Southern Copper Corporation is a copper producer. The Company produces copper, molybdenum, zinc and silver. The Company operates in three segments: Peruvian operations, Mexican open-pit operations and Mexican IMMSA unit. Peruvian operations segment includes the Toquepala and Cuajone mine complexes and the smelting and refining plants, including a precious metals plant industrial railroad and port facilities that service both mines. Mexican open-pit operations segment includes the La Caridad and Buenavista mine complexes and the smelting and refining plants, including a precious metals plant and a copper rod plant and support facilities that service both mines. Mexican IMMSA unit segment includes five underground mines. Its operations include open-pit and underground mining, concentrating, copper smelting, copper refining, copper rod production, solvent extraction/electrowinning, zinc refining, sulfuric acid production, molybdenum concentrate production and silver and gold refining.