Capstone Mining Corp. engages in the exploration and production of base metals in the United States, Mexico, Canada, and Chile. The company explores for copper, molybdenum, silver, zinc, lead, iron, and gold deposits. It holds interests in the Pinto Valley, an open pit copper mine located in Arizona, the United States; and the Cozamin, an underground, copper-silver mine located in the state of Zacatecas, Mexico. The company also owns a 70% interest in copper-iron-gold Santo Domingo development project in Region III, Chile. The company was incorporated in 2009 and is headquartered in Vancouver, Canada.