Rio Tinto Group engages in finding, mining, and processing mineral resources worldwide. The company offers aluminium, silver, molybdenum, copper, diamonds, gold, borates, titanium dioxide, salt, iron ore, and uranium. It is also involved in the alumina production; primary aluminium smelting; bauxite mining; alumina refining; and ilmenite mining, as well as provision of gypsum. Rio Tinto Group was incorporated in 1873 and is headquartered in London, the United Kingdom.