Capstone Copper Corp. is a copper mining company. It owns and operates the Pinto Valley copper mine located in Arizona, United States of America, the Cozamin copper-silver mine located in Zacatecas, Mexico, and the Mantos Blancos copper-silver mine located in the Antofagasta region, Chile. It also owns 70% of the Mantoverde copper-gold mine, located in the Atacama region, Chile. In addition, it owns the fully permitted Santo Domingo copper-iron-gold project, located 30 kilometers (km) northeast of Mantoverde in the Atacama region, Chile, as well as a portfolio of exploration properties in the America. The Pinto Valley Mine is an open-pit, copper mine located in Arizona, United States of America. The Cozamin Mine is a copper-silver underground mine with a surface milling facility, located 3.6 km north-northwest of Zacatecas City, Mexico. The Mantoverde copper-gold mine consists of four pits situated along the Mantoverde fault, each of which contains both sulphide and oxide ores.