Rio Tinto Plc is engaged in the business of exploring, mining and processing of mineral resources. It operates through five product groups: Aluminium, Copper, Diamonds and Minerals, Energy and Iron Ore. The Aluminium product group produces bauxite, alumina and primary aluminum production. The Copper product group produces copper, with valuable by products of gold, molybdenum, silver and nickel. The Diamonds & Minerals product group is engaged in mining, refining and marketing operations across three sectors. The Energy product group includes thermal coal, coking coal and uranium. The Iron ore product group supplies the global seaborne iron ore trade. Rio Tinto was founded in 1873 and is headquartered in London, the United Kingdom.