Capstone Mining Corp. engages in the exploration and production of base metals in the United States, Mexico, and Canada. The company explores for copper, molybdenum, silver, zinc, lead, and gold deposits. It holds interests in the Pinto Valley, an open pit copper mine located in Arizona, the United States; the Cozamin, an underground, copper-silver mine located in the state of Zacatecas, Mexico; and the Minto, an open pit copper mine located in Yukon, Canada. The company is headquartered in Vancouver, Canada.