Capstone Mining Corporation (Capstone) is a Canada-based mining company. The Company is engaged in the production of and exploration for base metals in the United States, Mexico, Canada and Chile. Its subsidiaries include Pinto Valley Mining Corp., which owns and operates the copper Pinto Valley Mine in Arizona, United States; Capstone Gold, S.A. de C.V, which owns and operates the copper-silver Cozamin Mine located in Zacatecas, Mexico; Minto Explorations Ltd., which owns and operates the copper Minto Mine located in Yukon, Canada; Kutcho Copper Corp., which owns the Kutcho copper-zinc project in British Columbia, Canada, and Capstone Mining Chile SpA, which performs exploration for base metal deposits in Chile. Through Acquisition Co.'s wholly owned Canadian subsidiary, Far West Mining Ltd., it is engaged in the exploration for and production of base metals primarily in Chile. The Company, through its subsidiaries, holds exploration properties in Chile and Australia.