Kirkland Lake Gold Inc. is a Canadian company primarily involved in gold mining and milling operations based in Kirkland Lake. The company owns a number of gold mining properties in the region including the Macassa Mine and Mill, four other formerly producing mines, and other adjacent properties. Kirkland Lake Gold has been successful in generating strong financial results and increasing shareholder value. The company is also one of the few gold miners which has managed to grow production while maintaining a low all-in sustaining cost.