McEwen Mining Inc. engages in the exploration, development, production, and sale of gold and silver deposits in the United States, Canada, Mexico, and Argentina. The company also explores for copper deposits. It holds a 100% interest in the Tonkin property and Gold Bar mine located in Nevada, United States; the Froome mine, the Stock West project, and the Grey Fox, as well as the Fox Complex comprising 118 parcels representing patents and leases and 163 unpatented mining claims totaling 27 square miles in mining rights, and 11 square miles in surface rights located in Ontario, Canada; and the El Gallo Project and Fenix silver-gold project located in Sinaloa, Mexico. The company also holds 47.7% interest in the Los Azules Copper Project located in the province of San Juan, Argentina; and 49% interest in the San José mine located in Santa Cruz, Argentina, as well as interests in the Elder Creek property located in Nevada, United States. In addition, it holds interests in and a portfolio of exploration properties in Nevada, Canada, Mexico, and Argentina. The company was formerly known as US Gold Corporation and changed its name to McEwen Mining Inc. in January 2012. McEwen Mining Inc. was incorporated in 1979 and is headquartered in Toronto, Canada.