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 businesses with products such as uranium, borates, salt and titanium dioxide feedstock together with coal operations. The Other Operations segment covers the curtailed Gove alumina refinery and Rio Tinto Marine operations. The company was founded in 1873 and is headquartered in London, the United Kingdom.