Rio Tinto Plc engages in the exploration, mining, and processing of mineral resources. It operates through the following business segments: Iron Ore, Aluminium, Copper, and Minerals. The Iron Ore segment supplies iron ore mining and salt and gypsum production. The Aluminium segment produces bauxite, alumina and primary aluminum. The Copper segment offers gold, silver, molybdenum and other by-products. The Minerals includes