Rio Tinto Limited is a mining and materials company. It operates in 35 countries and produces iron ore, copper, aluminum, critical minerals and other materials needed for the global energy transition. Its segments include Iron Ore, Aluminum, Copper, and Minerals. The iron ore segment includes iron ore mining and salt and gypsum production in Western Australia. Its iron ore operations in the Pilbara comprise an integrated network of 18 iron ore mines and four independent port terminals. The aluminum segment includes bauxite mining, alumina refining, and aluminum smelting and recycling. The copper segment includes mining and refining of copper, gold, silver, molybdenum, other by-products and licensing of extraction technologies. The minerals segment includes mining and processing of borates, diamonds, iron concentrate and pellets from the Iron Ore Company of Canada, lithium and titanium dioxide feedstock.