Rio Tinto Limited is an Australia-based mining company. The Company's primary activities includes minerals and metals exploration, production and processing, development, and marketing. The Company operates through four segments: Iron Ore, Aluminum, Copper and Diamonds and Energy and Minerals. The Iron Ore segment activity includes Iron ore mining and salt and gypsum production in Western Australia. The Aluminum segment activity includes Bauxite mining, alumina refining and aluminum smelting. The Copper and Diamonds segment activity includes Mining and refining of copper, gold, silver, molybdenum and other by-products, exploration activities, diamond mining, sorting, and marketing. Energy and Minerals segment activity includes businesses with products such as uranium, borates, and titanium dioxide feedstock . Its products include Iron Ore, Aluminum, copper, borates, lithium diamonds, salt and titanium dioxide.