estimates as at the date of this report, 
are as follows:

Weighting 
33%

Objective
Relative total 
shareholder  
return2 

30%

EBITDA3

5%

Mineral resources 
increase

Threshold (0%)
0% vesting at 
performance below 
the index during the 
three-year period

0% vesting at  
$3,496 million or 
below
0% vesting at  
77.8 million tonnes  
of contained copper  
or below as at  
31 December 2017

Measure

Target (see below)
33% vesting at 
performance  
equal to the  
index during the 
three-year period
75% vesting at 
$3,933 million

Maximum (100%)
100% vesting at 
performance equal  
to or greater than the 
index plus 5% during 
the three-year period
100% vesting at  
$4,370 million

Anticipated  
performance 
To be updated at the  
vesting date 

Anticipated
achievement1
100%

EBITDA for the period  
was $4,416 million

100%

100%

50% vesting at 
79.8 million tonnes 
of contained 
copper

100% vesting at  
81.9 million tonnes  
of contained copper

Resources increased 
to 85.1 million tonnes 
of contained copper

Projects, development 
and sustainability
1. Encuentro Oxides 
and Centinela Second 
Concentrator (four 
project-specific goals) 
(12%)
2. Environmental  
and communities (five 
specific goals) (7%)
3. Los Pelambres 
Incremental 
Expansion project 
(13%)

32%

Total

At least two of  
the four goals 
achieved

At least three of 
the four goals 
achieved

All four goals achieved None of the goals achieved

0%

At least two of the  
five goals achieved

At least four of the 
five goals achieved

All five goals achieved Four of the five  

goals met

Environmental 
Impact Assessment 
(EIA) strategy and 
communications plan 
approved by Board 
in March 2015

Feasibility study 
completed and EIA 
submitted by  
31 June 2016

EIA approved and 
project approved for 
execution by 31 
December 2017

Due to market conditions in 
2015 and 2016, the Board 
made certain decisions that 
resulted in a slow-down of  
the execution timetable for  
the Group’s projects portfolio.  
As a result, the Committee is 
likely to agree to adjust the 
performance criteria that 
apply to Performance Awards 
granted in 2015 relating to the 
Los Pelambres Incremental 
Expansion project. The 
maximum performance goal 
was ultimately achieved within 
three months of the original 
target date set in 2015. 

75%

90%

85%

1.  Anticipated achievement is based on estimates made as at the date of this report. These awards will not vest until after the Group’s 2017 results have been released to 

the market.

2.  Total shareholder return is calculated to show a theoretical change in the value of a shareholding over a specified period, assuming that dividends are reinvested to 
purchase additional shares at the closing price applicable on the ex-dividend date. Total shareholder return for the Euromoney Global Mining Index is calculated by 
aggregating the returns of all individual constituents of that index and, for the purposes of comparison with the Company’s share performance, taking an average of the 
index over the three months before the beginning and the end of the period respectively.

3.  Targets are calculated based on the Group’s accumulated EBITDA over the period from 2015-17, versus the 2015 budget figure and the Group’s 2015 internal base case 

figures for 2016 and 2017. The final calculations have been adjusted for commodity price and exchange rate fluctuations.

115

antofagasta.co.ukGOVERNANCE 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017 EXECUTIVE REMUNERATION REPORT CONTINUED

ILLUSTRATION OF CEO REMUNERATION 
POLICY IN 2018

ILLUSTRATION OF CEO REMUNERATION POLICY IN 2018
A significant proportion of the remuneration available to Iván 
Arriagada is dependent on the performance of the Group and in 2018 
his total remuneration will consist of the same elements as in 2017:

 − Fixed elements comprising an annual base salary of 

Ch$395,186,184 ($598,767) as at 1 January 2018, subject to 
adjustments for Chilean inflation, and the 10% merit-based increase 
explained on page 109, which takes effect from 1 April 2018, plus 
benefits. 

 − Annual variable elements comprising an annual bonus equivalent to 
67% of base salary as at 31 December 2018 if Target performance 
is achieved, with a Maximum of 133% of base salary if stretch 
targets are met.

 − Long-term variable elements comprising the grant of LTIP awards 
(30% Restricted Awards and 70% Performance Awards), up to a 
limit of 200% of base salary or 325% if the Committee determines 
that exceptional circumstances apply.

The chart opposite outlines the CEO’s total potential remuneration 
in 2018 under different performance scenarios.

The figures are based on the following assumptions:

 − Minimum consists of base salary plus benefits only and excludes 

adjustments for inflation.

 − Target consists of base salary, benefits and 50% of the maximum 
potential Annual Bonus award and the vesting of LTIP awards at 
100% of the maximum potential award for Restricted Awards and 
50% of the maximum potential award for Performance Awards

 − Maximum consists of base salary, benefits, 100% of the maximum 
potential Annual Bonus award and the vesting of LTIP awards at 
100% of the maximum potential award for Restricted Awards and 
for Performance Awards.

 − Long-term variable elements are calculated on the basis of the 

usual 200% maximum limit.

 − All elements and annual variable elements are estimated in Chilean 
pesos using an exchange rate of $1 = Ch$660 and are therefore 
subject to exchange rate fluctuations during the year.

52%

$2.8m

46%

31%

44%
$1.9m

44%

22.5%

$0.7m

100%

33.5%

23%

Minimum

Target

Maximum

FIXED ELEMENTS

ANNUAL VARIABLE ELEMENTS

LONG-TERM VARIABLE ELEMENTS

2018 ANNUAL BONUS PLAN
The Board has agreed Group performance criteria for the 2018 Annual Bonus Plan as follows. 70% of the CEO and Executive Committee’s 
2018 annual bonus will be calculated based on the Group’s performance against these criteria in 2018. 

Weighting 
60%
15%

Objective
Core Business
EBITDA

Measure

Threshold

Target

Maximum

$m

≤-10% The Group’s future metals price assumptions are 

≥+10%

commercially sensitive and therefore the target 
for EBITDA will not be disclosed in advance. 
However, the Company will disclose the 2018 
target and outcome in the 2018 Annual Report.

tonnes

693,000

705-740,000 

759,000

$/lb

$m

1.76

83.0

1.65

79.0

1.61

75.1

Measured according to KPIs and milestones. The Company will disclose the 
2018 targets and outcomes in the 2018 Annual Report.

Measured according to KPIs and milestones. The Company will disclose the 
2018 targets and outcomes in the 2018 Annual Report.

25%
20%

20%

15%
5%
20%

5%
5%
5%
5%

116

Copper production
Costs
Cash costs before by-product 
credits (17%)
Corporate expenditure (3%)
Business Development – 
Growth Projects Execution
Projects 
Exploration
Sustainability and 
Organisational Capabilities
Safety
People
Environmental
Social

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PERFORMANCE SCORE ADJUSTMENTS AND BOARD 
DISCRETION
As was the case in 2016 and 2017, the final performance score under 
the 2018 Annual Bonus Plan will be subject to a 15% adjustment 
upwards if there are no fatalities, and 15% downwards if there are 
one or more fatalities, during 2018. 

The final performance score for Core Business will also automatically 
be adjusted to 90 (0% bonus) when applied to the 2018 annual bonus 
for the Executive Committee if the Group does not record a profit 
after tax (excluding extraordinary non-cash items and changes to 
legislation or accounting rules and calculated using the statutory 
nominal tax rate) in 2018. 

The Committee maintains discretion to adjust the final performance 
score within a range of 3% however use of this adjustment must be 
approved by the Board. 

IMPACT OF THE 2017 STRUCTURAL REVIEW ON THE 2018 
ANNUAL BONUS PLAN
The weighting attributable to Business Development – Growth 
Projects Execution has been increased by 5% in 2018. This reflects 
the importance of the Group’s current projects portfolio. However,  
as noted on page 103, as part of the fundamental review of the 
Group’s executive remuneration structures in 2017, the number of 
KPIs in the 2018 Annual Bonus Plan has been reduced from 15 to ten.  
The weighting for EBITDA has increased from 10% to 15% as a 
consequence of its removal from the LTIP performance criteria.  
The target of sustaining capital expenditure has been removed from 
the Group-level Annual Bonus Plan but retained for the Annual Bonus 
Plan at the individual mining operations to reflect the concentration  
of efforts to meet these targets at the operating company level. 

The number of objectives for Business Development, and 
Sustainability and Organisational Capabilities has been reduced  
to a single priority objective in respect of Projects, Exploration 
(regarding Business Development) and Safety, People, Environmental 
and Social (regarding Sustainability and Organisational Capabilities). 
By concentrating on these objectives it is expected that management 
will be in a better position to focus on the objectives that most closely 
align with the Group’s strategy.

2018 LTIP AWARDS
Awards will not be granted under the LTIP in 2018 until after the date 
of this report and following publication of the Group’s 2017 results. 

As noted on page 103, it is not currently expected that there will be 
any change to the design of the LTIP in 2018 and a mix of Restricted 
Awards and Performance Awards are expected to be granted to the 
CEO and Executive Committee members in accordance with the 30% 
Restricted Award, 70% Performance Award split following practice 
in recent years and subject to the limits set out in the LTIP rules. 
The performance conditions attaching to Performance Awards are 
anticipated to be those set out opposite. If the performance conditions 
set by the Committee end up being materially different from those 
disclosed, the revised performance conditions will be disclosed in the 
2018 Annual Report.

Weighting  Objective
50%

Relative Total 
Shareholder 
Return

25%

Mineral 
Resources 
Increase

12.5% Projects 

Performance

Measure
Comparison against Euromoney Global 
Mining Index with 33% vesting at 
performance equal to the index and 100% 
vesting at performance equal to or greater 
than the index plus 5% during the 
three-year period.
Tonnes of contained copper at the end 
of 2020. Maximum is expected to be 85.7 
million tonnes of contained copper, with 
an anticipated Target and Threshold of 
84.7 and 82.7 million tonnes of contained 
copper respectively.
Relates to the Group’s priority projects. 

12.5% Environmental 

Performance

Relates to the Group’s environmental 
performance. 

IMPACT OF THE 2017 STRUCTURAL REVIEW ON LTIP
The LTIP review was supported by Willis Towers Watson and included 
reviewing the plan’s objectives, methodology, participants, 
performance KPIs and targets. As part of this process, the plan was 
benchmarked against peers both globally and in the UK. Participants 
were asked to give feedback on the plan, including whether or not the 
performance KPIs adequately reflected current business challenges.  
As noted on page 103, the number of KPIs for the 2018 LTIP has been 
reduced from seven to four. The EBITDA target has been removed, 
with a corresponding increase in weighting in the Annual Bonus Plan 
and there will be a single goal for Projects and Environmental 
Performance. The weighting for relative Total Shareholder Return,  
as the primary KPI in the 2018 LTIP associated with financial results 
(following the removal of EBITDA and its increased weighting in the 
Annual Bonus Plan) has been increased to 50% of total performance, 
Mineral Resources Increase has been increased to 25% and the total 
for Projects Performance and Environmental Performance has 
marginally decreased from 30% to 25% (12.5% each).

In addition to the above mechanical changes to the LTIP, which will 
apply from 2018, the Committee also reviewed and simplified the 
eligibility criteria and calibration process that applies to plan 
participants across the Group, as well as the system for determining 
grant levels based on individual performance and importance of the 
role. As part of the feedback process, it was confirmed that a lack of 
clarity about the Group’s collective performance against three-year 
performance metrics during the performance period reduced the 
value that employees ascribed to the LTIP and the Committee has 
therefore sanctioned additional and more detailed communications to 
employees in connection with the LTIP. 

Tim Baker
Chairman of the Remuneration and Talent Management Committee

12 March 2018

117

antofagasta.co.ukGOVERNANCESUMMARY OF 2017 DIRECTORS’ REMUNERATION POLICY

DIRECTORS’ 
REMUNERATION POLICY

The 2017 Directors’ Remuneration Policy was approved by 
shareholders at the AGM held on 24 May 2017 and took effect 
from that date. The following information on pages 118 to 120 is 
provided for reference and covers elements of the policy that apply 
to all Directors. It does not form part of the 2017 Directors’ 
Remuneration Report.

The full policy can be found in the Remuneration and Talent 
Management section of the Company’s website at www.antofagasta.
co.uk/investors/corporate-governance/board-committees/

POLICY SCOPE
The policy applies to Non-Executive Directors only. The Board has 
considered the pros and cons of having executives on the Board and 
continues to be of the view that the existing structure is effective in 
ensuring that the Board maintains objectivity and independence from 
management and is appropriate given that the CEO, Executive 
Committee members and most senior managers are based in Chile 
where local company law prohibits CEOs of public companies from 
serving as directors of those companies. 

Although the policy does not cover executive remuneration, the 
Company will continue to embrace the spirit of the UK remuneration 
reporting regulations and the UK Corporate Governance Code by 
voluntarily reporting each year on the remuneration and incentive pay 
design for the CEO as if he were a Director and by providing detailed 
information in relation to the structure and components of the other 
Executive Committee members’ remuneration. 

The Company’s policy is to ensure that Non-Executive Directors are 
fairly rewarded with regard to the responsibilities undertaken, and to 
consider comparable pay levels and structures in the UK, Chile and 
the international mining industry. 

The Chairman’s fees and other terms are set by the Committee. 
Non-Executive Directors’ fees and other terms are set by the Board 
upon recommendation of the Committee.

118

Antofagasta plc Annual Report 2017Purpose

Operation

Maximum opportunity

DIRECTORS
Fees

To attract and retain 
high-calibre, 
experienced Directors 
by offering globally 
competitive fee levels.

Fees are reviewed annually and the competitiveness of 
total fees is assessed against companies of a similar 
nature, size and complexity.

Directors receive a base fee for services to the Company’s 
Board as well as additional fees for chairing or serving as 
a member of any of the Board’s Committees or serving as 
Senior Independent Director. The Chairman receives a 
higher base fee which reflects his responsibility, 
experience and time commitment to the role.

Separate base fees are paid for services to the Antofagasta 
Minerals board (all Non-Executive Directors are members 
of both boards), and for serving as a director, or chairing, 
any subsidiary or joint-venture company boards.

Ramón Jara also receives a base fee for advisory services 
provided to Antofagasta Minerals pursuant to a separate 
service contract. This fee is currently denominated 
in Chilean pesos and is automatically adjusted for 
Chilean inflation.

All other fee levels are currently denominated in US dollars 
and are not automatically adjusted for inflation. The 
Committee may determine fee levels and/or pay fees in 
any other currency if deemed necessary or appropriate.

In normal circumstances, the maximum annual fee 
increase will be 7%. However, the Committee has 
discretion to exceed this in exceptional circumstances, 
for example: 

 − if there is a sustained period of high inflation;

 − if fees are out of line with the market; and/or

 − if fees for chairing or serving as a member of any of the 
Board’s Committees or performing a specific role on the 
Board such as Senior Independent Director are out of 
line with the market.

Any increases will take into account the factors described 
under the heading “Operation”, will not be excessive, and 
the rationale for the increase will be disclosed in the 
Remuneration Report for the relevant financial year.

Fee levels for additional roles within the Group are set 
based on the needs and time commitment expected and 
may be determined and/or paid in a combination of 
currencies including US dollars and Chilean pesos.

Chilean-peso-denominated fees will be increased to take 
account of Chilean inflation and may be reported from one 
year to the next as an increase or decrease as a result of 
exchange rate movements only. Because all amounts are 
reported in US dollars, any exchange rate impact will not 
be taken into account when applying the maximum annual 
fee increase described above.

Variable 
remuneration

Given the non-executive composition of the Board, there are no arrangements for Directors to acquire benefits through the acquisition 
of shares in the Company or any of its subsidiary undertakings, to benefit through performance-related pay or to participate in long-term 
incentive schemes. The Code states that remuneration for Non-Executive Directors should not include share options or other 
performance-related elements.

Benefits

To provide appropriate 
benefits and reimburse 
appropriate expenses 
that are incurred in the 
performance of duties 
of the Directors.

Benefits include the provision of life, accident and health 
insurance and may also include professional advice and 
certain other minor benefits including occasional spousal 
travel in connection with the business and any Company 
business expenses which are deemed to be taxable. The 
Company will pay any tax payable on those benefits on 
behalf of Directors.

The Committee retains the discretion to provide additional 
insurance benefits in accordance with Company policy, 
should this be deemed necessary.

Set at a level appropriate to the individual’s role and 
circumstances. The maximum opportunity will depend on 
the type of benefit and cost of its provision, which will vary 
according to the market and individual circumstances.

Pension

No Director is entitled to pension contributions. The Code considers that the participation by a Non-Executive Director in a company’s pension 
scheme could potentially impact on the independence of that Non-Executive Director.

As Directors do not receive variable remuneration, there are no provisions in place to recover sums paid or to withhold payments made 
to Directors.

SHAREHOLDING REQUIREMENTS
The Company does not currently have shareholding guidelines or 
requirements for Directors. However, Chairman Jean-Paul Luksic and 
Non-Executive Director Andrónico Luksic C are members of the 
Luksic family; members of the Luksic family are interested in the E. 
Abaroa Foundation which controls the Metalinvest Establishment and 
Kupferberg Establishment (which, in aggregate, hold approximately 
60.66% of the Company’s ordinary shares and approximately 94.12% 
of the Company’s preference shares). In addition, Mr Jean-Paul 
Luksic controls the Severe Studere Foundation which in turn, controls 
Aureberg Establishment (which holds approximately 4.26% of the 
Company’s ordinary shares). This creates significant alignment 
between these members of the Board and shareholders.

RECRUITMENT POLICY
The appointment of Non-Executive Directors (including the Chairman) 
is handled through the Nomination and Governance Committee and 
Board processes. The current fee levels are set out in the Directors’ 
Remuneration Report. Details of each element of remuneration paid 
to the Chairman and Directors are set out in the 2016 Directors’ 
Remuneration Report.

The terms of appointment for any new Non-Executive Director 
will be consistent with those in place for current Non-Executive 
Directors as summarised in the service contracts and letters of 
appointment policy detailed on page 120. 

Variable pay will not be considered and, as such, no maximum applies. 
Fees will be consistent with the policy at the time of appointment.

A timely announcement with respect to any Director appointment will 
be made to the regulatory news services and posted on the 
Company’s website.

119

antofagasta.co.ukGOVERNANCE 
 
 
 
REMUNERATION POLICY FOR OTHER EMPLOYEES
Remuneration arrangements are determined throughout the Group 
based on the principle that reward should be granted for delivery 
of the Group’s strategy. A significant proportion of the CEO and 
Executive Committee members’ remuneration is in the form of 
variable pay. The CEO and Executive Committee are eligible to 
participate in the LTIP and Annual Bonus Plan, which are both subject 
to performance criteria aligned with the Group’s strategy. The 
remuneration structure for other Group employees varies according 
to their role, location and working environment.

CONSIDERATION OF SHAREHOLDER VIEWS
The Company maintains a dialogue with institutional shareholders and 
sell-side analysts, as well as potential shareholders. This 
communication is managed by the investor relations team, and 
includes a formal programme of presentations to update institutional 
shareholders and analysts on developments in the Group following the 
announcement of the half-year and full-year results. The Board 
receives regular summaries and feedback in respect of the meetings 
held as part of the Investor Relations programme, as well as receiving 
analysts’ reports on the Company. 

The Senior Independent Director meets with shareholders regularly 
and the Chairman, and the Chairman of the Remuneration and Talent 
Management Committee, are also regularly available to meet 
shareholders to discuss matters of importance, including the Group’s 
remuneration structures. 

The Company’s Annual General Meeting is also used as an opportunity 
to communicate with both institutional and private shareholders.

This ongoing dialogue allows the Company to respond to the needs 
and concerns of all shareholders throughout the year and the 
Directors’ pay arrangements will continue to be reviewed each year 
in line with the policy, taking into account the views of all the 
Company’s shareholders.

DIRECTORS’ REMUNERATION POLICY CONTINUED

TERMINATION POLICY
The letters of appointment for the Non-Executive Directors do not 
provide for any compensation for loss of office beyond payments 
in lieu of notice, and therefore the maximum amount payable upon 
termination of these letters is one month’s payment.

SERVICE CONTRACTS AND LETTERS OF APPOINTMENT
All Directors’ service contracts and letters of appointment are 
available for inspection at the Company’s registered office during 
normal business hours and at the Annual General Meeting (for 15 
minutes prior to and during the meeting).

Each Director has a letter of appointment with the Company. The 
Company has a policy of putting all Directors forward for re-election 
at each Annual General Meeting in accordance with the Corporate 
Governance Code. Under the terms of the letters, if a majority of 
shareholders do not confirm a Director’s appointment or 
reappointment, the appointment will terminate with immediate effect. 
In other circumstances, the appointment may be terminated by either 
the Director or the Company on one month’s prior written notice. The 
letters require the Directors to undertake that they will have sufficient 
time to discharge their responsibilities.

The letters of appointment do not provide for any compensation for 
loss of office beyond payments in lieu of notice, and therefore the 
maximum amount payable upon termination of these appointments 
is one month’s fees.

There is also a contract between Antofagasta Minerals and Asesorías 
Ramón F Jara Ltda (formerly E.I.R.L.) dated 2 November 2004 for the 
provision of advisory services by Ramón Jara. This contract does not 
have an expiry date but can be terminated by either party on one 
month’s notice. The amounts payable under this contract for services 
are denominated in Chilean pesos and, as is typical for employment 
contracts or contracts for services in Chile, are adjusted in line with 
Chilean inflation, and are also reviewed periodically in line with the 
Company’s policy on Directors’ pay.

CONSIDERATION OF EMPLOYMENT CONDITIONS ELSEWHERE 
IN THE COMPANY
When the Committee reviews Director compensation, it also reviews 
pay conditions across the rest of the Group. This is set in the context 
of very different working environments and geographies and 
therefore is not a mechanical process. However, this acts as one 
input into the pay review process. The Committee does not currently 
use any other remuneration comparison metrics when determining 
the quantum and structure of Director compensation and does not 
solicit employees’ views.

120

Antofagasta plc Annual Report 2017RELATIONS WITH SHAREHOLDERS

ENGAGING WITH 
OUR SHAREHOLDERS

The shares of Antofagasta plc are listed on the main market of the London Stock 
Exchange. As explained in the Directors’ Report on page 124, the controlling shareholders 
of the Company hold approximately 65% of the Company’s ordinary shares. The majority 
of the Company’s remaining ordinary shares are held by institutional investors, mainly 
based in the UK and North America.

The Company maintains an active dialogue with institutional 
shareholders and sell-side analysts, as well as potential shareholders. 
This communication is managed by the investor relations team in 
London, and includes a formal programme of presentations and 
roadshows to update institutional shareholders and analysts on 
developments in the Group.

The Company held regular meetings with institutional investors and 
sell-side analysts throughout the year, which included international 
investor roadshows, and presentations at industry conferences and  
to banks’ equity sales forces. These were attended by the CEO and 
various members of the management team, including the CFO, the 
Vice President of Investor Relations, the Vice President of Sales and 
the Vice President of Development.

The Company publishes quarterly production figures as well as the 
half-year and full-year financial results. Copies of these production 
reports, financial results, presentations and other press releases 
issued by the Company are available on the Company’s website. 
The Group also publishes a separate Sustainability Report to 
provide further information on its social and environmental 
performance, which is available on the Company’s website 
in both Spanish and English.

G
O
V
E
R
N
A
N
C
E

WHAT OUR INVESTORS FOCUSED ON MOST IN 2017
 − cost reduction programmes to control operating and capital costs 

and the generation of free cash flow

 − capital allocation

 − impact of events in Chile, including changes to labour laws and 

availability of energy and water

 − mining labour negotiations in Chile

 − the Group’s capital expenditure programme and the potential from 

longer-term growth projects

 − supply and demand factors in the world copper market.

The Board receives regular summaries and feedback in respect of  
the meetings held as part of the investor relations programme. The 
Company’s Annual General Meeting is also used as an opportunity to 
communicate with both institutional and private shareholders. All of 
the Directors met shareholders at the 2017 Annual General Meeting.

CORPORATE GOVERNANCE ENGAGEMENT
Senior Independent Director Ollie Oliveira met with a number of 
proxy advisers and major shareholders in London in October 2016 to 
discuss corporate governance and associated matters relating to the 
Company, its strategy and management performance. These meetings 
were also attended by Non-Executive Director and former Senior 
Independent Director William Hayes, the Company Secretary and the 
Director of the London office. 

At the request of shareholders, the Company sent a letter to proxy 
advisers and the Company’s 20 largest shareholders in Q4 2017, 
providing an update on corporate governance developments during 
the year and offering face-to-face meetings with the Company  
and, if required to discuss a particular topic, the Senior Independent 
Director. A number of invitations were accepted and these meetings 
took place in Q1 2018.

121

antofagasta.co.ukRELATIONS WITH SHAREHOLDERS CONTINUED

2017 SHAREHOLDER ENGAGEMENT CALENDAR

Q1

Q2

 − CEO presented at industry conference for institutional 

 − CEO presented at industry conference for institutional 

investors in the US

investors in Europe

 − 3 days of 1-on-1 meetings with over 55 investors

 − 2 days of 1-on-1 meetings with over 40 investors

 − Presentation of full-year 2016 results by the CEO and 

 − Annual General Meeting in London

CFO

 − US East Coast roadshow – 2 days

 − London roadshow – 3 days

 − Europe roadshow – 1 day

 − Investor relations team attended three conferences, two 

in the UK and one in Chile

 − US West Coast roadshow – 2 days

 − Buy-side analysts visited Los Pelambres

 − Scandinavia roadshow – 1 day

 − Investor relations team attended two industry 

conferences in the UK and one in the US

Q3

Q4

 − CEO presented to the Melbourne Mining Club in Australia 

 − Europe roadshow – 1 day

with roadshow – 2 days

 − Presentation of half-year 2017 results

 − Europe roadshow – 1 day

 − London roadshow – 3 days

 − US East Coast roadshow – 3 days

 − Investor relations team attended four industry 
conferences, three in the UK and one in Chile

 − Sustainable and responsible investment roadshow 

– France and the UK – 2 days

 − CEO lunch with key investors

 − Investor relations team attended three industry 

conferences in the UK

122

Antofagasta plc Annual Report 2017DIRECTORS’ REPORT

DIRECTORS’ REPORT

DIRECTORS
Directors who have served during the year and summaries of current 
Directors’ key skills and experience are set out in the Corporate 
Governance Report on pages 76 to 78.

POST-BALANCE-SHEET EVENTS
There have been no post-balance-sheet events.

FINANCIAL RISK MANAGEMENT
Details of the Company’s policies on financial risk management are 
set out in Note 24 to the financial statements.

RESULTS AND DIVIDENDS
The consolidated profit before tax has increased from $875.9 million 
in 2016 (excluding exceptional items) to $1,830.8 million in 2017.

The Board has recommended a final dividend of 40.6 cents per 
ordinary share (2016 – 15.3 cents). An interim dividend of 10.3 cents 
was paid on 6 October 2017 (2016 interim dividend – 3.1 cents). This 
gives total dividends per share proposed in relation to 2017 of 50.9 
cents (2016 – 18.4 cents) and a total dividend amount in relation to 
2017 of $501.8 million (2016 – $181.4 million).

Preference shares carry the right to a fixed cumulative dividend 
of 5% per annum. The preference shares are classified within 
borrowings and preference dividends are included within finance 
costs. The total cost of dividends paid on preference shares and 
recognised as an expense in the income statement was $0.2 million 
(2016 – $0.2 million). Further information relating to dividends 
is set out in the Financial Review on page 52 and in Note 13 to the 
financial statements.

POLITICAL CONTRIBUTIONS
The Group did not make political donations during the year ended 
31 December 2017 (2016 – nil).

AUDITOR
The Company’s auditor, PwC LLP, has indicated its willingness to 
continue in office and a resolution seeking their reappointment will be 
proposed at the Annual General Meeting.

DISCLOSURE OF INFORMATION TO AUDITORS
The Directors in office at the date of this report have each 
confirmed that:

(a)  so far as they are aware, there is no relevant audit information 

of which the Group’s auditors is unaware; and

(b) 

they have taken all the steps that they ought to have taken as 
Directors in order to make themselves aware of any relevant 
audit information and to establish that the Group’s auditor is 
aware of that information.

CAPITAL STRUCTURE
Details of the authorised and issued ordinary share capital are  
shown in Note 29 to the financial statements. The Company  
has one class of ordinary shares, which carry no right to fixed 
income. Each ordinary share carries one vote at any general  
meeting of the Company.

Details of the preference share capital are shown in Note 22 to the 
financial statements. The preference shares are non-redeemable and 
are entitled to a fixed cumulative dividend of 5% per annum. Each 

preference share carries 100 votes on a poll at any general meeting 
of the Company.

When the preference shares were issued, they carried one vote on a 
poll at any general meeting of the Company in parity with ordinary 
shares in issue at that time. The number of ordinary shares in issue 
has increased since then through stock splits and bonus issues and 
because the preference shares were not split at the same time as the 
ordinary shares, in order to maintain proportionate voting rights 
attaching to the preference shares, the voting rights attaching to 
preference shares have increased to 100 votes on a poll at any 
general meeting of the Company.

There are no specific restrictions on the transfer of shares or on their 
voting rights beyond those standard provisions set out in the 
Company’s Articles of Association and other provisions of applicable 
law and regulation (including, in particular, following a failure to 
provide the Company with information about interests in shares as 
required by the Companies Act 2006). The Company is not aware of 
any agreements between holders of the Company’s shares that may 
result in restrictions on the transfer of securities or on voting rights.

With regard to the appointment and replacement of Directors, the 
Company is governed by, and has regard to, its Articles of 
Association, the UK Corporate Governance Code 2016, the Companies 
Act 2006 and related legislation. The Articles of Association may be 
amended by special resolution of the shareholders. There are no 
significant agreements in place that take effect, alter or terminate 
upon a change of control of the Company. There are no agreements 
in place between the Company and its Directors or employees that 
provide for compensation for loss of office resulting from a change 
of control of the Company.

The percentages of the total nominal share capital of the Company 
represented by each class of share are:

Class
Ordinary shares  
of 5p each
Preference shares 
of £1.00 each

Number in issue
985,865,695

Nominal value  
per share
5p

Percentage  
of capital
96.10%

2,000,000

£1

3.90%

AUTHORITY TO ISSUE SHARES AND AUTHORITY TO PURCHASE 
OWN SHARES
At the 2017 AGM, held on 24 May 2017, authority was given to the 
Directors to allot unissued relevant securities in the Company up to a 
maximum amount equivalent to two-thirds of the shares in issue (of 
which one-third may only be offered by way of rights issue). This 
authority expires on the date of this year’s AGM, scheduled to be held 
on 23 May 2018. No such shares have been issued as at the date of 
this report or during the year. The Directors propose to seek renewal 
of this authority at this year’s AGM. 

A further special resolution passed at the 2017 AGM granted authority 
to the Directors to allot equity securities in the Company for cash, 
without regard to the pre-emption provisions of the Companies Act 
2006. This authority also expires on the date of this year’s AGM and 
the Directors will seek to renew this authority on similar terms by 
way of two separate resolutions, in line with the Investment 
Association’s guidance and the Pre-Emption Group’s Statement 
of Principles.

123

antofagasta.co.ukGOVERNANCEDIRECTORS’ REPORT CONTINUED

The Company was also authorised by a shareholders’ resolution 
passed at the 2017 AGM to purchase up to 10% of its issued ordinary 
share capital. Any shares which have been bought back may be held 
as treasury shares or, if not so held, must be cancelled immediately 
upon completion of the purchase, thereby reducing the amount of the 
Company’s issued and authorised share capital. This authority will 
expire at this year’s AGM and a resolution to renew the authority for 
a further year will be proposed. No shares were purchased by the 
Company during the year.

DIRECTORS’ INTERESTS AND INDEMNITIES
Details of Directors’ contracts and letters of appointment, 
remuneration and emoluments, and their interests in the shares of 
the Company as at 31 December 2017, are given in the Directors’ 
Remuneration Report. No Director had any material interest in a 
contract of significance (other than a service contract) with the 
Company or any subsidiary company during the year.

In accordance with the Company’s Articles of Association and to 
the extent permitted by the laws of England and Wales, Directors are 
granted an indemnity from the Company in respect of liabilities 
personally incurred as a result of their office. The Company also 
maintained a Directors’ and Officers’ liability insurance policy 
throughout the financial year. A new policy has been entered into 
for the current financial year.

CONFLICTS OF INTEREST
Each year, the Directors complete a form identifying interests 
that may constitute a conflict of interest including, for example, 
directorships in other companies. Directors are also required to 
notify the Company during the year of any material changes in 
those positions or situations.

The Board, with assistance from the Nomination and Governance 
Committee, considers the potential and actual conflict situations and 
decides in relation to each situation whether to authorise it and the 
steps, if any, which need to be taken to manage it.

The authorisation process is not regarded as a substitute for 
managing an actual conflict of interest if one arises, and the 
monitoring, and, if appropriate, authorisation of actual and potential 
conflicts of interest is an ongoing process.

124

SUBSTANTIAL SHAREHOLDINGS
As at 31 December 2017 and 12 March 2018, the following significant 
holdings of voting rights in the share capital of the Company had been 
disclosed to the Company under Disclosure and Transparency Rule 5:

Shareholder 
1. Metalinvest Establishment
2. Kupferberg Establishment
3. Aureberg Establishment

Ordinary share 
capital %
50.72
9.94
4.26

Preference 
share 
capital %
94.12
–
–

Total share 
capital %
58.04
8.27 
3.54

Metalinvest Establishment and Kupferberg Establishment are both 
controlled by the E. Abaroa Foundation (“Abaroa”), in which members 
of the Luksic family are interested. As explained in Note 35 to the 
financial statements, Metalinvest Establishment is the immediate 
Parent Company of the Group and the E. Abaroa Foundation is the 
ultimate Parent Company. Aureberg Establishment is controlled by the 
Severe Studere Foundation that, in turn, is controlled by Jean-Paul 
Luksic, the Chairman of the Company.

EXPLORATION AND RESEARCH AND DEVELOPMENT
The Group’s operating companies carry out exploration and research 
and development activities that are necessary to support and expand 
their operations.

OTHER STATUTORY DISCLOSURES
The Corporate Governance Report on pages 66 to 122, the Statement 
of Directors’ Responsibilities on page 125 and Note 24 to the financial 
statements are incorporated into this Directors’ Report by reference.

Other information can be found in the following sections of the 
Strategic Report:

Future developments in the business 
of the Group
Viability and going concern statement
Subsidiaries, associates and joint ventures 
Employee consultation
Greenhouse gas emissions

Location in  
Strategic Report
Pages 28 to 47

Page 18
Pages 28 to 47
Pages 31 to 32
Page 64

Disclosures required pursuant to Listing Rule 9.8.4R can be found 
on the following pages of the Annual Report:

Location in  
Annual Report
See Notes 5, 9 and 15 
to the financial 
statements on Pages 
147 to 151, 157 and 162 
and 163.
Page 73

Statement of interest capitalised by the 
Group (LR 9.8.4(1))

Relationship agreement (LR 9.8.4(14))

By order of the Board

Julian Anderson
Company Secretary

12 March 2018

Antofagasta plc Annual Report 2017 
 
DIRECTORS’ 
RESPONSIBILITIES

STATEMENT OF DIRECTORS’ 
RESPONSIBILITIES IN RELATION  
TO THE FINANCIAL STATEMENTS
The Directors are responsible for preparing the Annual Report, the 
Directors’ Remuneration Report and the financial statements in 
accordance with the applicable law and regulations.

Company law requires the Directors to prepare financial statements 
for each financial year. Under that law, the Directors have prepared 
the Group financial statements in accordance with International 
Financial Reporting Standards (“IFRS”) as adopted by the European 
Union, and the Parent Company financial statements in accordance 
with United Kingdom Generally Accepted Accounting Practice (United 
Kingdom Accounting Standards and applicable law), including 
Financial Reporting Standard 101 Reduced Disclosure Framework 
(“FRS 101”). Under company law, the Directors must not approve the 
financial statements unless they are satisfied that they give a true and 
fair view of the state of affairs of the Group and the Company and of 
the profit or loss of the Group for that period. In preparing these 
financial statements, the Directors are required to:

The Directors are responsible for the maintenance and integrity of the 
Company’s website. Legislation in the United Kingdom governing the 
preparation and dissemination of financial statements may differ from 
legislation in other jurisdictions.

The Directors consider that the Annual Report and financial 
statements, taken as a whole, is fair, balanced and understandable 
and provides the information necessary for shareholders to assess the 
Company’s position and performance, business model and strategy.

Each of the Directors, whose names and functions are listed in the 
Corporate Governance Report, confirms that to the best of his or 
her knowledge:

 − the Group financial statements, which have been prepared in 

accordance with IFRS as adopted by the EU, give a true and fair 
view of the assets, liabilities, financial position and profit of the 
Group, and

 − the Strategic Report and the Directors’ Report include a fair review 

of the development and performance of the business and the 
position of the Group, together with a description of the principal 
risks and uncertainties that it faces.

 − select suitable accounting policies and then apply them consistently

By order of the Board

Jean-Paul Luksic  
Chairman   

Ollie Oliveira
Senior Independent Director

12 March 2018

 − make judgements and accounting estimates that are reasonable 

and prudent

 − state whether the IFRS as adopted by the European Union and 

applicable UK Accounting Standards, including FRS 101, have been 
followed, subject to any material departures disclosed and 
explained in the Group and Parent Company Financial Statements

 − prepare the Financial Statements on the going concern basis 

unless it is inappropriate to presume that the Company will continue 
in business.

The Directors are responsible for keeping adequate accounting 
records that are sufficient to show and explain the Company’s 
transactions and disclose with reasonable accuracy at any time the 
financial position of the Company and the Group and enable them to 
ensure that the financial statements and the Directors’ Remuneration 
Report comply with the Companies Act 2006 and, as regards the 
Group financial statements, Article 4 of the IAS Regulation. They are 
also responsible for safeguarding the assets of the Company and the 
Group and hence for taking reasonable steps for the prevention and 
detection of fraud and other irregularities.

125

antofagasta.co.ukGOVERNANCE 
 
COMMITTED  
TO OUR FINANCIAL 
PERFORMANCE

FINANCIAL STATEMENTS
128 
Independent auditors’ report
133 
Consolidated income statement
Consolidated statement 
of comprehensive income 
Consolidated statement 
of changes in equity
Consolidated balance sheet
Consolidated cash flow statement
Notes to the financial statements
Parent company financial 
statements

134
135 
136 
137 

186

134

OTHER INFORMATION

Five-year summary
Production statistics 
Ore reserves and mineral 
resources estimates
Glossary and definitions
Shareholder information
Directors and advisers

193
195

196
206
211 
IBC

INDEPENDENT AUDITORS’ REPORT TO THE MEMBERS OF ANTOFAGASTA PLC 

Basis for opinion 
We conducted our audit in accordance with International Standards on 
Auditing (UK) (“ISAs (UK)”) and applicable law. Our responsibilities under 
ISAs (UK) are further described in the Auditors’ responsibilities for the audit 
of the financial statements section of our report. We believe that the audit 
evidence we have obtained is sufficient and appropriate to provide a basis 
for our opinion. 

Independence 
We remained independent of the group in accordance with the ethical 
requirements that are relevant to our audit of the financial statements in  
the UK, which includes the FRC’s Ethical Standard, as applicable to listed 
public interest entities, and we have fulfilled our other ethical responsibilities 
in accordance with these requirements. 

To the best of our knowledge and belief, we declare that non-audit services 
prohibited by the FRC’s Ethical Standard were not provided to the group or 
the parent company. 

Other than those disclosed in note 7 to the financial statements, we have 
provided no non-audit services to the group or the parent company in  
the period from 1 January 2017 to 31 December 2017. 

REPORT ON THE AUDIT OF THE FINANCIAL 
STATEMENTS 
Opinion 
In our opinion, Antofagasta plc’s group financial statements and parent 
company financial statements (the “financial statements”): 

–  give a true and fair view of the state of the group’s and of the parent 

company’s affairs as at 31 December 2017 and of the group’s profit and 
the group’s and the parent company’s cash flows for the year then ended; 

–  have been properly prepared in accordance with IFRSs as adopted  

by the European Union and, as regards the parent company’s financial 
statements, as applied in accordance with the provisions of the 
Companies Act 2006; and 

–  have been prepared in accordance with the requirements of the 

Companies Act 2006 and, as regards the group financial statements, 
Article 4 of the IAS Regulation. 

We have audited the financial statements, included within the Annual Report 
and Financial Statements (the “Annual Report”), which comprise: the group 
and parent company balance sheet as at 31 December 2017; the group 
income statement and statement of comprehensive income, the group 
statement of cash flows, and the group and parent company statements  
of changes in equity for the year then ended; and the notes to the financial 
statements, which include a description of the significant accounting policies. 

Our opinion is consistent with our reporting to the Audit Committee. 

Our audit approach 
Overview 

MATERIALITY

–  Overall group materiality: $49 million (2016: $45 million), based on 5% of three-year average profit before  

tax adjusted for one-off items. 

–  Overall parent company materiality: $18 million (2016: $17 million), based on 1% of Total Assets. 

AUDIT SCOPE

–  We identified the four mine sites, Los Pelambres, Centinela, Antucoya and Zaldívar, which in our view, required 

an audit of their complete financial information. 

–  Taken together, the locations and functions where we performed our audit work accounted for 96% of revenue 

and approximately 94% of absolute adjusted profit before tax (i.e. the sum of the numerical values without 
regard to whether they were profits or losses for the relevant locations and functions). 

AREAS OF 
FOCUS

–  Impairment indicator assessments at Antucoya and Centinela, carrying value of the Twin Metals project assets, 

and the valuation of inventory stockpiles at Centinela and Zaldívar. 

128 
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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
The scope of our audit 
As part of designing our audit, we determined materiality and assessed the risks of material misstatement in the financial statements. In particular, we  
looked at where the directors made subjective judgements, for example in respect of significant accounting estimates that involved making assumptions  
and considering future events that are inherently uncertain.  

We gained an understanding of the legal and regulatory framework applicable to the group and the industry in which it operates, and considered the risk of 
acts by the group which were contrary to applicable laws and regulations, including fraud. We designed audit procedures at group and significant component 
level to respond to the risk, recognising that the risk of not detecting a material misstatement due to fraud is higher than the risk of not detecting one resulting 
from error, as fraud may involve deliberate concealment by, for example, forgery or intentional misrepresentations, or through collusion.  

We designed audit procedures that focused on the risk that non-compliance with the Companies Act 2006 and the UK Listing Rules, gives rise to a material 
misstatement in the financial statements. In assessing compliance with laws and regulations, our tests included checking the financial statement disclosures 
to underlying supporting documentation, assessment of certain component auditors’ work, enquiries with management and enquiries of legal counsel. There 
are inherent limitations in the audit procedures described above and the further removed non-compliance with laws and regulations is from the events and 
transactions reflected in the financial statements, the less likely we would become aware of it. 

We did not identify any key audit matters relating to irregularities, including fraud. As in all of our audits we also addressed the risk of management override 
of internal controls, including testing journals and evaluating whether there was evidence of bias by the directors that represented a risk of material 
misstatement due to fraud. 

Key audit matters 
Key audit matters are those matters that, in the auditors’ professional judgement, were of most significance in the audit of the financial statements of the current 
period and include the most significant assessed risks of material misstatement (whether or not due to fraud) identified by the auditors, including those which had 
the greatest effect on: the overall audit strategy; the allocation of resources in the audit; and directing the efforts of the engagement team. These matters, and any 
comments we make on the results of our procedures thereon, were addressed in the context of our audit of the financial statements as a whole, and in forming 
our opinion thereon, and we do not provide a separate opinion on these matters. This is not a complete list of all risks identified by our audit.  

 Key audit matter 

How our audit addressed the key audit matter 

Impairment indicator assessments at Antucoya and Centinela 
In accordance with IAS 36 “Impairment of assets” the Directors are 
required to perform a review for impairment of long-lived assets at  
any time an indicator of impairment exists. 

There is a heightened level of impairment risk at Antucoya from the 
perspective of its high cost base; and Centinela from the perspective if its 
sensitivity to changes in the long term copper price, and that a significant 
portion of its value is dependent upon an expansion project that has not  
yet been formally approved. 

Based on the Directors considerations of the results of their carrying value 
review, they concluded that no impairment indicators existed in respect of 
Antucoya and Centinela.  

In considering whether there were indicators of impairment, and to support 
the sensitivity analysis, the Directors considered the recoverable amount 
of the CGU’s. As a value-in-use methodology does not permit future 
expansion or optimisation plans to be included within the discounted cash 
flow model, the Directors have used a FVLCD valuation methodology to 
determine the recoverable amount, applying assumptions that a market 
participant would use to determine fair value. 

Refer to Note 4 Exceptional Items. 

  We considered the Directors’ impairment trigger analysis and agree that  
no impairment indicators existed. Our consideration is described below,  
and incorporates consideration of sensitivity disclosures and the need for 
impairment reversals. 

We evaluated the Directors’ future cash flow forecasts, and the process by 
which they were drawn up, including verifying the mathematical accuracy of  
the cash flow models and agreeing future capital and operating expenditure to 
the latest Board approved budgets and the latest approved Life of Mine plans.  
We assessed the reasonableness of the Directors’ future capital and operating 
expenses in light of their historical accuracy and the current operational results 
and concluded the forecasts had been appropriately prepared, based on updated 
assessments of future operational performance and cost savings initiatives. With 
respect to Centinela, the Directors confirmed to us that they expected to approve 
the expansion project within the next 12 months. 

Utilising our valuation experts, we evaluated the appropriateness of key market 
related assumptions in the Directors’ valuation models, including the copper 
prices, discount rates and foreign currency exchange rates. We noted that the 
recoverable amounts were particularly sensitive to changes in the long-term 
copper price assumption. We formed an independent view of the copper price 
that a market participant might use in a fair value less cost to dispose scenario. 
We found that the Directors’ long-term copper price assumption of $3.00/lb  
was within a reasonable range.  

We independently calculated a weighted average cost of capital by making 
reference to market data, and considering the CGU specific risks. The discount 
rate used by the Directors’ of 8% fell within a reasonable range. We performed 
sensitivity analysis around the key assumptions within the cash flow forecasts.  

In light of the above, we reviewed the appropriateness of the related disclosures 
in Note 4 of the financial statements, including the sensitivities provided, and 
concluded they were appropriate. 

antofagasta.co.uk 

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INDEPENDENT AUDITORS’ REPORT TO THE MEMBERS OF ANTOFAGASTA PLC CONTINUED 

 Key audit matter 

How our audit addressed the key audit matter 

Twin Metals 
In the prior year a potential impairment indicator with respect to the Twin 
Metals project was noted due to the non-renewal of two of the mining 
leases. However in December 2017 the US Department of the Interior 
(“DOI”) confirmed Twin Metals’ right to renew the leases. This replaced  
the DOI’s previous legal opinion from March 2016, which had served as  
the basis for the December 2016 action by the Bureau of Land 
Management and the US Forest Service to deny the renewal of the  
two leases. The Directors concluded that this positive legal development, 
along with consideration of the current forecasts of the potential value to 
be generated by the project, supported the conclusion that no adjustment 
to the carrying value of the project’s assets was necessary. 

  We considered the status of the licences and whether this was an indicator  
of impairment. In addition to a site visit to Ely, Minnesota, to enhance our 
understanding of the project and its economics, we have reviewed the 
developments in respect of the renewal of the project’s mining leases, 
obtaining legal representations in respect of the December 2017  
confirmation from the DOI.  

As a consequence of the above, we concluded there to be no impairment  
of the carrying value of capitalised assets relating to the project. 

Valuation of inventory stockpiles at Centinela and Zaldívar 
Both Centinela and Zalidívar have a significant amount of working capital 
tied up in inventory stockpiles. There are a number of complexities involved 
in the determination of the grade and recovery assumptions that form the 
basis for the valuation of these inventory stockpiles. 

On a periodic basis, the Directors monitor the specific accounting policies 
applied to these inventory balances, the level of headroom indicated by  
net realisable value tests, the forecast future movements in the value of  
the balances and any other specific issues which may arise. These reviews 
have not indicated any concerns with the carrying value of the group’s 
inventory balances as at 31 December 2017. 

The group engaged an independent expert to review the physical properties 
of the group’s inventory stockpiles as at the 31 December 2017. In addition  
to assessing the competency and objectivity of the expert, we have read the 
expert’s report and discussed with the expert their valuation methodology  
for inventory, along with the key judgements they made.  

In addition to the above, we have performed a detailed review of the Directors 
net realisable value tests. These tests support the Directors view that there 
are no concerns with the carrying value of the group’s inventory balances  
as at 31 December 2017. 

How we tailored the audit scope 
We tailored the scope of our audit to ensure that we performed enough work to be able to give an opinion on the financial statements as a whole, taking  
into account the structure of the group and the parent company, the accounting processes and controls, and the industry in which they operate. 

The core mining business consists of four assets: Los Pelambres and Centinela; Antucoya; and Zaldívar, a joint venture with Barrick Gold Corporation 
operated by the group. These mines produce copper cathodes, copper concentrates and significant volumes of by-products. 

In addition to mining, the group has a transport division that provides rail and road cargo services in northern Chile predominantly to mining customers, 
including to the group’s own operations. 

All of the above operations are located in Chile. In addition, the group has corporate head offices located in both Santiago, Chile (Antofagasta Minerals)  
and London, UK (Antofagasta plc). The group also has exploration projects in various countries. 

In establishing the overall approach to the group audit, we determined the type of work that needed to be performed at each of the four mine sites and the 
corporate offices in Chile, by us, as the group engagement team and by component auditors from PwC Chile operating under our instruction. Los Pelambres 
and Centinela were considered to be financially significant components of the group, due to their contribution towards group profit before tax, and so required 
audits of their complete financial information. Antucoya and Zaldívar were also subject to an audit of their complete financial information, in response to the 
elevated risk of impairment to Antucoya’s carrying value and the carrying value of inventory at Zaldívar. 

We also requested that component auditors perform specified procedures over the corporate offices in Chile, and specific line items of other entities within 
the group to ensure that we had sufficient coverage from our audit work for each line of the group’s financial statements. For all other non-financially 
significant components, the group team performed analytical review procedures. 

Where work was performed by component auditors, we determined the level of involvement we needed to have in the audit work to be able to conclude 
whether sufficient appropriate audit evidence had been obtained as a basis for our opinion on the group financial statements as a whole. 

UK resources were seconded to PwC Chile to be an integral part of the team. In addition the Senior Statutory Auditor visited Chile three times, including  
one mine site, and attended key audit meetings with management and met with our component auditors. The group team also reviewed the component 
auditor working papers, attended local audit clearance meetings, and reviewed other forms of communications dealing with significant accounting and 
auditing issues. 

130 
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Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
Materiality 
The scope of our audit was influenced by our application of materiality. We set certain quantitative thresholds for materiality. These, together with qualitative 
considerations, helped us to determine the scope of our audit and the nature, timing and extent of our audit procedures on the individual financial statement 
line items and disclosures and in evaluating the effect of misstatements, both individually and in aggregate on the financial statements as a whole. 

Based on our professional judgement, we determined materiality for the financial statements as a whole as follows: 

Group financial statements 

Overall materiality  $49 million (2016: $45 million). 

Parent company financial statements 

$18 million (2016: $17 million). 

How we 
determined it 

Rationale for 
benchmark applied 

5% of three-year average profit before tax adjusted for one off items. 

1% of Total Assets. 

We believe that profit before tax adjusted for one-off items is the primary 
measure in assessing the performance of the group, and is a generally accepted 
auditing benchmark. We used a three-year average due to the impact on profit 
before tax of the inherent volatility in copper commodity prices, and adjusted for 
one-off items to eliminate the volatility that they introduce. 

As the parent company is a non-operating holding 
company we will use total assets as our benchmark.  
As the parent company is PIE we will use a 1% rule  
of thumb. 

For each component in the scope of our group audit, we allocated a materiality that is less than our overall group materiality. The range of materiality 
allocated across components was between $10 million and $30 million. Certain components were audited to a local statutory audit materiality that was  
also less than our overall group materiality. 

We agreed with the Audit Committee that we would report to them misstatements identified during our audit above $1.5 million (group audit) (2016: $1.5 
million) and $923,000 (parent company audit) (2016: $874,000) as well as misstatements below those amounts that, in our view, warranted reporting for 
qualitative reasons. 

Going concern 
In accordance with ISAs (UK) we report as follows: 

 Reporting obligation 

Outcome 

We are required to report if we have anything material to add or draw attention to in respect  
of the directors’ statement in the financial statements about whether the directors considered it 
appropriate to adopt the going concern basis of accounting in preparing the financial statements 
and the directors’ identification of any material uncertainties to the group’s and the parent 
company’s ability to continue as a going concern over a period of at least twelve months  
from the date of approval of the financial statements. 

We have nothing material to add or to draw attention  
to. However, because not all future events or conditions 
can be predicted, this statement is not a guarantee as to 
the group’s and parent company’s ability to continue as  
a going concern. 

We are required to report if the directors’ statement relating to Going Concern in accordance 
with Listing Rule 9.8.6R(3) is materially inconsistent with our knowledge obtained in the audit. 

We have nothing to report. 

REPORTING ON OTHER INFORMATION 
The other information comprises all of the information in the Annual Report 
other than the financial statements and our auditors’ report thereon. The 
directors are responsible for the other information. Our opinion on the 
financial statements does not cover the other information and, accordingly, 
we do not express an audit opinion or, except to the extent otherwise 
explicitly stated in this report, any form of assurance thereon.  

In connection with our audit of the financial statements, our responsibility  
is to read the other information and, in doing so, consider whether the other 
information is materially inconsistent with the financial statements or our 
knowledge obtained in the audit, or otherwise appears to be materially 
misstated. If we identify an apparent material inconsistency or material 
misstatement, we are required to perform procedures to conclude whether 
there is a material misstatement of the financial statements or a material 
misstatement of the other information. If, based on the work we have 
performed, we conclude that there is a material misstatement of this other 
information, we are required to report that fact. We have nothing to report 
based on these responsibilities. 

With respect to the Strategic Report and Directors’ Report, we also 
considered whether the disclosures required by the UK Companies Act 
2006 have been included.  

Based on the responsibilities described above and our work undertaken in 
the course of the audit, the Companies Act 2006, (CA06), ISAs (UK) and  
the Listing Rules of the Financial Conduct Authority (FCA) require us also  
to report certain opinions and matters as described below (required by ISAs 
(UK) unless otherwise stated). 

STRATEGIC REPORT AND DIRECTORS’ REPORT 
In our opinion, based on the work undertaken in the course of the audit, the 
information given in the Strategic Report and Directors’ Report for the year  
ended 31 December 2017 is consistent with the financial statements and has  
been prepared in accordance with applicable legal requirements. (CA06) 

In light of the knowledge and understanding of the group and parent company  
and their environment obtained in the course of the audit, we did not identify any 
material misstatements in the Strategic Report and Directors’ Report. (CA06) 

THE DIRECTORS’ ASSESSMENT OF THE PROSPECTS OF THE 
GROUP AND OF THE PRINCIPAL RISKS THAT WOULD THREATEN 
THE SOLVENCY OR LIQUIDITY OF THE GROUP 
We have nothing material to add or draw attention to regarding: 

–  The directors’ confirmation on page 19 of the Annual Report that they  

have carried out a robust assessment of the principal risks facing the group, 
including those that would threaten its business model, future performance, 
solvency or liquidity. 

–  The disclosures in the Annual Report that describe those risks and explain 

how they are being managed or mitigated. 

–  The directors’ explanation on page 18 of the Annual Report as to how they 

have assessed the prospects of the group, over what period they have done 
so and why they consider that period to be appropriate, and their statement 
as to whether they have a reasonable expectation that the group will be able 
to continue in operation and meet its liabilities as they fall due over the period 
of their assessment, including any related disclosures drawing attention to 
any necessary qualifications or assumptions. 

antofagasta.co.uk 

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131

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
INDEPENDENT AUDITORS’ REPORT TO THE MEMBERS OF ANTOFAGASTA PLC CONTINUED 

We have nothing to report having performed a review of the directors’ 
statement that they have carried out a robust assessment of the principal 
risks facing the group and statement in relation to the longer-term viability  
of the group. Our review was substantially less in scope than an audit and 
only consisted of making inquiries and considering the directors’ process 
supporting their statements; checking that the statements are in alignment 
with the relevant provisions of the UK Corporate Governance Code (the 
“Code”); and considering whether the statements are consistent with the 
knowledge and understanding of the group and parent company and their 
environment obtained in the course of the audit. (Listing Rules) 

OTHER CODE PROVISIONS 
We have nothing to report in respect of our responsibility to report when: 

–  The statement given by the directors, on page 125, that they consider the 
Annual Report taken as a whole to be fair, balanced and understandable, 
and provides the information necessary for the members to assess the 
group’s and parent company’s position and performance, business model 
and strategy is materially inconsistent with our knowledge of the group 
and parent company obtained in the course of performing our audit. 

–  The section of the Annual Report on pages 90 to 95 describing the  
work of the Audit Committee does not appropriately address matters 
communicated by us to the Audit Committee. 

–  The directors’ statement relating to the parent company’s compliance 
with the Code does not properly disclose a departure from a relevant 
provision of the Code specified, under the Listing Rules, for review by  
the auditors. 

DIRECTORS’ REMUNERATION 
In our opinion, the part of the Directors’ Remuneration Report to be audited has 
been properly prepared in accordance with the Companies Act 2006. (CA06) 
RESPONSIBILITIES FOR THE FINANCIAL 
STATEMENTS AND THE AUDIT 
RESPONSIBILITIES OF THE DIRECTORS FOR THE FINANCIAL 
STATEMENTS 
As explained more fully in the Directors’ Responsibilities Statement set  
out on page 125, the directors are responsible for the preparation of the 
financial statements in accordance with the applicable framework and for 
being satisfied that they give a true and fair view. The directors are also 
responsible for such internal control as they determine is necessary to 
enable the preparation of financial statements that are free from material 
misstatement, whether due to fraud or error. 

In preparing the financial statements, the directors are responsible for 
assessing the group’s and the parent company’s ability to continue as a 
going concern, disclosing as applicable, matters related to going concern  
and using the going concern basis of accounting unless the directors either 
intend to liquidate the group or the parent company or to cease operations, 
or have no realistic alternative but to do so. 

AUDITORS’ RESPONSIBILITIES FOR THE AUDIT OF THE FINANCIAL 
STATEMENTS 
Our objectives are to obtain reasonable assurance about whether the 
financial statements as a whole are free from material misstatement, 
whether due to fraud or error, and to issue an auditors’ report that includes 
our opinion. Reasonable assurance is a high level of assurance, but is not a 
guarantee that an audit conducted in accordance with ISAs (UK) will always 
detect a material misstatement when it exists. Misstatements can arise from 
fraud or error and are considered material if, individually or in the aggregate, 
they could reasonably be expected to influence the economic decisions of 
users taken on the basis of these financial statements.  

A further description of our responsibilities for the audit of the financial statements 
is located on the FRC’s website at: www.frc.org.uk/auditorsresponsibilities. This 
description forms part of our auditors’ report. 

USE OF THIS REPORT 
This report, including the opinions, has been prepared for and only for the 
parent company’s members as a body in accordance with Chapter 3 of Part 
16 of the Companies Act 2006 and for no other purpose. We do not, in giving 
these opinions, accept or assume responsibility for any other purpose or to 
any other person to whom this report is shown or into whose hands it may 
come save where expressly agreed by our prior consent in writing. 
OTHER REQUIRED REPORTING 
COMPANIES ACT 2006 EXCEPTION REPORTING 
Under the Companies Act 2006 we are required to report to you if, in  
our opinion: 

–  we have not received all the information and explanations we require  

for our audit; or 

–  adequate accounting records have not been kept by the parent company, 
or returns adequate for our audit have not been received from branches 
not visited by us; or 

–  certain disclosures of directors’ remuneration specified by law are not 

made; or 

–  the parent company financial statements and the part of the Directors’ 
Remuneration Report to be audited are not in agreement with the 
accounting records and returns.  

We have no exceptions to report arising from this responsibility.  

APPOINTMENT 
Following the recommendation of the audit committee, we were appointed 
by the members on 20 May 2015 to audit the financial statements for the 
year ended 31 December 2015 and subsequent financial periods. The period 
of total uninterrupted engagement is 3 years, covering the years ended  
31 December 2015 to 31 December 2017. 

Jason Burkitt  
Senior Statutory Auditor 

for and on behalf of PricewaterhouseCoopers LLP 
Chartered Accountants and Statutory Auditors 

London 

12 March 2018 

132 
132

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS 

CONSOLIDATED INCOME STATEMENT 
For the year ended 31 December 2017 

Group revenue 

Total operating costs 

Operating profit/(loss) from subsidiaries 
Net share of results from associates and joint ventures 

Total profit/(loss) from operations, associates and joint ventures 

Investment income 

Interest expense 

Other finance items 

Net finance expense 

Profit/(loss) before tax 

Income tax (expense)/credit 

Profit/(loss) for the financial year from continuing operations 

Profit for the financial year from discontinued operations 

Profit/(loss) for the year 

Attributable to: 

Non-controlling interests 

Owners of the parent 

Basic earnings/(losses) per share 

From continuing operations 

From discontinued operations 

Total continuing and discontinued operations 

Notes 

5,6 

5,7 

5,17 

5,7 

9 

5 

10 

5 

11 

30 

12 

12 

2017 
$m 

4,749.4   

(2,908.3)

1,841.1   

59.7   

1,900.8   

23.8   

(91.5)

(2.3)

(70.0)

1,830.8   

(633.6)

1,197.2   

0.5   

1,197.7   

447.1   

750.6   

Before exceptional  
items  
2016 
$m 

Exceptional items 
(Note 4) 
2016 
$m 

 3,621.7 

(2,698.1) 

923.6  

23.4 

947.0 

26.9 

(86.1) 

(11.9) 

(71.1) 

875.9 

(313.5) 

562.4 

38.3 

600.7 

220.9 

379.8 

2016 
$m 

 3,621.7 

(3,154.7)

467.0 

(111.3)

355.7 

26.9 

(86.1)

(11.9)

(71.1)

284.6 

(108.6)

176.0 

38.3 

214.3 

– 

(456.6)

(456.6)  

(134.7)  

(591.3)  

– 

– 

– 

– 

(591.3)  

204.9 

(386.4)  

– 

(386.4)  

(164.6)  

(221.8)  

56.3 

158.0 

US cents 

US cents 

US cents 

US cents 

76.1   

0.1   

76.2   

34.7 

3.9 

38.6 

(22.6)  

– 

(22.6)  

12.1 

3.9 

16.0 

antofagasta.co.uk 

133 
133

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME 
For the year ended 31 December 2017 

Profit for the year 

Items that may be subsequently reclassified to profit or loss:  

Losses in fair value of cash flow hedges deferred in reserves 

Share of other comprehensive gains of associates and joint ventures, net of tax 

Gains in fair value of available-for-sale investments 

Deferred tax effects arising on cash flow hedges deferred in reserves 

Losses in fair value of cash flow hedges transferred to the income statement  

Share of other comprehensive loss of equity accounted units transferred to the income statement 

Deferred tax effects arising on amounts transferred to the income statement 

Total items that may be subsequently reclassified to profit or loss 

Items that will not be subsequently reclassified to profit or loss: 

Actuarial gains on defined benefit plans 

Tax on items recognised through Other Comprehensive Income which will not be reclassified to profit or 
loss in the future 

Total items that will not be subsequently reclassified to profit or loss 

Total other comprehensive income 

Total comprehensive income for the year 

Attributable to: 

Non-controlling interests 

Owners of the parent 

Note 

5 

24 

17 

18 

24 

24 

27 

2017 
$m 

1,197.7   

(16.8)  

–   

1.4    

(1.0)  

18.0    

–   

0.3   

1.9   

26 

5.7   

(1.0)  

4.7   

6.6   

1,204.3   

2016 
$m 

214.3 

(3.5)

4.4 

1.7 

0.6 

5.8 

52.6 

(1.4)

60.2 

7.8 

(1.3)

6.5 

66.7 

281.0 

30 

448.8   

755.5   

24.9 

256.1 

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY 
For the year ended 31 December 2017 

At 1 January 2016 

Profit for the year 

Other comprehensive income for the year 

Dividends 

At 31 December 2016 

Profit for the year 

Other comprehensive income for the year 

Dividends 

At 31 December 2017 

Share capital 
$m 

Share premium 
$m 

Other reserves 
(note 29) 
$m 

Retained 
earnings (note 
29) 
$m 

Equity 
attributable  
to equity  
owners of  
the parent 
$m 

Non-controlling 
interests 
$m 

Total 
Equity 
$m 

89.8 

199.2 

(59.3)

6,416.4 

6,646.1 

1,873.2 

8,519.3 

– 

– 

– 

– 

– 

– 

– 

37.0 

– 

158.0 

4.8 

(30.6)

158.0 

41.8 

56.3 

24.9 

214.3 

66.7 

(30.6) 

(260.0) 

(290.6)

89.8 

199.2 

(22.3)

6,548.6 

6,815.3 

1,694.4 

8,509.7 

– 

– 

– 

– 

– 

– 

– 

9.8 

– 

750.6 

(4.9)

(252.4)

750.6 

4.9 

447.1 

1,197.7 

1.7 

6.6 

(252.4) 

(320.0) 

(572.4)

89.8 

199.2 

(12.5)

7,041.9 

7,318.4 

1,823.2 

9,141.6 

134 
134

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
CONSOLIDATED BALANCE SHEET 
As at 31 December 2017 

Non-current assets 

Intangible assets 

Property, plant and equipment 

Other non-current assets 

Inventories 

Investment in associates and joint ventures  

Trade and other receivables 

Derivative financial instruments 

Available-for-sale investments 

Deferred tax assets 

Current assets 

Inventories 

Trade and other receivables 

Current tax assets 

Derivative financial instruments 

Liquid investments 

Cash and cash equivalents 

Assets of disposal group classified as held for sale 

Total assets 

Current liabilities 

Short-term borrowings 

Derivative financial instruments 

Trade and other payables 

Current tax liabilities 

Non-current liabilities 

Medium and long-term borrowings 

Derivative financial instruments 

Trade and other payables 

Liabilities in relation to joint venture 

Post-employment benefit obligations 

Decommissioning & restoration provisions 

Deferred tax liabilities 

Liabilities of disposal group classified as held for sale 

Total liabilities 

Net assets 

Equity 

Share capital 

Share premium 

Other reserves 

Retained earnings 

Equity attributable to equity owners of the parent 

Non-controlling interests 

Total equity 

Note 

2017 
$m 

2016 
$m 

14 

15 

19 

17 

20 

24 

18 

27 

19 

20 

24 

21 

21 

22 

24 

23 

22 

24 

23 

17 

26 

28 

27 

29 

29 

29 

30 

150.1 

9,064.3 

3.5 

111.1 

150.1 

8,737.5 

2.6 

157.3 

1,069.7 

1,086.6 

67.0 

0.2 

6.5 

69.1 

66.7 

0.2 

4.6 

82.8 

10,541.5 

10,288.4 

483.6 

739.2 

155.2 

0.1 

1,168.7 

1,083.6 

3,630.4 

37.8 

393.4 

735.5 

255.2 

2.2 

1,332.2 

716.3 

3,434.8 

– 

14,209.7 

13,723.2 

(753.6)

(7.1)

(609.0)

(192.4)

(836.8)

(2.0)

(595.2)

(119.4)

(1,562.1)

(1,553.4)

(1,955.1)

(2,283.4)

– 

(7.4)

(2.0)

(114.0)

(433.0)

(994.1)

(0.5)

(7.9)

(3.1)

(92.2)

(392.1)

(880.9)

(3,505.6)

(3,660.1)

(0.4)

(5,068.1)

9,141.6 

89.8 

199.2 

(12.5)

7,041.9 

7,318.4 

1,823.2 

9,141.6 

– 

(5,213.5)

8,509.7 

89.8 

199.2 

(22.3)

6,548.6 

6,815.3 

1,694.4 

8,509.7 

The financial statements on pages 133 to 185 were approved by the Board of Directors on 12 March 2018 and signed on its behalf by 

Jean-Paul Luksic 
Chairman   

Ollie Oliveira 
Senior Independent Director

antofagasta.co.uk 

135 
135

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes 

31 

17 

17 

17 

11 

21 

13 

13 

30 

31 

31 

31 

31 

31 

2017 
$m 

2,495.0 

(59.1) 

(338.4) 

2,097.5 

(45.4) 

– 

81.8 

3.1 

(2.3) 

(2.2) 

6.9 

(899.0) 

163.5 

14.3 

2016 
$m 

1,457.3 

(46.3)

(272.6)

1,138.4 

(10.1)

20.0 

10.2 

10.0 

(7.0)

– 

0.5 

(795.1)

(408.1)

14.4 

(679.3) 

(1,165.2)

(252.3) 

(0.1) 

(320.0) 

272.0 

(725.5) 

(33.5) 

(1,059.4) 

358.8 

716.3 

358.8 

8.5 

(30.6)

(0.1)

(260.0)

938.8 

(693.1)

(31.3)

(76.3)

(103.1)

807.5 

(103.1)

11.9 

716.3 

21,31 

1,083.6 

FINANCIAL STATEMENTS CONTINUED 

CONSOLIDATED CASH FLOW STATEMENT 
For the year ended 31 December 2017 

Cash flow from operations 

Interest paid 

Income tax paid 

Net cash from operating activities 

Investing activities 

Capital contribution and loan to associates and joint ventures 

Acquisition of joint ventures 

Dividends from associates 

Disposal of subsidiary and joint ventures 

Acquisition of mining properties 

Cash reclassified as part of disposal group 

Proceeds from sale of property, plant and equipment 

Purchases of property, plant and equipment 

Net decrease/(increase) in liquid investments 

Interest received 

Net cash used in investing activities  

Financing activities 

Dividends paid to equity holders of the Company  

Dividends paid to preference shareholders of the Company 

Dividends paid to non-controlling interests 

Proceeds from issue of new borrowings 

Repayments of borrowings 

Repayments of obligations under finance leases 

Net cash used in financing activities 

Net increase/(decrease) in cash and cash equivalents 

Cash and cash equivalents at beginning of the year 

Net increase/(decrease) in cash and cash equivalents 

Effect of foreign exchange rate changes 

Cash and cash equivalents at end of the year 

136 
136

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NOTES TO THE FINANCIAL STATEMENTS 

1  BASIS OF PREPARATION 
The financial statements have been prepared in accordance with International 
Financial Reporting Standards (“IFRS”) and with those parts of the Companies 
Act 2006 applicable to companies reporting under IFRS. For these purposes, 
IFRS comprise the standards issued by the International Accounting Standards 
Board (“IASB”) and IFRS Interpretations Committee (“IFRS IC”) that have been 
endorsed by the European Union (“EU”). 

The financial statements have been prepared on the going concern basis.  
Details of the factors which have been taken into account in assessing the 
Group’s going concern status are set out within the Risk Management 
Framework section of the Strategic Report. 

Antofagasta plc is a company limited by shares, incorporated and domiciled  
in the United Kingdom at Cleveland House, 33 King Street, London SW1Y 6RJ. 

The immediate parent of the Group is Metalinvest Establishment, which is 
controlled by E. Abaroa Foundation, in which members of the Luksic family  
are interested. 

The nature of the Group entities’ operations is mainly related to mining and 
exploration activities and rail and road cargo.  

Significant events during 2017 
The Group completed the disposal of its 40% interest in Alto Maipo in  
March 2017 for nil consideration. An impairment provision was recognised  
in respect of the carrying value of the Group’s investment in Alto Maipo in 
the 2016 year-end results, and no gain or loss resulted from the completion 
of the disposal in the current period. 

Antucoya satisfied the terms of the completion test relating to its project 
financing in December 2017, resulting in the release of the parent 
guarantees provided by Antofagasta plc and Marubeni Corporation. 

A)  Adoption of new accounting standards 
The following accounting standards, amendments and interpretations 
became effective in the current reporting period: 

–  Recognition of Deferred Tax Assets for Unrealised Losses (Amendments 

to IAS 12) 

–  Disclosure Initiative (Amendments to IAS 7) 

The application of these standards and interpretations effective for the  
first time in the current year has had no significant impact on the amounts 
reported in these financial statements.  

B)  Accounting standards issued but not yet effective  
At the date of authorisation of these financial statements, the following 
standards and interpretations which have not been applied in these  
financial statements were in issue but not yet effective: 

–  IFRS 9, Financial Instruments 
–  IFRS 15, Revenue from Contracts with Customers 
–  IFRS 16, Leases 
–  IFRS 17, Insurance Contracts 
–  IFRS 22, Foreign Currency Transactions and Advance Consideration 
–  IFRIC 23, Uncertainty over Income Tax Treatments 
–  Sale or Contribution of Assets between an Investor and its Associate  

or Joint Venture (Amendments to IFRS 10 and IAS 28) 

–  Classification and Measurement of Share-based Payment Transactions 

(Amendments to IFRS 2) 

–  Applying IFRS 9 ‘Financial Instruments’ with IFRS 4 ‘Insurance Contracts’ 

(Amendments to IFRS 4) 

–  Prepayment Features with Negative Compensation (Amendments to IFRS 9) 
–  Long-term Interests in Associates and Joint Ventures (Amendments to IAS 28) 
–  Annual Improvements to three IFRS Standards 2015–2017 Cycle 

The Group is continuing to evaluate in detail the potential impact of these 
new interpretations, excluding IFRS 15, IFRS 9, IFRS 16. 

IFRS 15 Revenue from Contracts with Customers.  

Adoption of this standard is mandatory in 2018. The standard has been 
endorsed by the EU. 

The core principle of IFRS 15 is that an entity recognises 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. The standard introduces a five-step process for 
applying this principle, which includes guidance in respect of identifying the 
performance obligations under the contract with the customer, allocating  
the transaction price between the performance obligations, and recognising 
revenue as the entity satisfies the performance obligations.  

The Group has concluded its evaluation of the impact of IFRS 15, and 
determined that the only relevant impact for the Group relates to the shipping  
of material sold to customers. The Group sells a significant proportion of its 
products on Cost, Insurance & Freight (CIF) Incoterms, which means that the 
Group is responsible for shipping the product to a destination port specified by 
the customer. Under IAS 18 Revenue the Group recognised the total contract 
revenue when the material had been loaded at the port of loading, at which  
point the legal title and risks and rewards relating to the material passed to  
the customer, as well as accruing the related shipping costs at that point.  
Under IFRS 15 the shipping service will represent a separate performance 
obligation, and should be recognised separately from the sale of the material 
when the shipping service has been provided, along with the associated costs. 
The impact of this change in the 2017 comparatives to be included within the 
2018 financial statements will be to increase both 2017 revenues and expenses 
by approximately $5 million (less than 0.2% of revenue and expenses), with no 
significant impact on net earnings or net assets. 

The Group’s copper and molybdenum sale contracts generally provide for 
provisional pricing of sales at the time of shipment, with final pricing based  
on the monthly average London Metal Exchange (“LME”) copper price or the 
monthly average market molybdenum price for specified future periods. As 
explained in more detail below provisional pricing adjustments to revenue will  
be dealt with under IFRS 9 rather than IFRS 15, and therefore the IFRS 15 rules 
on variable consideration do not apply to the provisional pricing mechanism of 
the Group’s sales contracts.  

The standard will be applied in 2018 with retrospective restatement of the prior 
year comparatives. 

IFRS 9 Financial Instruments. 

Adoption of this standard is mandatory in 2018. The standard has been 
endorsed by the EU. 

The Group has concluded its evaluation of the impact of IFRS 9 and  
determined that the principal impact of the standard on the Group relates  
to its commodity price hedging. Under IAS 39 Financial instruments – 
recognition and measurement the time value element of changes in the fair 
value of derivative options is excluded from the designated hedging relationship, 
and is recognised directly in the income statement within other finance items. 
Under IFRS 9 we expect to recognise the time value element within other 
comprehensive income rather than the income statement, therefore reducing 
income statement volatility. During 2017 an expense of $7.8 million was 
recognised within other finance items in the income statement in respect  
of the time value element of derivative options. 

IFRS 9 introduces an expected credit loss model for impairment of financial 
assets which replaces the incurred loss model used in IAS 39. This is not 
expected to have a significant impact on the Group given our credit risk 
management processes, and the resulting very low level of credit losses. 

As explained above, the Group’s copper and molybdenum sale contracts 
generally provide for provisional pricing of sales at the time of shipment, with 
final pricing based on the monthly average London Metal Exchange (“LME”) 
copper price or the monthly average market molybdenum price for specified 
future periods. Under IAS 39 the final pricing adjustment mechanism represents 
an embedded derivative which is separated from the host contract (the copper 
or molybdenum sales contract) and recognised at fair value through profit  
or loss. Under IFRS 9 the receivable asset is measured at fair value through 
profit or loss which will result in a similar overall impact on the income 
statement and balance sheet.

antofagasta.co.uk 

137 
137

antofagasta.co.ukFINANCIAL STATEMENTS 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

1  BASIS OF PREPARATION CONTINUED 
IFRS 16 Leases.  

Adoption of this standard is mandatory in 2019. The standard has been 
endorsed by the EU. 

The Group’s work on the implementation of the new standard to date has 
included an analysis of the main impacts of the standard on the Group, an 
estimation of the likely overall impact on the Group’s results and balance 
sheet, including the impact on the Group’s key financial ratios, and 
commencing a detailed contract review process. The detailed contract 
review process and relevant staff training will complete during 2018.  

The standard will result in most of the Group’s existing operating leases 
being accounted for similar to finance leases under the current IAS 17 
Leases standard, resulting in the recognition of additional assets within 
property, plant and equipment in respect of the right of use of the lease 
assets, and additional lease liabilities. The operating lease charges currently 
reflected within operating expenses (and EBITDA) will be eliminated, and 
instead depreciation and finance charges will be recognised in respect of  
the lease assets and liabilities. Based on the operating leases in place at  
31 December 2017 it is currently estimated that this would result in the 
recognition of additional lease assets within property, plant & equipment and 
additional lease liabilities as at 1 January 2018 of approximately $150 million 
in each case. It is also estimated that this would result in a decrease in 
annual operating expenses before depreciation (and therefore an increase  
in EBITDA) of approximately $90 million, an increase in annual depreciation 
of approximately $80 million, an increase in finance costs of less than  
$15 million, and a net impact on profit before tax of less than $10 million.  
The cash flow from operations figure per the cash flow statement will 
increase, as currently all cash payments relating to operating leases are 
included within this line, but under IFRS 16 the payments will be classified 
either as interest payments or repayment of borrowings. 

The standard will be applied in 2019, and the current expectation is that it 
will be applied with retrospective restatement of the prior year comparatives. 

PRINCIPAL ACCOUNTING POLICIES 

2 
A)  Accounting convention 
These financial statements have been prepared under the historical cost 
convention as modified by the use of fair values to measure certain financial 
instruments, principally provisionally priced sales as explained in Note 2(F) 
and financial derivative contracts as explained in Note 2(X). 

B)  Basis of consolidation 
The financial statements comprise the consolidated financial statements  
of Antofagasta plc (“the Company”) and its subsidiaries (collectively  
“the Group”). 

Subsidiaries – A subsidiary is an entity over which the Group has control, 
which is the case when the Group is exposed to, or has rights to, variable 
returns from its involvement with the entity and has the ability to affect those 
returns through its power over the entity. The consolidated financial 
statements include all the assets, liabilities, revenues, expenses and cash 
flows of the Company and its subsidiaries after eliminating inter-company 
balances and transactions. For partly-owned subsidiaries, the net assets and 
profit attributable to non-controlling shareholders are presented as “Non-
controlling interests” in the consolidated balance sheet and consolidated 
income statement. 

Non-controlling interests that are present ownership interests and entitle  
their holders to a proportionate share of the entity’s net assets in the event  
of liquidation may be initially measured either at fair value or at the non-
controlling interests’ proportionate share of the recognised amounts of  
the acquiree’s identifiable net assets. The choice of measurement basis is 
made on an acquisition-by-acquisition basis. Other types of non-controlling 
interests are measured at fair value or, when applicable, on the basis 
specified in another IFRS. Subsequent to acquisition, the carrying amount of 
non-controlling interests is the amount of those interests at initial recognition  
plus the non-controlling interests’ share of subsequent changes in equity. 

138 
138

Antofagasta Annual Report 2017 

Total comprehensive income is attributed to non-controlling interests even  
if this results in the non-controlling interests having a deficit balance. 

Changes in the Group’s ownership interests in subsidiaries that do not  
result in the Group losing control over the subsidiaries are accounted for  
as equity transactions. The carrying amounts of the Group’s interests and 
the non-controlling interests are adjusted to reflect the changes in their 
relative interests in the subsidiaries. Any difference between the amount  
by which the non-controlling interests are adjusted and the fair value of  
the consideration paid or received is recognised directly in equity and 
attributed to owners of the Company. 

When the Group loses control of a subsidiary, a gain or loss is recognised  
in profit or loss and is calculated as the difference between (i) the aggregate 
of the fair value of the consideration received and the fair value of any 
retained interest and (ii) the previous carrying amount of the assets 
(including goodwill), and liabilities of the subsidiary and any non-controlling 
interests. When assets of the subsidiary are carried at revalued amounts  
or fair values and the related cumulative gain or loss has been recognised  
in other comprehensive income and accumulated in equity, the amounts 
previously recognised in other comprehensive income and accumulated  
in equity are accounted for as if the Group had directly disposed of the 
relevant assets (i.e. reclassified to profit or loss or transferred directly to 
retained earnings as specified by applicable IFRSs). The fair value of any 
investment retained in the former subsidiary at the date when control is  
lost is regarded as the fair value on initial recognition for subsequent 
accounting under IAS 39 Financial Instruments: Recognition and 
Measurement or, when applicable, the cost on initial recognition  
of an investment in an associate or a joint venture. 

Acquisitions and disposals are treated as explained in Note 2(G) relating  
to business combinations and goodwill. 

Investments in associates 

C) 
An associate is an entity over which the Group is in a position to exercise 
significant influence, but not control or joint control, through the power to 
participate in the financial and operating policy decisions of that entity. The 
results and assets and liabilities of associates are incorporated in these 
consolidated financial statements using the equity method of accounting.  
This requires recording the investment initially at cost to the Group and then, 
in subsequent periods, adjusting the carrying amount of the investment to 
reflect the Group’s share of the associate’s results less any impairment and 
any other changes to the associate’s net assets such as dividends. When  
the Group loses control of a former subsidiary but retains an investment in 
associate in that entity the initial carrying value of the investment in associate 
is recorded at its fair value at that point. When the Group’s share of losses  
of an associate exceeds the Group’s interest in that associate the Group 
discontinues recognising its share of further losses. Additional losses  
are recognised only to the extent that the Group has incurred legal or  
constructive obligations or made payments on behalf of the associate. 

D)  Joint arrangements 
A joint arrangement is an arrangement of which two or more parties have 
joint control. Joint arrangements are accounted depending on the nature  
of the arrangement. 

i)  Joint ventures – are accounted for using the equity method in 

accordance with IAS 28 Investment in Associates and Joint Ventures  
as described in Note 2I. 

ii)  Joint operations – are accounted for recognising directly the assets, 
obligations, revenues and expenses of the joint operator in the joint 
arrangement. The assets, liabilities, revenues and expenses are  
accounted for in accordance with the relevant IFRS.  

When a Group entity transacts with its joint arrangements, profits and losses 
resulting from the transactions with the joint arrangements are recognised 
in the Group’s consolidated financial statements only to the extent of 
interests in the joint arrangements that are not related to the Group. 

Antofagasta plc Annual Report 2017 
 
E)  Currency translation 
The functional currency for each entity in the Group is determined as  
the currency of the primary economic environment in which it operates. 
Transactions in currencies other than the functional currency of the entity  
are translated at the exchange rate ruling at the date of the transaction. 
Monetary assets and liabilities denominated in currencies other than the 
functional currency are retranslated at year end exchange rates. Gains  
and losses on retranslation are included in net profit or loss for the period 
within other finance items. 

The presentational currency of the Group and the functional currency of  
the Company is the US dollar. On consolidation, income statement items  
for entities with a functional currency other than the US dollar are translated 
into US dollars at average rates of exchange. Balance sheet items are 
translated at period-end exchange rates. Exchange differences on translation 
of the net assets of such entities are taken to equity and recorded in a 
separate currency translation reserve. Cumulative translation differences 
arising after the transition date to IFRS are recognised as income or as 
expenses in the income statement in the period in which an operation is 
disposed of. 

On consolidation, exchange gains and losses which arise on balances between 
Group entities are taken to reserves where that balance is, in substance, part 
of the net investment in a foreign operation, i.e. where settlement is neither 
planned nor likely to occur in the foreseeable future. All other exchange 
gains and losses on Group balances are dealt with in the income statement. 

Fair value adjustments and any goodwill arising on the acquisition of  
a foreign entity are treated as assets of the foreign entity and translated  
at the period-end rate. 

F)  Revenue recognition 
Revenue represents the value of goods and services supplied to third parties 
during the year. Revenue is measured at the fair value of consideration 
received or receivable, and excludes any applicable sales tax. 

A sale is recognised when the significant risks and rewards of ownership 
have passed. This is generally when title and any insurance risk has passed  
to the customer, and the goods have been delivered to a contractually 
agreed location or when any services have been provided. 

Revenue from mining activities is recorded at the invoiced amounts with an 
adjustment for provisional pricing at each reporting date, as explained below. 
For copper and molybdenum concentrates, which are sold to smelters and 
roasting plants for further processing, the invoiced amount is the market  
value of the metal payable by the customer, net of deductions for tolling 
charges. Revenue includes amounts from the sale of by-products. 

Copper and molybdenum concentrate sale agreements and copper cathode 
sale agreements generally provide for provisional pricing of sales at the time 
of shipment, with final pricing based on the monthly average London Metal 
Exchange (“LME”) copper price or the monthly average market molybdenum 
price for specified future periods. This normally ranges from one to four 
months after delivery to the customer. Such a provisional sale contains  
an embedded derivative which is required to be separated from the host 
contract. The host contract is the sale of metals contained in the concentrate 
or cathode at the provisional invoice price less tolling charges deducted, and 
the embedded derivative is the forward contract for which the provisional 
sale is subsequently adjusted. At each reporting date, the provisionally priced 
metal sales together with any related tolling charges are marked-to-market, 
with adjustments (both gains and losses) being recorded in revenue in the 
consolidated income statement and in trade debtors in the balance sheet. 
Forward prices at the period end are used for copper concentrate and 
cathode sales, while period-end average prices are used for molybdenum 
concentrate sales due to the absence of a futures market. 

Interest income is accrued on a time basis, by reference to the principal 
outstanding and the effective interest rate applicable, which is the rate that 
exactly discounts estimated future cash receipts through the expected life  
of the financial asset to that asset’s net carrying amount. 

Dividend income from available-for-sale investments, associates and joint 
ventures is recognised when the shareholders’ right to receive payment  
has been established. For associates and joint ventures, it is recorded  
as a decrease of the investment. 

G)  Business combinations and goodwill 
Acquisitions of businesses are accounted for using the acquisition method. 
The consideration transferred in a business combination is measured at fair 
value, which is calculated as the sum of the acquisition-date fair values of  
the assets transferred by the Group, liabilities incurred by the Group to the 
former owners of the acquiree and the equity interests issued by the Group  
in exchange for control of the acquiree. The results of businesses acquired 
during the year are brought into the consolidated financial statements from 
the effective date of acquisition. The identifiable assets, liabilities and 
contingent liabilities of a business which can be measured reliably  
are recorded at their provisional fair values at the date of acquisition. 
Provisional fair values are finalised within 12 months of the acquisition  
date. Acquisition-related costs are expensed as incurred. 

When the consideration transferred by the Group in a business combination 
includes assets or liabilities resulting from a contingent consideration 
arrangement, the contingent consideration is measured at its acquisition-
date fair value and included as part of the consideration transferred  
in a business combination. Changes in the fair value of the contingent 
consideration that qualify as measurement period adjustments are  
adjusted retrospectively, with corresponding adjustments against goodwill. 
Measurement period adjustments are adjustments that arise from additional 
information obtained during the “measurement period” (which cannot 
exceed one year from the acquisition date) about facts and circumstances 
that existed at the acquisition date. 

The subsequent accounting for changes in the fair value of the contingent 
consideration that do not qualify as “measurement period” adjustments 
depends on how the contingent consideration is classified. Contingent 
consideration that is classified as equity is not remeasured at subsequent 
reporting dates and its subsequent settlement is accounted for within equity. 
Contingent consideration that is classified as an asset or a liability is 
remeasured at subsequent reporting dates in accordance with IAS 39. 

When a business combination is achieved in stages, the Group’s previously 
held equity interest in the acquiree is remeasured to fair value at the 
acquisition date (i.e. the date when the Group obtains control) and the 
resulting gain or loss, if any, is recognised in profit or loss. Amounts  
arising from interests in the acquiree prior to the acquisition date that  
have previously been recognised in other comprehensive income are 
reclassified to profit or loss where such treatment would be appropriate  
if that interest were disposed of. 

If the initial accounting for a business combination is incomplete by the end  
of the reporting period in which the combination occurs, the Group reports 
provisional amounts for the items for which the accounting is incomplete. 
Those provisional amounts are adjusted during the measurement period  
(see above), or additional assets or liabilities are recognised, to reflect new 
information obtained about facts and circumstances which existed at the 
acquisition date that, if known, would have affected the amounts recognised  
at that date. 

Goodwill arising in a business combination is measured as the excess of  
the sum of the consideration transferred, the amount of any non-controlling 
interest in the acquiree and the fair value of the acquirer’s previously held 
equity interest in the acquiree (if any) over the net identifiable assets 
acquired and liabilities assumed. Any goodwill on the acquisition of 
subsidiaries is separately disclosed, while any goodwill on the acquisition 
of associates and joint ventures is included within investments in equity 
accounted entities. Internally generated goodwill is not recognised. Where 
the fair values of the identifiable net assets acquired exceed the sum of the 
consideration transferred, the surplus is credited to the profit or loss in the 
period of acquisition as a bargain purchase gain. 

antofagasta.co.uk 

139 
139

antofagasta.co.ukFINANCIAL STATEMENTS 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

Intangible assets 

J) 
Intangible assets with finite useful lives that are acquired separately are 
carried at cost less accumulated amortisation and accumulated impairment 
losses. Exploration and mining licences are classified as intangible assets 
when construction of the related mining operation has not yet commenced. 
When construction commences the licences are transferred from intangible 
assets to the mining properties category within property, plant & equipment. 
Amortisation is recognised on a straight-line basis over the estimated useful 
lives of the intangible assets. The estimated useful life and amortisation 
method are reviewed at the end of each reporting period, with the effect  
of any changes in estimate being accounted for on a prospective basis. 
Intangible assets with indefinite useful lives that are acquired separately  
are carried at cost less accumulated impairment losses. 

Intangible assets acquired in a business combination and recognised 
separately from goodwill are initially recognised at their fair value at  
the acquisition date (which is regarded as their cost). 

Subsequent to initial recognition, intangible assets acquired in a business 
combination are reported at cost less accumulated amortisation and 
accumulated impairment losses, on the same basis as intangible assets  
that are acquired separately. 

An intangible asset is derecognised on disposal, or when no future economic 
benefits are expected from use or disposal. Gains or losses arising from 
derecognition of an intangible asset, measured as the difference between  
the net disposal proceeds and the carrying amount of the asset, are 
recognised in profit or loss when the asset is derecognised. 

K)  Property, plant and equipment 
The costs of mining properties and leases, which include the costs of 
acquiring and developing mining properties and mineral rights, are 
capitalised as property, plant and equipment in the year in which they are 
incurred, when a mining project is considered to be commercially viable 
(normally when the project has completed a pre-feasibility study, and the 
start of a feasibility study has been approved). The cost of property, plant 
and equipment comprises the purchase price and any costs directly 
attributable to bringing the asset to the location and condition necessary  
for it to be capable of operating in the manner intended. Once a project has 
been established as commercially viable, related development expenditure  
is capitalised. This includes costs incurred in preparing the site for mining 
operations, including pre-stripping costs. Capitalisation ceases when the 
mine is capable of commercial production, with the exception of 
development costs which give rise to a future benefit. 

Interest on borrowings related to construction or development of projects  
is capitalised, until such time as the assets are substantially ready for their 
intended use or sale which, in the case of mining properties, is when they  
are capable of commercial production. 

PRINCIPAL ACCOUNTING POLICIES CONTINUED 

2 
The Group often enters into earn-in arrangements whereby the Group 
acquires an interest in a project company in exchange for funding  
exploration and evaluation expenditure up to a specified level of expenditure  
or a specified stage in the life of the project. Funding is usually conditional  
on the achievement of key milestones by the partner. Typically there is no 
consideration transferred or funding liability on the effective date of 
acquisition of the interest in the project company and no goodwill is 
recognised on this type of transaction. 

The results of businesses sold during the year are included in the 
consolidated financial statements for the period up to the effective date  
of disposal. Gains or losses on disposal are calculated as the difference 
between the sales´ proceeds (net of expenses) and the net assets 
attributable to the interest which has been sold. Where a disposal represents 
a separate major line of business or geographical area of operations, the net 
results attributable to the disposed entity are shown separately in the income 
statement as a discontinued operation. 

H)  Exploration and evaluation expenditure 
Exploration and evaluation costs, other than those incurred in acquiring 
exploration licences, are expensed in the year in which they are incurred. 
When a mining project is considered to be commercially viable (normally 
when the project has completed a pre-feasibility study, and the start  
of a feasibility study has been approved) all further directly attributable  
pre-production expenditure is capitalised. Capitalisation of pre-production 
expenditure ceases when commercial levels of production are achieved.  

Costs incurred in acquiring exploration and mining licences are classified  
for as intangible assets when construction of the related mining operation 
has not yet commenced. When construction commences the licences are 
transferred from intangible assets to the mining properties category within 
property, plant & equipment. 

I)  Stripping costs 
Pre-stripping and operating stripping costs are incurred in the course of the 
development and operation of open-pit mining operations. 

Pre-stripping costs relate to the removal of waste material as part of the  
initial development of an open-pit, in order to allow access to the ore body. 
These costs are capitalised within mining properties within property, plant  
and equipment. The capitalised costs are depreciated once production 
commences on a unit of production basis, in proportion to the volume of  
ore extracted in the year compared with total proven and probable reserves 
for that pit at the beginning of the year.  

Operating stripping costs relate to the costs of extracting waste material  
as part of the ongoing mining process. The ongoing mining and development 
of the Group’s open-pit mines is generally performed via a succession of 
individual phases. The costs of extracting material from an open-pit mine  
are generally allocated between ore and waste stripping in proportion to  
the tonnes of material extracted. The waste stripping costs are generally 
absorbed into inventory and expensed as that inventory is processed and 
sold. Where the stripping costs relate to a significant stripping campaign 
which is expected to provide improved access to an identifiable component 
of the ore body (typically an individual phase within the overall mine plan), 
the costs of removing waste in order to improve access to that part of the 
ore body will be capitalised within mining properties within property, plant 
and equipment. The capitalised costs will then be amortised on a unit of 
production basis, in proportion to the volume of ore extracted compared  
with the total ore contained in the component of the pit to which the stripping 
campaign relates. 

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Antofagasta plc Annual Report 2017 
 
L)  Depreciation of property, plant and equipment  
Depreciation of an asset begins when it is available for use, i.e. when it is in 
the location and condition necessary for it to be capable of operating in the 
manner intended. 

Property, plant and equipment is depreciated over its useful life, or over  
the remaining life of the operation if shorter, to residual value. The major 
categories of property, plant and equipment are depreciated as follows: 

(i) 

Land – freehold land is not depreciated unless the value of the land is 
considered to relate directly to a particular mining operation, in which 
case the land is depreciated on a straight-line basis over the expected 
mine life. 

(ii)  Mining properties – mining properties, including capitalised financing 

costs, are depreciated on a unit of production basis, in proportion to  
the volume of ore extracted in the year compared with total proven  
and probable reserves at the beginning of the year. 

(iii)  Buildings and infrastructure – straight-line basis over 10 to 25 years. 

(iv)  Railway track (including trackside equipment) – straight-line basis 

over 20 to 25 years. 

(v)  Wagons and rolling stock – straight-line basis over 10 to 20 years. 

(vi)  Machinery, equipment and other assets – are depreciated on a  
unit of production basis, in proportion to the volume of ore/material 
processed or on a straight-line basis over 5 to 20 years. 

but so that the increased carrying amount does not exceed the carrying 
value that would have been determined if no impairment had previously been 
recognised. A reversal is recognised in the income statement immediately. 

Inventory 

N) 
Inventory consists of raw materials and consumables, work-in-progress and 
finished goods. Work-in-progress represents material that is in the process  
of being converted into finished goods. The conversion process for mining 
operations depends on the nature of the copper ore. For sulphide ores, 
processing includes milling and concentrating and results in the production  
of copper concentrate. For oxide ores, processing includes leaching of 
stockpiles, solvent extraction and electrowinning and results in the 
production of copper cathodes. Finished goods consist of copper 
concentrate containing gold and silver at Los Pelambres and Centinela  
and copper cathodes at Centinela and Antucoya. Los Pelambres also 
produces molybdenum as a by-product. 

Inventory is valued at the lower of cost, on a weighted average basis, and 
net realisable value. Net realisable value represents estimated selling price 
less all estimated costs of completion and costs to be incurred in marketing, 
selling and distribution. Cost of finished goods and work-in-progress is 
production cost and for raw materials and consumables it is purchase  
price. Production cost includes: 

–  labour costs, raw material costs and other costs directly attributable  

to the extraction and processing of ore; 

–  depreciation of plant, equipment and mining properties directly involved  

(vii)  Assets under construction – no depreciation until asset is available  

in the production process; and 

for use. 

(viii)  Assets held under finance lease – are depreciated over the shorter 

of the lease term and their useful life. 

Residual values and useful lives are reviewed, and adjusted if appropriate,  
at least annually, and changes to residual values and useful lives are 
accounted for prospectively. 

M)  Impairment of property, plant and equipment and intangible 

assets (excluding goodwill) 

Property, plant and equipment and finite life intangible assets are reviewed  
for impairment if there is any indication that the carrying amount may not  
be recoverable. If any such indication exists, the recoverable amount of the 
asset is estimated in order to determine the extent of the impairment (if any). 
Where the asset does not generate cash flows that are independent from 
other assets, the Group estimates the recoverable amount of the cash-
generating unit to which the asset belongs. Any intangible asset with an 
indefinite useful life is tested for impairment annually and whenever there  
is an indication that the asset may be impaired.  

Recoverable amount is the higher of fair value less costs of disposal and 
value in use. Fair value less costs of disposal reflects the net amount the 
Group would receive from the sale of the asset in an orderly transaction 
between market participants. For mining assets this would generally be 
determined based on the present value of the estimated future cash flows 
arising from the continued use, further development or eventual disposal  
of the asset. The estimates used in determining the present value of those 
cash flows are those that an independent market participant would consider 
appropriate. Value in use reflects the expected present value of the future 
cash flows which the Group would generate through the operation of  
the asset in its current condition, without taking into account potential 
enhancements or further development of the asset. The fair value less  
costs of disposal valuation will normally be higher than the value in use 
valuation, and accordingly the Group typically applies this valuation  
estimate in its impairment assessments. 

If the recoverable amount of an asset or cash-generating unit is estimated  
to be less than its carrying amount, the carrying amount is reduced to the 
recoverable amount. An impairment charge is recognised in the income 
statement immediately. Where an impairment subsequently reverses, the 
carrying amount is increased to the revised estimate of recoverable amount, 

–  an appropriate portion of production overheads. 

Stockpiles represent ore that is extracted and is available for further 
processing. Costs directly attributable to the extraction of ore are generally 
allocated as part of production costs in proportion to the tonnes of material 
extracted. Operating stripping costs are generally absorbed into inventory,  
and therefore expensed as that inventory is processed and sold. If ore is  
not expected to be processed within 12 months of the statement of financial 
position date it is included within non-current assets. If there is significant 
uncertainty as to when any stockpiled ore will be processed it is expensed  
as incurred. 

O)  Taxation 
Tax expense comprises the charges or credits for the year relating to both 
current and deferred tax. 

Current tax is based on taxable profit for the year. Taxable profit may differ 
from net profit as reported in the income statement because it excludes 
items of income or expense that are taxable and deductible in different years 
and also excludes items that are not taxable or deductible. The liability for 
current tax is calculated using tax rates for each entity in the consolidated 
financial statements which have been enacted or substantively enacted at 
the balance sheet date. 

Deferred tax is the tax expected to be payable or recoverable on temporary 
differences (i.e. differences between the carrying amount of assets and 
liabilities in the financial statements and the corresponding tax basis used  
in the computation of taxable profit). Deferred tax is accounted for using  
the balance sheet liability method and is provided on all temporary 
differences with certain limited exceptions as follows: 

(i)  

tax payable on undistributed earnings of subsidiaries, associates and 
joint ventures is provided except where the Group is able to control the 
remittance of profits and it is probable that there will be no remittance  
of past profits earned in the foreseeable future; 

(ii)  deferred tax is not provided on the initial recognition of an asset or 

liability in a transaction that does not affect accounting profit or taxable 
profit and is not a business combination; nor is deferred tax provided 
on subsequent changes in the carrying value of such assets and 
liabilities, for example where they are depreciated; and 

(iii) 

the initial recognition of any goodwill. 

antofagasta.co.uk 

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antofagasta.co.ukFINANCIAL STATEMENTS 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

PRINCIPAL ACCOUNTING POLICIES CONTINUED 

2 
Deferred tax assets are recognised only to the extent that it is probable that 
they will be recovered through sufficient future taxable profit. The carrying 
amount of deferred tax assets is reviewed at each balance sheet date. 

Deferred tax is calculated at the tax rates that are expected to apply in the 
period when the liability is settled or the asset is realised. Deferred tax is 
charged or credited in the income statement, except when it relates to items 
charged or credited directly to equity, in which case the deferred tax is also 
taken directly to equity. 

P)  Provisions 
Provisions are recognised when the Group has a present obligation (legal or 
constructive) as a result of a past event, it is probable that the Group will be 
required to settle the obligation and a reliable estimate can be made of the 
amount of the obligation. 

The amount recognised as a provision is the best estimate of the 
consideration required to settle the present obligation at the end of the 
reporting period, taking into account the risks and uncertainties surrounding 
the obligation. When a provision is measured using the cash flows estimated 
to settle the present obligation, its carrying amount is the present value of 
those cash flows (when the effect of the time value of money is material). 

When some or all of the economic benefits required to settle a provision are 
expected to be recovered from a third party, a receivable is recognised as  
an asset if it is virtually certain that reimbursement will be received and the 
amount of the receivable can be measured reliably. 

Q)  Provisions for decommissioning and restoration costs 
An obligation to incur decommissioning and restoration costs occurs  
when environmental disturbance is caused by the development or ongoing 
production of a mining property. Costs are estimated on the basis of a formal 
closure plan and are subject to regular formal review. 

Such costs arising from the installation of plant and other site preparation 
work, discounted to their net present value, are provided and capitalised at  
the start of each project, as soon as the obligation to incur such costs arises. 
These decommissioning costs are charged against profits over the life of the 
mine, through depreciation of the asset and unwinding or amortisation of the 
discount on the provision. Depreciation is included in operating costs while  
the unwinding of the discount is included as financing costs. Changes in the 
measurement of a liability relating to the decommissioning of plant or other 
site preparation work are added to, or deducted from, the cost of the related 
asset in the current year. 

The costs for restoration of site damage, which is created on an ongoing  
basis during production, are provided for at their net present values and 
charged against operating profits as extraction progresses. Changes in the 
measurement of a liability relating to site damage created during production  
are charged against operating profit. 

R)  Share-based payments 
For cash-settled share-based payments, a liability is recognised for  
the goods or services acquired, measured initially at the fair value of the 
liability. At the end of each reporting period until the liability is settled, and  
at the date of settlement, the fair value of the liability is remeasured, with  
any changes in fair value recognised in profit or loss for the year. The  
Group currently does not have any equity settled share-based payments  
to employees or third parties. 

S)  Post-employment benefits 
The Group operates defined contribution schemes for a limited number of 
employees. For such schemes, the amount charged to the income statement 
is the contributions paid or payable in the year. 

Employment terms may also provide for payment of a severance indemnity 
when an employment contract comes to an end. This is typically at the rate  
of one month for each year of service (subject in most cases to a cap as to 
the number of qualifying years of service) and based on final salary level. 

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Antofagasta Annual Report 2017 

The severance indemnity obligation is treated as an unfunded defined benefit 
plan, and the calculation is based on valuations performed by an independent 
actuary using the projected unit credit method, which are regularly updated.  

The obligation recognised in the balance sheet represents the present  
value of the severance indemnity obligation. Actuarial gains and losses  
are immediately recognised in other comprehensive income. 

T)  Cash and cash equivalents 
Cash and cash equivalents comprise cash on hand, deposits held on call  
with banks, highly liquid investments that are readily convertible into known 
amounts of cash and which are subject to insignificant risk of changes in 
value, net of bank overdrafts which are repayable on demand. Cash and  
cash equivalents normally have a maturity period of 90 days or less. 

U)  Liquid investments 
Liquid investments represent highly liquid current asset investments such  
as term deposits and managed funds invested in high quality fixed income 
instruments. They do not meet the IAS 7 definition of cash and cash 
equivalents, normally because even if readily accessible, the underlying 
investments have an average maturity profile greater than 90 days from  
the date first entered into. These assets are designated as fair value through 
profit or loss.  

V)  Leases 
Rental costs under operating leases are charged to the income statement 
account in equal annual amounts over the term of the lease. 

Assets under finance leases are recognised as assets of the Group at 
inception of the lease at the lower of fair value or the present value of the 
minimum lease payments derived by discounting at the interest rate implicit  
in the lease. The interest element is charged within financing costs so as  
to produce a constant periodic rate of interest on the remaining balance  
of the liability. 

W)  Other financial instruments 
Financial assets and financial liabilities are recognised on the Group’s 
balance sheet when the Group becomes a party to the contractual provisions 
of the instrument. Financial assets are derecognised when the contractual 
rights to the cash flows from the financial asset expire or the Group has 
transferred the asset to another party. Financial liabilities are removed  
from the Group’s balance sheet when they are extinguished – i.e. when  
the obligation specified in the contract has been discharged, cancelled  
or expired. 

(i) 

Investments – Investments which are not subsidiaries, associates or 
joint ventures are initially measured at cost, including transaction costs. 

Investments are classified as either held for trading or available-for-
sale, and are normally measured at subsequent reporting dates at fair 
value. Fair value is determined in the manner described in Note 25(B). 
Investments in equity instruments that do not have a quoted market 
price in an active market and whose fair value cannot be reliably 
measured are measured at cost. Securities are classified as held-for-
trading when they are acquired principally for the purpose of sale in 
the short term, and gains and losses arising from changes in fair value 
are included in profit or loss for the period. Other investments are 
classified as available-for-sale, and gains and losses arising from 
changes in fair value are recognised directly in equity, within the  
Fair value reserve, until the security is disposed of or is determined to 
be impaired, at which time the cumulative gain or loss previously 
recognised in equity is included in profit or loss for the period. 
Dividends on available-for-sale and held-for-trading equity investments 
are recognised in the income statement when the right to receive 
payment is established. 

Antofagasta plc Annual Report 2017 
 
(vii)  Impairment of financial assets – Financial assets, other than those  
at fair value through profit or loss, are assessed for indicators of 
impairment at each balance sheet date. Financial assets are impaired 
where there is objective evidence that as a result of one or more 
events that occurred after the initial recognition of the financial asset 
the estimated future cash flows of the investment have been impacted. 
For loans and receivables the amount of the impairment is the 
difference between the asset’s carrying value and the present value of 
estimated future cash flows, discounted at the original effective interest 
rate. Any impairment loss is recognised in profit or loss immediately. 

The carrying amount of the financial asset is reduced by the  
impairment loss directly for all financial assets with the exception  
of trade receivables. 

With the exception of available-for-sale equity instruments, if, in a 
subsequent period, the amount of the impairment loss decreases  
and the decrease can be related objectively to an event occurring after 
the impairment was recognised, the previously recognised impairment 
loss is reversed through profit or loss immediately to the extent that  
the carrying amount of the investment at the date the impairment is 
reversed does not exceed what the amortised cost would have been  
had the impairment not been recognised. In respect of available-for-
sale equity instruments, any increase in fair value subsequent to an 
impairment loss is recognised directly in equity. 

X)  Exceptional items 
Exceptional items are material items of income and expense which are  
non-regular or non-operating and typically non-cash movements (Note 4). 
Profit excluding exceptional items is considered to be a useful performance 
measure as it provides an indication of the underlying earnings of the 
Group’s operations, excluding these one-off items. 

Y)  Rounding 
All amounts disclosed in the financial statements and notes have been 
rounded off to the nearest million dollars unless otherwise stated. 

These policies have been consistently applied to all the years presented, 
unless otherwise stated.  

3 

CRITICAL ACCOUNTING JUDGEMENTS AND KEY SOURCES  
OF ESTIMATION UNCERTAINTY 

Determining many of the amounts included in the financial statements 
involves the use of judgement and/or estimation. These judgements and 
estimates are based on management’s best knowledge of the relevant facts 
and circumstances having regard to prior experience, but actual results may 
differ from the amounts included in the financial statements. Information 
about such judgements and estimates is included in the principal accounting 
policies in Note 2 or the other notes to the financial statements, and the key 
areas are set out below. 

(ii)  Trade and other receivables – Trade and other receivables do not 
generally carry any interest and are normally stated at their nominal 
value less any impairment. Impairment losses on trade receivables  
are recognised within an allowance account unless the Group 
considers that no recovery of the amount is possible, in which  
case the carrying value of the asset is reduced directly. 

(iii)  Trade and other payables – Trade and other payables are generally  
not interest-bearing and are normally stated at their nominal value. 

(iv)  Borrowings (loans and preference shares) – Interest-bearing loans 
and bank overdrafts are initially recorded at the proceeds received, net 
of direct issue costs. They are subsequently measured at amortised 
cost using the effective interest method, with interest expense 
recognised on an effective yield basis. The effective interest method  
is a method of calculating the amortised cost of a financial liability and 
of allocating interest expense over the relevant period. The effective 
interest rate is the rate that exactly discounts estimated future cash 
payments through the expected life of the financial liability, or, where 
appropriate, a shorter period. Finance charges, including premiums 
payable on settlement or redemption and direct issue costs, are 
accounted for on an accruals basis using the effective interest rate 
method. Amounts are either recorded as financing costs in profit or 
loss or capitalised in accordance with the accounting policy set out  
in Note 2(K). Finance charges are added to the carrying amount of  
the instrument to the extent that they are not settled in the period 
in which they arise.  

The Sterling-denominated preference shares issued by the Company 
carry a fixed rate of return without the right to participate in any 
surplus. They are accordingly classified within borrowings and 
translated into US dollars at period-end rates of exchange.  
Preference share dividends are included within finance costs. 

(v)  Equity instruments – Equity instruments issued are recorded at  

the proceeds received, net of direct issue costs. Equity instruments  
of the Company comprise its Sterling-denominated issued ordinary 
share capital and related share premium. As explained in Note 2(E),  
the presentational currency of the Group and the functional currency  
of the Company is US dollars, and ordinary share capital and share 
premium are translated into US dollars at historical rates of exchange 
based on dates of issue. 

(vi)  Derivative financial instruments – As explained in Note 24(D), the 

Group uses derivative financial instruments to reduce exposure to 
foreign exchange, interest rate and commodity price movements. The 
Group does not use such derivative instruments for trading purposes. 
The Group has applied the hedge accounting provisions of IAS 39 
“Financial Instruments: Recognition and Measurement”. The effective 
portion of changes in the fair value of derivative financial instruments 
that are designated and qualify as hedges of future cash flows have 
been recognised directly in equity, with such amounts subsequently 
recognised in profit or loss in the period when the hedged item affects 
profit or loss. Any ineffective portion is recognised immediately in profit 
or loss. Realised gains and losses on commodity derivatives recognised 
in profit or loss are recorded within revenue. The time value element of 
changes in the fair value of derivative options is excluded from the 
designated hedging relationship, and is therefore recognised directly in 
profit or loss within other finance items. Derivatives embedded in other 
financial instruments or other host contracts are treated as separate 
derivatives when their risks and characteristics are not closely related  
to those of host contracts and the host contracts are not carried at fair 
value. Changes in fair value are reported in profit or loss for the year. 
The treatment of embedded derivatives arising from provisionally-
priced commodity sales contracts is set out in further detail in Note 
2(F) relating to revenue. 

antofagasta.co.uk 

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antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

3 

CRITICAL ACCOUNTING JUDGEMENTS AND KEY SOURCES OF 
ESTIMATION UNCERTAINTY CONTINUED 

A)  Judgements 
The following are the critical judgements, apart from those involving 
estimations (which are dealt with separately), that the directors have  
made in the process of applying the Group’s accounting policies and  
that have the most significant effect on the amounts recognised in the 
financial statements. 

(i) 

Capitalisation of property, plant and equipment of project costs 
As explained in Note 2(K) the costs of developing mining properties are 
capitalised as property, plant and equipment in the year in which they 
are incurred, when the mining project is considered to be commercially 
viable. Management reviews amounts capitalised to ensure that the 
treatment of that expenditure as capital rather than operating 
expenditure is reasonable, in particular in respect of the commercial 
viability of the project. Commercial viability is normally considered to  
be demonstrable when the project has completed a pre-feasibility 
study, and the start of a feasibility study has been approved. As at  
31 December 2017 $211.4 million of feasibility study costs relating to 
projects which are still under evaluation and have not yet received final 
Board approval were capitalised within property, plant and equipment. 

(ii)  Deferred taxation 

As explained in Note 2(O), deferred tax assets are recognised only  
to the extent that it is probable that they will be recovered through 
sufficient future taxable profits. The key assumptions to which the 
forecasts of the probable level of future taxable profits are most 
sensitive are future commodity prices, production levels and operating 
costs. Generally under Chilean tax law most tax losses can be carried 
forward indefinitely, and so the expiry of tax losses is not generally an 
issue. As set out in Note 27, the Group has recognised $272.1 million  
of deferred tax assets in respect of provisions, short-term timing 
differences and tax losses as at 31 December 2017. 

B)  Estimates 
The group makes estimates and assumptions concerning the future. The 
resulting accounting estimates will, by definition, seldom equal the related 
actual results. The estimates and assumptions that have a significant risk  
of causing a material adjustment to the carrying amounts of assets and 
liabilities within the next financial year are addressed below. 

(i) 

Useful economic lives of property, plant and equipment and ore reserves 
estimates 
As explained in Note 2(L), mining properties, including capitalised 
financing costs, are depreciated in proportion to the volume of ore 
extracted in the year compared with total proven and probable 
reserves at the beginning of the year. 

There are numerous uncertainties inherent in estimating ore reserves, 
and assumptions that were valid at the time of estimation may change 
when new information becomes available. These include assumptions 
as to grade estimates and cut-off grades, recovery rates, commodity 
prices, exchange rates, production costs, capital costs, processing  
and reclamation costs and discount rates. The actual volume of  
ore extracted and any changes in these assumptions could affect 
prospective depreciation rates and carrying values. 

The majority of other items of property, plant and equipment are 
depreciated on a straight-line basis over their useful economic lives. 
Management reviews the appropriateness of useful economic lives  
at least annually and, again, any changes could affect prospective 
depreciation rates and asset carrying values. 

The total depreciation and amortisation charge for 2017 was $578.4 
million, and so as a very simplistic sensitivity, a 10% adjustment to  
the useful economic lives of all of the Group’s property, plant and 
equipment would result in an impact of approximately $60 million  
on the annual depreciation charge. 

(ii)  Non-financial assets Impairment 

As explained in Note 2(M), the Group reviews the carrying value of  
its intangible assets and property, plant and equipment to determine 
whether there is any indication that those assets are impaired. In 
making assessments for impairment, assets that do not generate 
independent cash flows are allocated to an appropriate cash-
generating unit (“CGU”). The recoverable amount of those assets,  
or CGU, is measured at the higher of their fair value less costs to  
sell and value in use. Details of the impairment reviews undertaken  
as at 31 December 2017 are set out in Note 4. 

Management necessarily applies its judgement in allocating assets  
to CGUs, in estimating the probability, timing and value of underlying 
cash flows and in selecting appropriate discount rates to be applied 
within the fair value less cost to dispose calculation. The key 
assumptions are set out in Note 2(M) and Note 4. Subsequent  
changes to CGU allocation, licensing status, reserves and resources, 
price assumptions or other estimates and assumptions in the fair value 
less cost to dispose calculation could impact the carrying value of the 
respective assets. 

Details of the valuation and sensitivities of the assets of the Group’s 
mining operations are included in Note 4, including quantitative 
sensitivity analyses. 

(iii)  Provisions for decommissioning and site restoration costs 

As explained in Note 2(Q), provision is made, based on net present 
values, for decommissioning and site rehabilitation costs as soon as  
the obligation arises following the development or ongoing production 
of a mining property. The provision is based on a closure plan prepared 
with the assistance of external consultants. 

Management uses its judgement and experience to provide for  
and (in the case of capitalised decommissioning costs) amortise  
these estimated costs over the life of the mine. The ultimate cost  
of decommissioning and site rehabilitation is uncertain and cost 
estimates can vary in response to many factors including changes  
to relevant legal requirements, the emergence of new restoration 
techniques or experience at other mine sites. 

The expected timing and extent of expenditure can also change, for 
example in response to changes in ore reserves or processing levels. 
As a result, there could be significant adjustments to the provisions 
established which would affect future financial results. 

Details of the decommissioning and restoration provisions are set out 
in Note 28. The total value of these provisions as at 31 December 2017 
was $433.0 million. 

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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
EXCEPTIONAL ITEMS 

4 
Exceptional items are material items of income and expense which are non-regular or non-operating and typically non-cash movements. Profit  
excluding exceptional items is considered to be a useful performance measure as it provides an indication of the underlying earnings of the Group’s 
operations, excluding these one-off items. There are no exceptional items in the year ended 31 December 2017. The exceptional items in the year  
ended 31 December 2016 are shown in the table below. 

Before exceptional items 

1,841.1 

923.6 

Operating profit 

2017 
$m 

2016 
$m 

Share of results 
from associates 
and joint ventures 

Profit before tax 

Earnings per share 

2017 
$m 

59.7 

2016 
$m 

23.4 

2017 
$m 

2016 
$m 

1,830.8 

875.9   

2017 
$m 

76.2 

Provision against the carrying 
value of assets: 

Alto Maipo – Loan 

Alto Maipo – Investment 

Antucoya – PPE 

Energia Andina – Investment  

Total provision against the carrying 
value of assets 

– 

– 

– 

– 

– 

(241.0)

– 

(215.6)

– 

(456.6)

– 

– 

– 

– 

– 

– 

(126.6)

– 

(8.1)

(134.7)

– 

– 

– 

– 

– 

(241.0)  

(126.6)  

(215.6)  

(8.1)  

(591.3)  

– 

– 

– 

– 

– 

2016 
$m 

38.6 

(6.3)

(5.8)

(10.7)

0.2 

(22.6)

After exceptional items 

1,841.1 

467.0 

59.7 

(111.3)

1,830.8 

284.6   

76.2 

16.0 

This valuation exercise demonstrated positive headroom for all of the 
Group’s mining operations, with the recoverable amount of the assets  
in excess of their carrying value. As an additional down-side sensitivity,  
a valuation was performed with a 5% reduction in the long-term copper 
price. Los Pelambres and Zaldívar still showed positive headroom in this 
alternative down-side scenario, however the Antucoya valuation indicated  
a potential deficit of $40 million and the Centinela valuation indicated a 
potential deficit of $400 million. This was a simple sensitivity exercise, 
looking at an illustrative change in the forecast long-term copper price in 
isolation. In reality, a deterioration in the long-term copper price environment 
is likely to result in corresponding improvements in a range of input cost 
factors, as well as potential operational changes, which could partly mitigate 
these estimated potential sensitivities.  

(i)  Other asset sensitivities 
There were no indicators of potential impairment, or reversal of previous 
impairments, for the Group’s operations at the 2017 year-end, and 
accordingly no impairment reviews have been performed. However,  
in order to provide an indication of the sensitivities of the recoverable 
amount of the Group’s mining operations, a valuation and sensitivity  
analysis has been performed.  

The recoverable amount is the higher of fair value less costs of disposal  
and value in use. Fair value less costs of disposal reflects the net amount  
the Group would receive from the sale of the asset in an orderly transaction 
between market participants. For mining assets this would generally be 
determined based on the present value of the estimated future cash flows 
arising from the continued use, further development or eventual disposal of 
the asset. Value in use reflects the expected present value of the future cash 
flows which the Group would generate through the operation of the asset  
in its current condition, without taking into account potential enhancements 
or further development of the asset. The fair value less costs of disposal 
valuation will normally be higher than the value in use valuation, and 
accordingly the Group typically applies this valuation estimate in its 
impairment or valuation assessments. 

The key assumptions to which the value of the assets are most sensitive  
are future commodity prices, the discount rate used to determine the 
present value of the future cash flows, future operating costs, sustaining  
and development capital expenditure and ore reserve estimates. The 
commodity price forecasts (representing the Group’s estimates of the 
assumptions that would be used by independent market participants in 
valuing the assets) are based on the forward curve for the short term  
and consensus analyst forecasts including both investment banks and 
commodity consultants for the longer term. A long-term copper price of 
$3.0 usd/lb has been used in the base valuations. A real post-tax discount 
rate of 8% has been used in determining the present value of the forecast 
future cash flow from the assets. 

antofagasta.co.uk 

145 
145

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

SEGMENT INFORMATION 

5 
The Group’s reportable segments are as follows: 

–  Los Pelambres 

–  Centinela 

–  Antucoya 

–  Zaldívar 

–  Exploration and evaluation 

–  Corporate and other items 

–  Transport and other transport services 

For management purposes, the Group is organised into two business 
divisions based on their products – Mining and Transport and other 
transport services. The mining division is split further for management 
reporting purposes to show results by mine and exploration activity.  

A)  Segment revenues and results 
For the year ended 31 December 2017 

Los Pelambres produces primarily copper concentrate and molybdenum  
as a by-product. Centinela produces copper concentrate containing gold as  
a by-product and copper cathodes. Antucoya and Zaldívar produce copper 
cathodes. The transport division provides rail cargo and road cargo together 
with a number of ancillary services. All the operations are based in Chile. 
The Exploration and evaluation segment incurs exploration and evaluation 
expenses. “Corporate and other items” comprises costs incurred by the 
Company, Antofagasta Minerals SA, the Group’s mining corporate centre 
and other entities, that are not allocated to any individual business segment. 
Consistent with its internal management reporting, the Group’s corporate 
and other items are included within the mining division.  

The chief operating decision-maker monitors the operating results of  
the business segments separately for the purpose of making decisions  
about resources to be allocated and of assessing performance. Segment 
performance is evaluated based on the operating profit of each of  
the segments. 

Revenue 

2,423.9 

1,645.8 

Operating cost excluding depreciation 

Depreciation and amortisation 

(Loss)/gain on disposals 

Operating profit/(loss) 

Equity accounting results 

Investment income 

Interest expense 

Other finance items 

Profit/(loss) before tax 

Tax 

Profit/(loss) for the year from continuing operations 

Profit for the year from discontinued operations 

Profit/(loss) for the year 

Non-controlling interests 

Profit/(losses) attributable to the owners of  
the parent 

EBITDA1 

Additions to non-current assets 

Capital expenditure 

Segment assets and liabilities 

Segment assets 

Deferred tax assets  

Investment in associates and Joint Ventures 

Los Pelambres 
$m 

Centinela 
$m 

Antucoya 
$m 

Zaldívar 
$m 

Exploration and  
evaluation2  
$m 

Corporate  
and other items 
$m 

Railway  
and other 
transport services 
$m 

Mining 
$m 

(995.8) 

(205.2) 

(5.6) 

1,217.3 

– 

4.4 

(5.8) 

6.7 

1,222.6 

(360.1) 

862.5 

– 

862.5 

(342.1) 

520.4 

1,428.1 

(786.4)

(276.6)

(3.7)

579.1 

– 

6.2 

(24.9)

(5.9)

554.5 

(196.8)

357.7 

– 

357.7 

(93.7)

264.0 

859.4 

508.6 

(301.3)

(76.1)

– 

131.2 

– 

0.7 

(41.0)

(5.8)

85.1 

(1.2)

83.9 

– 

83.9 

(11.3)

– 

– 

– 

– 

– 

58.5 

– 

– 

– 

58.5 

– 

58.5 

– 

58.5 

– 

72.6 

207.3 

58.5 

134.2 

– 

(68.8)

– 

– 

– 

4,578.3 

(70.8)

(2,223.1) 

(6.7)

0.9 

(564.6) 

(8.4) 

(68.8)

(76.6)

1,782.2 

– 

– 

– 

– 

(68.8)

– 

(68.8)

– 

(68.8)

– 

(68.8)

(68.8)

(8.2)

11.9 

(17.8)

(3.2)

(93.9)

(58.6)

50.3 

23.2 

(89.5) 

(8.2) 

1,758.0 

(616.7) 

(152.5)

1,141.3 

0.5 

0.5 

(152.0)

1,141.8 

– 

(447.1) 

(152.0)

694.7 

(71.7)

2,488.5 

171.1 

(95.8) 

(16.5) 

0.1 

58.9 

9.4 

0.6 

(2.0) 

5.9 

72.8 

(16.9) 

55.9 

– 

55.9 

– 

55.9 

98.1 

Total 
$m 

4,749.4 

(2,318.9)

(581.1)

(8.3)

1,841.1 

59.7 

23.8 

(91.5)

(2.3)

1,830.8 

(633.6)

1,197.2 

0.5 

1,197.7 

(447.1)

750.6 

2,586.6 

263.6 

619.2 

78.2 

3,687.5 

5,479.2 

1,712.0 

– 

– 

– 

– 

0.5 

– 

– 

– 

– 

982.1 

– 

– 

8.4 

969.4 

32.1 

1,001.5 

9.5 

– 

– 

(4.5)

1,810.4 

12,698.6 

372.3 

13,070.9 

64.8 

22.1 

65.3 

1,004.2 

3.8 

65.5 

69.1 

1,069.7 

(657.1)

(4,951.7) 

(116.4) 

(5,068.1)

Segment liabilities 

(1,387.0) 

(1,943.0)

(960.1)

1.  EBITDA refers to Earnings Before Interest, Tax, Depreciation and Amortisation. EBITDA is calculated by adding back depreciation, amortisation, profit or loss on disposals and 
impairment charges to operating profit. This comprises 100% of the EBITDA from the Group´s subsidiaries, and the Group´s proportional share of the EBITDA of its associates 
and joint ventures (Note 37B). 

2.  Operating cash outflow in the exploration and evaluation segment was $45.6 million. 

146 
146

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
For the year ended 31 December 2016 

Los Pelambres 
$m 

Centinela 
$m 

Antucoya 
$m 

Zaldívar 
$m 

Exploration and  
evaluation2  
$m 

Corporate  
and other items 
$m 

Revenue 

1,845.6 

1,338.0 

Operating cost excluding depreciation 

Depreciation and amortisation 

(Loss) on disposals 

Provision against the carrying value of assets 

Operating profit/(loss) 

Equity accounting results 

Provision against the carrying value of assets 

Net share of results from associates and joint ventures 

Investment income 

Interest expense 

Other finance items 

Profit/(loss) before tax 

Tax 

Profit/(loss) for the year from continuing operations 

Profit for the year from discontinued operations 

Profit/(loss) for the year 

Non-controlling interests 

Profit/(losses) attributable to the owners of the parent 

EBITDA1 

Additions to non-current assets 

Capital expenditure 

Segment assets and liabilities 

Segment assets 

Deferred tax assets  

Investment in associates and Joint Ventures 

(923.8) 

(195.7) 

(0.2) 

(241.0) 

484.9 

0.4 

(126.6) 

(126.2) 

15.7 

(6.5) 

(2.7) 

365.2 

(117.4) 

247.8 

– 

247.8 

(97.9) 

149.9 

921.0 

(775.5)

(299.4)

(17.1)

– 

246.0 

– 

– 

– 

5.3 

(32.0)

(5.4)

213.9 

(73.3)

140.6 

– 

140.6 

(32.8)

107.8 

562.5 

277.9 

(213.0)

(62.7)

– 

(215.6)

(213.4)

– 

– 

– 

0.6 

(30.5)

(5.0)

(248.3)

94.3 

(154.0)

– 

(154.0)

74.3 

(79.7)

64.9 

316.6 

617.4 

27.4 

3,606.2 

5,008.0 

1,740.5 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

29.5 

– 

29.5 

– 

– 

– 

29.5 

– 

29.5 

– 

29.5 

– 

29.5 

85.1 

– 

– 

– 

983.6 

– 

Mining 
$m 

3,461.5 

– 

(56.5) 

(2,013.1) 

(5.2) 

(0.6) 

– 

(62.3) 

(11.2) 

(8.1) 

(19.3) 

4.7 

(14.6) 

3.0 

(563.0) 

(17.9) 

(456.6) 

410.9 

18.7 

(134.7) 

(116.0) 

26.3 

(83.6) 

(10.1) 

(88.5) 

227.5 

5.3 

(83.2) 

38.3 

(44.9) 

0.1 

(44.8) 

(91.1) 

136.4 

38.3 

174.7 

(56.3) 

118.4 

(50.8) 

1,538.4 

Railway  
and other 
transport services 
$m 

160.2 

(86.9)

(15.4)

(1.8)

– 

56.1 

4.7 

– 

4.7 

0.6 

(2.5)

(1.8)

57.1 

(17.5)

39.6 

– 

39.6 

– 

39.6 

87.7 

Total 
$m 

3,621.7 

(2,100.0)

(578.4)

 (19.7)

(456.6)

467.0 

23.4 

(134.7)

(111.3)

26.9 

(86.1)

(11.9)

284.6 

(108.6)

176.0 

38.3 

214.3 

(56.3)

158.0 

1,626.1 

– 

(44.3)

– 

– 

– 

(44.3)

– 

– 

– 

– 

– 

– 

(44.3)

– 

(44.3)

– 

(44.3)

– 

(44.3)

(44.3)

– 

31.0 

992.4 

16.9 

1,009.3 

9.5 

– 

– 

(4.5)

1,867.2 

12,231.4 

323.0 

12,554.4 

78.6 

25.2 

78.6 

1,008.8 

4.2 

77.8 

(638.3) 

(5,075.6) 

(138.5)

82.8 

1,086.6 

(5,214.1)

Segment liabilities 

(1,368.2) 

(1,979.3)

(1,085.3)

1.  EBITDA refers to Earnings Before Interest, Tax, Depreciation and Amortisation. EBITDA is calculated by adding back depreciation, amortisation, profit or loss on disposals and 
impairment charges to operating profit. This comprises 100% of the EBITDA from the Group´s subsidiaries, and the Group´s proportional share of the EBITDA of its associates 
and joint ventures (Note 37B). 

2.  Operating cash outflow in the exploration and evaluation segment was $22.1 million. 

antofagasta.co.uk 

147 
147

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

5 

SEGMENT INFORMATION CONTINUED 

Notes to segment revenues and results 

(i) 

Inter-segment revenues are eliminated on consolidation. Revenue from the Railway and other transport services segment is stated after eliminating  
inter-segmental sales to the mining division of $0.3 million (year ended 31 December 2016 – $1.2 million).  

(ii)  Revenue includes provisionally priced sales of copper and molybdenum concentrates and copper cathodes. Further details of such adjustments  

are given in Note 6. 

(iii)  The copper and molybdenum concentrate sales are stated net of deductions for tolling charges. Tolling charges for copper and molybdenum 

concentrates are detailed in Note 6. 

(iv)  The effects of tax and non-controlling interests on the expenses within the Exploration and evaluation segment are allocated to the mine that  

the exploration work relates to. 

(v)  The assets of the Railway and transport services segment include $60.1 million (31 December 2016 – $71.3 million) relating to the Group’s 40% interest 

in Inversiones Hornitos SA (“Inversiones Hornitos”), which owns the 165MW Hornitos thermoelectric power plant in Mejillones in Chile’s Antofagasta 
Region and $5.3 million (31 December 2016 – $6.5 million) relating to the Group’s 30% interest in Antofagasta Terminal International SA (“ATI”), which 
operates a concession to manage installations in the port of Antofagasta. The assets of the Corporate and other items segment includes $22.0 million 
(31 December 2016 – $22.0 million) relating to the Group´s 30% interest in Parque Eólico El Arrayan SA, an energy company which operates a wind 
farm in Chile and $0.2 million (31 December 2016 – $3.2 million) relating to the Group´s 50.1% interest in the Energia Andina joint venture. Further 
details of these investments are set out in Note 17. 

2017 
$m 

2016 
$m 

2,149.0 

1,037.0 

378.6 

508.6 

68.7 

209.7 

1,627.0 

778.7 

278.1 

277.9 

78.5 

261.2 

168.5 

94.0 

37.7 

20.5 

4,578.3 

171.1 

4,749.4 

46.1 

20.0 

3,461.5 

160.2 

3,621.7 

B)  Entity-wide disclosures 

Revenue by product 

Copper 

–  Los Pelambres 
–  Centinela concentrate 
–  Centinela cathodes 
–  Antucoya 
Gold 

–  Los Pelambres 
–  Centinela  
Molybdenum 

–  Los Pelambres 
Silver 

–  Los Pelambres 
–  Centinela 
Total 

Railway and transport services 

148 
148

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
Revenue by location of customer 

Europe 

–  United Kingdom 
–  Switzerland 
–  Spain 
–  Germany 
–  Rest of Europe 
Latin America 

–  Chile 
–  Rest of Latin America 
North America 

–  United States 
Asia 

–  Japan 
–  China 
–  Rest of Asia 

2017 
$m 

46.6 

835.1 

163.5 

139.4 

114.2 

206.9 

125.2 

2016 
$m 

– 

217.7 

115.6 

38.5 

157.3 

105.2 

126.4 

207.4 

49.5 

1,698.2 

1,483.5 

484.8 

728.1 

771.9 

556.1 

4,749.4 

3,621.7 

Information about major customers 
In the year ended 31 December 2017 the Group’s mining revenue included $823.4 million related to one large customer that individually accounted for more 
than 10% of the Group’s revenue (year ended 31 December 2016 – one large customer representing $694.7 million). 

Non-current assets by location of assets 

Chile 

USA 

Other 

2017 
$m 

10,250.2 

215.4 

0.1 

2016 
$m 

9,996.3 

204.4 

0.1 

10,465.7 

10,200.8 

The above non-current assets disclosed by location of assets exclude financial instruments, available-for-sale investments and deferred tax assets. 

antofagasta.co.uk 

149 
149

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

REVENUE 

6 
An analysis of the Group’s total revenue is as follows: 

Sales of goods 

Rendering of services 

Group revenue 

Other operating income (included within net operating costs) 

Investment income 

Total income 

2017 
$m 

4,607.6 

141.8 

4,749.4 

26.0 

23.8 

2016 
$m 

3,486.8 

134.9 

3,621.7 

20.2 

26.9 

4,799.2 

3,668.8 

Copper and molybdenum concentrate sale agreements and copper cathode sale agreements generally provide for provisional pricing of sales at the time  
of shipment, with final pricing being based on the monthly average London Metal Exchange copper price or monthly average molybdenum price for specified 
future periods. This normally ranges from one to four months after shipment to the customer. The provisional pricing mechanism within the sale agreements  
is an embedded derivative under IFRS. Gains and losses from the marking-to-market of open sales are recognised through adjustments to revenue in the 
income statement and to trade debtors in the balance sheet. The Group determines mark-to-market prices using forward prices at each period end for 
copper concentrate and cathode sales, and period-end month average prices for molybdenum concentrate sales due to the absence of a futures market  
in the market price references for that commodity in the majority of the Group’s contracts. 

In addition to mark-to-market and final pricing adjustments, revenue also includes realised gains and losses relating to derivative commodity instruments.  
Details of these realised gains or losses are shown in the tables below. Further details of derivative commodity instruments in place at the period end are 
given in Note 24. 

Copper and molybdenum concentrate sales are stated net of deductions for tolling charges, as shown in the tables below. 

For the year ended 31 December 2017 

Provisionally invoiced gross sales 

2,138.9 

1,031.1 

385.9 

502.7 

70.4 

209.6 

173.6 

Los Pelambres 
Copper 
concentrate 
$m 

Centinela 
Copper 
concentrate 
$m 

Centinela 
Copper 
cathodes 
$m 

Antucoya 
Copper 
cathodes 
$m 

Los Pelambres 
Gold in 
concentrate 
$m 

Centinela  
Gold in 
concentrate 
$m 

Los Pelambres 
Molybdenum 
concentrate 
$m 

Effects of pricing adjustments to  
previous year invoices 

Reversal of mark-to-market adjustments at the 
end of the previous year 

Settlement of sales invoiced in the previous year 

Total effect of adjustments to previous year 
invoices in the current year 

Effects of pricing adjustments to  
current year invoices 

(28.0) 

53.3 

(15.3)

37.6 

25.3 

22.3 

Settlement of sales invoiced in the current year 

110.2 

Mark-to-market adjustments at the end of  
the current year 

Total effect of adjustments to  
current year invoices 

Total pricing adjustments 

Realised losses on commodity derivatives 

Revenue before deducting tolling charges 

Tolling charges 

54.1 

164.3 

189.6 

– 

2,328.5 

(179.5) 

61.7 

20.1 

81.8 

104.1 

– 

1,135.2 

(98.2)

0.4 

– 

0.4 

3.9 

1.7 

0.6 

0.7 

1.3 

5.7 

2.7 

5.6 

6.0 

(13.3)

378.6 

– 

8.4 

9.7 

(3.8)

508.6 

– 

Revenue net of tolling charges 

2,149.0 

1,037.0 

378.6 

508.6 

– 

(0.9) 

1.3 

(2.2) 

(0.9) 

(0.9) 

(0.6) 

– 

(0.6) 

(1.5) 

– 

68.9 

(0.2) 

68.7 

1.5 

0.2 

1.7 

0.8 

– 

210.4 

(0.8) 

209.6 

0.7 

2.0 

2.7 

3.2 

4.7 

7.9 

10.6 

– 

184.2 

(15.7)

168.5 

150 
150

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
For the year ended 31 December 2016 

Provisionally invoiced gross sales 

1,715.1 

845.2 

276.8 

274.2 

78.9 

263.9 

105.5 

Los Pelambres 
Copper concentrate 
$m 

Centinela 
Copper concentrate 
$m 

Centinela 
Copper 
cathodes 
$m 

Antucoya 
Copper 
cathodes 
$m 

Los Pelambres  
Gold in concentrate 
$m 

Centinela 
Gold in concentrate 
$m 

Los Pelambres 
Molybdenum 
concentrate 
$m 

Effects of pricing adjustments to  
previous year invoices 

Reversal of mark-to-market adjustments at the 
end of the previous year 

Settlement of sales invoiced in the previous year 

Total effect of adjustments to previous year 
invoices in the current year 

Effects of pricing adjustments to  
current year invoices 

Settlement of sales invoiced in the current year 

Mark-to-market adjustments at the end of  
the current year 

Total effect of adjustments to  
current year invoices 

Total pricing adjustments 

Realised gains on commodity derivatives 

Revenue before deducting tolling charges 

Tolling charges 

Revenue net of tolling charges 

14.5 

(18.9)

(4.4)

80.5 

28.0 

6.2 

(0.2)

(7.8)

(1.6)

– 

(0.2)

– 

– 

– 

28.7 

15.3 

4.1 

(0.4)

4.3 

(0.6)

108.5 

44.0 

3.7 

104.1 

– 

1,819.2 

(192.2)

1,627.0 

42.4 

– 

887.6 

(108.9)

778.7 

3.7 

3.7 

– 

3.5 

(2.2)

278.1 

277.9 

– 

– 

278.1 

277.9 

– 

(0.1) 

(0.1) 

(0.1) 

– 

(0.1) 

(0.2) 

– 

78.7 

(0.2) 

78.5 

2.2 

(1.0)

1.2 

(1.6)

(1.3)

(2.9)

(1.7)

– 

262.2 

(1.0)

261.2 

(1.0)

1.7 

0.7 

2.4 

(0.7)

1.7 

2.4 

– 

107.9 

(13.9)

94.0 

(I)  Copper concentrate 
The typical period for which sales of copper concentrate remain open until settlement occurs is a range of approximately three to four months from  
shipment date.  

Sales  

Average mark-to-market price  

Average provisional invoice price  

2017 

2016 

Tonnes 

160,900 

199,900 

$/lb 

$/lb 

3.28 

3.07 

2.51 

2.41 

(II)  Copper cathodes 
The typical period for which sales of copper cathodes remain open until settlement occurs is approximately one month from shipment date.  

Sales  

Average mark-to-market price  

Average provisional invoice price  

2017 

Tonnes 

14,700 

$/lb 

$/lb 

3.27 

3.14 

2016 

13,200 

2.51 

2.54 

antofagasta.co.uk 

151 
151

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

6 

REVENUE CONTINUED 

(III)  Gold concentrates 
The typical period for which sales of gold in concentrate remain open is approximately one month from shipment date.  

Sales  

Average mark-to-market price  

Average provisional invoice price  

(IV)  Molybdenum concentrate 
The typical period for which sales of molybdenum remain open is approximately two months from shipment date.  

Sales  

Average mark-to-market price  

Average provisional invoice price  

Ounces 

$/oz 

$/oz 

Tonnes 

$/lb 

$/lb 

2017 

7,100 

1,300 

1,268 

2017 

2,400 

9.4 

8.5 

2016 

36,400 

1,167 

1,203 

2016 

1,300 

6.6 

6.9 

As detailed above, the effects of gains and losses from the marking-to-market of open sales are recognised through adjustments to revenue in the income 
statement and to trade debtors in the balance sheet. The effect of mark-to-market adjustments on the balance sheet at the end of each period are as follows: 

Los Pelambres – copper concentrate 

Los Pelambres – molybdenum concentrate 

Centinela – copper concentrate 

Centinela – gold concentrate 

Centinela – copper cathodes 

Antucoya – copper cathodes 

Effect on debtors of year end mark-to-
market adjustments 

2017 
$m 

54.1 

4.7 

20.1 

0.2 

1.7 

2.7 

83.5 

2016 
$m 

28.0 

(0.7)

15.3 

(1.3)

(0.4)

(0.6)

40.3 

PROFIT BEFORE TAX 

7 
Operating profit from subsidiaries and total profit from operations and associates and joint ventures is derived from Group revenue by deducting operating 
costs as follows: 

Group revenue 

Cost of sales  

Gross profit 

Administrative and distribution expenses 

Provision against carrying value of assets 

Other operating income 

Other operating expenses 

Operating profit from subsidiaries  

Equity accounting results 

Provision against carrying value of assets 

Net share of results from associates and joint ventures 

Total profit from operations, associates and joint ventures  

2017 
$m 

2016 
$m 

4,749.4 

3,621.7 

(2,356.4) 

(2,102.6)

2,393.0 

(414.1) 

– 

26.0 

(163.8) 

1,841.1 

59.7 

– 

59.7 

1,900.8 

1,519.1 

(479.1)

(456.6)

20.2 

(136.6)

467.0 

23.4 

(134.7)

(111.3)

355.7 

Other operating expenses mainly comprise $39.8 million of costs relating to the decommissioning and restoration provisions (2016 – $9.3 million),  
$68.8 million of exploration and evaluation expenditure (2016 – $44.3 million) and $55.2 million of other expenses (2016 – $83.0 million). 

152 
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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
Profit before tax is stated after (charging)/crediting: 

Foreign exchange (losses)/gains 

–  included in net finance costs 
–  included in income tax expense 
Depreciation of property, plant and equipment 

–  owned assets 
–  assets held under finance leases 
Loss on disposal of property, plant and equipment 

Exceptional provision against carrying value of property, plant and equipment (Note 4) 

Cost of inventories recognised as expense 

Employee benefit expense 

Closure provision 

Severance charges 

Exploration and evaluation cost 

Auditors´ remuneration 

A more detailed analysis of auditors´ remuneration on a worldwide basis is provided below: 

 Group 

Fees payable to the Company´s auditor and its associates for the audit of parent company and consolidated  
financial statements 

Fees payable to the Company´s auditor and its associates for other services: 

–  The audit of the Company’s subsidiaries 
–  Audit-related assurance services 
–  Tax advisory services 
–  Tax compliance services 
–  Other assurance services 
–  Corporate finance services not covered above 
–  Other non-audit services 

2017 
$m 

17.1 

0.7 

(553.5)

(27.6)

(8.3)

– 

(1,697.0)

(417.8)

(39.8)

(31.9)

(68.8)

(1.8)

2017 
$000 

1,003 

315 

268 

45 

– 

46 

65 

118 

2016 
$m 

(2.9)

4.5 

(552.6)

(25.8)

(19.7)

(215.6)

(1,520.8)

(368.2)

(9.3)

(15.5)

(44.3)

(1.6)

2016 
$000 

977 

255 

249 

32 

20 

90 

0 

17 

1,860 

1,640 

Details of the Company’s policy on the use of auditors for non-audit services, the reason why the auditor was used rather than another supplier and how the 
auditor’s independence and objectivity was safeguarded are set out in the Audit Committee report on page 93. No services were provided pursuant to 
contingent fee arrangements. 

antofagasta.co.uk 

153 
153

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

8 

EMPLOYEES  

A)  Average monthly number of employees 

Los Pelambres 

Centinela 

Michilla 

Antucoya 

Exploration and evaluation 

Corporate and other employees 

–  Chile 
–  United Kingdom 
–  Other 
Mining 

Railway and other transport services 

2017  
Number 

900 

2,044 

5 

737 

49 

447 

5 

4 

4,191 

1,219 

5,410 

2016 
Number 

901 

1,986 

35 

726 

53 

379 

6 

4 

4,090 

1,337 

5,427 

(i) 

(ii) 

The average number of employees for the year includes all the employees of subsidiaries. The average number of employees does not include contractors who are not 
directly employed by the Group. 

The average number of employees does not include employees from associates and joint ventures. 

(iii)  The average number of employees includes Non-Executive Directors. 

B)  Aggregated remuneration 
The aggregated remuneration of the employees included in the table above was as follows: 

Wages and salaries 

Social security costs 

2017 
$m 

(396.5) 

(21.3) 

(417.8) 

2016 
$m 

(346.4)

(32.8)

(379.2)

During 2016 $11.0 million was capitalised relating to Minera Antucoya on wages, salaries and social security cost.  

C)  Key management personnel 
In accordance with IAS 24, key management personnel are those persons having authority and responsibility for planning, directing and controlling the 
activities of the Group, directly or indirectly, including any Directors (Executive and Non-Executive) of the Company. Key management personnel who are  
not Directors have been treated as responsible senior management at the Corporate Centre and those responsible for the running of the key business 
divisions of the Group. 

Compensation for key management personnel (including Directors) was as follows: 

Salaries and short-term employee benefits 

2017 
$m 

(18.7) 

(18.7) 

2016 
$m 

(15.1)

(15.1)

Disclosures on Directors’ remuneration required by Schedule 8 of the Large and Medium-sized Companies and Group (Financial Statement) Regulations 
2008 including those specified for audit by that Schedule are included in the Remuneration report on page 102. 

154 
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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
9  NET FINANCE EXPENSE 

Investment income 

Interest income 

Fair value through profit or loss 

Interest expense 

Interest expense 

Preference dividends 

Other finance items 

Time value effect of options 

Unwinding of discount on provisions 

Foreign exchange 

Net finance expense 

2017 
$m 

9.2 

14.6 

23.8 

(91.4)

(0.1)

(91.5)

(7.8)

(11.6)

17.1 

(2.3)

(70.0)

2016 
$m 

20.4 

6.5 

26.9 

(86.0)

(0.1)

(86.1)

1.0 

(10.0)

(2.9)

(11.9)

(71.1)

During 2017, amounts capitalised and consequently not included within the above table were as follows: Antucoya nil (year ended 31 December 2016 –  
$9.2 million), $8.8 million at Centinela (year ended 31 December 2016 – $2.3 million) and $1.3 million at Los Pelambres (year ended 31 December 2016 – 
$0.5 million). 

The fair value through profit or loss line represents the fair value gains relating to liquid investments. 

antofagasta.co.uk 

155 
155

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

INCOME TAX EXPENSE 

10 
The tax charge for the year comprised the following: 

Current tax charge 

–  Corporate tax (principally first category tax in Chile) 
–  Mining tax (royalty) 
–  Withholding tax 
–  Exchange losses on corporate tax balances 

Deferred tax charge 

–  Corporate tax (principally first category tax in Chile) 
–  Exceptional items 
–  Mining tax (royalty) 
–  Withholding tax provision 

Total tax charge 

2017 
$m 

2016 
$m 

(376.6) 

(69.1) 

(64.8) 

0.7 

(222.1)

(35.3)

(3.8)

– 

(509.8) 

(261.2)

(114.6) 

– 

(9.2) 

– 

(123.8) 

(633.6) 

(27.5)

204.9 

(24.8)

– 

152.6 

(108.6)

The rate of first category (i.e. corporate) tax in Chile is 25.5% (2016 – 24.0%). 

In addition to first category tax, the Group incurs withholding taxes on remittance of profits from Chile and deferred tax is provided on undistributed earnings  
to the extent that remittance is probable in the foreseeable future. Withholding tax is levied on remittances of profits from Chile at 35% less first category  
(i.e. corporate) tax already paid in respect of the profits to which the remittances relate.  

The Group’s mining operations are also subject to a mining tax (royalty). In 2017 production from Los Pelambres and Centinela (Tesoro Central and Mirador 
pit) were subject to a rate of 4% of taxable operating profit and Centinela concentrates of 5%, and production from Antucoya, Encuentro (oxides), El Tesoro 
North East pit and the run-of-mine processing at Centinela cathodes is subject to a rate of between 5–14%, depending on the level of operating profit margin. 
From 2018 onwards the production from Los Pelambres will be subject to a rate of between 5–14%, depending on the level of operating profit margin, and 
the Tesoro Central and Mirador pits at Centinela will be subject to a rate of 5%. 

Profit before tax  

Tax at the Chilean corporate tax rate of 25.5% (2016 – 24%)  

Provision against carrying value of assets (exceptional items) 

Effect of increase in future first category tax rates on deferred tax 
balances 

Adjustment in respect of prior years 

Items not deductible from first category tax 

Deduction of mining royalty as an allowable expense in 
determination of first category tax 

Carry-back tax losses resulting in credits at historic tax rates 

Credit of tax losses absorbed from dividends of the year 

Mining tax (royalty) 

Withholding taxes 

Withholding taxes – adjustment to previous year 

Tax effect of share of results of associates and joint ventures 

Reversal of previously unrecognised tax losses 

Net other items 

Tax expense and effective tax rate for the year 

$m 

 1,830.8 

 (466.9)

– 

 (0.6)

 (35.4)

 (26.7)

2017    

% 

 25.5 

– 

– 

 1.9 

 1.5 

 17.4 

 (1.0)

– 

 (4.3)

 (78.3)

 (64.8)

– 

 15.2 

9.9 

 0.9 

(633.6)

– 

 0.2 

 4.3 

 3.5 

– 

 (0.8)

(0.5)

– 

 34.6 

2016 
before exceptional items  

2016 
after exceptional items  

$m 

875.9 

(210.2)

– 

(24.6)

– 

(23.7)

8.5 

(5.4)

–

(60.1)

– 

(3.8)

5.6 

– 

0.2 

(313.5)

% 

24.0   

–   

2.8   

–   

2.7   

(1.0)  

0.6   

–   

6.9   

–   

0.4   

(0.6)  

–   

(0.0)  

35.8   

$m 

284.6 

(68.3) 

63.0 

(24.6) 

– 

(23.7) 

8.5 

(5.4) 

– 

(60.1) 

– 

(3.8) 

5.6 

– 

0.2 

(108.6) 

% 

24.0 

(22.1)

8.6 

– 

8.3 

(2.9)

1.8 

– 

21.1 

– 

1.3 

(1.9)

– 

(0.0)

38.2 

The effective tax rate varied from the statutory rate principally due to the mining royalty tax (impact of $78.3 million / 4.3%), the withholding tax due on 
remittances of profits from Chile (impact of $64.8 million / 3.5%), adjustments in respect of prior years, which relate to adjustments made during the year in 
the deferred tax asset base (impact of $35.4 million / 1.9%) and items not deductible for Chilean corporate tax purposes, principally the funding of expenses 
outside of Chile (impact of $26.7 million / 1.5%), partly offset by the deduction of the mining royalty tax which is an allowable expense when determining the 
Chilean corporate tax charge (impact of $17.4 million / 1.0%) and the impact of the recognition of the Group’s share of profit from associates and joint 
ventures, which are included in the Group’s profit before tax net of their respective tax charges (impact of $15.2 million / 0.8%). 

156 
156

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
11  DISCONTINUED OPERATIONS 

(I)  Profit for the period from discontinued operations 
At 31 December, 2017, the Group had commenced a process to dispose of Centinela Transmission, the electricity transmission line supplying Centinela and 
other external parties. Accordingly, the net results of Centinela Transmission are shown as a discontinued operation in the income statement. The net results 
reflect the following elements: 

Revenue 

Total operating costs 

Net finance(expense)/income 

Profit/(Loss) before tax 

Attributable tax expense 

Profit/(Loss) of discontinued operations 

Profit on disposal of discontinued operations 

Attributable tax expense 

Net Profit attributable to discontinued operations (attributable to owners of the 
Company) 

Centinela 
Transmission 
$m 

Year ended  
31 December 2017  
$m 

3.4 

(2.8)

– 

0.6 

(0.1)

0.5 

– 

– 

0.5 

3.4 

(2.8) 

– 

0.6 

(0.1) 

0.5 

– 

– 

0.5 

Michilla 
$m 

3.8 

(10.2)

(1.4)

(7.8)

4.4 

(3.4)

42.9 

(1.2)

38.3 

Year ended 
31 December 
2016 
$m 

3.8 

(10.2)

(1.4)

(7.8)

4.4 

(3.4)

42.9 

(1.2)

38.3 

During 2017 Centinela Transmission contributed $2.2 million (2016 – nil) to the Group´s net cash flow from operating activities, nil (2016 – nil) in respect  
to net cash used in investing activities and paid nil (2016 – nil) in net cash provided in financing activities. 

(II)  Disposal of Centinela Transmission 
The individual assets and liabilities of Centinela Transmission have been reclassified into a disposal group on the balance sheet. The individual assets and 
liabilities contained within this disposal group are as follows: 

Assets of disposal group classified as held for sale: 

Property, plant and equipment 

Trade receivables and other receivables 

Cash and cash equivalents 

Long-term provision 

Deferred tax assets 

Total 

Liabilities of disposal group classified as held for sale: 

Trade and other payables 

Current tax liabilities 

Total carrying amount disposed 

At 31 December 2017 
$m 

33.2 

2.2 

2.2 

– 

0.2 

37.8 

(0.1)

(0.3)

(0.4)

A recent change in the law in Chile resulted in companies with their own electricity supply infrastructure starting to charge third parties where applicable  
for the use of that infrastructure. This resulted in Centinela transferring its electricity supply infrastructure to the newly created Centinela Transmission  
group entity during 2017, which recognises this new revenue stream. Hence, there are no comparative amounts for Centinela Transmission in 2016. 

antofagasta.co.uk 

157 
157

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

12  EARNINGS PER SHARE 

Profit for the year attributable to equity holders of the Company  

Ordinary shares in issue throughout each year 

Basic earnings per share 

From continuing operations 

From discontinued operations 

Total continuing and discontinued operations 

Total continuing and discontinued operations (excluding exceptional items) 

2017 
$m 

750.6 

2017  
Number 

2016 
$m 

158.0 

2016 
Number 

985,856,695  985,856,695 

2017  
US cents 

2016 
US cents 

76.1 

0.1 

76.2 

76.2 

12.1 

3.9 

16.0 

38.6 

Basic earnings per share are calculated as profit after tax and non-controlling interests, based on 985,856,695 ordinary shares. 

There was no potential dilution of earnings per share in either year set out above, and therefore diluted earnings per share did not differ from basic earnings  
per share as disclosed above. 

Reconciliation of basic earnings per share from continuing operations: 

Profit for the year attributable to equity holders of the Company  

Less: profit for discontinued operations 

Profit from continuing operations 

Ordinary shares 

Basic earnings per share from continuing operations 

13  DIVIDENDS 
Amounts recognised as distributions to equity holders in the year: 

Final dividend paid in June (proposed in relation to the previous year) 

–  ordinary 
Interim dividend paid in October 

–  ordinary 

$m 

$m 

$m 

2017 

750.6 

(0.5) 

750.1 

2016 

158.0 

(38.3)

119.7 

Number  985,856,695  985,856,695 

US cent 

76.1 

12.1 

2017 
$m 

2016  
$m 

2017  
cents  
per share 

2016 
cents 
per share 

150.8 

– 

15.3 

101.5 

252.3 

30.6 

30.6 

10.3 

25.6 

– 

3.1 

3.1 

The proposed final dividend for each year, which is subject to approval by shareholders at the Annual General Meeting and has therefore not been included 
as a liability in these financial statements, is as follows: 

Final dividend proposed in relation to the year 

–  ordinary 

2017 
$m 

400.3 

400.3 

2016  
$m 

151.0 

151.0 

2017  
cents  
per share 

40.6 

40.6 

2016 
cents 
per share 

15.3 

15.3 

This gives total dividends proposed in relation to 2017 (including the interim dividend) of 50.9 cents per share or $501.8 million (2016 – 18.4 cents per share  
or $181.6 million). 

In accordance with IAS 32, preference dividends have been included within interest expense (see Note 9) and amounted to $0.1 million (2016 –$0.1 million). 

Further details of the currency election timing and process (including the default currency of payment) are available on the Antofagasta plc website 
(www.antofagasta.co.uk) or from the Company’s registrar, Computershare Investor Services PLC on +44 370 702 0159. 

Further details relating to dividends for each year are given in the Directors’ Report on page 123.  

158 
158

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
14 

INTANGIBLE ASSETS 

Cost 

At 1 January 2016 

Additions 

Disposals 

Foreign currency exchange difference 

At 31 December 2016 

Additions  

Disposals 

Foreign currency exchange difference 

At 31 December 2017 

$m 

150.1 

– 

– 

– 

150.1 

– 

– 

– 

150.1 

The $150.1 million intangible asset reflects the value of Twin Metals’ mining licences assets showed as part of corporate segment. These items will  
be transferred to the mining properties category within property, plant and equipment when construction of the Twin Metals project commences. 

antofagasta.co.uk 

159 
159

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
Mining 
properties 
$m 

Stripping 
Cost 
$m 

Buildings and 
infrastructure 
$m 

Railway 
track 
$m 

Wagons 
and rolling stock 
$m 

Machinery, 
equipment and 
others  
$m 

Assets under 
construction 
$m 

Total 
$m 

FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

15  PROPERTY, PLANT AND EQUIPMENT 

Cost 

At 1 January 2016 

Restatement 

Restated Balances 

Additions  

Additions – depreciation capitalised  

Adjustment to capitalised decommissioning provisions 

Capitalisation of interest 

Reclassifications 

Disposal of subsidiary 

Asset disposals 

At 31 December 2016 

Additions 

Additions – depreciation capitalised 

Adjustment to capitalised decommissioning provisions 

Capitalisation of interest 

Critical spare part capitalisation 

Reclassifications 

Asset disposals 

Assets transferred to disposal group classified as held 
for sale 

Land  
$m 

38.2 

15.2 

53.4 

– 

– 

– 

– 

– 

– 

– 

53.4 

1.5 

– 

– 

– 

– 

– 

– 

– 

1,479.6 

294.5 

(832.4) 

647.2 

6.4 

– 

– 

– 

– 

(12.9) 

(0.6) 

640.1 

2.3 

– 

– 

– 

– 

– 

(0.2) 

– 

– 

294.5 

319.5 

64.8 

– 

– 

– 

– 

(36.3)

642.5 

370.6 

58.6 

– 

– 

– 

– 

– 

– 

4,310.2 

157.4 

4,467.6 

0.2 

– 

16.9 

– 

398.6 

(68.0)

(4.5)

78.4 

(6.5)

71.9 

– 

– 

– 

– 

4.6 

– 

(1.3)

4,810.8 

75.2 

– 

– 

(3.7)

– 

0.9 

111.6 

– 

(14.5)

– 

– 

– 

– 

– 

1.1 

– 

– 

At 31 December 2017 

54.9 

642.2 

1,071.7 

4,905.1 

76.3 

Accumulated depreciation and impairment 

At 1 January 2016 

Restatement 

Restated Balances 

Charge for the year 

Depreciation capitalised in inventories 

Depreciation capitalised in property, plant and equipment 

Impairment 

Disposal of subsidiary 

Reclassifications 

Asset disposals 

At 31 December 2016 

Charge for the year 

Depreciation capitalised in inventories 

Depreciation capitalised in property, plant and equipment 

Reclassification Impairment 

Asset disposals 

Assets transferred to disposal group classified as held 
for sale 

At 31 December 2017 

Net book value 

At 31 December 2017 

At 31 December 2016 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

(860.7) 

(126.7)

(1,319.8)

(22.0)

484.5 

(376.2) 

(20.6) 

– 

– 

– 

12.9 

(4.6) 

– 

(388.5) 

(42.9) 

– 

– 

(10.6) 

– 

– 

– 

(126.7)

(51.9)

– 

– 

– 

– 

– 

19.4 

(159.2)

(45.7)

– 

– 

– 

– 

– 

(212.3)

(0.9)

(1,532.1)

(22.9)

(185.4)

(2.6)

– 

– 

– 

68.0 

(3.9)

4.5 

– 

– 

– 

– 

– 

0.5 

(1,648.9)

(25.0)

(195.0)

(2.8)

– 

– 

(83.4)

– 

12.1 

– 

– 

– 

– 

– 

(442.0) 

(204.9)

(1,915.2)

(27.8)

54.9 

53.4 

200.2 

251.6 

866.8 

251.6 

2,989.9 

3,161.9 

48.5 

50.2 

Assets under finance leases included in the totals above 

Net book value 

At 31 December 2017 

At 31 December 2016 

– 

– 

– 

– 

– 

– 

25.4 

26.6 

– 

– 

160 
160

Antofagasta Annual Report 2017 

131.5 

(20.5)

111.0 

1.5 

– 

– 

– 

10.4 

– 

(2.8)

120.1 

– 

– 

– 

– 

– 

0.6 

(0.2)

– 

120.5 

(77.4)

13.1 

(64.3)

(8.4)

– 

– 

– 

– 

– 

2.1 

(70.6)

(8.1)

– 

– 

– 

0.3 

– 

(78.4)

42.1 

49.5 

– 

– 

5,663.4 

416.3 

6,079.7 

56.7 

22.8 

– 

2.9 

507.4 

(298.7) 

(9.9) 

6,360.9 

52.7 

– 

– 

10.2 

9.2 

135.6 

(10.5) 

(39.4) 

6,518.7 

(2,033.6) 

(69.4) 

(2,103.0) 

(309.5) 

8.4 

(87.6) 

(215.6) 

298.7 

(438.5) 

12.6 

(2,834.5) 

(287.4) 

(1.4) 

(58.6) 

94.0 

3.1 

8.6 

(3,076.2) 

3,442.5 

3,526.4 

1,493.1 

13,488.9 

55.5 

(215.0)

1,548.6 

13,273.9 

537.4 

921.7 

– 

– 

– 

(920.8)

87.6 

16.9 

2.9 

0.2 

– 

(379.6)

(4.0)

(59.4)

1,161.2 

13,864.2 

515.8 

942.9 

– 

– 

– 

– 

(248.9)

58.6 

(3.7)

10.2 

10.1 

– 

(8.7)

(19.6)

– 

(53.9)

1,419.4 

14,808.8 

(447.6)

(4,887.8)

– 

215.0 

(447.6) 

(4,672.8)

– 

– 

– 

– 

– 

447.6 

– 

– 

– 

– 

– 

– 

– 

– 

– 

(578.4)

8.4 

(87.6)

(215.6)

379.6 

0.6 

39.1 

(5,126.7)

(581.9)

(1.4)

(58.6)

– 

3.4 

20.7 

(5,744.5)

1,419.4 

9,064.3 

1,161.2 

8,737.5 

87.0 

83.1 

– 

– 

112.4 

109.7 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Group has pledged assets with a carrying value of $1,650.0 million (2016 – $1,086.4 million) as security against bank loans provided to the Group.  

At 31 December 2017 the Group had entered into contractual commitments for the acquisition of property, plant and equipment amounting to $174.5 million 
(2016 – $196.1 million) of which $20.9 million were related to the development of the Encuentro Oxides project. 

Compensation from insurance companies related to property, plant and equipment included in the consolidated income statement was nil in 2017  
(2016 – $2.3 million). 

The average interest rate for the amounts capitalised was 1.9% (2016 – 1.1%). 

At 31 December 2017, assets capitalised relating to the decommissioning provision were $146.5 million (at 31 December 2016 – $147.2 million). 

Depreciation capitalised in property, plant and equipment of $58.6 million related to stripping cost depreciation at Centinela, Los Pelambres and Antucoya. In 
2016 $64.8 million related to stripping cost depreciation at Los Pelambres and Centinela, and $22.8 million related to Antucoya depreciation capitalized during 
the commissioning period. 

The restatement of the opening cost and accumulated depreciation balances as at 1 January 2016 represents reclassifications between asset categories  
and also an adjustment in respect of fully depreciated asset balances.  

antofagasta.co.uk 

161 
161

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

INVESTMENTS IN SUBSIDIARIES 

16 
The subsidiaries of the Group, the percentage of equity owned and the main country of operation are set out below. These interests are consolidated within 
these financial statements. 

Country of operations  

Registered office  

Nature of business 

Economic interest 

Direct subsidiaries of the Parent Company 

Antofagasta Railway Company plc 

Andes Trust Limited (The) 

Chilean Northern Mines Limited 
Andes Re Limited 
Indirect subsidiaries of the Parent Company 

Minera Los Pelambres SCM 

Minera Centinela SCM 

Minera Antucoya SCM 

Minera Encuentro SCM 

Antofagasta Minerals SA 

Alfa Estates Limited 

Centinela Transmision SA 

Northern Minerals Investment (Jersey) Limited 

Northern Metals (UK) Limited 

Northern Minerals Holding Co 

Duluth Metals Limited 

Twin Metals (UK) Limited 

Twin Metals (USA) Inc 

Twin Metals Minnesota LLC 

Duluth Metals Holdings (USA) Inc 

Duluth Exploration (USA) Inc 

DMC LLC (Minnesota) 

DMC (USA) LLC (Delaware) 

DMC (USA) Corporation 

Antofagasta Investment Company Limited 

Minprop Limited 

Antofagasta Services Limited 

Antofagasta Energy Jersey PCC 

Antofagasta Minerals Australia Pty Limited 

Antofagasta Minerals Adelaide Pty Limited 

Antofagasta Minerals Perth Pty Limited 

Minera Anaconda Peru 

Los Pelambres Holding Company Limited 

Los Pelambres Investment Company Limited 

Lamborn Land Co 

Anaconda South America Inc 

Country of 
incorporation 

UK 

UK 

UK 
Bermuda 

Chile 

Chile 

Chile 

Chile 

Chile 

Jersey 

Chile 

Jersey 

UK 

USA 

Canada 

UK 

USA 

USA 

USA 

USA 

USA 

USA 

USA 

Jersey 

Jersey 

UK 

Jersey 

Australia 

Australia 

Australia 

Peru 

Jersey 

Jersey 

USA 

USA 

Chile 

UK 

Chile 
Bermuda 

Chile 

Chile 

Chile 

Chile 

Chile 

Jersey 

Chile 

Jersey 

UK 

USA 

Canada 

UK 

USA 

USA 

USA 

USA 

USA 

USA 

USA 

Jersey 

Jersey 

UK 

Jersey 

Australia 

Australia 

Australia 

Peru 

Jersey 

Jersey 

Chile 

USA 

El Tesoro (SPV Bermuda) Limited 

Bermuda 

Bermuda 

Morrisville Holdings Co 

Antofagasta Minerals Canada 

Andes Investments Company (Jersey) Limited 

Bolivian Rail Investors Co Inc 

Blue Ocean Overseas Inc 

Inversiones Ferrobol Limitada 

Inversiones Los Pelambres Chile Ltda. 

Equatorial Resources SpA 

Minera Santa Margarita de Astillas SCM 

BVI 

Canada 

Jersey 

USA 

BVI 

Bolivia 

Chile 

Chile 

Chile 

BVI 

Canada 

Jersey 

USA 

BVI 

Bolivia 

Chile 

Chile 

Chile 

162 
162

Antofagasta Annual Report 2017 

1 

1 

1 
4 

2 

2 

2 

2 

2 

3 

2 

3 

1 

5 

7 

1 

6 

6 

13 

14 

13 

13 

13 

3 

3 

1 

3 

9 

9 

9 

10 

3 

3 

5 

15 

9 

8 

9 

3 

5 

8 

11 

2 

2 

2 

Railway 

Investment 

Investment 
Insurance 

Mining 

Mining 

Mining 

Mining 

Mining 

Investment 

Energy 

Investment 

Investment 

Investment 

Investment 

Investment 

Investment 

Mining 

Investment 

Investment 

Investment 

Investment 

Investment 

Investment 

Mining 

Group services 

Investment 

Mining 

Mining 

Mining 

Mining 

Investment 

Investment 

Investment 

Investment 

Investment 

Investment 

Mining 

Investment 

Investment 

Investment 

Investment 

Investment 

Investment 

Mining 

100% 

100% 

100% 
100% 

60% 

70% 

70% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

75.5% 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
Minera Penacho Blanco SA 

Michilla Costa SpA 

Minera Mulpun Limitada 

Fundación Minera Los Pelambres 

Inversiones Punta de Rieles Limitada 

Ferrocarril Antofagasta a Bolivia  
(Permanent Establishment) 

Inversiones Chilean Northern Mines Ltda 

The Andes Trust Chile SA 

Forestal SA 

Servicios de Transportes Integrados Limitada 

Inversiones Train Limitada 

Servicios Logisticos Capricornio Limitada 

Embarcadores Limitada 

FCAB Ingenieria y Servicios Limitada 

Emisa Antofagasta SA 

Registered offices: 

Country of 
incorporation 

Country of operations  

Registered office  

Nature of business 

Economic interest 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

Chile 

2 

2 

2 

2 

12 

12 

12 

12 

12 

12 

12 

12 

12 

12 

12 

Mining 

Logistics 

Mining 

Community 
development 

Investment 

Railway 

Investment 

Investment 

Forestry 

Road transport 

Investment 

Transport 

Transport 

Transport 

Transport 

66.6% 

99.9% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

1 
2 
3 
4 
5 
6 
7 
8 

Cleveland House, 33 King Street, London, SW1Y 6RJ, United Kingdom 
Avenida Apoquindo N° 4001, Piso 18, Las Condes, Santiago, Chile 
22 Grenville Street, St Helier, Jersey, JE4 8PX3 
Crawford House, 50 Cedar Avenue, Hamilton HM 11, Bermuda 
1209 Orange Street, Wilmington, DE 19801, USA 
6040 Earle Brown Drive, 480 Brooklyn Center, MN 55430,USA 
161 Bay Street, Suite 4320, Toronto, Ontario, M5J 2S1, Canada  
PO Box 958, Road Town, Tortola VG1110, British Virgin Islands 

Riparian Plaza, Level 28, 71 Eagle Street, Brisbane, Qld 4001, Australia 

9 
10  Av. Paseo de la Republica Nº 3245 Piso 3, Lima, Peru 
11  Avenida 16 de Julio N° 1440, piso 19 oficina 1905, La Paz, Bolivia 
12  Simon Bolivar 255, Antofagasta, Chile 
13  6041 Earle Brown Drive, 480 Brooklyn Center, MN 55430, USA 
14 
15  2711 Centerville Rd, Suite 400, Wilmington, DE 19808, USA 

1010 Dale Street N, St Paul, MN 55117-5603 USA 

With the exception of the Antofagasta Railway Company plc, all of the above Group companies have only one class of ordinary share capital in issue. The 
Antofagasta Railway Company plc has ordinary and preference share capital in issue, with the ordinary share capital representing 76% of the Company’s 
total share capital, and the preference share capital representing 24% of the company’s total share capital; Antofagasta plc holds 100% of both the ordinary 
and preference share capital of the Antofagasta Railway Company plc. 

The proportion of the voting rights is proportional with the economic interest for the companies listed above. 

antofagasta.co.uk 

163 
163

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

17 

INVESTMENT IN ASSOCIATES AND JOINT VENTURES 

Balance at the beginning of the year 

Obligations on behalf of JV 

Capital contribution 

Capital decrease and others 

Adjustment to purchase price 

Disposal 

Share of net profit/(loss) before tax 

Share of tax 

Share of income/(loss) from associates 

Dividends received 

Balance at the end of the year 

Obligations on behalf of JV 

Share of income/(loss) after tax 

Net share of results from associates and joint ventures 

Inversiones 
Hornitos 
2017 
$m 

71.3 

– 

– 

– 

– 

– 

14.3 

(3.7)

10.6 

(21.8)

60.1 

– 

10.6 

10.6 

ATI 
2017 
$m 

6.5 

– 

– 

– 

– 

– 

(1.5)

0.3 

(1.2)

– 

5.3 

– 

(1.2)

(1.2)

El Arrayan 
2017 
$m 

22.0 

– 

– 

– 

– 

– 

0.1 

(0.1)

– 

– 

22.0 

– 

– 

– 

Balance at the beginning of the year 

Obligations on behalf of JV 

Capital contribution 

Capital decrease and others 

Adjustment to Purchase price 

Gains/(losses) in fair value of cash flow hedges 
deferred in reserves of associates 

Provision against carrying value of assets 

Share of net profit/(loss) before tax 

Share of tax 

Share of income/(loss) from associates 

Dividends received 

Balance at the end of the year 

Obligations on behalf of JV 

Inversiones 
Hornitos 
2016 
$m 

75.1 

– 

– 

– 

– 

– 

– 

8.9 

(2.5)

6.4 

(10.2)

71.3 

– 

ATI 
2016 
$m 

8.2 

– 

– 

– 

– 

– 

– 

(1.9)

0.2 

(1.7)

– 

6.5 

– 

El Arrayan 
2016 
$m 

23.2 

– 

– 

(0.9)

– 

0.3 

– 

(1.0)

0.4 

(0.6)

– 

22.0 

– 

Alto 
Maipo 
2016 
$m 

33.5 

– 

36.0 

– 

– 

4.1 

(74.0)

0.4 

– 

0.4 

– 

– 

– 

Minera 
Zaldívar 
 2017 
$m 

983.6 

– 

– 

– 

– 

– 

77.5 

(19.0)

58.5 

(60.0)

982.1 

– 

58.5 

58.5 

Minera 
Zaldívar 
2016 
$m 

998.8 

– 

– 

0.3 

(45.0)

– 

– 

41.9 

(12.4)

29.5 

– 

983.6 

– 

Energía 
Andina  
2017  
$m 

Tethyan 
Copper  
2017  
$m 

Total 
2017 
$m 

3.2 

– 

0.1 

– 

– 

(3.1) 

– 

– 

– 

– 

0.2 

– 

– 

1,086.6 

(3.1) 

9.3 

– 

– 

– 

(8.2) 

– 

(8.2) 

– 

– 

(3.1)

9.4 

– 

– 

(3.1)

82.2 

(22.5)

59.7 

(81.8)

1,069.7 

(2.0) 

(2.0)

– 

– 

(8.2) 

(8.2) 

59.7 

59.7 

Energía 
Andina  
2016  
$m 

10.3 

– 

1.0 

– 

– 

– 

(8.1) 

– 

– 

– 

– 

3.2 

– 

Tethyan 
Copper  
2016  
$m 

Total 
2016 
$m 

– 

1,149.1 

(2.5) 

10.0 

– 

– 

– 

– 

(10.6) 

– 

(10.6) 

– 

– 

(2.5)

47.0 

(0.6)

(45.0)

4.4 

(82.1)

36.4 

(13.0)

23.4 

(10.2)

1,086.6 

(3.1) 

(3.1)

Share of income/(loss) before tax 

6.4 

(1.7)

(0.6)

0.4 

29.5 

– 

(10.6) 

23.4 

Provision against carrying value of assets 
(exceptional items) 

Other comprehensive income of associates to profit 
for the year (exceptional items) 

Net share of results from associates and joint 
ventures 

– 

– 

– 

– 

– 

– 

(74.0)

(52.6)

– 

– 

(8.1) 

– 

– 

– 

(82.1)

(52.6)

6.4 

(1.7)

(0.6)

(126.2)

29.5 

(8.1) 

(10.6) 

(111.3)

164 
164

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
The investments which are included in the $1,067.7 million balances at 31 December 2017 are set out below: 

Investment in associates 

(i)  The Group’s 40% interest in Inversiones Hornitos SA, which owns the 165MW Hornitos thermoelectric power plant operating in Mejillones, in Chile’s 

Antofagasta Region. The Group has a 16-year power purchase agreement with Inversiones Hornitos SA for the provision of up to 40MW of electricity  
for Centinela. 

(ii)  The Group’s 30% interest in ATI, which operates a concession to manage installations in the port of Antofagasta. 

(iii)  The Group´s 30% interest in El Arrayan, which operates a 115MW wind-farm project, The Group has a 20-year power purchase agreement with  

El Arrayan for the provision of up to 40MW of electricity for Los Pelambres. 

Investment in joint ventures 
(iv)  The Group’s 50% interest in Minera Zaldívar SpA (“Zaldívar”), an open-pit, heap-leach copper mine located in Northern Chile, which produces 

approximately 100,000 tonnes of copper cathodes annually.  

(v)  The Group’s 50.1% interest in Energia Andina, which is a joint venture with Origin Geothermal Chile Limitada for the evaluation and development  

of potential sources of geothermal and solar energy.  

In February 2017 the disposal of Energia Andina’s interest in the Javiera solar power plant was agreed. The terms of the sale agreement indicated a 
recoverable value for the interest in Javiera which was $8.1 million below the carrying value, and accordingly an impairment provision for this amount 
was recognised in the 2016 year-end results. The disposal completed in May 2017 with no further gain or loss arising. 

(vi)  The Group’s 50% interest in Tethyan Copper Company Limited (“Tethyan”), which is a joint venture with Barrick Gold Corporation over Tethyan’s 

mineral interest in Pakistan, which is now subject to international arbitration. As the net carrying value of the interest in Tethyan is negative it is  
included within non-current liabilities, as the Group is liable for its share of the joint venture’s obligations. 

Summarised financial information for the associates is as follows: 

Cash and cash equivalents 

Current assets 

Non-current assets 

Current liabilities 

Non-current liabilities 

Revenue 

Profit/(loss) from continuing operations 

Other comprehensive income 

Total comprehensive income/(expense) 

Cash and cash equivalents 

Current assets 

Non-current assets 

Current liabilities 

Non-current liabilities 

Revenue 

Profit/(loss) from continuing operations 

Profit/(loss) after tax from continuing and discontinued operations 

Other comprehensive income 

Total comprehensive income/(expense) 

Inversiones Hornitos 
2016 
$m 

16.0 

37.7 

294.0 

(25.7)

(163.0)

136.2 

16.0 

– 

– 

16.0 

Inversiones 
Hornitos 
2017 
$m 

12.6 

37.1 

283.5 

(37.2)

(161.3)

164.7 

26.5 

– 

26.5 

ATI 
2016 
$m 

0.4 

13.5 

138.5 

(28.7)

(104.3)

46.1 

(5.4)

– 

– 

(5.4)

ATI  
2017  
$m 

0.8 

11.7 

127.6 

(31.5) 

(92.6) 

41.8 

(3.9) 

– 

(3.9) 

El Arrayan  
2016  
$m 

3.1 

14.0 

248.7 

(13.3) 

(191.3) 

29.1 

(2.0) 

– 

– 

(2.0) 

El Arrayan 
2017 
$m 

6.0 

9.0 

244.0 

(12.0)

(182.0)

33.0 

0.1 

– 

0.1 

Alto 
Maipo 
2016 
$m 

38.9 

56.4 

1,149.1 

(115.5)

(1,070.2)

– 

(0.7)

– 

10.3 

9.6 

Total 
2017 
$m 

19.4 

57.8 

655.1 

(80.7)

(435.9)

239.5 

24.1 

– 

24.1 

Total 
2016 
$m 

58.4 

121.6 

1,830.3 

(183.2)

(1,528.8)

211.4 

7.9 

– 

10.3 

18.2 

antofagasta.co.uk 

165 
165

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

INVESTMENT IN ASSOCIATES AND JOINT VENTURES CONTINUED 

17 
Summarised financial information for the joint ventures is as follows: 

Cash and cash equivalent 

Current assets 

Non-current assets 

Current liabilities 

Non-current liabilities 

Revenue 

Profit/(loss) after tax from continuing and discontinued operations 

Other comprehensive income 

Total comprehensive income/(expense) 

Cash and cash equivalent 

Current assets 

Non-current assets 

Current liabilities 

Non-current liabilities 

Revenue 

Profit/(loss) after tax from continuing and discontinued operations 

Other comprehensive income 

Total comprehensive income/(expense) 

Minera 
Zaldívar 
2017 
$m 

75.6 

574.3 

1,569.7 

(109.5)

(114.6)

654.7 

116.9 

– 

116.9 

Minera 
Zaldívar 
2016 
$m 

101.7 

493.7 

1,592.0 

(107.6)

(112.8)

517.7 

59.0 

– 

59.0 

Energía Andina  
2017  
$m 

Tethyan Copper  
2017  
$m 

0.7  

0.1  

26.9  

(0.6) 

(26.9) 

– 

(0.5) 

– 

(0.5) 

3.2 

– 

0.2 

(7.1) 

(0.1) 

– 

(16.3) 

– 

(16.3) 

Energía Andina  
2016  
$m 

Tethyan Copper  
2016  
$m 

0.3 

– 

11.4 

– 

– 

– 

(10.8) 

– 

(10.8) 

1.6 

0.1 

0.2 

(7.8) 

(0.2) 

– 

(21.1) 

– 

(21.1) 

Total 
2017 
$m 

75.9 

572.7 

1,570.9 

(116.2)

(140.7)

649.0 

98.6 

– 

98.6 

Total 
2016 
$m 

103.6 

493.8 

1,603.6 

(115.4)

(113.0)

517.7 

27.1 

– 

27.1 

Notes to the summarised financial information 
(i)  The summarised financial information is based on the amounts included in the IFRS financial statements of the associate or joint venture (ie. 100%  

of the results or balances of the associate or joint venture, rather than the Group’s proportionate share), after the Group’s fair value adjustments. 

18  AVAILABLE-FOR-SALE INVESTMENTS 

Balance at the beginning of the year 

Movement in fair value 

Foreign currency exchange differences 

Balance at the end of the year 

2017 
$m 

4.6 

1.4 

0.5 

6.5 

2016 
$m 

2.7 

1.7 

0.2 

4.6 

Available-for-sale investments represent those investments which are not subsidiaries, associates or joint ventures and are not held for trading purposes.  
The fair value of all equity investments are based on quoted market prices. 

166 
166

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
19 

INVENTORIES 

Current: 

Raw materials and consumables 

Work in progress 

Finished goods 

Non-current: 

Work in progress 

Total 

2017 
$m 

198.3 

218.7 

66.6 

483.6 

111.1 

111.1 

594.7 

2016 
$m 

189.4 

141.9 

62.1 

393.4 

157.3 

157.3 

550.7 

No adjustment of Net Realisable Value (NRV) has been recognised at 31 December 2017 (2016 – nil). 

Non-current work in progress represents inventory expected to be processed more than 12 months after the balance sheet date. 

20  TRADE AND OTHER RECEIVABLES 
Trade and other receivables do not generally carry any interest, are principally short term in nature and are normally stated at their nominal value less  
any impairment. 

Trade debtors 

Other debtors 

Due in one year 

Due after one year 

2017 
$m 

588.8 

150.4 

739.2 

2016 
$m 

606.1 

129.4 

735.5 

2017 
$m 

– 

67.0 

67.0 

2016  
$m 

–   

66.7   

66.7   

2017 
$m 

588.8 

217.4 

806.2 

Total 

2016 
$m 

606.1 

196.1 

802.2 

The largest balances of trade receivables are held with equity participants in the key mining projects. Many other significant trade receivables are secured  
by letters of credit or other forms of security. The average credit period given on sale of goods and rendering of service is 45 days (2016 – 60 days). There  
is no material element which is interest-bearing. Trade debtors include mark-to-market adjustments in respect of provisionally priced sales of copper and 
molybdenum concentrates which remain open as to final pricing. Where these have resulted in credit balances, they have been reclassified to trade creditors. 
Other debtors are mainly related to interest receivables and VAT receivable. The other debtors due after one year are mainly related to employee loans. 

Movements in the provision for doubtful debts were as follows: 

Balance at the beginning of the year 

Charge for the year 

Amounts written off 

Disposal of subsidiaries 

Unused amounts reversed 

Foreign currency exchange difference 

Balance at the end of the year 

The ageing analysis of the trade and other receivables balance is as follows: 

2017 
$m 

(1.1)

(1.1)

– 

– 

– 

(0.1)

(2.3)

2017 

2016 

Neither 
past due 
nor impaired 
$m 

780.2 

749.1 

Past due but not impaired 

Up to 
3 months 
past due 
$m 

17.4 

39.4 

3-6 months  
past due  
$m 

0.4 

– 

More than 
6 months 
past due 
$m 

8.2 

13.7 

2016 
$m 

(1.0)

(0.1)

– 

– 

– 

– 

(1.1)

Total 
$m 

806.2 

802.2 

With respect to the trade receivables that are neither past due nor impaired, there are no indications that the debtors will not meet their payment obligations. 
The carrying value of the trade receivables recorded in the financial statements represents the Group’s maximum exposure to credit risk. The Group does not 
hold any collateral as security. 

antofagasta.co.uk 

167 
167

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

21  CASH, CASH EQUIVALENTS AND LIQUID INVESTMENTS 
The fair value of cash, cash equivalents and liquid investments is not materially different from the carrying values presented. The credit risk on cash and cash 
equivalents is limited because the counterparties are banks with high credit ratings assigned by international credit-rating agencies. 

Cash, cash equivalents and liquid investments comprised: 

Cash and cash equivalents 

Liquid investments 

At 31 December 2017 and 2016 there is no cash which is subject to restriction. 

The currency exposure of cash, cash equivalents and liquid investments was as follows: 

US dollars 

Chilean pesos 

Sterling 

Other 

The credit quality of cash, cash equivalents and liquid investments are as follow: 

Current account bank deposits and cash at bank 

AAA 

AA+ 

AA 

AA- 

A+ 

A 

Total 
Cash at Bank1 

Total cash, cash equivalents and liquid investments 

1.  Cash at bank is held with investment grade financial institutions.  

2017  
$m 

1,083.6 

1,168.7 

2,252.3 

2016 
$m 

716.3 

1,332.2 

2,048.5 

2017 
$m 

2,095.4 

153.1 

0.8 

3.0 

2016 
$m 

1,939.0 

95.8 

1.2 

12.5 

2,252.3 

2,048.5 

2017  
$m 

2016 
$m 

1,260.6 

1,230.3 

8.2 

34.4 

47.0 

108.8 

10.5 

1,469.5 

782.8 

2,252.3 

– 

18.2 

149.1 

262.8 

168.0 

1,828.4 

220.1 

2,048.5 

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Antofagasta plc Annual Report 2017 
 
 
 
 
22  BORROWINGS 

A)  Analysis by type of borrowing 
Borrowings may be analysed by business segment and type as follows: 

Los Pelambres 
–  Corporate loans 
–  Short-term loan 
–  Finance leases 
Centinela 
–  Corporate loans 
–  Shareholder loan (subordinated debt) 
–  Short-term loan 
Antucoya 
–  Project financing (senior debt) 
–  Shareholder loan (subordinated debt) 
–  Short-term loan 
–  Finance leases 
Corporate and other items 
–  Long-term loan 
–  Finance leases 
Railway and other transport services 
–  Long-term loans 
–  Finance leases 
Preference shares 

Total 

Notes 

2017 
$m 

2016 
$m 

(i) 

(ii) 

(iii) 

(iv) 

(v) 

(vi) 

(vii) 

(viii) 

(ix) 

(x) 

(xi) 

(xii) 

(xiii) 

(xiv) 

– 

(242.0)

(44.9)

(596.2)

(194.2)

(200.0)

(423.9)

(347.5)

(30.0)

(42.6)

(497.4)

(26.6)

(59.6)

(0.8)

(3.0)

(17.5)

(312.0)

(62.2)

(743.8)

(183.6)

(200.0)

(608.7)

(330.4)

(30.0)

(16.2)

(497.2)

(25.1)

(89.4)

(1.6)

(2.5)

(2,708.7)

(3,120.2)

(i) 

(ii) 

The short-term loan (PAE) is US dollar denominated, comprising a working capital loan for an average period of 1 year and has an interest rate of LIBOR six-month rate plus  
a margin of between 0.16% – 0.17%. 

Finance leases at Los Pelambres are US dollar denominated, with an interest of LIBOR six-month rate plus 1.7% with a remaining duration of 5 years.  

(iii)  Senior debt at Centinela represents US dollar denominated syndicated loans. These loans are for a remaining term of 2.7 years and have an interest rate of LIBOR six-month 
rate plus 1.0%. The loans are subject to financial covenants which require that specified net debt to EBITDA and EBITDA to finance expense ratios are maintained. The Group 
has used interest rate swaps to swap some of the floating rate interest for fixed rate interest. At 31 December 2017 the current notional amount hedged was $35.0 million.  

(iv)  The long-term subordinated debt is US dollar denominated, provided to Centinela by Marubeni Corporation with a duration of 5 years and a weighted average interest rate  

of LIBOR six-month rate plus 4.25%. Long-term subordinated debt provided by Group companies to Centinela has been eliminated on consolidation. 

(v) 

The short-term loan (PAE) is US dollar denominated, comprising a range of working capital loans for an average period of 1 year and with an interest rate of LIBOR six-month 
rate plus 0.19%. 

(vi)  Senior debt at Antucoya represents US dollar denominated syndicated loans. These loans are for a remaining term of 7.5 years and have an interest rate of LIBOR six-month 

rate plus 2.49%.  

(vii)  The long-term subordinated debt is US dollar denominated, provided to Antucoya by Marubeni Corporate with a duration of 8 years and an interest rate of LIBOR six-month 

rate plus 3.65%. Long-term subordinated debt provided by Group companies to Antucoya has been eliminated on consolidation. 

(viii)  The short-term loan is US dollar denominated, comprising a working capital loan for an average period of 1 year and has an interest rate of LIBOR six-month rate plus 0.19%. 

(ix)  Finance leases at Antucoya are US dollar denominated, with a maximum remaining duration of 7 years and with an average interest rate of approximately LIBOR six-month 

rate plus 1.41%. 

(x) 

The long-term loan at Corporate (Antofagasta plc) of $500.0 million has an interest rate of LIBOR six-month rate plus 1.5%, and has a duration of 5 years. 

(xi)  Finance leases at Corporate and other items are denominated in Unidades de Fomento (i.e. inflation-linked Chilean pesos) and have a remaining duration of 11 years and are  

at fixed rates with an average interest rate of 5.29%. 

(xii)  Long-term loans at Railway and other transport services are US dollar denominated, with a duration of 2 years and an interest rate of LIBOR six-month rate plus 0.48%. The 
Group has used interest rate swaps to swap the floating rate interest for fixed rate interest. At 31 December 2017 the current notional amount hedged was $60.0 million.  

(xiii)  Finance leases at Railway and other transport services are Chilean peso denominated, with a maximum remaining duration of 1.5 years and with a fixed interest rate of 5.9%. 

(xiv)  The preference shares are sterling-denominated and issued by Antofagasta plc. There were 2 million shares of £1 each authorised, issued and fully paid at 31 December 2017. 

The preference shares are non-redeemable and are entitled to a fixed cumulative dividend of 5% per annum. On winding up they are entitled to repayment and any arrears  
of dividend in priority to ordinary shareholders, but are not entitled to participate further in any surplus. Each preference share carries 100 votes in any general meeting of  
the Company. 

antofagasta.co.uk 

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FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

22  BORROWINGS CONTINUED 

B)  Analysis of borrowings by currency 
The exposure of the Group’s borrowings to currency risk is as follows: 

 At 31 December 2017 

Corporate loans 

Other loans (including short-term loans) 

Finance leases 

Preference shares 

 At 31 December 2016 

Corporate loans 

Other loans (including short-term loans) 

Finance leases 

Preference shares 

C)  Analysis of borrowings by type of interest rate 
The exposure of the Group’s borrowings to interest rate risk is as follows: 

 At 31 December 2017 

Corporate loans 

Other loans (including short-term loans) 

Finance leases 

Preference shares 

 At 31 December 2016 

Corporate loans 

Other loans (including short-term loans) 

Finance leases 

Preference shares 

Chilean 
Pesos 
$m 

– 

– 

(27.4)

– 

(27.4)

Chilean 
Pesos 
$m 

– 

– 

(26.8)

– 

(26.8)

Sterling 
$m 

Other  
$m 

– 

– 

– 

(3.0)

(3.0)

Sterling 
$m 

– 

– 

– 

(2.5)

(2.5)

– 

– 

– 

– 

– 

Other  
$m 

– 

– 

– 

– 

– 

Fixed  
$m 

– 

– 

(27.4) 

(3.0) 

(30.4) 

Fixed  
$m 

– 

– 

(29.1) 

(2.5) 

(31.6) 

US dollars 
 $m 

(1,577.1) 

(1,013.7) 

(87.5) 

– 

2017 
Total 
$m 

(1,577.1)

(1,013.7)

(114.9)

(3.0)

(2,678.3) 

(2,708.7)

US dollars  
$m 

(1,956.6) 

(1,056.0) 

(78.3) 

– 

2016 
Total 
$m 

(1,956.6)

(1,056.0)

(105.1)

(2.5)

(3,090.9) 

(3,120.2)

Floating  
$m 

(1,577.1) 

(1,013.7) 

(87.5) 

– 

2017 
Total 
$m 

(1,577.1)

(1,013.7)

(114.9)

(3.0)

(2,678.3) 

(2,708.7)

Floating  
$m 

(1,956.6) 

(1,056.0) 

(76.0) 

– 

2016 
Total 
$m 

(1,956.6)

(1,056.0)

(105.1)

(2.5)

(3,088.6) 

(3,120.2)

The above floating rate corporate loans include the project financing at Centinela and long-term loans at the Railway and other transport services segment, 
where the Group has used interest rate swaps to swap the floating rate interest for fixed rate interest. At 31 December 2017 the current notional amount 
hedged of the senior debt at Centinela was $35.0 million (2016 – $70.0 million) and the current notional amount hedged of the long-term loans at the Railway 
and other transport services segment was $60.0 million (2016 – $90.0 million). 

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D)  Maturity profile 
The maturity profile of the Group’s borrowings is as follows: 

 At 31 December 2017 

Corporate loans 

Other loans  

Finance leases 

Preference shares 

 At 31 December 2016 

Corporate loans 

Other loans  

Finance leases 

Preference shares 

Within 
1 year 
$m 

(260.2)

(472.0)

(21.4)

– 

(753.6)

Within 
1 year 
$m 

(242.4)

(542.0)

(22.7)

– 

Between 
1-2 years 
$m 

(230.9)

–

(26.9)

– 

(257.8)

Between 
1-2 years 
$m 

(252.6)

– 

(18.7)

– 

Between  
2-5 years  
$m 

(471.6) 

– 

(45.4) 

– 

After 
5 years 
$m 

(614.4)

(541.7)

(21.2)

(3.0)

2017 
Total 
$m 

(1,577.1)

(1,013.7)

(114.9)

(3.0)

(517.0) 

(1,180.3)

(2,708.7)

Between  
2-5 years  
$m 

(711.5) 

– 

(32.7) 

– 

After 
5 years 
$m 

(750.1)

(514.0)

(31.0)

(2.5)

2016 
Total 
$m 

(1,956.6)

(1,056.0)

(105.1)

(2.5)

(836.8)

(271.2)

(744.3) 

(1,267.9)

(3,120.2)

The amounts included above for finance leases are based on the present value of minimum lease payments. 

The total minimum lease payments for these finance leases may be analysed as follows: 

Within 1 year 

Between 1-2 years 

Between 2-5 years 

After 5 years 

Total minimum lease payment 

Less amounts representing finance charges 

Present value of minimum lease payment 

All leases are on a fixed payment basis and no arrangements have been entered into for contingent rental payments. 

2017 
$m 

(24.7)

(30.0)

(50.6)

(23.4)

(128.7)

13.8 

(114.9)

2016 
$m 

(28.9)

(20.1)

(39.8)

(33.6)

(122.4)

17.3 

(105.1)

antofagasta.co.uk 

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FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

23  TRADE AND OTHER PAYABLES 

Trade creditors 

Other creditors and accruals 

Due in one year 

Due after one year 

2017 
$m 

(515.1)

(93.9)

(609.0)

2016 
$m 

(422.7)

(172.5)

(595.2)

2017 
$m 

– 

(7.4)

(7.4)

2016  
$m 

–   

(7.9)  

(7.9)  

2017  
$m 

(515.1) 

(101.3) 

(616.4) 

Total 

2016 
$m 

(422.7)

(180.4)

(603.1)

Trade creditors and accruals principally comprise amounts outstanding for trade purchases and ongoing costs. Other creditors are mainly related to property 
plant and equipment payables, finance interest and employee retentions. 

The average credit period taken for trade purchases is 30 days (2016 – 28 days). 

At 31 December 2017, the other creditors include $9.1 million (2016 – $0.6 million) relating to prepayments. 

24  FINANCIAL INSTRUMENTS AND FINANCIAL RISK MANAGEMENT 

A)  Categories of financial instruments 
The Group’s financial instruments, grouped according to the categories defined in IAS 39 “Financial instruments: Recognition and Measurement”, are  
as follows: 

Financial assets 

Derivatives in designated hedge accounting relationships 

Available-for-sale investments 

Loans and receivables at amortised cost (including cash and cash equivalents) 

Fair value through profit and loss (liquid investments and mark-to-market debtors) 

Financial liabilities 

Derivatives in designated hedge accounting relationships 

Financial liabilities measured at amortised cost 

Fair value through profit and loss (mark-to-market creditors) 

B)  Fair value of financial instruments 
The fair values of financial assets and financial liabilities are determined as follows: 

2017  
$m 

0.3 

6.5 

2016 
$m 

2.4 

4.6 

1,806.3 

1,252.2 

1,475.2 

1,375.5 

(7.1) 

(2.5)

(3,325.1) 

(3,720.3)

– 

(266.9) 

(3.0)

(868.1)

–  the fair values of financial assets and financial liabilities with standard terms and conditions and traded on active liquid markets are determined with 

reference to quoted market prices; 

–  the fair values of other financial assets and financial liabilities (excluding derivative instruments) are determined in accordance with generally accepted 

pricing models based on discounted cash flow analysis using prices from observable current market transactions; and 

–  the fair values of derivative instruments are calculated using quoted prices. Where such prices are not available, use is made of discounted cash flow 

analysis based on the applicable yield curve for the duration of the instruments for non-option derivatives, and option pricing models for option derivatives. 

The fair value of each category of financial asset and liability is not materially different from the carrying values presented for either 2017 or 2016. 

Financial assets and liabilities measured at fair value through profit and loss are designated as such upon initial recognition. 

The following table provides an analysis of the financial instruments that are measured subsequent to initial recognition at fair value, grouped into levels 1 to 3 
based on the degree to which the fair value is observable: 

–  level 1 fair value measurements are those derived from quoted prices (unadjusted) in active markets for identical assets or liabilities; 

–  level 2 fair value measurements are those derived from inputs other than quoted prices included within level 1 that are observable for the asset or liability, 

either directly (i.e. as prices) or indirectly (i.e. derived from prices); and 

–  level 3 fair value measurements are those derived from valuation techniques that include inputs for the asset or liability that are not based on observable 

market data (unobservable inputs). 

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Financial assets 

Derivatives in designated hedge accounting relationships 

Available-for-sale investments 

Debtors mark-to-market 

Fair value through profit and loss 

Financial liabilities 

Derivatives in designated hedge accounting relationships 

Creditors mark-to-market 

Level 1 
$m 

– 

6.5 

– 

1,168.7 

– 

– 

1,175.2 

Level 2 
$m 

0.3 

– 

83.5 

– 

(7.1)

– 

76.7 

Level 3 
$m 

– 

– 

– 

– 

– 

– 

– 

Total 
2017 
$m 

0.3 

6.5 

83.5 

Total 
2016 
$m 

2.4 

4.6 

43.3 

1,168.7 

1,332.2 

(7.1)

– 

(2.5)

(3.0)

1,251.9 

1,377.0 

There were no transfers between level 1 and 2 during the year. 

C)  Financial risk management 
The Group’s activities expose it to a variety of financial risks: market risk (including commodity price risk, currency risk, interest rate risk and other price risk), 
credit risk and liquidity risk. The Group uses derivative financial instruments, in general to reduce exposure to commodity price, foreign exchange and interest 
rate movements. The Group does not use such derivative instruments for speculative trading purposes. 

The Board of Directors is responsible for overseeing the Group’s risk management framework. The Audit and Risk Committee assists the Board with  
its review of the effectiveness of the risk management process, and monitoring of key risks and mitigations. Internal Audit undertakes both regular and  
ad hoc reviews of risk management controls and procedures, the results of which are reported to the Audit and Risk Committee. 

(I)  Commodity price risk 
The Group generally sells its copper and molybdenum concentrate and copper cathode output at prevailing market prices, subject to final pricing adjustments 
which normally range from one to four months after delivery to the customer, and it is therefore exposed to changes in market prices for copper and 
molybdenum both in respect of future sales and previous sales which remain open as to final pricing. In 2017, sales of copper and molybdenum concentrate 
and copper cathodes represented 89.3% of Group revenue and therefore revenues and earnings depend significantly on LME and realised copper prices. 

The Group uses futures and min-max options to manage its exposure to copper prices. These instruments may give rise to accounting volatility due to 
fluctuations in their fair value prior to the maturity of the instruments. Details of those copper and molybdenum concentrate sales and copper cathode  
sales which remain open as to final pricing are given in Note 6. Details of commodity rate derivatives entered into by the Group are given in Note 24(d). 

Commodity price sensitivity 
The sensitivity analysis below shows the impact of a movement in the copper price on the financial instruments held as at the reporting date. A movement  
in the copper forward price as at the reporting date will affect the final pricing adjustment to sales which remain open at that date, impacting the trade 
receivables balance and consequently the income statement. A movement in the copper forward price will also affect the valuation of commodity derivatives, 
impacting the hedging reserve in equity if the fair value movement relates to an effective designated cash flow hedge, and impacting the income statement if  
it does not. The calculation assumes that all other variables, such as currency rates, remain constant. 

–  If the copper forward price as at the reporting date had increased by 10 cents, profit attributable to the owners of the parent would have increased by  
$16.8 million (2016 – increase by $21.0 million) and hedging reserves in equity would have increased by nil (2016 – decrease less than $0.1 million). 

–  If the copper forward price as at the reporting date had decreased by 10 cents, profit attributable to the owners of the parent would have decreased by  

$16.9 million (2016 – decrease by $20.5 million) and hedging reserves in equity would have decreased by nil (2016 – increase less than $0.4 million). 

In addition, a movement in the average copper price during the year would impact revenue and earnings. A 10 cents change in the average copper  
price during the year would have affected profit attributable to the owners of the parent by $67.0 million (2016 – $69.4 million) and earnings per  
share by 6.8 cents (2016 – 7.0 cents), based on production volumes in 2017, without taking into account the effects of provisional pricing and hedging  
activity. A $1 change in the average molybdenum price for the year would have affected profit attributable to the owners of the parent by $9.8 million  
(2016 – $6.7 million), and earnings per share by 1.0 cents (2016 – 0.7 cents), based on production volumes in 2017, and without taking into account the 
effects of provisional pricing. A $100 change in the average gold price for the year would have affected profit attributable to the owners of the parent by  
$9.4 million (2016 – $12.2 million), and earnings per share by 1.0 cents (2016 – 1.2 cents), based on production volumes in 2017, and without taking into 
account the effects of provisional pricing. 

(II)  Currency risk 
The Group is exposed to a variety of currencies. The US dollar, however, is the currency in which the majority of the Group’s sales are denominated. 
Operating costs are influenced by the countries in which the Group’s operations are based (principally in Chile) as well as those currencies in which  
the costs of imported equipment and services are determined. After the US dollar, the Chilean peso is the most important currency influencing costs  
and to a lesser extent sales. 

Given the significance of the US dollar to the Group’s operations, this is the presentational currency of the Group for internal and external reporting. The  
US dollar is also the currency for borrowing and holding surplus cash, although a portion of this may be held in other currencies, notably Chilean pesos  
and Sterling, to meet short-term operating and capital commitments and dividend payments. 

antofagasta.co.uk 

173 
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FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

24  FINANCIAL INSTRUMENTS AND FINANCIAL RISK MANAGEMENT CONTINUED 
When considered appropriate, the Group uses forward exchange contracts and currency swaps to limit the effects of movements in exchange rates  
in foreign currency denominated assets and liabilities. The Group may also use these instruments to reduce currency exposure on future transactions  
and cash flows. Details of any exchange rate derivatives entered by the Group in the year are given in Note 24.d. 

The currency exposure of the Group’s cash, cash equivalents and liquid investments is given in Note 21, and the currency exposure of the Group’s 
borrowings is given in Note 22.b. The effects of exchange gains and losses included in the income statement are given in Note 9. Exchange differences  
on translation of the net assets of entities with a functional currency other than the US dollar are taken to the currency translation reserve and are disclosed 
in the Consolidated Statement of Changes in Equity on page 134. 

Currency sensitivity 
The sensitivity analysis below shows the impact of a movement in the US dollar/Chilean peso exchange rate on the financial instruments held as at the  
reporting date. 

The impact on profit or loss is as a result of the retranslation of monetary financial instruments (including cash, cash equivalents, liquid investments, trade 
receivables, trade payables and borrowings). The impact on equity is as a result of changes in the fair value of derivative instruments which are effective 
designated cash flow hedges, and changes in the fair value of available-for-sale equity investments. The calculation assumes that all other variables, such  
as interest rates, remain constant. 

If the US dollar had strengthened by 10% against the Chilean peso as at the reporting date, profit attributable to the owners of the parent would have 
decreased by $9.2 million (2016 – decrease of $1.3 million). If the US dollar had weakened by 10% against the Chilean peso as at the reporting date,  
profit attributable to the owners of the parent would have increased by $11.4 million (2016 – increase of $3.2 million). 

(III)  Interest rate risk 
The Group’s policy is generally to borrow and invest cash at floating rates. Fluctuations in interest rates may impact the Group’s net finance income or  
cost, and to a lesser extent the value of financial assets and liabilities. The Group occasionally uses interest rate swaps and collars to manage interest  
rate exposures on a portion of its existing borrowings. Details of any interest rate derivatives entered into by the Group are given in Note 24D.(i) 

Interest rate exposure of the Group’s borrowings is given in Note 22. 

Interest rate sensitivity 
The sensitivity analysis below shows the impact of a movement in interest rates in relation to the financial instruments held as at the reporting date. The 
impact on profit or loss reflects the impact on annual interest expense in respect of the floating rate borrowings held as at the reporting date, and the impact 
on annual interest income in respect of cash and cash equivalents held as at the reporting date. The impact on equity is as a result of changes in the fair 
value of derivative instruments which are effective designated cash flow hedges. The calculation assumes that all other variables, such as currency rates, 
remain constant. 

If the interest rate increased by 1%, based on the financial instruments held as at the reporting date, profit attributable to the owners of the parent would  
have decreased by $0.3 million (2016 – increase of $3.8 million) and hedging reserves in equity would have increased by $0.4 million (2016 – increase of  
$0.3 million). This does not include the effect on the income statement of changes in the fair value of the Group’s liquid investments relating to the underlying 
investments in fixed income instruments. 

(IV)  Other price risk 
The Group is exposed to equity price risk on its available-for-sale equity investments. 

Equity price sensitivity 
The sensitivity analysis below shows the impact of a movement in the equity values of the available-for-sale financial assets held as at the reporting date. 

If the value of the available-for-sale investments had increased by 10% as at the reporting date, equity would have increased by $0.7 million (2016 – increase  
of $0.5 million). There would have been no impact on the income statement. 

(V)  Cash flow risk 
The Group’s future cash flows depend on a number of factors, including commodity prices, production and sales levels, operating costs, capital expenditure 
levels and financial income and costs. Its cash flows are therefore subject to the exchange, interest rate and commodity price risks described above as well 
as operating factors and input costs. To reduce the risk of potential short-term disruptions to the supply of key inputs such as electricity and sulphuric acid, 
the Group enters into medium and long-term supply contracts to help ensure continuity of supply. Long-term electricity supply contracts are in place at each 
of the Group’s mines, in most cases linking the cost of electricity under the contract to the current cost of electricity on the Chilean grids or the generation 
cost of the supplier. The Group seeks to lock in supply of sulphuric acid for future periods of a year or longer, with contract prices agreed in the latter part  
of the year, to be applied to purchases of acid in the following year. Further information on production and sales levels and operating costs are given in the 
Operating review on pages 28 to 43. 

(VI)  Credit risk 
Credit risk arises from trade and other receivables, cash, cash equivalents, liquid investments and derivative financial instruments. The Group’s credit risk  
is primarily to trade receivables. The credit risk on cash, cash equivalents and liquid investments and on derivative financial instruments is limited as the 
counterparties are financial institutions with high credit ratings assigned by international credit agencies. 

The largest balances of trade receivables are held with equity participants in the key mining projects. Many other significant trade receivables are secured by 
letters of credit or other forms of security. All customers are subject to credit review procedures, including the use of external credit ratings where available. 
Credit is provided only within set limits, which are regularly reviewed. The main customers are recurrent with a good credit history during the years while 
they have been customers. 

Outstanding receivable balances are monitored on an ongoing basis. 

174 
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The carrying value of financial assets recorded in the financial statements represents the maximum exposure to credit risk. The amounts presented in the 
balance sheet are net of allowances for any doubtful receivables (Note 20). 

(vii)  Liquidity risk 
The Group manages liquidity risk by maintaining adequate cash reserves and financing facilities, through the review of forecast and actual cash flows. 

The Group typically holds surplus cash in demand or term deposits or highly liquid investments, which typically can be accessed or liquidated within  
24 hours. 

The majority of borrowings comprise a short-term loan at Los Pelambres, Centinela and Antucoya, repayable over a period of up to one year, project 
financing (senior debt) at Centinela, repayable over approximately 2.7 years, project financing (senior debt) at Antucoya repayable over approximately  
7.5 years, long-term subordinated debt at Antucoya repayable over approximately 8 years, and a corporate loan at Antofagasta plc repayable over 
approximately 5 years. 

At the end of the 2017 the Group was in a net debt position (2016 – net debt position), as disclosed in Note 31C. Details of cash, cash equivalents and liquid 
investments are given in Note 21, while details of borrowings including the maturity profile are given in Note 22D. Details of undrawn committed borrowing 
facilities are also given in Note 22. 

The following table analyses the maturity of the Group’s contractual commitments in respect of its financial liabilities and derivative financial instruments.  
The table has been drawn up based on the undiscounted cash flows on the earliest date on which the Group can be required to pay. The table includes  
both interest and principal cash flows. 

 At 31 December 2017 

Corporate loans 

Other loans (including short-term loans) 

Finance leases 

Preference shares* 

Trade and other payables 

Derivative financial instruments 

 At 31 December 2016 

Corporate loans 

Other loans (including short-term loans) 

Finance leases 

Preference shares 

Trade and other payables 

Derivative financial instruments 

Less than 
6 months 
$m 

 (205.8)

(191.5)

 (11.2)

– 

(606.1)

(1.5)

Between 
6 months 
to 1 year 
$m 

 (102.6)

 (285.4)

 (11.2)

– 

(2.8)

(5.5)

Between  
1-2 years  
$m 

After 
2 years 
$m 

 (274.8) 

 (1,157.7)

 –  

 (29.8) 

(3.0) 

(6.1) 

(0.1) 

 (871.3)

 (73.8)

– 

(1.4)

– 

2017 
Total 
$m 

 (1,740.9)

 (1,348.2)

(126.0)

(3.0)

(616.4)

(7.1)

(1,016.1)

(407.5)

(313.8) 

(2,104.2)

(3,841.6)

Less than 
6 months 
$m 

(117.0)

(190.6)

(14.6)

– 

(590.8)

(1.0)

(914.0)

Between 
6 months 
to 1 year 
$m 

(191.3)

(352.1)

(14.3)

– 

(4.1)

(1.5)

Between  
1-2 years  
$m 

After 
2 years 
$m 

(286.8) 

(1,510.6)

– 

(19.8) 

(2.5) 

(8.7) 

– 

(714.6)

(73.5)

– 

(0.1)

– 

2016 
Total 
$m 

(2,105.7)

(1,257.3)

(122.2)

(2.5)

(603.7)

(2.5)

(563.3)

(317.8) 

(2,298.8)

(4,093.9)

*  The preference shares pay an annual dividend of £100,000 in perpetuity, and accordingly it is not possible to determine total amounts payable for periods without a fixed  

end date. 

(viii) Capital risk management 
The Group’s objectives are to return capital to shareholders while leaving the Group with sufficient funds to progress its short, medium and long-term  
growth plans as well as preserving the financial flexibility to take advantage of opportunities as they may arise. This policy remains unchanged. The Group 
monitors capital on the basis of net cash (defined as cash, cash equivalents and liquid investments less borrowings) which was a net debt of $456.4 million  
at 31 December 2017 (2016 – net debt $1,071.7 million), as well as gross cash (defined as cash, cash equivalents and liquid investments) which was $2,252.3 
million at 31 December 2017 (2016 – $2,048.5 million). The Group’s total cash is held in a combination of on demand and term deposits and managed funds 
investing in high quality, fixed income instruments. Some of the managed funds have been instructed to invest in instruments with average maturities greater 
than 90 days. These amounts are presented as liquid investments but are included in net cash for monitoring and decision-making purposes. The Group has 
a risk averse investment strategy. The Group’s borrowings are detailed in Note 22. Additional project finance or shareholder loans are taken out by the 
operating subsidiaries to fund projects on a case-by-case basis. 

antofagasta.co.uk 

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antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

24  FINANCIAL INSTRUMENTS AND FINANCIAL RISK MANAGEMENT CONTINUED 

D)  Derivative financial instruments 
The Group occasionally uses derivative financial instruments, in general to reduce its exposure to commodity price, foreign exchange and interest rate 
movements. The Group does not use such derivative instruments for speculative trading purposes. 

The Group has applied the hedge accounting provisions of IAS 39 “Financial Instruments: Recognition and Measurement”. Changes in the fair value  
of derivative financial instruments that are designated and effective as hedges of future cash flows have been recognised directly in equity, with such 
amounts subsequently recognised in the income statement in the period when the hedged item affects profit or loss. Any ineffective portion is recognised 
immediately in the income statement. Realised gains and losses on commodity derivatives recognised in the income statement have been recorded within 
revenue. The time value element of changes in the fair value of derivative options is excluded from the designated hedging relationship, and is therefore 
recognised directly in the income statement within other finance items. Realised gains and losses and changes in the fair value of exchange and interest 
derivatives are recognised within other finance items for those derivatives where hedge accounting has not been applied. When hedge accounting has been 
applied the realised gains and losses on exchange and interest derivatives are recognised within other finance items and interest expense respectively. 

(I)  Mark-to-market adjustments and income statement impact 
The gains or losses recorded in the income statement or in reserves during the year, and the fair value recorded on the balance sheet at the end of the year 
in respect of derivatives are as follows: 

For the year ended 31 December 2017 

Impact on income statement 

Impact on reserves 

Fair value recorded on 
balance sheet 

Losses 
resulting from 
mark-to-market 
adjustments 
on hedging instruments 
2017 
$m 

Realised  
losses 2017  
$m 

Gains  
resulting from mark-to-
market adjustments  
on hedging instruments 
2017  
$m 

Total net loss 
2017 
$m 

Net financial 
(liability)/asset 
31 December 2017 
$m 

(13.3) 

(3.8) 

(0.7) 

(0.2) 

(18.0) 

(4.4)

(3.4)

– 

– 

(7.8)

(17.7)

(7.2)

(0.7)

(0.2)

(25.8)

–   

–   

1.0   

0.2   

1.2   

(3.4)

(3.4)

(0.2)

0.2 

(6.8)

Impact on income statement 

Impact on reserves 

Fair value recorded on 
balance sheet 

Gains 
resulting from 
mark-to-market adjustments 
on hedging 
instruments 
2016 
$m 

Realised  
(losses)/gains  
2016  
$m 

Total net 
(loss)/gain 
2016 
$m 

(Losses)/gains resulting from  
mark-to-market adjustments 
on hedging instruments  
2016  
$m 

Net financial (liability)/asset 
31 December 2016 
$m 

(2.2) 

(2.6) 

(1.0) 

(5.8) 

1.0 

– 

– 

1.0 

(1.2)

(2.6)

(1.0)

(4.8)

–   

1.8   

0.5   

2.3   

1.1 

(1.2)

– 

(0.1)

Commodity derivatives 

–  Centinela 
–  Antucoya 
Interest derivatives 

–  Centinela 
–  Railway and other transport services 

For the year ended 31 December 2016 

Commodity derivatives 

–  Centinela 
Interest derivatives 

–  Centinela 
–  Railway and other transport services 

The gains/(losses) recognised in reserves are disclosed before non-controlling interests and tax. 

At December 2017 the credit risk implicit in the liability is less than $0.1 million (2016 – $0.1 million). The differences between the carrying amount and  
the amount the entity would be contractually required to pay at the maturity date are not material. 

176 
176

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
The net financial liability resulting from the balance sheet mark-to-market adjustments are analysed as follows: 

Analysed between: 

Current assets 

Non-current assets 

Current liabilities 

Non-current liabilities 

2017 
$m 

0.1 

0.2 

(7.1)

– 

(6.8)

2016 
$m 

2.2 

0.2 

(2.0)

(0.5)

(0.1)

(II)  Outstanding derivative financial instruments 

Commodity derivatives 
The Group periodically uses commodity derivatives to reduce its exposure to fluctuation in the copper price. 

Min-Max Instruments 
The group has min-max options for copper production according to the Group’s Pricing Policy. 

Centinela  

Antucoya 

At 31 December 2017 

For instruments held at 31 December 2017 

Copper production 
hedged 

Average 
Min 

Average 
Max 

tonnes 

$/lb 

$/lb 

30,000  2.50 

3.60 

30,000  2.50 

3.60 

Weighted average  
remaining period from  
1 January 2018 

Months 

6.5 

6.5 

Covering a period up to: 

31.12.2018 

31.12.2018 

Interest derivatives 
The Group periodically uses interest derivatives to reduce its exposure to interest rate movements. 

Interest rate swaps 
The Group has used interest rate swaps to swap the floating rate interest relating to the Centinela project financing and long-term loans at the Railway for 
fixed rate interest. At 31 December 2017 the Group had entered into the contracts outlined below. 

Centinela concentrates 

Railway and other transport services 

Start date 

15/02/11 

12/08/14 

Maturity date 

15/08/18 

12/08/19 

Maximum notional amount 
$m 

Weighted average fixed rate 
% 

35.0 

60.0 

3.372 

1.634 

The actual notional amount hedged depends upon the amount of the related debt currently outstanding. 

25  LONG-TERM INCENTIVE PLAN 
The long-term incentive plan (the “Plan”) was introduced at the end of 2011. Awards granted pursuant to the Plan form part of the remuneration of senior 
managers in the Group. Directors are not eligible to participate in the Plan. 

Details of the Awards 
Under the Plan, the Group may grant awards based on the price of ordinary shares in the Company and cannot grant awards over actual shares. 

–  Restricted Awards: These awards are conditional rights to receive cash payment by reference to a specified number of the Company’s ordinary shares, 

subject to the relevant employee remaining employed by the Group when the Restricted Award vests; and 

–  Performance Awards: These awards are conditional rights to receive cash payment by reference to a specified number of the Company’s ordinary  

shares subject to both the satisfaction of a performance condition and the relevant employee remaining employed by the Group when the Performance 
Award vests. 

When awards vest under the Plan, participants become entitled to receive a cash payment by reference to the number and portion of awards that have 
vested and the market value of the Company’s ordinary shares on the date of vesting. There is no exercise price payable by participants in respect of  
the awards. 

Restricted Awards can only vest in full if participants remain employed by the Group for three years from the date that Restricted Awards are granted. In 
ordinary circumstances, the first one-third of a Restricted Award will vest after one year, the second one-third will vest after two years and the remaining  
one-third will vest after three years. There are no performance criteria attached to Restricted Awards. The fair value of Restricted Awards granted under  
the Plan is recorded as a compensation expense over the vesting periods, with a corresponding liability recognised for the fair value of the liability at the  
end of each period until settled. 

Performance Awards only vest if certain performance criteria are met. The performance criteria reflect a number of factors including total shareholder 
return, earnings levels, growth in the Group’s reserves and resources and project delivery targets. The fair value of Performance Awards under the Plan  
is recorded as a compensation expense over the vesting period, with a corresponding liability at the end of each period until settled. 

antofagasta.co.uk 

177 
177

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

25  LONG-TERM INCENTIVE PLAN CONTINUED 

Valuation process and accounting for the awards 
The fair value of the awards is determined using a Monte Carlo simulation model. The inputs into the Monte Carlo simulation model are as follows: 

Weighted average forecast share price at vesting date 

Expected volatility 

Expected life of awards 

Expected dividend yields 

Risk free rate 

2017 

$9.20 

25.60% 

3 years 

2.18% 

1.19% 

2016 

$9.20 

36.39% 

3 years 

0.34% 

0.44% 

Expected volatility was determined by calculating the historical volatility of the Group’s share price over the previous five years. The expected life of awards  
used in the model has been adjusted based on management’s best estimate for the effects of non-transferability and compliance of the objectives determined 
according to the characteristic of each plan. 

The number of awards outstanding at the end of the year is as follows: 

Outstanding at 1 January 2017 

Granted during the year 

Cancelled during the year 

Payments during the year 

Outstanding at 31 December 2017 

Number of awards that have vested 

Restricted Awards 

Performance 
Awards 

562,136 

1,173,092 

242,769 

(24,911) 

566,458 

(82,038)

(127,506) 

(218,958)

652,488 

1,438,554 

325,226 

The Group has recorded a liability for $11.4 million at 31 December 2017, of which $5.9 million is due after more than one year (31 December 2016 – $6.8 
million of which $3.6 million was due after more than one year) and total expenses of $10.1 million for the year (2016 – expense of $3.4 million).  
The intrinsic value is $11.4 million. 

26  POST-EMPLOYMENT BENEFIT OBLIGATIONS 

A)  Defined contribution schemes 
The Group operates defined contribution schemes for a limited number of employees. The amount charged to the income statement in 2017 was $0.1 million 
(2016 – $0.1 million), representing the amount paid in the year. There were no outstanding amounts which remain payable at the end of either year. 

B)  Severance provisions 
Employment terms at some of the Group’s operations provide for payment of a severance indemnity when an employment contract comes to an end. This  
is typically at the rate of one month for each year of service (subject in most cases to a cap as to the number of qualifying years of service) and based on 
final salary level. The severance indemnity obligation is treated as an unfunded defined benefit plan, and the obligation recognised is based on valuations 
performed by an independent actuary using the projected unit credit method, which are regularly updated. The obligation recognised in the balance sheet 
represents the present value of the severance indemnity obligation. Actuarial gains and losses are immediately recognised in other comprehensive income. 

The most recent valuation was carried out in 2017 by Ernst & Young, a qualified actuary in Santiago, Chile who is not connected with the Group. 

The main assumptions used to determine the actuarial present value of benefit obligations were as follows: 

Average nominal discount rate 

Average rate of increase in salaries 

Average staff turnover 

Amounts included in the income statement in respect of severance provisions are as follows: 

Current service cost (charge to operating profit) 

Interest cost (charge to interest expenses) 

Foreign exchange charge to other finance items 

Total charge to income statement 

2017 

4.9% 

1.5% 

6.5% 

2017  
$m 

(31.9) 

(4.5) 

(8.1) 

(44.5) 

2016 

4.5% 

1.7% 

11.8% 

2016 
$m 

(15.5)

(4.4)

(6.2)

(26.1)

178 
178

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
Movements in the present value of severance provisions were as follows: 

Balance at the beginning of the year 

Current service cost 

Actuarial gains 

Charge capitalised 

Interest cost 

Reclassification 

Paid in the year 

Foreign currency exchange difference 

Balance at the end of the year 

Assumptions description 

Discount rate 

Nominal discount rate 

Reference rate name 

Governmental or corporate rate 

Reference rating 

Corresponds to an Issuance market (primary) or secondary market 

Issuance currency associated to the reference rate 

Date of determination of the reference interest rate 

Source of the reference interest rate 

2017 
$m 

(92.2)

(31.9)

5.7 

– 

(4.5)

– 

17.0 

(8.1)

2016 
$m 

(86.9)

(15.5)

7.8 

(0.5)

(4.4)

1.3 

12.2 

(6.2)

(114.0)

(92.2)

31 December 2017 

4.87% 

31 December 2016 

4.53% 

20–year Chilean Central Bank Bonds  20–year Chilean Central Bank Bonds 

Governmental 

AA–/AA+ 

Secondary 

Chilean peso 

27 November 2017

Bloomberg 

Governmental 

AA–/AA+ 

Secondary 

Chilean peso 

14 September 2016 

Bloomberg 

The discount rate is the interest rate used to discount the estimated future severance payments to their present value. The table above shows the principal 
instruments and assumptions utilised in determining the discount rate:  

Rate of increase in salaries 
This represents the estimated average rates of future salary increases, reflecting likely future promotions and other changes. This has been based on 
historical information for the Group for the period from 2013 to 2017. 

Turnover rate 
This represents the estimated average level of future employee turnover. This has been based on historical information for the Group for the period from  
2013 to 2017.  

Sensitivity analysis 
Significant actuarial assumptions for the determination of the defined obligation are discount rate, expected salary increase and staff turnover. The sensitivity 
analysis below have been determined based on reasonably possible changes of the respective assumptions occurring at the end of the reporting period, while 
holding all other assumptions constant. 

–  If the discount rate is 100 basis points higher the defined benefit obligation would decrease by $7.5 million. If the discount rate is 100 basis points lower  

the defined benefit obligation would increase by $8.8 million. 

–  If the expected salary growth increases by 1% the defined benefit obligation would increase by $7.0 million. If the expected salary growth decreases by  

1% the defined benefit obligation would decrease by $6.6 million.  

–  If the staff turnover increases by 1% the defined benefit obligation would decrease by less than $1.7 million. If the staff turnover decreases by 1% the 

defined benefit obligation would increase by less than $1.7 million. 

antofagasta.co.uk 

179 
179

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

27  DEFERRED TAX AND LIABILITIES 

At 1 January 2016 

(Charge)/credit to income 

Deferred tax credit relating to 
exceptional impairments provisions 

Reclassification 

Disposal of subsidiary 

Charge deferred in equity 

At 1 January 2017 

(Charge)/credit to income 

Charge deferred in equity 

Reclassifications 

At 31 December 2017 

Accelerated 
capital 
allowances 
$m 

(1,067.8) 

(21.4) 

99.4 

5.2 

– 

– 

(984.6) 

(2.7) 

– 

– 

(987.3) 

Temporary 
differences 
on provisions 
$m 

133.0 

(6.8)

105.5 

(5.1)

(3.7)

(2.3)

220.6 

(99.1)

(1.8)

(1.8)

117.9 

Withholding 
tax 
$m 

(11.4)

– 

– 

0.1 

– 

– 

(11.3)

– 

– 

– 

(11.3)

Short-term 
differences 
$m 

49.0 

4.4 

– 

2.8 

– 

0.5 

56.7 

2.1 

0.5 

– 

59.3 

Mining tax 
(Royalty)  
$m 

(55.1) 

(24.8) 

– 

– 

– 

(0.3) 

(80.2) 

(24.1) 

– 

– 

Tax losses  
$m 

0.7 

– 

– 

– 

– 

– 

0.7 

– 

– 

– 

Total 
$m 

(951.6)

(48.6)

204.9 

3.0 

(3.7)

(2.1)

(798.1)

(123.8)

(1.3)

(1.8)

(104.3) 

0.7 

(925.0)

The charge to the income statement of $123.8 million (2016 – $48.6 million) includes a credit for foreign exchange differences of $0.1 million (2016 – 
includes a credit of $1.1 million). 

Certain deferred tax assets and liabilities have been offset. Deferred tax assets and liabilities are offset where the Group has a legally enforceable right  
to do so. The following is the analysis of the deferred tax balance (after offset): 

Deferred tax assets 

Deferred tax liabilities 

Net deferred tax balances 

2017  
$m 

69.1 

(994.1) 

(925.0) 

2016 
$m 

82.8 

(880.9)

(798.1)

At 31 December 2017, the Group had unused tax losses of $83.5 million (2016 – $7.4 million) available for offset against future profits. The deferred tax asset 
by nil has been recognised in respect of these losses in 2017 (2016 – $2.7 million). These losses may be carried forward indefinitely. 

At 31 December 2017, the aggregate amount of temporary differences associated with undistributed earnings of subsidiaries for which deferred tax liabilities 
have not been recognised was $5,303.4 million (2016 – $4,826.8 million). No liability has been recognised in respect of these differences because the Group 
is in a position to control the timing of the reversal of the temporary differences and it is likely that such differences will not reverse in the foreseeable future. 

Temporary differences arising in connection with interests in associates are insignificant. 

The deferred tax balance of $925.0 million (2016 – $798.1 million) includes $1,041.2 million (2016 – $878.8 million) due in more than one year. All amounts 
are shown as non-current on the face of the balance sheet as required by IAS 12. 

28  DECOMMISSIONING & RESTORATION PROVISIONS 

Balance at the beginning of the year 

Charge to operating profit in the year 

Unwind of discount to net interest in the year 

Capitalised adjustment to provision 

Reclassification 

Utilised in year 

Disposal 

Foreign currency exchange difference 

Balance at the end of the year 

2017  
$m 

(392.1) 

(39.8) 

(7.2) 

3.5 

0.1 

2.6 

– 

(0.1) 

(433.0) 

2016 
$m 

(394.0)

(9.3)

(5.5)

(16.9)

(1.1)

3.7 

35.8 

(4.8)

(392.1)

Decommissioning and restoration costs relate to the Group’s mining operations. Costs are estimated on the basis of a formal closure plan and are subject  
to regular independent formal review. It is estimated that the provision will be utilised from 2024 until 2063 based on current mine plans. 

180 
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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
29  SHARE CAPITAL AND OTHER RESERVES 
(I)  Share capital 
The ordinary share capital of the Company is as follows: 

Authorised 

Ordinary shares of 5p each 

Issued and fully paid 

Ordinary shares of 5p each 

2017 
Number 

2016  
Number 

2017 
$m 

2016 
$m 

1,300,000,000 

1,300,000,000 

118.9 

118.9 

2017 
Number 

2016  
Number 

2017 
$m 

2016 
$m 

985,865,695 

985,865,695 

89.8 

89.8 

The Company has one class of ordinary shares which carry no right to fixed income. Each ordinary share carries one vote at any general meeting. 

There were no changes in the authorised or issued share capital of the Company in either 2016 or 2017. Details of the Company’s preference share capital, 
which is included within borrowings in accordance with IAS 32, are given in Note 22A(xiv). 

(II)  Other reserves and retained earnings 
Details of the share premium account, hedging, fair value and translation reserves and retained earnings for both 2017 and 2016 are included within the 
consolidated statement of changes in equity on page 134. 

Hedging reserves1 

At 1 January 

Parent and subsidiaries net cash flow hedge fair value (losses) 

Parent and subsidiaries net cash flow hedge losses transferred to the income statement 

Share of other comprehensive income of equity accounted units, net of tax 

Share of other comprehensive gains of equity accounted units, net of tax transferred to the income statement 
Reclassification5 

Tax on the above 

At 31 December 

Available-for-sale revaluation reserves2 

At 1 January 

Gains on available-for-sale investment 

At 31 December 

Foreign currency translation reserves3 

At 1 January 

Currency translation reclassified on disposal 

At 31 December 

Total other reserves per balance sheet 

Retained earnings 

At 1 January 

Parent and subsidiaries profit for the year 

Equity accounted units’ gains/(losses) after tax for the year 
Actuarial gains4 
Reclassification5 

Tax relating to components of other comprehensive income 

Total comprehensive income for the year 

Dividends paid 

At 31 December 

2017 
$m 

(8.8)

(16.8)

18.0 

– 

– 

8.0 

(0.8)

(0.4)

(11.2)

1.4 

(9.8)

(2.3)

– 

(2.3)

(12.5)

6,548.6 

690.9 

59.7 

5.8 

(9.6)

(1.1)

7,294.3 

(252.4)

7,041.9 

2016 
$m 

(44.1)

(2.4)

4.1 

3.1 

31.6 

(1.1)

(8.8)

(12.9)

1.7 

(11.2)

(2.3)

– 

(2.3)

(22.3)

6,416.4 

269.3 

(111.3)

5.1 

– 

(0.3)

6,579.2 

(30.6)

6,548.6 

1.  The hedging reserve records gains or losses on cash flow hedges that are recognised initially in equity (through other comprehensive income), as described in Note 24. 

2.  The available-for-sale revaluation reserves record fair value gains or losses relating to available-for-sale investment, as described in Note 18. 

3.  Exchange differences arising on the translation of the Group’s net investment in foreign-controlled companies are taken to the foreign currency translation reserve.  

The cumulative differences relating to an investment are transferred to the income statement when the investment is disposed of. 

4.  Actuarial gains or losses relating to long–term employee benefits, as described in Note 26. 

5.  Mainly compromises an $8.8 million reclassification between the hedging reserve and retained earnings. 

antofagasta.co.uk 

181 
181

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

30  NON-CONTROLLING INTERESTS 
The non-controlling interests of the Group during 2017 and 2016 are as follows: 

Non-Controlling 
Interest  
% 

40.0 

30.0 

30.0 

Non-Controlling  
Interest  
% 

40.0 

30.0 

0.1 

30.0 

Country 

Chile 

Chile 

Chile 

Country 

Chile 

Chile 

Chile 

Chile 

Los Pelambres 

Centinela  

Antucoya 

Total 

Los Pelambres 

Centinela  

Michilla 

Antucoya 

Total 

901.1 

848.5 

(55.2)

1,694.4 

At 
1 January 2016 
$m 

1,040.4 

814.1 

0.1 

18.6 

1,873.2 

At 
1 January 2017 
$m 

Share of profit/ 
for the financial 
year 
$m 

Share of 
dividends 
$m 

(320.0)

– 

– 

(320.0)

Disposal 
of non-controlling 
interest 
$m 

Hedging and 
actuarial 
gains/(losses)  
$m 

At 
31 December 2017 
$m 

– 

– 

– 

– 

1.9 

0.1 

(0.3) 

1.7 

925.1 

942.3 

(44.2)

1,823.2 

342.1 

93.7 

11.3 

447.1 

Share of 
profit/(losses) 
for the financial year 
$m 

97.9 

32.8 

– 

(74.3)

56.4 

Share of dividends 
$m 

(260.0)

– 

– 

– 

(260.0)

Disposal 
of non-controlling 
interest 
$m 

Hedging and 
 actuarial gains 
$m 

At 
31 December 2016 
$m 

– 

– 

(0.1) 

– 

(0.1) 

22.8 

1.6 

– 

0.5 

24.9 

901.1 

848.5 

– 

(55.2)

1,694.4 

The proportion of the voting rights is proportional with the economic interest under the companies listed above. 

Summarised financial position and cash flow information for the years ended 2017 and 2016 is set out below: 

Non-controlling interest (%) 

Cash and cash equivalent 

Current assets 

Non-currents assets 

Current liabilities 

Non-currents liabilities 

Accumulated non-controlling interest 

Net cash flow from operating activities 

Net cash flow from investing activities 

Net cash flow from financing activities 

Non-controlling interest (%) 

Cash and cash equivalent 

Current assets 

Non-currents assets 

Current liabilities 

Non-currents liabilities 

Accumulated non-controlling interest 

Net cash flow from operating activities 

Net cash flow from investing activities 

Net cash flow from financing activities 

Los Pelambres 
2017 
$m 

40.0% 

241.8 

457.4 

2,981.7 

(584.6)

(827.4)

1,277.0 

(272.8)

(908.7)

Los Pelambres 
2016 
$m 

40.0% 

143.0 

645.5 

2,960.7 

(638.9)

(729.3)

901.3 

907.3 

(215.2)

(711.1)

Centinela  
2017  
$m 

30.0% 

353.0 

809.2 

4,770.1 

(862.4) 

(1,773.1) 

68.1 

(573.6) 

(150.0) 

Centinela  
2016  
$m 

30.0% 

384.0 

890.1 

4,117.9 

(631.7) 

(1,347.6) 

848.6 

523.6 

(555.1) 

(150.0) 

Antucoya 
2017 
$m 

30.0% 

158.9 

207.5 

1,366.5 

(198.5)

(1,686.8)

240.7 

(75.7)

(160.5)

Antucoya 
2016 
$m 

30.0% 

152.9 

334.8 

1,405.7 

(166.2)

(919.1)

(55.6)

50.6 

(9.0)

(36.1)

Notes to the summarised financial position and cash flow 

(i)  The amounts disclosed for each subsidiary are based on the amounts included in the consolidated financial statements (i.e. 100% of the results and 

balances of the subsidiary rather than the non-controlling interest proportionate share) before inter-company eliminations. 

(ii)  Summarised income statement information is shown in the segment information in Note 5.  

182 
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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
31  NOTES TO THE CONSOLIDATED CASH FLOW STATEMENT 

A)  Reconciliation of profit before tax to net cash inflow from operating activities 

Profit before tax from continuing operations 

Profit before tax from discontinued operations 

Depreciation and amortisation 

Net loss on disposals 

Impairment 

Profit on disposal of discontinued operations 

Net finance expense 

Share of results from associates and joint ventures 

(Increase)/decrease in inventories 

Decrease/(increase) in debtors 

Increase in creditors 

Increase in provisions 

2017 
$m 

1,830.8 

0.6 

581.1 

8.3 

– 

(0.6)

70.0 

(59.7)

(55.0)

5.9 

61.6 

52.0 

2016 
$m 

284.6 

35.1 

578.4 

19.7 

456.6 

(35.1)

71.1 

111.3 

3.9 

(124.9)

47.7 

8.9 

Cash flow from operations from continuing and discontinued operations 

2,495.0 

1,457.3 

B)  Analysis of changes in net debt 

At  
1 January 
2017  
$m 

Re-classification 
to disposal 
group 
 $m 

Cash 
flows  
$m 

Fair value 
gains 
$m 

New 
leases 
$m 

Amortisation of 
finance costs 
$m 

Capitalisation 
of interest 
$m 

Cash and cash equivalents 

Liquid investments 

Total cash and cash equivalents  
and liquid investments 

716.3 

361.0 

1,332.2 

(166.1) 

2,048.5 

194.9 

Borrowings due within one year 

(814.2) 

267.5 

Borrowings due after one year 

(2,198.4) 

186.0 

Finance leases due within one year 

(22.5) 

1.3 

Finance leases due after one year 

(82.6) 

32.2 

Preference shares 

Total borrowings 

Net (debt)/cash 

(2.5) 

0.1 

(3,120.2) 

487.1 

(2.2)

– 

(2.2)

– 

– 

– 

– 

– 

– 

– 

2.6 

2.6 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

(34.1)

– 

(34.1)

(1,071.7) 

682.0 

(2.2)

2.6 

(34.1)

– 

– 

– 

– 

– 

– 

– 

– 

(3.9)

(27.8)

– 

– 

– 

(3.9)

(3.9)

– 

– 

– 

(27.8)

(27.8)

At  
1 January 
2016 
$m 

Cash  
flows  
$m 

Reclassification  
to disposal  
group 
$m 

Fair value 
gains 
 $m 

New 
leases 
$m 

Amortisation  
of finance costs 
$m 

Capitalisation  
of interest 
$m 

Movement 
between 
maturity 
categories 
$m 

– 

– 

– 

(185.5) 

185.5 

– 

– 

– 

– 

– 

Movement 
between 
maturity 
categories 
$m 

Other  
$m 

Exchange 
$m 

At 
31 December 
2017 
$m 

– 

– 

– 

– 

– 

(0.2) 

(6.6) 

– 

(6.8) 

(6.8) 

8.5 

– 

1,083.6 

1,168.7 

8.5 

2,252.3 

– 

– 

(0.1)

(2.3)

(0.6)

(3.0)

5.5 

(732.2)

(1,858.6)

(21.5)

(93.4)

(3.0)

(2,708.7)

(456.4)

Other  
$m 

Exchange  
$m 

11.9 

– 

At  
31 December 
2016 
$m 

716.3 

1,332.2 

Cash and cash equivalents 

Liquid investments 

Total cash and cash equivalents  
and liquid investments 

807.5 

(113.1) 

924.1 

406.9 

1,731.6 

293.8 

Borrowings due within one year 

(753.4) 

– 

Borrowings due after one year 

(1,963.3) 

(245.7) 

Finance leases due within one year 

(5.5) 

– 

Finance leases due after one year 

(29.9) 

31.2 

Preference shares 

Total borrowings 

Net (debt)/cash 

(3.0) 

– 

(2,755.1) 

(214.5) 

10.0 

– 

10.0 

– 

– 

– 

– 

– 

– 

– 

1.2 

1.2 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

(94.5)

– 

(94.5)

– 

– 

– 

– 

– 

– 

– 

– 

(19.4)

(30.8)

– 

– 

– 

(19.4)

(19.4)

– 

– 

– 

(30.8)

(30.8)

– 

– 

– 

– 

– 

– 

– 

– 

– 

(60.8) 

60.8 

(17.1) 

(4.4) 

17.1 

– 

(4.4) 

(4.4) 

– 

– 

– 

11.9 

2,048.5 

– 

– 

0.1 

(2.1)

0.5 

(1.5)

10.3

(814.2)

(2,198.4)

(22.5)

(82.6)

(2.5)

(3,120.2)

(1,071.7)

(1,023.5) 

79.3 

10.0 

1.2 

(94.5)

antofagasta.co.uk 

183 
183

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

31  NOTES TO THE CONSOLIDATED CASH FLOW STATEMENT CONTINUED 

C)  Net debt 

Cash, cash equivalents and liquid investments 

Total borrowings 

32  OPERATING LEASE ARRANGEMENTS 

Minimum lease payments expense under operating leases recognised for the year 

2017 
$m 

2,252.3 

(2,708.7) 

(456.4) 

2016 
$m 

2,048.5 

(3,120.2)

(1,071.7)

2017  
$m 

140.6 

2016 
$m 

70.3 

At the balance sheet date, the Group had outstanding commitments for future minimum lease payments under non-cancellable operating leases, which fall 
due as follows: 

Within one year 

In their second to fifth years inclusive 

After five years 

2017  
$m 

94.1 

78.3 

– 

172.4 

2016 
$m 

75.1 

37.0 

– 

112.1 

Operating lease payments relate mainly to rental of plant and equipment by operating subsidiaries of the Group. 

33  EXCHANGE RATES IN US DOLLARS 
Assets and liabilities denominated in foreign currencies are translated into dollars and sterling at the period-end rates of exchange. 

Results denominated in foreign currencies have been translated into dollars at the average rate for each period. 

Year-end rates 

Average rates 

2017 

2016 

$1.3535 = £1; 
$1 = Ch$614.75 

$1.2878 = £1; 
$1 = Ch$649.19 

$1.2185 = £1;
$1 = Ch$669.47 

$1.3593 = £1;
$1 = Ch$676.80 

184 
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Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
34  RELATED PARTY TRANSACTIONS 
Transactions between the Company and its subsidiaries, which are related parties, have been eliminated on consolidation and are not disclosed in this note. 
Transactions between the Group and its associates and joint ventures are disclosed below. 

The transactions which Group companies entered into with related parties who are not members of the Group are set out below. There are no guarantees 
given or received and no provisions for doubtful debts related to the amount of outstanding balances. 

A)  Quiñenco SA 
Quiñenco SA (“Quiñenco”) is a Chilean financial and industrial conglomerate, the shares of which are traded on the Santiago Stock Exchange. The Group and 
Quiñenco are both under the control of the Luksic family, and three Directors of the Company, Jean-Paul Luksic, Andronico Luksic and Gonzalo Menéndez, 
are also directors of Quiñenco. 

The following transactions took place between the Group and the Quiñenco group of companies, all of which were on normal commercial terms: 

–  the Group earned interest income of $0.6 million (2016 – $0.1 million) during the year on deposits with Banco de Chile SA, a subsidiary of Quiñenco. 

Deposit balances at the end of the year were $18.0 million (2016 – $34.5 million); 

–  the Group earned interest income of $0.4 million (2016 – $0.3 million) during the year on investments with BanChile Corredores de Bolsa SA, a subsidiary 

of Quiñenco. Investment balances at the end of the year were $16.5 million (2016 – nil); 

–  the Group made purchases of fuel from ENEX SA, a subsidiary of Quiñenco, of $185.3 million (2016 – $161.6 million). The balance due to ENEX SA at the 

end of the year was nil (2016 – nil). 

B)  Compañía de Inversiones Adriático SA 
In 2017, the Group leased office space on normal commercial terms from Compañía de Inversiones Adriático SA, a company controlled by the Luksic family, 
at a cost of $0.6 million (2016 – less than $0.6 million). 

C)  Antomin Limited, Antomin 2 Limited and Antomin Investors Limited 
The Group holds a 51% interest in Antomin 2 Limited (“Antomin 2”) and Antomin Investors Limited (“Antomin Investors”), which own a number of copper 
exploration properties. The Group originally acquired its 51% interest in these properties for a nominal consideration from Mineralinvest Establishment,  
which continues to hold the remaining 49% of Antomin 2 and Antomin Investors. Mineralinvest is owned by a Liechtenstein foundation, in which members  
of the Luksic family are interested. During the year ended 31 December 2017 the Group incurred $0.6 million (year ended 31 December 2016 – $1.0 million)  
of exploration work at these properties.  

D)  Tethyan Copper Company Limited 
As explained in Note 17 the Group has a 50% interest in Tethyan Copper Company Limited (“Tethyan”), which is a joint venture with Barrick Gold Corporation 
over Tethyan’s mineral interests in Pakistan. During 2017 the Group contributed $9.3 million (2016 – $10.0 million) to Tethyan.  

E)  Energía Andina SA 
As explained in Note 17, the Group has a 50.1% interest in Energia Andina SA, which is a joint venture with Origin Energy Geothermal Chile Limitada for  
the evaluation and development of potential sources of geothermal and solar energy. During the year ended 31 December 2017 the Group contributed  
$0.1 million to Energía Andina (2016 – $1.0 million). 

F)  Compañia Minera Zaldívar SpA 
The Group has a 50% interest in Minera Zaldívar which was acquired on 1 December 2015 (see Note 16), which is a joint venture with Barrick Gold 
Corporation. Antofagasta is the operator of Zaldívar from 1 December 2015 onwards. The balance due from Zaldívar to Group companies at the end  
of the year was $5.2 million (2016 – $4.2 million). During 2017 the Group received dividends from Minera Zaldivar of $60.0 million (2016 – nil). 

Inversiones Hornitos SA 

G) 
As explained in Note 17, the Group has a 40% interest in Inversiones Hornitos SA, which is accounted for as an associate. The Group paid $175.2 million  
(year ended 31 December 2016 – $144.0 million) to Inversiones Hornitos in relation to the energy supply contract at Centinela. During 2017 the Group 
received dividends from Inversiones Hornitos SA of $21.8 million (2016 – $10.2 million). 

H)  Parque Eólico El Arrayan SA 
As explained in Note 17, the Group has a 30% interest in Parque Eólico El Arrayán SA (“El Arrayán”), which is accounted for as an associate. The Group  
paid $39.7 million (year ended 31 December 2016 – $23.2 million) to El Arrayán in relation to the energy supply contract at Los Pelambres.  

I)  Directors and other key management personnel 
Information relating to Directors’ remuneration and interests is given in the Remuneration Report on page 102. Information relating to the remuneration  
of key management personnel including the Directors is given in Note 8. 

35  ULTIMATE PARENT COMPANY 
The immediate parent of the Group is Metalinvest Establishment, which is controlled by E. Abaroa Foundation, in which members of the Luksic family are interested. 

Both Metalinvest Establishment and the E. Abaroa Foundation are domiciled in Liechtenstein. Information relating to the interest of Metalinvest Establishment 
and the E. Abaroa Foundation is given in the Directors’ Report. 

antofagasta.co.uk 

185 
185

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

36  ANTOFAGASTA PLC – BALANCE SHEET OF THE PARENT COMPANY AND RELATED NOTES 
At 31 December 2017 

Non-current assets 

Investment in subsidiaries 

Other receivables 

Property, plant and equipment 

Current assets 

Other receivables 

Liquid investments 

Cash and cash equivalents 

Total assets 

Current liabilities 

Amounts payable to subsidiaries 

Other payables 

Non-current liabilities 

Medium and long-term borrowings 

Total liabilities 

Net assets 

Equity 

Share capital 

Share premium 

Retained earnings 

At 1 January 2017 

Profit for the year attributable to the owners 

Other changes in retained earnings 

Total equity 

Note 

36D 

36D 

36E 

2017  
$m 

2016 
$m 

538.6 

500.0 

0.3 

538.6 

500.0 

0.4 

1,038.9 

1,039.0 

57.5 

378.5 

372.1 

808.1 

52.3 

488.4 

166.2 

706.9 

1,847.0 

1,745.9 

(304.1) 

(11.0) 

(315.1) 

(497.4) 

(497.4) 

(812.5) 

1,034.5 

89.8 

199.2 

651.9 

346.0 

(252.4) 

745.5 

1,034.5 

(298.9)

(6.4)

(305.3)

(499.7)

(499.7)

(805.0)

940.9 

89.8 

199.2 

678.1 

4.4 

(30.6)

651.9 

940.9 

The financial statements on page 186 were approved by the Board of Directors on 12 March 2018 and signed on its behalf by 

Jean-Paul Luksic 
Chairman 

Ollie Oliveira 
Senior Independent Director  

186 
186

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Statement of changes in equity of the Parent Company for year ended 31 December 2017 

At 1 January 2016 

Comprehensive profit for the year 

Dividends 

At 31 December 2016  

Comprehensive profit for the year 

Dividends 

At 31 December 2017  

Share capital 
$m 

Share premium  
$m 

Retained earnings 
$m 

Total equity 
$m 

89.8 

199.2 

– 

– 

– 

– 

89.8 

199.2 

– 

– 

– 

– 

89.8 

199.2 

678.1 

4.4 

(30.6)

651.9 

346.0 

(252.4)

745.5 

967.1 

4.4 

(30.6)

940.9 

346.0 

(252.4)

1,034.5 

The ordinary shares rank after the preference shares in entitlement to dividend and on a winding-up. Each ordinary share carries one vote at any general meeting. 

Antofagasta plc is a company limited by shares, incorporated and domiciled in the United Kingdom at Cleveland House, 33 King Street, London. 

36A  Basis of preparation of the balance sheet and related notes of the Parent Company 
The Antofagasta plc Parent Company balance sheet and related notes have been prepared in accordance with FRS 101, which applies the recognition and 
measurement bases of IFRS with reduced disclosure requirements. The financial information has been prepared on an historical cost basis. The financial 
statements have been prepared on a going concern basis. The functional currency of the Company and the presentational currency adopted is US dollars. 

The following exemptions from the requirements of IFRS have been applied in the preparation of these financial statements, in accordance with FRS 101: 

–  Paragraphs 45(b) and 46 to 52 of IFRS 2, ‘Share-based payment’ (details of the number and weighted-average exercise prices of share options, and  

how the fair value of goods or services received was determined) 

–  IFRS 7, ‘Financial Instruments: Disclosures’ 

–  Paragraphs 91 to 99 of IFRS 13, ‘Fair value measurement’ (disclosure of valuation techniques and inputs used for fair value measurement of assets  

and liabilities) 

–  Paragraph 38 of IAS 1, ‘Presentation of financial statements’ comparative information requirements in respect of: 

(i)  paragraph 79(a)(iv) of IAS 1 

(ii)  paragraph 73(e) of IAS 16 Property, plant and equipment 

(iii) paragraph 118(e) of IAS 38 Intangible assets (reconciliations between the carrying amount at the beginning and end of the period) 

–  The following paragraphs of IAS 1, ‘Presentation of financial statements’: 

–  10(d), (statement of cash flows) 

–  10(f) (a statement of financial position as at the beginning of the preceding period when an entity applies an accounting policy retrospectively or makes  

a retrospective restatement of items in its financial statements, or when it reclassifies items in its financial statements) 

–  16 (statement of compliance with all IFRS) 

–  38A (requirement for minimum of two primary statements, including cash flow statements) 

–  38B-D (additional comparative information) 

–  40A-D (requirements for a third statement of financial position 

–  111 (cash flow statement information), and 

–  134-136 (capital management disclosures) 

–  IAS 7, ‘Statement of cash flows’ 

–  Paragraph 30 and 31 of IAS 8 ‘Accounting policies, changes in accounting estimates and errors’ (requirement for the disclosure of information when an 

entity has not applied a new IFRS that has been issued but is not yet effective) 

–  Paragraph 17 of IAS 24, ‘Related party disclosures’ (key management compensation) 

–  The requirements in IAS 24, ‘Related party disclosures’ to disclose related party transactions entered into between two or more members of a group. 

As permitted by section 408 of the Companies Act 2006, the profit and loss account of the Parent Company is not presented as part of these financial 
statements. The profit after tax for the year of the Parent Company amounted to $346.0 million (2016 – $4.4 million). 

antofagasta.co.uk 

187 
187

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

36  ANTOFAGASTA PLC – BALANCE SHEET OF THE PARENT COMPANY AND RELATED NOTES CONTINUED 
A summary of the principal accounting policies is set out below.  

36B  Principal accounting policies of the Parent Company 

A)  Currency translation 
The Company’s functional currency is the US dollar. Transactions in currencies other than the functional currency are translated at the exchange rate ruling  
at the date of the transaction. Monetary assets and liabilities, including amounts due from or to subsidiaries, denominated in currencies other than the 
functional currency are retranslated at year-end exchange rates. Gains and losses on retranslation are included in net profit or loss for the year. 

B)  Revenue recognition 
Dividends proposed by subsidiaries are recognised as income by the Company when they represent a present obligation of the subsidiaries, i.e. in the period 
in which they are formally approved for payment. 

Interest income is accrued on a time basis, by reference to the principal outstanding and the effective interest rate applicable, which is the rate that exactly 
discounts estimated future cash receipts through the expected life of the financial asset to that asset’s net carrying amount. 

C)  Dividends payable 
Dividends proposed are recognised when they represent a present obligation, i.e. in the period in which they are formally approved for payment. Accordingly,  
an interim dividend is recognised when paid and a final dividend is recognised when approved by shareholders. 

Investments in subsidiaries 

D) 
Investments in subsidiaries represent equity holdings in subsidiaries and long-term amounts owed by subsidiaries. Such investments are valued at cost less any 
impairment provisions. Investments are reviewed for impairment if events or changes in circumstances indicate that the carrying amount may not be recoverable. 
The recoverable amount of the investment is the higher of fair value less cost to dispose and value in use. As explained in Note 36D, amounts owed by subsidiaries 
due in currencies other than the functional currency are translated at year-end rates of exchange with any exchange differences taken to the profit and loss account. 

E)  Current asset investments and cash at bank and in hand 
Current asset investments comprise highly liquid investments that are readily convertible into known amounts of cash and which are subject to insignificant 
risk of changes in value, typically maturing within 12 months. 

Cash at bank and in hand comprise cash in hand and deposits repayable on demand. 

F)  Borrowings  
Interest-bearing loans and bank overdrafts are initially recorded at the proceeds received, net of direct issue costs. They are subsequently measured at amortised 
cost using the effective interest method, with interest expense recognised on an effective yield basis. The effective interest method is a method of calculating the 
amortised cost of a financial liability and of allocating interest expense over the relevant period. The effective interest rate is the rate that exactly discounts estimated 
future cash payments through the expected life of the financial liability, or, where appropriate, a shorter period. Finance charges, including premiums payable on 
settlement or redemption and direct issue costs, are accounted for on an accruals basis using the effective interest rate method. 

G)  Borrowings – preference shares 
The sterling-denominated preference shares issued by the Company carry a fixed rate of return without the right to participate in any surplus. They are accordingly 
classified as borrowings and translated into US dollars at year-end rates of exchange. Preference share dividends are included within finance costs. 

H)  Equity instruments – ordinary share capital and share premium 
Equity instruments issued are recorded at the proceeds received, net of direct issue costs. Equity instruments of the Company comprise its sterling-
denominated issued ordinary share capital and related share premium. 

As explained above, the presentational and the functional currency of the Company is US dollars, and ordinary share capital and share premium are 
translated into US dollars at historical rates of exchange based on dates of issue. 

36C  Employee Benefit Expense  

A)  Average number of employees 
The average number of employees was 5 (2016 – 4). 

B)  Aggregate remuneration 
The aggregate remuneration of the employees mentioned above was as follows: 

Wages and salaries 

Social security costs 

Pension contributions 

2017  
$m 

1.3 

0.2 

0.1 

1.6 

2016 
$m 

0.6 

0.1 

0.1 

0.8 

The above employee figures exclude Directors who receive Directors’ fees from Antofagasta plc. Details of fees payable to Directors are set out in the 
Remuneration Report. 

188 
188

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
36D  Subsidiaries 
A) 

Investment in subsidiaries 

Shares in subsidiaries at cost 

Amounts owed by subsidiaries due after more than one year 

1 January 2017 

New shares in subsidiaries 

31 December 2017 

2017 
$m 

60.6 

478.0 

538.6 

Loans 
$m 

478.0 

– 

478.0 

2016 
$m 

60.6 

478.0 

538.6 

total 
$m 

538.6 

– 

538.6 

Shares 
$m 

60.6 

– 

60.6 

The above amount of $478.0 million (2016 – $478.0 million) in respect of amounts owed by subsidiaries due after more than one year relates to long-term 
funding balances which form an integral part of the Company’s long-term investment in those subsidiary companies.  

B)  Trade and other receivables – amounts owed by subsidiaries due after one year 
At 31 December 2017, an amount of $500.0 million was owed to the Company by an indirect subsidiary, pursuant to a 10-year loan agreement. 

C)  Trade and other receivables – amounts owed by subsidiaries due within one year  
At 31 December 2017, amounts owed by subsidiaries due within one year were $54.2 million (2016 – $50.9 million). 

36E  Borrowings – preference shares 
The authorised, issued and fully paid preference share capital of the Company comprised 2,000,000 5% cumulative preference shares of £1 each at both  
31 December 2017 and 31 December 2016. As explained in Note 22B, the preference shares are measured in the balance sheet in US dollars at period-end 
rates of exchange. 

The preference shares are non-redeemable and are entitled to a fixed 5% cumulative dividend, payable in equal instalments in June and December of each 
year. On a winding-up, the preference shares are entitled to repayment and any arrears of dividend in priority to ordinary shareholders, but are not entitled  
to participate further in any surplus. Each preference share carries 100 votes (see Note 22A (xiv)) at any general meeting. 

antofagasta.co.uk 

189 
189

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

37  ALTERNATIVE PERFORMANCE MEASURES 
This Annual Report includes a number of alternative performance measures, in addition to IFRS amounts. These measures are included because they  
are considered to provide relevant and useful additional information to users of the financial statement. Set out below are definitions of these alternative 
performance measures, explanations as to why they are considered to be relevant and useful, and reconciliations to the IFRS figures. 

A)  UNDERLYING EARNINGS PER SHARE 
Underlying earnings per share is earnings per share from continuing operations, excluding exceptional items. This measure is reconciled to earnings per 
share from continuing and discontinued operations (including exceptional items) on the face of the income statement. This measure is considered to be  
useful as it provides an indication of the earnings generated by the on-going businesses of the Group, excluding the impact of exceptional items which  
are non-regular or non-operating in nature. 

B)  EBITDA 
EBITDA refers to Earnings Before Interest, Tax, Depreciation and Amortisation. EBITDA is calculated by adding back depreciation, amortisation, profit or loss 
on disposals and impairment charges to operating profit. This comprises 100% of the EBITDA from the Group´s subsidiaries, and the Group´s proportional 
share of the EBITDA of its associates and joint ventures. 

EBITDA is considered to provide a useful and comparable indication of the current operating earnings performance of the business, excluding the impact  
of the historic cost of property, plant and equipment or the particular financing structure adopted by the business.  

For the year ended 31 December 2017 

Los Pelambres 
$m 

Centinela 
$m 

Antucoya 
$m 

Zaldívar 
$m 

Exploration and 
evaluation 
$m 

Corporate and 
other items 
$m 

Railway  
and other transport 
services 
$m 

Mining 
$m 

1,217.3 

205.2 

5.6 

1,428.1 

– 

579.1 

276.6 

3.7 

859.4 

– 

131.2 

76.1 

– 

207.3 

– 

– 

– 

– 

– 

134.2 

(68.8)

(76.6)

1,782.2 

– 

– 

(68.8)

– 

6.7 

(0.9)

(70.8)

(0.9)

564.6 

8.4 

2,355.2 

133.3 

58.9 

16.5 

(0.1) 

75.3 

22.8 

Total 
$m 

1,841.1 

581.1 

8.3 

2,430.5 

156.1 

Operating profit 

Depreciation and amortisation 

(Loss)/gain on disposals 

EBITDA from subsidiaries 

Proportional share of the EBITDA 
from associates and JV 

EBITDA 

1,428.1 

859.4 

207.3 

134.2 

(68.8)

(71.7)

2,488.5 

98.1 

2,586.6 

Zaldívar 
$m 

Exploration and 
evaluation 
$m 

Corporate  
and other items 
$m 

Mining 
$m 

410.9 

563.0 

17.9 

456.6 

(44.3)

(62.3)

– 

– 

– 

5.2 

0.6 

– 

(44.3)

(56.5)

1,448.4 

– 

(44.3)

5.7 

(50.8)

90.0 

1,538.4 

Railway  
and other transport 
services 
$m 

56.1 

15.4 

1.8 

– 

73.3 

14.4 

87.7 

Total 
$m 

467.0 

578.4 

19.7 

456.6 

1,521.7 

104.4 

1,626.1 

– 

– 

– 

– 

– 

85.1 

85.1 

For the year ended 31 December 2016 

Operating profit 

Depreciation and amortisation 

Gain on disposals 

Exceptional impairment provision 

EBITDA from subsidiaries 

Proportional share of the EBITDA 
associates and JV 

EBITDA 

Los Pelambres 
$m 

Centinela 
$m 

484.9 

195.7 

0.2 

241.0 

921.8 

(0.8)

921.0 

246.0 

299.4 

17.1 

– 

562.5 

– 

562.5 

Antucoya 
$m 

(213.4)

62.7 

– 

215.6 

64.9 

– 

64.9 

190 
190

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
37  ALTERNATIVE PERFORMANCE MEASURES CONTINUED 

C)  Cash costs 
Cash costs are a measure of the cost of operating production expressed in terms of cents per pound of payable copper produced. 

This is considered to be a useful and relevant measure as it is a standard industry measure applied by most major copper mining companies which reflects 
the direct costs involved in producing each lb of copper. It therefore allows a straightforward comparison of the unit production cost of different mines, and 
allows an assessment of the position of a mine on the industry cost curve. It also provides a simple indication of the profitability of a mine when compared 
against the price of copper (per lb). 

Reconciliation of cash costs excluding tolling charges and by-product revenues: 

Total Group operating cost (Note 5) 

Less: 

Depreciation and amortisation (Note 5) 

Loss on disposal (Note 5) 

Provision against the carrying value of assets (Note 4) 

Elimination of non-mining operations: 

Corporate and other items – Total operating cost (Note 5) 

Exploration and evaluation – Total operating cost (Note 5) 

Railway and other transport services – Total operating cost (Note 5) 

Closure provision and other expenses not included within cash costs 

Total cost relevant to the mining operations’ cash costs 

Copper sales volumes – 2017/2016 (tonnes)1 

2017 
$m 

2016 
$M 

2,908.3 

3,154.7 

(581.9) 

(8.3) 

– 

(70.8) 

(68.8) 

(95.8) 

(39.8) 

(578.4)

(19.7)

(456.6)

(56.5)

(44.3)

(86.9)

(53.4)

2,042.9 

1,858.9 

657,700 

634,000 

Cash costs excluding tolling charges and by-product revenues ($ per tonne) 

3,106 

2,932 

Cash costs excluding tolling charges and by-product revenues ($ per lb) 

1.41 

1.33 

Reconciliation of cash costs before deducting by-products: 

Tolling charges – copper – Los Pelambres (Note 6) 

Tolling charges – copper – Centinela (Note 6) 

Tolling charges – copper – total 

Copper sales volumes –2017/2016 (tonnes)1 

Tolling charges ($ per tonne) 

Tolling charges ($ per lb) 

Cash costs excluding tolling charges and by-product revenues ($ per lb) 

Tolling charges ($ per lb) 

Cash costs before deducting by-products ($ per lb) 

1.  2016 and 2017 includes Zaldívar, 2016 excluded Antucoya Q1. 

179.5 

98.2 

277.7 

192.2 

108.9 

301.1 

657,700 

634,000 

422 

0.19 

1.41 

0.19 

1.60 

475 

0.22 

1.33 

0.21 

1.54 

antofagasta.co.uk 

191 
191

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FINANCIAL STATEMENTS CONTINUED 

NOTES TO THE FINANCIAL STATEMENTS CONTINUED 

Reconciliation of cash costs (net of by-products): 

Gold revenue – Los Pelambres (Note 5) 

Gold revenue – Centinela (Note 5) 

Molybdenum revenue – Los Pelambres (Note 5) 

Silver revenue – Los Pelambres (Note 5) 

Silver revenue – Centinela (Note 5) 

Total by-product revenue 

2017 
$m 

68.7 

209.7 

168.5 

37.7 

20.5 

505.1 

2016 
$m 

78.5 

261.2 

94.0 

46.1 

20.0 

499.8 

Copper sales volumes –2017/2016 (tonnes)1 

657,700 

634,000 

By-product revenues ($ per tonne) 

By-product revenues ($ per lb) 

Cash costs before deducting by-products ($ per lb) 

By-product revenue ($ per lb) 

Cash costs (net of by-products) ($ per lb) 

1.  2016 and 2017 includes Zaldivar, 2016 excluded Antucoya Q1. 

768 

0.35 

1.60 

(0.35) 

1.25 

788 

0.35 

1.54 

(0.34)

1.20 

The totals in the tables above may include some small apparent differences as the specific individual figures have not been rounded.  

D)  Attributable cash, cash equivalents and liquid investments, borrowings and net debt 
Attributable cash, cash equivalents and liquid investments, borrowings and net debt reflects the proportion of those balances which are attributable to the  
equity holders of the Company, after deducting the proportion attributable to the non-controlling interests in the Group’s subsidiaries. 

This is considered to be a useful and relevant measure as the majority of the Group’s cash tends to be held at the corporate level and therefore 100% 
attributable to the equity holders of the Company, whereas the majority of the Group’s borrowings tends to be at the level of the individual operations,  
and hence only a proportion is attributable to the equity holders of the Company.  

Cash, cash equivalents and liquid investments: 

Los Pelambres 

Centinela 

Antucoya  

Corporate 

Railway and other transport services 

Total (Note 24) 

Borrowings: 

Los Pelambres (Note 22) 

Centinela (Note 22) 

Antucoya (Note 22) 

Corporate (Note 22) 

Railway and other transport services (Note 22) 

2017 

Total 
amount 

Attributable 
share 

Attributable 
amount 

Total  
amount 

2016 

Attributable  
share 

Attributable 
amount 

241.8 

353.0 

158.9 

1,441.2 

57.4 

2,252.3 

(286.9)

(990.4)

(844.0)

(527.0)

(60.4)

60% 

70% 

70% 

100% 

100% 

60% 

70% 

70% 

100% 

100% 

145.1 

247.1 

111.2 

1,441.2 

57.4 

143.0  

384.0  

152.9  

1,328.1  

40.5  

2,002.0 

2,048.5  

(172.1)

(693.3)

(590.8)

(524.0)

(63.4)

(391.7) 

(1,127.4) 

(985.3) 

(524.8) 

(91.0) 

60% 

70% 

70% 

100% 

100% 

60% 

70% 

70% 

100% 

100% 

85.8 

268.8 

107.0 

1,328.1 

40.5 

1,830.2 

(235.0)

(789.2)

(689.7)

(524.8)

(91.0)

Total (Notes 22 and 31) 

(2,708.7)

(2,043.6)

(3,120.2) 

(2,329.7)

Net debt 

(456.4)

(41.6)

(1,071.7) 

(499.5)

192 
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Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FIVE-YEAR SUMMARY  

Consolidated Balance Sheet 

Intangible asset 

Property plant & equipment 

Investment property 

Inventories 

Investment in associates and joint ventures 

Trade and other receivables 

Derivative financial instruments 

Available for sale investments 

Deferred tax assets 

Non-current assets 

Current assets 

Current liabilities 

Non current liabilities 

Share capital 

Share premium 

2017 
$m 

2016 
$m 

2015 
$m 

2014 
$m 

2013 
$m 

150.1 

 150.1 

 150.1 

 118.6 

 133.0 

9,000.6 

 8,737.5 

 8,601.1 

 8,227.1 

 7,424.8 

3.5 

111.1 

 2.6 

 157.3 

1,069.7 

 1,086.6 

67.0 

0.2 

6.5 

69.1 

 66.7 

 0.2 

 4.6 

 82.8 

 2.0 

 263.9 

 1,149.1 

 292.9 

 –  

 2.7  

 124.6  

 2.6 

 247.8 

 198.5 

 239.5 

 – 

 15.6 

 104.6 

 3.3 

 252.7 

 176.0 

 180.8 

 – 

 16.6 

 76.9 

10,477.8 

 10,288.4 

 10,583.9  

 9,153.9 

 8,263.3 

3,731.9 

 3,435.4 

 2,953.2  

 3,661.2 

 4,126.3 

(1,562.1)

 (1,554.0)

 (1,438.6) 

 (1,163.4)

 (1,130.6)

(3,506.0)

 (3,660.1)

 (3,581.7) 

 (3,617.4)

 (2,596.2)

9,141.6 

 8,509.7 

 8,519.3 

 8,034.7 

 8,663.6 

89.8 

199.2 

 89.8 

 199.2 

 89.8 

 199.2 

 89.8 

 199.2 

 89.8 

 199.2 

Reserves (retained earnings and hedging, translation and fair value reserves) 

7,029.5 

 6,526.3 

 6,357.1 

 5,884.7 

 6,435.5 

Equity attributable to equity holders of the Company 

Non-controlling interests 

Consolidated income statement 

Group revenue 

7,318.5 

1,823.1 

9,141.6 

 6,815.3 

 1,694.4 

 6,646.1 

 1,873.2 

 6,173.7 

 1,861.0 

 6,724.5 

 1,939.1 

 8,509.7 

 8,519.3 

 8,034.7 

 8,663.6 

2017 
$m  

2016 
 $m  

2015 
 $m  

2014 
$m  

2013 
$m 

4,749.4 

 3,621.7 

 3,225.7 

 4,810.2 

 5,509.2 

Total profit from operations and associates 

1,900.8 

 355.7 

 283.2 

 1,608.5 

 2,137.8 

Profit before tax 

Income tax expense 

Profit for the financial year from continuing operations 

Profit for the financial year from discontinued operations 

Profit for the year 

Non-controlling interests 

Net earnings (profit attributable to equity holders of the Company) 

1,830.8 

(633.6)

1,197.2 

0.5 

1,197.7 

(447.0)

750.7 

 284.6 

 (108.6)

 176.0 

 38.3 

 214.3 

 (56.3)

 158.0 

 242.8 

 1,558.5 

 2,076.5 

 (154.4) 

 (703.6)

 (843.2)

 88.4 

 854.9 

 1,233.3 

 613.3 

 701.7 

 (4.2)

 850.7

 6.5 

 1,239.8 

 (93.5) 

 (390.9)

 (580.2)

 608.2 

 459.8 

 659.6 

EBITDA 

2,586.6 

 1,626.1 

 910.1 

 2,102.9 

 2,625.8 

Earnings per share 

Basic and diluted earnings per share 

2017 
cents  

2016 
cents  

2015 
cents  

2014 
cents  

2013 
cents  

76.2 

 16.0 

 61.7 

 46.6 

 66.9 

antofagasta.co.uk 

193 
193

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FIVE-YEAR SUMMARY CONTINUED 

Dividends per share proposed in relation to the Year 

Ordinary dividends (interim and final) 

Special dividends 

2017 
cents 

50.9 

– 

50.9 

2016 
 cents  

 18.4 

 – 

 18.4 

2015 
 cents  

2014 
 cents  

 3.1  

 –  

 3.1  

 21.5  

 –  

 21.5  

2013 
 cents  

 95.0 

 –

 95.0 

Dividends per share paid in the year and deducted from equity 

25.6

 3.1 

 12.9  

 97.8  

 90.0 

Consolidated cash flow Statement 

Cash flow from operations 

Interest paid 

Income tax paid 

Net cash from operating activities 

2017 
 $m  

2016 
 $m  

2015  
$m  

2014  
$m  

2013 
 $m  

2,495.0 

 1,457.3 

 858.3  

 2,507.8  

 2,659.2 

(59.1)

(338.4)

(2,097.5)

 (46.3)

 (272.6)

 1,138.4 

 (38.6) 

 (45.4) 

 (57.2)

 (427.1) 

 (641.5) 

 (896.5)

 392.6  

 1,820.9  

 1,705.5 

Investing activities 

Acquisition and disposal of subsidiaries, joint venture and associates 

Dividends from associates 

Available-for-sale investments, investing activities and recovery of VAT 

Purchases and disposals of intangible assets, property, plant and equipment  

Interest received 

Net cash used in investing activities 

3.1 

81.1 

113.6 

(892.1)

14.3 

 30.0 

 10.2 

 (425.2)

 (29.9) 

 12.1  

 414.8  

 –  

 20.0  

 372.7  

 – 

– 

 278.9 

 (794.6)

 (1,046.9) 

 (1,613.7) 

 (1,334.2)

 14.4 

 11.0  

 16.5  

 14.0 

(679.3)

 (1,165.2)

 (638.9) 

 (1,204.5) 

 (1,041.3)

Financing activities 

Dividends paid to equity holders of the Company 

Dividends paid to preference holders and non-controlling interests 

New borrowings less repayment of borrowings and finance leases 

Net cash used in financing activities 

(252.3)

(320.1)

(487.0)

(1,059.4)

 (30.6)

 (127.2) 

 (964.2) 

 (260.0)

 (80.0) 

 (412.4) 

 214.3 

 (76.3)

 452.0  

 244.8  

 1,019.4  

 (357.2) 

 (1,845.5)

 (975.0)

 (452.3)

 (418.2)

Net (decrease)/increase in cash and cash equivalents 

358.8 

 (103.1)

 (1.5) 

 259.2  

 (1,181.3)

Consolidated net cash 

Cash, cash equivalents and liquid investments 

2,252.3 

 2,048.5 

 1,731.6  

 2,374.5  

 2,685.1 

2017 
 $m  

2016 
 $m  

2015  
$m  

2014  
$m  

2013 
 $m  

Short-term borrowings 

Medium and long-term borrowings 

(753.6)

 (836.8)

 (758.9) 

 (284.5) 

 (341.0)

(1,955.1)

 (2,283.4)

 (1,996.2) 

 (2,091.6) 

 (1,032.9)

(2,708.7)

 (3,120.2)

 (2,755.1) 

 (2,376.1) 

 (1,373.9)

Net (debt)/cash at the year-end 

(456.4)

 (1,071.7)

 (1,023.5) 

 (1.6) 

 1,311.2 

194 
194

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PRODUCTION STATISTICS 

 Production and sales volumes, realised price and cash cost by mine 

Copper 

Los Pelambres 

Centinela 

Antucoya 

Michilla 

Zaldívar (attributable basis – 50%) 

Group total 

Group weighted average (net cash cost) 

Group weighted average (excluding tolling charges and 
before by-products) 

Group weighted average (before by-products) 

Cash cost at Los Pelambres comprises 

Cash cost before by-product credits 

By-product credits (principally molybdenum and gold) 

Net cash cost 

Cash cost at Centinela comprises 

Cash cost before by-product credits 

By-product credits (principally gold) 

Net cash cost 

LME average 

Gold 

Los Pelambres 

Centinela Concentrates 

Group total 

Market average price 

Molybdenum 

Los Pelambres 

Market average price 

Production 

2017 
‘000 
tonnes 

2016 
‘000 
tonnes 

2017 
‘000 
tonnes 

Sales 

2016 
‘000 
tonnes 

 343.8 

 355.3 

 344.8 

 351.6 

 228.3 

 236.2 

 232.2 

 227.6 

80.5 

 66.2 

– 

– 

 51.7 

 51.7 

 80.8 

– 

 51.3 

 66.6 

 0.9 

 51.7 

 704.3 

 709.4 

 709.1 

 698.4 

Net cash costs 

Realised prices 

2017 
‘000 
$/lb 

3.06 

2.96 

2.86 

– 

– 

2016 
‘000 
$/LB 

2.35 

2.32 

2.30 

– 

– 

3.00 

2.33 

2017 
‘000 
$/lb 

1.02  

1.37  

1.68  

– 

2016 
‘000 
$/lb 

1.06  

1.19  

1.83  

– 

1.62  

1.55  

1.25  

1.41  

1.20  

1.33  

1.60  

1.54  

1.44  

1.36  

(0.42) 

(0.30) 

1.02  

1.06  

1.81  

1.75  

(0.45) 

(0.56) 

1.36  

1.19  

Production 

2016 
‘000 
tonnes 

2017 
‘000 
tonnes 

‘000 
ounces  

55.4 

157.0 

212.4 

55.4 

‘000 
ounces 

57.8 

213.0 

270.8 

57.8 

2017 
‘000 
tonnes 

‘000 
ounces 

54.3 

163.9 

218.2 

54.3 

Sales 

2016 
‘000 
tonnes 

‘000 
ounces 

62.8 

208.6 

271.4 

62.8 

‘000 
tonnes 

‘000 
tonnes 

‘000 
tonnes 

‘000 
tonnes 

10.5 

7.1 

9.6 

7.2 

Realised prices 

2017 
‘000 
$/lb 

2016 
‘000 
$/LB 

2.80 

2.21 

‘000 
$/oz 

1.270 

1.284 

1.280 

1.270 

1.258 

‘000 
$/lb 

8.7 

8.2 

‘000 
$/oz 

1.253 

1.257 

1.256 

1.253 

1.248 

‘000 
$/lb 

6.8 

6.5 

antofagasta.co.uk 

195 
195

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ORE RESERVES AND MINERAL RESOURCES ESTIMATES 
At 31 December 2017 

INTRODUCTION 
The ore reserves and mineral resources estimates presented in this report 
comply with the requirements of the Australasian Code for Reporting of 
Exploration Results, Mineral Resources and Ore Reserves 2012 edition (the 
JORC Code) which has been used by the Group as minimum standard for 
the preparation and disclosure of the information contained herein. The 
definitions and categories of Ore Reserves and Mineral Resources are set 
out below.  

An ‘Indicated Mineral Resource’ is that part of a Mineral Resource for 
which tonnage, densities, shape, physical characteristics, grade and mineral 
content can be estimated with a reasonable level of confidence. It is based 
on exploration, sampling and testing information gathered through 
appropriate techniques from locations such as outcrops, trenches, pits, 
workings and drill holes. The locations are too widely or inappropriately 
spaced to confirm geological and/or grade continuity but are spaced closely 
enough for continuity to be assumed.  

The information on ore reserves and mineral resources was prepared by or 
under the supervision of Competent Persons as defined in the JORC Code. 
The Competent Persons have sufficient experience relevant to the style of 
mineralisation and type of deposit under consideration and to the activity 
which they are undertaking. The Competent Persons consent to the 
inclusion in this report of the matters based on their information in the form 
and context in which it appears. The Competent Person for Exploration 
Results and Mineral Resources is Aquiles Gonzalez (CP, Chile), Manager of 
Mineral Resource Evaluation for Antofagasta Minerals S.A. The Competent 
Person for Ore Reserves is Murray Canfield (P.Eng. Ontario), Technical 
Manager of Mining for Antofagasta Minerals S.A.  

The Group’s operations and projects are subject to a comprehensive 
programme of audits aimed at providing assurance in respect of ore 
reserves and mineral resources estimates. The audits are conducted by 
suitably qualified Competent Persons from within a particular division, 
another division of the Company or from independent consultants.  

The ore reserves and mineral resources estimates represent full reserves 
and resources, with the Group’s attributable share for each mine shown in 
the ‘Attributable Tonnage’ column. The Group’s economic interest in each 
mine is disclosed in the notes following the estimates on pages 204 to 205. 
The totals in the table may include some small apparent differences as the 
specific individual figures have not been rounded.  

DEFINITIONS AND CATEGORIES OF ORE RESERVES AND MINERAL 
RESOURCES 
A ‘Mineral Resource’ is a concentration or occurrence of material of 
intrinsic economic interest in or on the Earth’s crust in such form, quality 
and quantity that there are reasonable prospects for eventual economic 
extraction. The location, quantity, grade, geological characteristics and 
continuity of a Mineral Resource are known, estimated or interpreted from 
specific geological evidence and knowledge. Mineral Resources are sub-
divided, in order of increasing geological confidence, into Inferred, Indicated 
and Measured categories.  

An ‘Inferred Mineral Resource’ is that part of a Mineral Resource for which 
tonnage, grade and mineral content can be estimated with a low level of 
confidence. It is inferred from geological evidence and assumed but not 
verified geological and/or grade continuity. It is based on information 
gathered through appropriate techniques from locations such as outcrops, 
trenches, pits, workings and drill holes which may be limited or of uncertain 
quality and reliability.  

A ‘Measured Mineral Resource’ is that part of a Mineral Resource for which 
tonnage, densities, shape, physical characteristics, grade and mineral 
content can be estimated with a high level of confidence. It is based on 
detailed and reliable exploration, sampling and testing information gathered 
through appropriate techniques from locations such as outcrops, trenches, 
pits, workings and drill holes. The locations are spaced closely enough to 
confirm geological and grade continuity.  

An ‘Ore Reserve’ is the economically mineable part of a Measured and/or 
Indicated Mineral Resource. It includes diluting materials and allowances for 
losses, which may occur when the material is mined. Appropriate 
assessments and studies have been carried out, and include consideration of 
and modification by realistically assumed mining, metallurgical, economic, 
marketing, legal, environmental, social and governmental factors. These 
assessments demonstrate at the time of reporting that extraction could 
reasonably be justified. Ore Reserves are sub-divided in order of increasing 
confidence into Probable Ore Reserves and Proved Ore Reserves.  

A ‘Probable Ore Reserve’ is the economically mineable part of an Indicated, 
and in some circumstances, a Measured Mineral Resource. It includes 
diluting materials and allowances for losses which may occur when the 
material is mined. Appropriate assessments and studies have been carried 
out, and include consideration of and modification by realistically assumed 
mining, metallurgical, economic, marketing, legal, environmental, social and 
governmental factors. These assessments demonstrate at the time of 
reporting that extraction could reasonably be justified.  

A ‘Proved Ore Reserve’ is the economically mineable part of a Measured 
Mineral Resource. It includes diluting materials and allowances for losses 
which may occur when the material is mined. Appropriate assessments and 
studies have been carried out, and include consideration of and modification 
by realistically assumed mining, metallurgical, economic, marketing, legal, 
environmental, social and governmental factors. These assessments 
demonstrate at the time of reporting that extraction could reasonably  
be justified.  

198 
196

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
ORE RESERVES ESTIMATES 

 Group Subsidiaries 

Ore reserves 

Los Pelambres (see note (a)) 

Proved 

Probable 

Total 

Centinela (see note (b)) 

Centinela Cathodes (oxides) 

Proved 

Probable 

Sub-Total 

Centinela Concentrates 
(sulphides) 

Proved 

Probable 

Sub-Total 

Proved 

Probable 

Total 

Encuentro Oxides (see note (c))  

Proved 

Probable 

Total 

Antucoya (see note (d)) 

Proved 

Probable 

Total 

Tonnage 
(millions of tonnes) 

 2017 

2016 

2017 

Copper 
(%) 

2016 

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

2016 

719.6 

473.8 

661.9 

595.7 

1,193.4 

1,257.6 

36.4 

155.1 

191.5 

38.8 

151.1 

189.9 

573.9 

549.8 

1,299.5 

1,252.6 

1,873.4 

1,802.3 

610.3 

588.5 

1,454.6 

1,403.7 

2,064.9 

1,992.2 

101.5 

10.7 

112.2 

336.9 

339.5 

676.4 

110.0 

5.3 

115.3 

360.1 

337.0 

697.0 

0.62 

0.58 

0.60 

0.63 

0.34 

0.39 

0.48 

0.40 

0.42 

0.49 

0.39 

0.42 

0.54 

0.43 

0.53 

0.36 

0.30 

0.33 

0.63 

0.59 

0.61 

0.021 

0.017 

0.020 

0.023 

0.016 

0.020 

0.05 

0.05 

0.05 

0.05 

0.04 

0.05 

431.8 

284.3 

716.0 

397.1 

357.4 

754.6 

0.66 

0.35 

0.42 

0.50 

0.41 

0.44 

0.51 

0.41 

0.44 

0.55 

0.41 

0.54 

0.36 

0.30 

0.33 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

25.5 

108.6 

134.0 

27.1 

105.8 

132.9 

0.012 

0.012 

0.012 

0.011 

0.012 

0.012 

0.19 

0.12 

0.14 

0.20 

0.13 

0.15 

401.7 

909.6 

384.8 

876.8 

1,311.4 

1261.6 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

427.2 

1,018.2 

412.0 

982.6 

1,445.4 

1,394.5 

101.5 

10.7 

112.2 

235.8 

237.6 

473.4 

110.0 

5.3 

115.3 

252.1 

235.9 

487.9 

– 

2,747.1 

2,752.4 

Total Group Subsidiaries  

4,046.8 

4,062.2 

0.46 

0.48 

 Group Joint Ventures 

Zaldívar (see note (n))  

Proved 

Probable 

Total Group Joint Ventures  

Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

265.0 

163.5 

428.5 

285.3 

175.5 

460.8 

0.49 

0.54 

0.51 

Copper 
(%) 

2016 

0.50 

0.54 

0.51 

Total Group  

4,475.3 

4,523.0 

0.47 

0.48 

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

 2017 

2016 

2017 

2016 

 2017 

2016 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

132.5 

81.8 

142.7 

87.7 

214.2 

230.4 

2,961.3 

2,982.8 

antofagasta.co.uk 

199 
197

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
ORE RESERVES AND MINERAL RESOURCES ESTIMATES CONTINUED 
At 31 December 2017 

MINERAL RESOURCES ESTIMATES (INCLUDING ORE RESERVES) 

 Group Subsidiaries  

2017 

2016 

2017 

Tonnage  
(millions of tonnes) 

Los Pelambres (see note (a)) 
Sulphides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

Los Pelambres Total 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

Centinela (see note (b)) 

1,190.9 
2,163.0 
3,353.8 
2,670.2 
6,024.1 

1,190.9 
2,163.0 
3,353.8 
2,670.2 
6,024.1 

1,095.7 
2,260.4 
3,356.1 
2,728.4 
6,084.5 

1,095.7 
2,260.4 
3,356.1 
2,728.4 
6,084.5 

Centinela Cathodes (Oxides) 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

46.0 
242.1 
288.1 
19.3 
307.5 

82.9 
235.6 
318.6 
12.1 
330.7 

Centinela Concentrates 
(Sulphides) 

Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Centinela Total 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

Encuentro (see note (c)) 
Oxides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Sulphides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Encuentro Total 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

583.6 
1619.3 
2,202.9 
974.8 
3,177.7 

629.7 
1,861.3 
2,491.0 
994.1 
3,485.2 

579.5 
1,662.3 
2,241.8 
1,040.4 
3,282.2 

662.4 
1,897.9 
2,560.4 
1,052.5 
3,612.9 

124.7 
50.8 
175.5 
1.0 
176.4 

407.1 
457.8 
864.9 
76.0 
940.9 

134.4 
43.8 
178.1 
1.2 
179.3 

407.7 
478.9 
886.6 
92.5 
979.1 

531.7 
508.7 
1,040.4 
77.0 
1,117.4 

542.0 
522.7 
1,064.7 
93.7 
1,158.4 

200 
198

Antofagasta Annual Report 2017 

0.59
0.52 
0.54
0.46 
0.51

0.59 
0.52 
0.54
0.46 
0.51

0.52 
0.35 
0.38
0.42 
0.38

0.47 
0.38 
0.41
0.31 
0.38

0.48 
0.38 
0.40
0.31 
0.38

0.51 
0.34 
0.46
0.34
0.46 

0.53 
0.36 
0.44
0.33 
0.43

0.52 
0.36 
0.44
0.33 
0.44

Copper 
(%) 

2016 

0.59
0.52 
0.54
0.46 
0.51

0.59 
0.52 
0.54
0.46 
0.51

0.55 
0.35 
0.40
0.37 
0.40

0.48 
0.38 
0.41
0.31 
0.38

0.49 
0.38 
0.41
0.31 
0.38

0.52 
0.31 
0.47
0.31
0.47 

0.53 
0.36 
0.44
0.32 
0.42

0.53 
0.35 
0.44
0.32 
0.43

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

2016 

0.021
0.015 
0.017
0.015 
0.016

0.021 
0.015 
0.017
0.015 
0.016

– 
– 
–
– 
–

0.022
0.015 
0.018
0.015 
0.016

0.022 
0.015 
0.018
0.015 
0.016

– 
– 
–
– 
–

0.05
0.05 
0.05
0.06 
0.05

0.05 
0.05 
0.05
0.06 
0.05

– 
– 
–
– 
–

0.05 
0.05 
0.05 
0.06 
0.06 

0.05 
0.05 
0.05 
0.06 
0.06 

714.5 
1,297.8 
2,012.3 
1,602.1 
3,614.4 

714.5 
1,297.8 
2,012.3 
1,602.1 
3,614.4 

657.4
1,356.2 
2,013.7
1,637.0 
3,650.7

657.4 
1,356.2 
2,013.7
1,637.0 
3,650.7

– 
– 
– 
– 
– 

32.2 
169.5 
201.7 
13.5 
215.2 

58.1 
165.0 
223.0
8.5 
231.5

0.011 
0.012 
0.012
0.011 
0.011

0.011 
0.012 
0.012
0.011 
0.011

0.19 
0.12 
0.14
0.09 
0.12

0.19 
408.5 
0.12 
1,133.5 
0.14 
1,542.0 
0.09 
682.4 
0.12  2,224.4 

405.6 
1,163.6 
1,569.3
728.3 
2,297.5

463.7 
1,328.6 
1,792.3
736.8 
2,529.0

134.4 
43.8 
178.1
1.2
179.3 

407.7 
478.9 
886.6
92.5 
979.1

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

0.21 
0.18 
0.19 
0.15 
0.19 

440.8 
1,302.9 
1,743.7 
695.9 
2,439.6 

124.7 
50.8 
175.5 
1.0 
176.4 

407.1 
457.8 
864.9 
76.0 
940.9 

– 
– 
– 
– 
– 

531.7 
508.7 
1,040.4 
77.0 
1,117.4 

542.0 
522.7 
1,064.7
93.7 
1,158.4

– 
– 
–
– 
–

– 
– 
–
–
– 

– 
– 
–
– 
–

– 
– 
–
–
– 

0.015 
0.014 
0.015
0.012 
0.015

0.015 
0.014 
0.015
0.012 
0.015

– 
– 
–
– 
–

– 
– 
–
– 
–

– 
– 
–
– 
–

– 
– 
–
–
– 

0.21 
0.13 
0.17
0.16 
0.17

– 
– 
–
– 
–

Antofagasta plc Annual Report 2017  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 Group Subsidiaries  

2017 

2016 

2017 

Tonnage 
(millions of tonnes) 

Antucoya (see note (d))  
Oxides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

Antucoya Total 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

Polo Sur (see note (e))  
Oxides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Sulphides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Polo Sur Total 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

Penacho Blanco (see note (f))  

Oxides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Sulphides 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Sub-Total 

Penacho Blanco Total 
Measured 
Indicated 
Measured + Indicated  
Inferred 
Total 

378.8 
477.6 
856.5 
435.3 
1,291.8 

378.8 
477.6 
856.5 
435.3 
1,291.8 

– 
86.8 
86.8 
38.8 
125.6 

– 
704.1 
704.1 
684.8 
1,388.9 

– 
790.9 
790.9 
723.6 
1,514.5 

– 
– 
– 
18.3 
18.3 

– 
– 
– 
321.9 
321.9 

– 
– 
– 
340.2 
340.2 

412.4
472.8 
885.1
410.5 
1,295.7

412.4
472.8 
885.1
410.5 
1,295.7

–
86.8 
86.8
38.8 
125.6

–
704.1 
704.1
684.8 
1,388.9

–
790.9 
790.9
723.6 
1,514.5

–
– 
–
18.3 
18.3

–
– 
–
321.9 
321.9

–
– 
–
340.2 
340.2

0.34
0.29 
0.32
0.27 
0.30

0.34
0.29 
0.32
0.27 
0.30

–
0.43 
0.43
0.35 
0.40

–
0.37 
0.37
0.30 
0.34

–
0.38 
0.38
0.31 
0.34

–
– 
–
0.29 
0.29

–
– 
–
0.38 
0.38

–
– 
–
0.37 
0.37

Copper 
(%) 

2016 

0.34
0.30 
0.32
0.27 
0.30

0.34
0.30 
0.32
0.27 
0.30

–
0.43 
0.43
0.35 
0.40

–
0.37 
0.37
0.30 
0.34

–
0.38 
0.38
0.31 
0.34

–
– 
–
0.29 
0.29

–
– 
–
0.38 
0.38

–
– 
–
0.37 
0.37

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

2016 

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
– 
–

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

–
0.007 
0.007
0.007 
0.007

–
0.007 
0.007
0.007 
0.007

– 
0.06 
0.06 
0.05 
0.05 

– 
0.06 
0.06 
0.05 
0.05 

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
– 
–

–
– 
–
0.002 
0.002

–
– 
–
0.000 
0.000

–
– 
–
– 
–

–
– 
–
– 
–

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
0.05 
0.05 

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
– 
– 

– 
– 
– 
0.05 
0.05 

– 
– 
– 
– 
– 

265.2
334.4 
599.5
304.7 
904.3

265.2
334.4 
599.5
304.7 
904.3

–
86.8 
86.8
38.8 
125.6

–
704.1 
704.1
684.8 
1,388.9

–
790.9 
790.9
723.6 
1,514.5

–
– 
–
9.3 
9.3

–
– 
–
164.2 
164.2

–
– 
–
173.5 
173.5

288.6
331.0 
619.6
287.4 
907.0

288.6
331.0 
619.6
287.4 
907.0

–
86.8 
86.8
38.8 
125.6

–
704.1 
704.1
684.8 
1,388.9

–
790.9 
790.9
723.6 
1,514.5

–
– 
–
9.3 
9.3

–
– 
–
164.2 
164.2

–
– 
–
173.5 
173.5

antofagasta.co.uk 

201 
199

antofagasta.co.ukFINANCIAL STATEMENTS 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
ORE RESERVES AND MINERAL RESOURCES ESTIMATES CONTINUED 
At 31 December 2017 

MINERAL RESOURCES ESTIMATES (INCLUDING ORE RESERVES) CONTINUED 

 Group Subsidiaries  

Mirador (see note (g))  

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Sulphides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Mirador Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Llano (see note (h))  

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Llano Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Paleocanal (see note (i))  

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Paleocanal Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Tonnage  
(millions of tonnes) 

2017 

2016 

2017 

7.3 

28.6 

35.9 

9.1 

44.9 

31.2 

16.8 

48.0 

2.5 

50.5 

38.5 

45.4 

83.9 

11.5 

95.4 

29.9 

6.5 

36.3 

6.1 

42.4 

29.9 

6.5 

36.3 

6.1 

42.4 

12.4 

6.6 

19.0 

2.8 

21.8 

12.4 

6.6 

19.0 

2.8 

21.8 

0.7 

17.6 

18.3 

25.6 

44.0 

1.2 

23.1 

24.2 

14.1 

38.3 

1.9 

40.7 

42.6 

39.7 

82.3 

27.9 

4.0 

31.9 

0.6 

32.5 

27.9 

4.0 

31.9 

0.6 

32.5 

11.3 

4.4 

15.7 

1.3 

17.0 

11.3 

4.4 

15.7 

1.3 

17.0 

0.64 

0.28 

0.35 

0.27 

0.34 

0.35 

0.28 

0.32 

0.26 

0.32 

0.40 

0.28 

0.34 

0.27 

0.33 

0.50 

0.43 

0.49 

0.32 

0.46 

0.50 

0.43 

0.49 

0.32 

0.46 

0.50 

0.41 

0.47 

0.33 

0.45 

0.50 

0.41 

0.47 

0.33 

0.45 

Copper 
(%) 

2016 

0.42 

0.36 

0.36 

0.29 

0.32 

0.40 

0.35 

0.35 

0.28 

0.33 

0.41 

0.36 

0.36 

0.28 

0.32 

0.52 

0.42 

0.51 

0.42 

0.51 

0.52 

0.42 

0.51 

0.42 

0.51 

0.50 

0.42 

0.48 

0.30 

0.46 

0.50 

0.42 

0.48 

0.30 

0.46 

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

2016 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

0.006 

0.008 

0.007 

0.008 

0.007 

0.006 

0.005 

0.005 

0.007 

0.006 

– 

– 

– 

– 

– 

0.13 

0.08 

0.11 

0.06 

0.11 

– 

– 

– 

– 

– 

0.15 

0.13 

0.13 

0.09 

0.11 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

5.7 

22.3 

28.0 

7.1 

35.1 

31.2 

16.8 

48.0 

2.5 

50.5 

36.9 

39.1 

76.1 

9.5 

85.6 

21.1 

4.6 

25.7 

4.3 

30.0 

21.1 

4.6 

25.7 

4.3 

30.0 

11.0 

5.9 

17.0 

2.5 

19.5 

11.0 

5.9 

17.0 

2.5 

19.5 

0.6 

13.8 

14.3 

20.0 

34.3 

1.2 

23.1 

24.2 

14.1 

38.3 

1.8 

36.8 

38.6 

34.1 

72.7 

19.8 

2.8 

22.6 

0.4 

23.0 

19.8 

2.8 

22.6 

0.4 

23.0 

10.1 

3.9 

13.9 

1.2 

15.1 

10.1 

3.9 

13.9 

1.2 

15.1 

202 
200

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017  
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 Group Subsidiaries  

2017 

2016 

2017 

Tonnage 
(millions of tonnes) 

Los Volcanes (see note (j))  

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Sulphides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Los Volcanes Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Brujulina (see note (k))  

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Brujulina Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Sierra (see note (l))  

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Sierra Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Copper 
(%) 

2016 

– 

– 

– 

0.31 

0.31 

– 

– 

– 

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

2016 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

15.7 

15.7 

– 

– 

– 

– 

– 

– 

15.5 

15.5 

– 

– 

– 

– 

– 

– 

– 

– 

– 

30.8 

30.8 

30.4 

30.4 

– 

– 

– 

– 

– 

– 

– 

– 

– 

0.31 

0.31 

– 

– 

– 

1,873.4 

1,873.4 

1,873.4 

1,873.4 

0.50 

0.50 

0.50 

0.50 

0.011 

0.011 

0.011 

0.011 

0.03 

0.03 

0.00 

0.00 

955.4 

955.4 

955.4 

955.4 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

1,904.2 

1,903.8 

1,904.2 

1,903.8 

0.50 

0.50 

0.50 

0.50 

– 

– 

– 

87.2 

87.2 

– 

– 

– 

87.2 

87.2 

– 

– 

– 

52.0 

52.0 

– 

– 

– 

52.0 

52.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

– 

– 

– 

0.49 

0.49 

0.00 

0.00 

– 

– 

– 

– 

– 

– 

0.49 

0.49 

0.00 

0.00 

– 

– 

– 

– 

– 

– 

0.69 

0.69 

0.00 

0.00 

– 

– 

– 

– 

– 

– 

0.69 

0.69 

0.00 

0.00 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

971.1 

971.1 

970.9 

970.9 

– 

– 

– 

44.5 

44.5 

– 

– 

– 

44.5 

44.5 

– 

– 

– 

52.0 

52.0 

– 

– 

– 

52.0 

52.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

0.0 

0.0 

– 

– 

– 

0.0 

0.0 

antofagasta.co.uk 

203 
201

antofagasta.co.ukFINANCIAL STATEMENTS 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
ORE RESERVES AND MINERAL RESOURCES ESTIMATES CONTINUED 
At 31 December 2017 

MINERAL RESOURCES ESTIMATES (INCLUDING ORE RESERVES) CONTINUED 

 Group Subsidiaries  

2017 

2016 

2017 

Twin Metals (see note (m)) 

Tonnage  
(millions of tonnes) 

Maturi 

Measured 

Indicated 

279.5 

745.5 

279.5 

745.5 

Measured + Indicated  

1,025.0 

1,025.0 

Inferred 

Sub-Total 

Maturi South West  

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Birch Lake 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Spruce Road 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Sub-Total 

Twin Metals Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Group subsidiaries 

Measured + Indicated  

Inferred 

481.4 

481.4 

1,506.4 

1,506.4 

– 

93.1 

93.1 

29.3 

– 

93.1 

93.1 

29.3 

122.4 

122.4 

– 

90.4 

90.4 

217.0 

307.4 

– 

– 

– 

– 

90.4 

90.4 

217.0 

307.4 

– 

– 

– 

435.5 

435.5 

435.5 

435.5 

279.5 

929.1 

279.5 

929.1 

1,208.6 

1,208.6 

1,163.1 

1,163.1 

2,371.7 

2,371.7 

9,880.4 

9,956.0 

8,467.4 

8,457.5 

Group Subsidiaries total  

18,347.8 

18,413.5 

0.63 

0.58 

0.59 

0.49 

0.56 

– 

0.48 

0.48 

0.43 

0.47 

– 

0.52 

0.52 

0.46 

0.48 

– 

– 

– 

0.43 

0.43 

0.63 

0.56 

0.58 

0.46 

0.52 

0.47 

0.43 

0.45 

Copper 
(%) 

2016 

0.63 

0.58 

0.59 

0.49 

0.56 

– 

0.48 

0.48 

0.43 

0.47 

– 

0.52 

0.52 

0.46 

0.48 

– 

– 

– 

0.43 

0.43 

0.63 

0.56 

0.58 

0.46 

0.52 

0.47 

0.42 

0.45 

Nickel 
(%) 

2016 

TPM  
(g/tonne Au+Pt+Pd) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

0.200 

0.200 

0.190 

0.193 

0.160 

0.182 

– 

0.170 

0.170 

0.150 

0.165 

– 

0.160 

0.160 

0.150 

0.153 

– 

– 

– 

0.190 

0.193 

0.160 

0.182 

– 

0.170 

0.170 

0.150 

0.165 

– 

0.160 

0.160 

0.150 

0.153 

– 

– 

– 

0.160 

0.160 

0.160 

0.160 

0.200 

0.200 

0.185 

0.189 

0.158 

0.173 

0.185 

0.189 

0.158 

0.173 

– 

– 

– 

– 

– 

– 

0.57 

0.59 

0.58 

0.52 

0.56 

– 

0.31 

0.31 

0.26 

0.30 

– 

0.87 

0.87 

0.64 

0.70 

– 

– 

– 

0.00 

0.00 

0.57 

0.59 

0.58 

0.34 

0.46 

– 

– 

– 

0.57 

0.59 

0.58 

0.52 

0.56 

– 

0.31 

0.31 

0.26 

0.30 

– 

0.87 

0.87 

0.64 

0.70 

– 

– 

– 

215.3 

712.5 

927.7 

433.6 

215.3 

712.5 

927.7 

433.6 

1,361.3 

1,361.3 

– 

65.2 

65.2 

20.5 

85.7 

– 

63.3 

63.3 

151.9 

215.2 

– 

– 

– 

– 

65.2 

65.2 

20.5 

85.7 

– 

63.3 

63.3 

151.9 

215.2 

– 

– 

– 

0.00 

0.00 

304.8 

304.8 

304.8 

304.8 

0.57 

0.59 

0.58 

0.34 

215.3 

840.9 

215.3 

840.9 

1,056.2 

1,056.2 

910.8 

910.8 

0.46 

1,967.0 

1,967.0 

– 

– 

7,361.8 

7,412.4 

5,571.6 

5,569.4 

–  12,933.4 

12,981.8 

204 
202

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Group Joint Ventures  

Zaldívar (see note (n)) 

Oxides 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Total 

Zaldívar Total 

Measured 

Indicated 

Measured + Indicated  

Inferred 

Group Joint Ventures total 

613.0 

629.7 

Total Group 

Measured + Indicated  

Inferred 

Total 

2017 

2016 

10,484.6 

10,577.6 

8,476.2 

8,465.6 

18,960.8 

19,043.2 

Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

432.4 

444.2 

171.8 

604.2 

8.8 

177.4 

621.6 

8.1 

613.0 

629.7 

432.4 

444.2 

171.8 

604.2 

8.8 

177.4 

621.6 

8.1 

0.49 

0.45 

0.48 

0.51 

0.48 

0.49 

0.45 

0.48 

0.51 

0.48 

2017 

0.47 

0.43 

0.45 

Copper 
(%) 

2016 

0.50 

0.45 

0.49 

0.53 

0.49 

0.50 

0.45 

0.49 

0.53 

0.49 

2016 

0.47 

0.42 

0.45 

Molybdenum 
(%) 

Gold  
(g/tonne) 

Attributable Tonnage 
(millions of tonnes) 

2017 

2016 

2017 

2016 

2017 

2016 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

216.2 

85.9 

302.1 

4.4 

222.1 

88.7 

310.8 

4.1 

306.5 

314.9 

216.2 

85.9 

302.1 

4.4 

222.1 

88.7 

310.8 

4.1 

306.5 

314.9 

2017 

2016 

2017 

2016 

2017 

2016 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

– 

7,663.9 

7,723.2 

5,576.0 

5,573.5 

–  13,239.9 

13,296.7 

antofagasta.co.uk 

205 
203

antofagasta.co.ukFINANCIAL STATEMENTS 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ORE RESERVES AND MINERAL RESOURCES ESTIMATES CONTINUED 
At 31 December 2017 

NOTES TO ORE RESERVES AND MINERAL RESOURCES ESTIMATES 
The ore reserves mentioned in this report were determined considering specific cut-off grades for each mine and using a long-term copper price of $3.00/lb 
($3.10 in 2016), $9.00/lb molybdenum (unchanged from 2016) and $1,250/oz gold (unchanged from 2016), unless otherwise noted. These same values have 
been used for copper equivalent (CuEq) estimates, where appropriate. 

In order to ensure that the stated resources represent mineralisation that has “reasonable prospects for eventual economic extraction” (JORC code) the 
resources are enclosed within pit shells that were optimised based on measured, indicated and inferred resources and considering a copper price of 
$3.60/lb (unchanged from 2016). Mineralisation estimated outside these pit shells is not included in the resource figures. 

Group policy on auditing of resource and reserve estimates is that prior to first publication, an independent external audit is done. For 2017, this is the case for the 
newly incorporated Brujulina and Sierra resources. External audits are also done on resources and reserves for any material changes (incorporation of a significant 
number of drillhole information, for instance) or every three to five years, whichever comes first. In 2017 external audits were carried out on the 2016 ore reserve 
estimates at Pelambres, Centinela, Zaldivar and Antucoya (Encuentro Oxides was audited prior to first publication in 2015). All reserve estimates were found to 
comply with the JORC Code (2012). All the resource models that support the reserve estimates have been audited as per Group policy. 

A)  Los Pelambres 
Los Pelambres is 60% owned by the Group. The cut-off grade applied to the determination of mineral resources is 0.35% copper, while cut-off grade applied 
for mineral reserves is variable over 0.35% copper. For 2017 the mineral resource model has been updated with 195 drill holes for a total of 59,000 metres. 
The decrease of 64 million tonnes in ore reserves is due principally to depletion in the period and reflects the remaining capacity of the existing tailing dams, 
limiting the amount of mineral resource that can be converted into ore reserves. Mineral resources decreased overall by a net 60 million tonnes, including 
depletion. Due to the new drilling to improve the quality of resources within the five-year period 2018-2024; measured resources increased by 95 millon 
tonnes and indicated resources decreased by 97 millon tonnes while inferred resources decreased by 58 million tonnes.  

B)  Centinela (Concentrates & Cathodes) 
Centinela is 70% owned by the Group and consists of Centinela Concentrates (Esperanza + Esperanza Sur, mostly sulphide porphyry deposits) and Centinela Cathodes 
(Tesoro Central, an oxide deposit + the oxide portion of the Mirador deposit) operations. The cut-off grade applied to the determination of ore reserves for Centinela 
Concentrates is 0.15% equivalent copper, with 0.15% copper used as a cut-off grade for mineral resources. The cut-off grade used for the Centinela Cathodes deposits is as 
follows: Tesoro Central deposit is 0.41% copper for ore reserves and 0.30% for mineral resources; the Mirador Oxides deposit is 0.30% copper for ore reserves and 0.15% 
for mineral resources. The cut-off grade applied to oxides contained in the Esperanza deposit (processed separately as Run-of-Mine leach, or ROM) is 0.20% copper for ore 
reserves and 0.15% copper for mineral resources. Esperanza Sur ore reserves have increased by a net 72 million tonnes due to a change in the cut-off grade criteria, 
incorporating molybdenum and silver in the copper equivalent calculation, while mineral resources decreased by a net 114 million tonnes. The decrease is mainly in Esperanza 
and Esperanza Sur deposits due to updates to the economic parameters and cost model in the period. The Centinela Cathodes ore reserves are made up of 73.6 million 
tonnes at 0.58% copper of heap leach ore and 117.9 million tonnes at 0.28% copper of ROM ore. 

C)  Encuentro 
Encuentro is 100% owned by the Group. The cut-off grade applied to the determination of mineral resources for both oxides and sulphides is 0.15% copper. 
The oxide portion of the porphyry copper deposit is part of the Encuentro Oxides project currently feed into the Centinela Cathodes operation. Ore Reserves 
decrease overall by a net 3 million tonnes due to depletion from start up of operations in 2017. Mineral resources decreased overall by a net 41 million tonnes, 
including depletion, due principally to updates to the cost model. 

D)  Antucoya  
Antucoya is 70% owned by the Group. The ore reserve cut-off grade is calculated using an economic formula with a minimum of 0.16% copper, while the 
cut-off grade for mineral resources is 0.15% copper. Despite depletion in the period of 40 million tonnes, mineral resources have decreased by 4 million 
tonnes mainly due to changes in economic assumptions and an updated pit design. 

E)  Polo Sur  
Polo Sur is 100% owned by the Group. The cut-off grade applied to the determination of mineral resources for both oxides and sulphides is 0.20% copper. 
For 2017 the resource model has not been updated.  

F)  Penacho Blanco 
Penacho Blanco is 51% owned by the Group. The cut-off grade applied to the determination of mineral resources for both oxides and sulphides is 0.20% 
copper. For 2017 the resource model has not been updated.  

G)  Mirador 
Mirador is 100% owned by the Group. A portion of Mirador Oxides is subject to an agreement between the Group and Centinela, whereby Centinela 
purchased the rights to mine the oxide ore reserves within an identified area. The ore reserves and mineral resources for Mirador Oxides subject to the 
agreement with Centinela are included in the Centinela Cathodes section. The resources not subject to the agreement are reported in this section. The cut-off 
grade applied to the determination of mineral resources for oxides is 0.15% copper and for sulphides is 0.20% copper. For 2017 the resource model has 
been refined without additional drill holes, increasing in 13 million tonnes.  

H)  Llano 
The Llano deposit is covered by AMSA and Centinela mining tenements shared in different proportions, with the Group owning 70.8% of the resource. The 
cut-off grade applied to the determination of mineral resources is 0.15% copper. For 2017 mineral resources increased overall by a net 10 million tonnes, due 
to updates to the recovery parameters and refinement without additional drill holes.  

I)  Paleocanal 
The Paleocanal deposit is covered by AMSA and Centinela mining tenements shared in different proportions, with the Group owning 89.2% of the resource. 
The cut-off grade applied to the determination of mineral resources is 0.15% copper. For 2017 mineral resources increased overall by a net 5 million tonnes, 
due to updates to the recovery parameters and refinement without additional drill holes.  

206 
204

Antofagasta Annual Report 2017 

Antofagasta plc Annual Report 2017ORE RESERVES AND MINERAL RESOURCES ESTIMATES CONTINUED 

At 31 December 2017 

NOTES TO ORE RESERVES AND MINERAL RESOURCES ESTIMATES 

The ore reserves mentioned in this report were determined considering specific cut-off grades for each mine and using a long-term copper price of $3.00/lb 

($3.10 in 2016), $9.00/lb molybdenum (unchanged from 2016) and $1,250/oz gold (unchanged from 2016), unless otherwise noted. These same values have 

been used for copper equivalent (CuEq) estimates, where appropriate. 

In order to ensure that the stated resources represent mineralisation that has “reasonable prospects for eventual economic extraction” (JORC code) the 

resources are enclosed within pit shells that were optimised based on measured, indicated and inferred resources and considering a copper price of 

$3.60/lb (unchanged from 2016). Mineralisation estimated outside these pit shells is not included in the resource figures. 

Group policy on auditing of resource and reserve estimates is that prior to first publication, an independent external audit is done. For 2017, this is the case for the 

newly incorporated Brujulina and Sierra resources. External audits are also done on resources and reserves for any material changes (incorporation of a significant 

number of drillhole information, for instance) or every three to five years, whichever comes first. In 2017 external audits were carried out on the 2016 ore reserve 

estimates at Pelambres, Centinela, Zaldivar and Antucoya (Encuentro Oxides was audited prior to first publication in 2015). All reserve estimates were found to 

comply with the JORC Code (2012). All the resource models that support the reserve estimates have been audited as per Group policy. 

A)  Los Pelambres 

Los Pelambres is 60% owned by the Group. The cut-off grade applied to the determination of mineral resources is 0.35% copper, while cut-off grade applied 

for mineral reserves is variable over 0.35% copper. For 2017 the mineral resource model has been updated with 195 drill holes for a total of 59,000 metres. 

The decrease of 64 million tonnes in ore reserves is due principally to depletion in the period and reflects the remaining capacity of the existing tailing dams, 

limiting the amount of mineral resource that can be converted into ore reserves. Mineral resources decreased overall by a net 60 million tonnes, including 

depletion. Due to the new drilling to improve the quality of resources within the five-year period 2018-2024; measured resources increased by 95 millon 

tonnes and indicated resources decreased by 97 millon tonnes while inferred resources decreased by 58 million tonnes.  

B)  Centinela (Concentrates & Cathodes) 

Centinela is 70% owned by the Group and consists of Centinela Concentrates (Esperanza + Esperanza Sur, mostly sulphide porphyry deposits) and Centinela Cathodes 

(Tesoro Central, an oxide deposit + the oxide portion of the Mirador deposit) operations. The cut-off grade applied to the determination of ore reserves for Centinela 

Concentrates is 0.15% equivalent copper, with 0.15% copper used as a cut-off grade for mineral resources. The cut-off grade used for the Centinela Cathodes deposits is as 

follows: Tesoro Central deposit is 0.41% copper for ore reserves and 0.30% for mineral resources; the Mirador Oxides deposit is 0.30% copper for ore reserves and 0.15% 

for mineral resources. The cut-off grade applied to oxides contained in the Esperanza deposit (processed separately as Run-of-Mine leach, or ROM) is 0.20% copper for ore 

reserves and 0.15% copper for mineral resources. Esperanza Sur ore reserves have increased by a net 72 million tonnes due to a change in the cut-off grade criteria, 

incorporating molybdenum and silver in the copper equivalent calculation, while mineral resources decreased by a net 114 million tonnes. The decrease is mainly in Esperanza 

and Esperanza Sur deposits due to updates to the economic parameters and cost model in the period. The Centinela Cathodes ore reserves are made up of 73.6 million 

tonnes at 0.58% copper of heap leach ore and 117.9 million tonnes at 0.28% copper of ROM ore. 

Encuentro is 100% owned by the Group. The cut-off grade applied to the determination of mineral resources for both oxides and sulphides is 0.15% copper. 

The oxide portion of the porphyry copper deposit is part of the Encuentro Oxides project currently feed into the Centinela Cathodes operation. Ore Reserves 

decrease overall by a net 3 million tonnes due to depletion from start up of operations in 2017. Mineral resources decreased overall by a net 41 million tonnes, 

including depletion, due principally to updates to the cost model. 

Antucoya is 70% owned by the Group. The ore reserve cut-off grade is calculated using an economic formula with a minimum of 0.16% copper, while the 

cut-off grade for mineral resources is 0.15% copper. Despite depletion in the period of 40 million tonnes, mineral resources have decreased by 4 million 

tonnes mainly due to changes in economic assumptions and an updated pit design. 

Polo Sur is 100% owned by the Group. The cut-off grade applied to the determination of mineral resources for both oxides and sulphides is 0.20% copper. 

For 2017 the resource model has not been updated.  

F)  Penacho Blanco 

copper. For 2017 the resource model has not been updated.  

G)  Mirador 

Mirador is 100% owned by the Group. A portion of Mirador Oxides is subject to an agreement between the Group and Centinela, whereby Centinela 

purchased the rights to mine the oxide ore reserves within an identified area. The ore reserves and mineral resources for Mirador Oxides subject to the 

agreement with Centinela are included in the Centinela Cathodes section. The resources not subject to the agreement are reported in this section. The cut-off 

grade applied to the determination of mineral resources for oxides is 0.15% copper and for sulphides is 0.20% copper. For 2017 the resource model has 

been refined without additional drill holes, increasing in 13 million tonnes.  

The Llano deposit is covered by AMSA and Centinela mining tenements shared in different proportions, with the Group owning 70.8% of the resource. The 

cut-off grade applied to the determination of mineral resources is 0.15% copper. For 2017 mineral resources increased overall by a net 10 million tonnes, due 

to updates to the recovery parameters and refinement without additional drill holes.  

The Paleocanal deposit is covered by AMSA and Centinela mining tenements shared in different proportions, with the Group owning 89.2% of the resource. 

The cut-off grade applied to the determination of mineral resources is 0.15% copper. For 2017 mineral resources increased overall by a net 5 million tonnes, 

due to updates to the recovery parameters and refinement without additional drill holes.  

C)  Encuentro 

D)  Antucoya  

E)  Polo Sur  

H)  Llano 

I)  Paleocanal 

J)  Los Volcanes 
Los Volcanes is 51% owned by the Group. The cut-off grade applied to the determination of ore reserves and mineral resources is 0.20% copper. For 2017 
the mineral resource model has not been updated.  

K)  Brujulina  
Brujulina is 51% owned by the Group and was removed from the 2016 ‘Other Mineral Inventory’ section and added to the 2017 Mineral Resource table. The 
cut-off grade applied to the determination of mineral resources is 0.30% copper. 

L)  Sierra 
Sierra is 100% owned by the Group; at the end 2016 the Group acquired the Sierra project. In 2017 a new resource model is built and reviewed by an 
external auditor. The cut-off grade applied to the determination of mineral resources is 0.30% copper. 

M)  Twin Metals Minnesota LLC  
Twin Metals Minnesota LLC ("Twin Metals") is owned 100% by the Group.  

Twin Metals has a 70% interest in the Birch Lake Joint Venture ("BLJV") which holds the Birch Lake, Spruce Road and Maturi Southwest deposits, as well as 
a portion of the main Maturi deposit. With these interests taken into consideration, Twin Metals owns 82.9% of the resource. The resource estimate remains 
unchanged from 2016.  

The cut-off grade applied to the determination of mineral resources is 0.3% copper, which when combined with credits from nickel, platinum, palladium and 
gold, is deemed appropriate for an underground operation. In the resource table ‘TPM’ (Total Precious Metals) refers to the sum of platinum, palladium and 
gold values in grammes per tonne. The TPM value of 0.56 g/tonne for the Maturi resource estimate is made up of 0.15 g/tonne platinum, 0.34 g/tonne 
palladium and 0.08 g/tonne gold. The TPM value of 0.30 g/tonne for the Maturi Southwest resource estimate is made up of 0.08 g/tonne platinum, 0.17 
g/tonne palladium and 0.05 g/tonne gold. The TPM value of 0.70 g/tonne for the Birch Lake resource estimate is made up of 0.19 g/tonne platinum, 0.41 
g/tonne palladium and 0.10 g/tonne gold. The Spruce Road resource estimate does not include TPM values as they were not assayed. 

On March 8, 2016, the Solicitor of the Department of the Interior issued a legal opinion concluding that the Bureau of Land Management (BLM) has discretion 
to deny Twin Metals’ application for renewal of federal mineral leases MNES-1352 and MNES-1353. The United States Forest Service (USFS) declined to 
consent to renewal of the leases on December 14, 2016, and BLM rejected Twin Metals’ application to renew the leases the next day. 

On September 12, 2016, Twin Metals filed a complaint in the U.S. District Court in Minnesota against the United States, the U.S. Department of the Interior 
and the BLM. Following the USFS withholding of consent and BLM’s denial of renewal, Twin Metals filed an amended complaint on January 3, 2017, adding 
the U.S. Department of Agriculture and the USFS as defendants.  

On December 22 2017 the Solicitor of the Department of the Interior issued a new legal opinion concluding that the BLM did not have discretion to deny Twin 
Metals’ application for renewal of federal mineral leases MNES-1352 and MNES-1353. Immediately after, Twin Metals dismissed its lawsuit filed in the U.S. 
District Court in Minnesota against the BLM and USFS, with immediate effect. Currently there is no pending litigation. 

It is expected that shortly after the issuing of the new legal opinion, the BLM will reinstate the federal mineral leases MNES-1352 and MNES-1353 and the 
renewal process should resume and continue. 

N)  Zaldívar 
Zaldivar is 50% owned by the Group. Cut-off grades are calculated using an economic formula which is equivalent to approximately 0.20% copper. For 2017 
the mineral resource model has not been updated. Ore Reserves have decreased by 33 million tonnes mainly due to depletion. Mineral Resources have 
decreased by 17 million tonnes, including depletion, due to positive changes in economic assumptions and changes to the geo-metallurgical model. 

O)  Other Mineral Inventory  
In addition to the Mineral Resources noted above, the Group has interests in other deposits located in the Antofagasta Region of Chile, some of them 
containing gold and/or molybdenum. At the moment they are in exploration or in the process of resource estimation. The potential quantity and grade of each 
of the deposits is conceptual in nature, there has been insufficient exploration to define these deposits as mineral resources, and it is uncertain if further 
exploration will result in the determination of a mineral resource. These include:  

Penacho Blanco is 51% owned by the Group. The cut-off grade applied to the determination of mineral resources for both oxides and sulphides is 0.20% 

In the Michilla District  

(i) 
The Rencoret deposit, owned 100% by the Group. 

 Mineral Deposit  

Rencoret 

Total 

Tonnes range 
(million tonnes) 

15 

15 

25 

25 

Grade range (% cu) 

1.22 

1.22 

1.00 

1.00 

Number  
drill holes 

31 

31 

Total 
metres 

8300 

8300 

Ownership 
interest 
(%)  

100 

P)  Antomin 2 and Antomin Investors  
The Group has an approximately 51% interest in two indirect subsidiaries, Antomin 2 Limited (“Antomin 2”) and Antomin Investors Limited (“Antomin 
Investors”), which own a number of copper exploration properties in Chile’s Antofagasta Region and Coquimbo Region. These include, among others, 
Penacho Blanco, Los Volcanes and Brujulina. The remaining approximately 49% of Antomin 2 and Antomin Investors is owned by Mineralinvest 
Establishment (“Mineralinvest”), a company controlled by the Luksic family.  

Further details are set out in Note 34(c) to the financial statements. 

206 

Antofagasta Annual Report 2017 

antofagasta.co.uk 

207 
205

antofagasta.co.ukFINANCIAL STATEMENTS 
 
 
GLOSSARY AND DEFINITIONS

ATI

AMSA

Antucoya

Annual Report

BUSINESS, FINANCIAL AND ACCOUNTING
All Injury Frequency Rate.
AIFR
Alto Maipo SpA is incorporated in Chile and 
Alto Maipo
owns the Alto Maipo hydroelectric project in 
the upper section of the Maipo River in Chile. 
The Group disposed of its 40% interest in Alto 
Maipo in 2017.
Antofagasta Minerals S.A., a wholly-owned 
subsidiary of the Group incorporated in Chile, 
which acts as the corporate centre for the 
mining division.
The Annual Report and Financial Statements 
of Antofagasta plc.
Minera Antucoya S.A., a 70%-owned 
subsidiary of the Group incorporated in Chile.
Antofagasta Terminal Internacional S.A., a 
30%-owned associate of the Group 
incorporated in Chile, which operates the port 
in the city of Antofagasta.
Australian currency.
A commercial bank that is a subsidiary of 
Quiñenco. 
Barrick Gold Corporation, incorporated in 
Canada. Joint venture partner of the Group 
in both Zaldívar and Tethyan.
Capital expenditure.
A measure of the cost of operating production 
expressed in terms of US dollars per pound 
of payable copper produced. Cash costs are 
stated net of by-product credits and include 
tolling charges for concentrates for Los 
Pelambres and Centinela. Cash costs exclude 
depreciation, financial income and expenses, 
hedging gains and losses, exchange gains and 
losses, and corporation tax.
Compañía de Cervecerías Unidas S.A., a 
brewing company and associate of Quiñenco.
Carbon Disclosure Project.

Australian dollars
Banco de Chile

Capex
Cash costs

Barrick Gold

CDP

CCU

206

Centinela

Centinela Mining 
District
CGU
Chilean peso
Comex

Minera Centinela S.A., a 70%-owned 
subsidiary of the Group incorporated in Chile 
that holds the Centinela Concentrates 
(formerly Esperanza) and Centinela Cathodes 
(formerly El Tesoro) operations.
Copper district located in the Antofagasta 
Region of Chile, where Centinela is located. 
Cash-Generating Unit.
Chilean currency.
A commodity exchange that trades metals 
such as gold, silver, copper and aluminium.
Principal legislation for United Kingdom 
company law.

Companies Act 
2006
Continental water Water that comes from the interior of land 

Corporate 
Governance Code

Directors
Duluth

EBITDA

EIA 
El Arrayán

Encuentro

Energía Andina

EPS

masses including rain, snow, streams, rivers, 
lakes and groundwater.
The UK Corporate Governance Code is a set 
of principles of good corporate governance, 
most of which have their own more detailed 
provisions published by the Financial Reporting 
Council (FRC), most recently updated in 2016.
The Directors of the Company.
Duluth Metals Limited, a wholly-owned 
subsidiary of Antofagasta plc acquired on 28 
January 2015, through which the Group holds 
the Twin Metals Project.
Earnings Before Interest, Tax, Depreciation 
and Amortisation.
Environmental Impact Assessment. 
Parque Eólico el Arrayán SpA, a 30%-owned 
associate of the Group that operates a 
wind-power plant providing up to 40MW 
of electricity to Los Pelambres.
Copper oxide and sulphide deposit in the 
Centinela Mining District.
Energía Andina S.A., a 50%-owned joint 
venture entity of the Group incorporated  
in Chile.
Earnings per share.

Antofagasta plc Annual Report 2017Esperanza Sur
EU
FCA

FCAB

FTSE All-Share 
Index

GAAP

GHG
Government
Hedge accounting

IAS
IASB
ICMM 
IFRIC

IFRS
Inversiones 
Hornitos

IVA

Copper deposit in the Centinela Mining District.
European Union.
Financial Conduct Authority, a UK 
regulatory body.
Ferrocarril de Antofagasta a Bolivia, 
the corporate name of the Group’s 
transport division.
A market-capitalisation weighted index 
representing the performance of all eligible 
companies listed on the London Stock 
Exchange’s main market.
Generally Accepted Accounting Practice 
or Generally Accepted Accounting Principles, 
a collection of commonly-followed accounting 
rules and standards for financial reporting.
Greenhouse Gas.
The Government of the Republic of Chile.
Accounting treatment for derivative financial 
instruments permitted under IAS 39 “Financial 
Instruments: Recognition and Measurement“, 
which recognises the offsetting effects on 
profit or loss of changes in the fair values 
of a hedging instrument and the hedged item.
International Accounting Standards.
International Accounting Standards Board.
International Council on Metals and Mining. 
International Financial Reporting 
Interpretations Committee.
International Financial Reporting Standards.
Inversiones Hornitos S.A., a 40%-owned 
associate of the Group incorporated in Chile, 
which owns the 150MW Hornitos 
thermoelectric power plant in Mejillones 
in Chile’s Antofagasta Region.
Impuesto al Valor Agregado, or Chilean Value 
Added Tax (Chilean VAT).

Key Management 
Personnel

KPI
LBMA 
LIBOR
LME
Los Pelambres

LSE
LTIFR
LTIP 

MARC

Marubeni

Michilla

PEP

Platts 

PPA

Persons with authority and responsibility for 
planning, directing and controlling the activities 
of the Group.
Key performance indicator.
London Bullion Market Association. 
London Inter Bank Offered Rate.
London Metal Exchange.
Minera Los Pelambres S.A., a 60%-owned 
subsidiary of the Group incorporated in Chile.
London Stock Exchange.
Lost Time Injury Frequency Rate.
Long-term Incentive Plan in which the Group’s 
CEO, Executive Committee members and other 
senior managers participate. 
Maintenance and Repair Contract. 
A maintenance contract under which the 
service provider commits to a certain level 
of availability of the equipment during the term 
of the contract.
Marubeni Corporation, the Group’s 30% 
partner in Centinela and Antucoya. Marubeni 
also holds an effective 8.75% interest in Los 
Pelambres.
Minera Michilla S.A., a 99.9%-owned 
subsidiary of the Group incorporated in Chile, 
closed at the end of 2015 and sold in 
November 2016.
Politically Exposed Person, an individual who 
holds or has held a prominent public position 
in a national or international organisation 
within the last year.
A provider of energy and metals information 
and source of benchmark price assessments. 
Power Purchase Agreement.

207

antofagasta.co.ukFINANCIAL STATEMENTSSystems, Applications and Products. An ERP 
(“Enterprise Resource Planning”) system and 
data management programme.
Servicio Nacional de Geología y Minería, a 
government agency that provides geological 
and technical advice and regulates the mining 
industry in Chile.
Shanghai Futures Exchange. 
Sociedad Nacional de Minería. Institution that 
represents the mining activity in Chile, for 
large, medium and small scale, metallic and 
non-metallic companies.
Pounds Sterling, UK currency.
Superintendencia de Valores y Seguros 
de Chile, the Chilean securities regulator.
{Copper oxide open pits forming part of the 
Centinela operation.]
Tethyan Copper Company Limited, a 50-50 
joint venture with Barrick Gold, incorporated 
in Australia.
Total Shareholder Return, being the movement 
in the Company’s share price plus reinvested 
dividends.
A copper, nickel and platinum group metals 
underground-mining project located in 
Minnesota, US.
United Kingdom.
United Kingdom Listing Authority, part of 
the FCA.
United States.
United States currency.
Compañía Minera Zaldívar SpA, a 50-50 joint 
venture with Barrick Gold, which operates the 
Zaldívar copper mine in Chile.

GLOSSARY AND DEFINITIONS CONTINUED

Provisional pricing A sales term in several copper and 

SAP

molybdenum concentrate sale agreements 
and cathodes sale agreements that provides 
for provisional pricing of sales at the time of 
shipment, with final pricing being based on the 
monthly average LME copper price or monthly 
average molybdenum price for specific future 
periods, normally ranging from 30 to 180 days 
after delivery to the customer. For the 
purposes of IAS 39, the provisional sale is 
considered to contain an embedded derivative 
(ie the forward contract for which the 
provisional sale is subsequently adjusted) that 
is separated from the host contract (ie the sale 
of metals contained in the concentrate or 
cathode at the provisional invoice price less 
tolling charges).
Quiñenco S.A., a Chilean financial and 
industrial group listed on the Santiago Stock 
Exchange controlled by a foundation in which 
the Luksic family have interests,.
International treaty for the conservation 
and sustainable utilisation of wetlands.
Resolución de Calificación Ambiental, 
Environmental Approval Resolution.
Realised prices are determined by comparing 
revenue (gross of TC/RCs for concentrate 
sales) with sales volumes. Realised copper 
prices differ from market prices mainly 
because the Group’s sales agreements 
generally provide for provisional pricing at the 
time of shipment with final pricing based on 
the average market price  
for future periods. Realised prices also reflect 
the impact of realised gains or losses on 
commodity derivative instruments.

SERNAGEOMIN

SHFE
SONAMI

Sterling
SVS

Tesoro Central and 
Tesoro Noreste
Tethyan

TSR

Twin Metals 
Minnesota Project

UK
UKLA

US
US dollar
Zaldívar 

Quiñenco 

Ramsar 
Convention 
RCA

Realised prices

208

Antofagasta plc Annual Report 2017 
MINING INDUSTRY
Brownfield project A development or exploration project in 

By-products 
(credits in copper 
concentrates)

Concentrate

Contained copper

Copper cathode

Cut-off grade

Flotation

Grade A 
copper cathode

Greenfield project

Heap-leaching or 
leaching

the vicinity of an existing operation.
Products obtained as a result of copper 
processing. Los Pelambres and Centinela 
Concentrates receive credit for the gold and 
silver content in the copper concentrate 
sold. Los Pelambres also produces 
molybdenum concentrate.
The product of a physical concentration 
process, such as flotation or gravity 
concentration, which involves separating 
ore minerals from unwanted waste rock. 
Concentrates require subsequent processing 
(such as smelting or leaching) to break down 
or dissolve the ore minerals and obtain the 
desired elements, usually metals.
The proportion or quantity of copper contained 
in a given quantity of ore or concentrate.
Refined copper produced by electrolytic 
refining of impure copper using 
electrowinning.
The lowest grade of mineralised material 
considered economic to process and used 
in the calculation of ore reserves and 
mineral resources.
A process of separation by which chemicals 
in solution are added to materials, some of 
which are attracted to bubbles and float, while 
others sink. This results in the production 
of concentrate.
Highest-quality copper cathode (LME 
registered and certified in the case of 
Centinela Cathodes).
The development or exploration of a new 
project at a previously undeveloped site.
A process for the recovery of copper from 
ore, generally oxides. The crushed material is 
laid on a slightly sloping, impermeable pad and 
leached by uniformly trickling (gravity fed) 
chemical solution through the beds to ponds. 
The metal is then recovered from the solution 
through the SX-EW process.

JORC

ktpd 
Life-of-Mine 
(“LOM”)

The Australasian Joint Ore 
Reserves Committee.
Thousand tonnes per day.
The remaining life of a mine expressed in 
years, calculated by reference to its current 
defined reserves and the rate at which ore 
is expected to be extracted.

Mineral resources Material of intrinsic economic interest 

occurring in such form and quantity that 
there are reasonable prospects for eventual 
economic extraction. Mineral resources 
are stated inclusive of ore reserves, as 
defined by JORC.
Megawatts (one million watts).
Gross cash costs less by-product credits. 
Mine working or excavation that is open to 
the surface.
Rock from which metal(s) or mineral(s) can 
be economically and legally extracted.
The relative quantity, or percentage, of metal 
content in an ore body or quantity of 
processed ore.
Part of Mineral Resources for which 
appropriate assessments have been carried 
out to demonstrate that at a given date 
extraction could be reasonably justified. These 
include consideration of and modification by 
realistically assumed mining, metallurgical, 
economic, marketing, legal, environmental, 
social and governmental factors.
Oxide ore occurs on the weathered surface 
of ore-rich lodes and normally results in the 
production of copper cathodes through a 
heap-leaching process. 
The proportion or quantity of contained copper 
for which payment is received after 
metallurgical deduction.

MW
Net cash cost
Open pit

Ore

Ore grade

Ore reserves

Oxide ores

Payable copper

209

antofagasta.co.ukFINANCIAL STATEMENTSGLOSSARY AND DEFINITIONS CONTINUED

Porphyry

Run-of-Mine 
(“ROM”)

Stockpile
SX-EW

Sulphide ore

A large body of rock which contains 
disseminated chalcopyrite and other sulphide 
minerals. Such a deposit is mined in bulk on a 
large scale, generally in open pits, for copper 
and its by-products.
A process for the recovery of copper from 
ore, typically used for low-grade ores. 
The mined, uncrushed ore is leached with 
a chemical solution. The metal is then 
recovered from the solution through the 
SX-EW process.
Material extracted and piled for future use.
Solvent extraction and electrowinning. 
A process for extracting metal from an ore 
and producing pure metal. First the metal is 
leached into solution, the resulting solution 
is then purified in the solvent-extraction 
process before being treated in an 
electrochemical process (electrowinning) 
to recover copper cathodes.
Sulphide ore comes from unweathered parent 
ore and normally results in the production of 
concentrate through a flotation process which 
then requires smelting and refining to produce 
copper cathodes.

Tailings dam

TC/RCs

Tolling charges

Tonne
tpd

Construction used to deposit the rock waste 
which remains as a result of the concentrating 
process after the recoverable minerals have 
been extracted in concentrate form.
Treatment and refining charges, being terms 
used to set the smelting and refining charge 
or margin for processing copper concentrate 
and normally set either on an annual or 
spot basis.
Charges or margins for converting concentrate 
into finished metal. These include TC/RCs, 
price participation and price sharing for copper 
concentrate and roasting charges for 
molybdenum concentrate.
Metric tonne.
Tonnes per day, normally with reference to the 
quantity of ore processed over a given period 
of time, expressed as a daily average.

Underground mine Natural or man-made excavation under 

the surface of the ground.

210

Antofagasta plc Annual Report 2017 
SHAREHOLDER INFORMATION

CURRENCY ABBREVIATIONS
$
$000
$m
£
£000
£m
p
C$
C$m
Ch$
Ch$000
Ch$m
A$
A$000
A$m

US dollars
Thousand US dollars
Million US dollars
Pound sterling
Thousand pounds sterling
Million pounds sterling
Pence sterling
Canadian dollar
Million Canadian dollar
Chilean peso
Thousand Chilean pesos
Million Chilean pesos
Australian dollars
Thousand Australian dollar
Million Australian dollars

DEFINITIONS AND CONVERSION  
OF WEIGHTS AND MEASURES
Pound
lb
A troy ounce
oz
’000 m3
Thousand cubic metres
Thousand metric tonnes
’000 tonnes
2.2046 pounds
1 kilogramme
2,204.6 pounds or 1,000 kilogrammes
1 tonne
0.6214 miles
1 kilometre
31.1 grammes
1 troy ounce

CHEMICAL SYMBOLS
Cu
Mo
Au
Ag

Copper
Molybdenum
Gold
Silver

DIVIDENDS
Details of dividends proposed in relation to the year are given in 
the Directors’ Report on page 123, and in Note 13 to the 
Financial Statements.

If approved at the Annual General Meeting, the final dividend of 
40.6 cents will be paid on 25 May 2018 to ordinary shareholders 
that are on the register at the close of business on 27 April 2018. 
Shareholders can elect (on or before 3 May 2018) to receive this final 
dividend in US dollars, Sterling or Euro, and the exchange rate, which 
will be applied to final dividends to be paid in Sterling or Euro, will be 
set as soon as reasonably practicable after that date which 
is currently anticipated to be on 3 May 2018.

Further details of the currency election timing and process (including 
the default currency of payment) are available on the Antofagasta plc 
website (www.antofagasta.co.uk) or from the Company’s registrar, 
Computershare Investor Services PLC on +44 37 0702 0159.

Dividends are paid gross without deduction of United Kingdom 
income tax. Antofagasta plc is a resident in the United Kingdom for 
tax purposes.

ANNUAL GENERAL MEETING
The Annual General Meeting will be held at Church House Conference 
Centre, Dean’s Yard, Westminster, London SW1P 3NZ at 10.00 am 
on Wednesday 23 May 2018. The formal notice of the Annual General 
Meeting and resolutions to be proposed are set out in the Notice 
of Annual General Meeting.

LONDON STOCK EXCHANGE LISTING AND SHARE PRICE
The Company’s shares are listed on the London Stock Exchange.

SHARE CAPITAL
Details of the Company’s ordinary share capital are given in Note 29 
to the Financial Statements.

211

antofagasta.co.ukFINANCIAL STATEMENTS 
 
REGISTRARS
Computershare Investor Services PLC 
The Pavilions  
Bridgwater Road 
Bristol BS99 6ZY 
United Kingdom 
Tel: +44 37 0702 0159 
www.computershare.com

WEBSITE
Antofagasta plc’s annual and half-yearly financial reports, press 
releases and other presentations are available on the Group’s  
website at www.antofagasta.co.uk.

REGISTERED OFFICE
Cleveland House  
33 King Street 
London SW1Y 6RJ  
United Kingdom 
Tel: +44 20 7808 0988

SANTIAGO OFFICE
Antofagasta Minerals SA 
Av. Apoquindo 4001 – Piso 18 
Las Condes, Santiago, Chile 
Tel: +562 2798 7000

REGISTERED NUMBER
1627889

Additional information can be found in the Shareholder Information 
section of the Notice of Annual General Meeting and on the  
Group’s website.

SHAREHOLDER INFORMATION CONTINUED

3 May 2018 

SHAREHOLDER CALENDAR 2018
25 April 2018
26 April 2018 
27 April 2018 
30 April 2018 

Q1 2018 Production Report
2017 Final Dividend – Ex Dividend date
2017 Final Dividend – Record date
2017 Final Dividend – Final date for receipt 
of Currency Elections
2017 Final Dividend – Pound Sterling/ 
Euro Rate set
Annual General Meeting
2017 Final Dividend – Payment date
Q2 2018 Production Report
HY 2018 Results Announcement 

23 May 2018
25 May 2018 
27 July 2018 
14 August 2018 
6 September 2018  2018 Interim Dividend – Ex Dividend date
7 September 2018  2018 Interim Dividend – Record date
10 September 2018  2018 Interim Dividend – Final date for receipt 

of Currency Elections
13 September 2018  2018 Interim Dividend – Pound Sterling/ 

5 October 2018 
24 October 2018 
23 January 2019 

Euro Rate set
2018 Interim Dividend – Payment date
Q3 2018 Production Report
Q4 2018 Production Report

Dates are provisional and subject to change.

212

Antofagasta plc Annual Report 2017Chairman
Non-Executive

Non-Executive
Non-Executive
Non-Executive
Non-Executive
Non-Executive
Non-Executive
Non-Executive
Non-Executive
Non-Executive

DIRECTORS AND ADVISERS

DIRECTORS
Jean-Paul Luksic 
Manuel Lino Silva De Sousa-Oliveira 
(Ollie Oliveira)
Gonzalo Menéndez
Ramón Jara
Juan Claro
William Hayes
Tim Baker
Andrónico Luksic C
Vivianne Blanlot
Jorge Bande
Francisca Castro

COMPANY SECRETARY
Julian Anderson

AUDITOR
PricewaterhouseCoopers LLP

SOLICITORS
Clifford Chance LLP

FINANCIAL ADVISERS
N M Rothschild & Sons

STOCKBROKERS
J.P. Morgan Cazenove

Citigroup Global Markets Limited

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be credited by a third party.

For up-to-date investor information including our past financial 
results, visit:

+ Group website: 

www.antofagasta.co.uk

+ Investors: 

www.antofagasta.co.uk/investors

Antofagasta plc 
Cleveland House 
33 King Street 
London 
SW1Y 6RJ 
United Kingdom

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