Rio Tinto is a company that specializes in finding, mining, and processing mineral resources. It operates through four segments: Iron Ore, Aluminium, Copper, and Minerals. The Iron Ore segment is engaged in iron ore mining and salt and gypsum production. The Aluminium segment focuses on bauxite mining, alumina refining, and aluminum smelting. The Copper segment specializes in the mining and refining of copper, gold, silver, molybdenum, and other products, as well as exploration activities. The Minerals segment produces iron ore pellets and concentrates, titanium dioxide, diamonds, and borates.