Rio Tinto Ltd. engages in finding, mining and processing mineral resources. It operates through following segments: Iron Ore, Aluminium, Copper, and Minerals. The Iron ore segment is involved in iron ore mining and salt and gypsum production in Western Australia. The Aluminium segment is involved in bauxite mining, alumina refining, and aluminium smelting. The Copper segment includes mining and refining of copper, gold, silver, molybdenum and other by-products. The Minerals segment offers products such as borates, titanium dioxide feedstock and also includes diamond mining, sorting and marketing. The company was founded on December 17, 1959 and is headquartered in Melbourne, Australia.