Alejandro Rivera Stambuk

Part of Antofagasta Plc, EL Tesoro provides copper mining.

Twin Metals Minnesota LLC provides copper, nickel, platinum and related mineral mining services. The company was founded in January 2010 and is headquartered in St. Paul, MN.

Minera Michilla SA is a mining company. It is engaged in producing copper, gold and their by-products in the open pit and underground mine, and the cathode production plant. The company was founded on May 29, 1959 and is headquartered in Santiago, Chile.

Corporación Nacional del Cobre de Chile engages in the exploration, mining, processing, and production of copper. The firm also produces copper concentrates, blister and anode copper, molybdenum, anode slime, and sulfuric acid. It operates through the following divisions: Chuquicamata, Radomiro Tomic, Salvador, Andina, El Teniente, Ventanas, Gabriela Mistral, and Ministro Hales. The company was founded on April 1, 1976 and is headquartered in Santiago, Chile.