Rio Tinto plc (Rio Tinto) is a global mining company. Rio Tinto focuses on finding, mining, and processing the Earth's mineral resources. The Company operates through five product groups, including aluminum, copper, diamonds and minerals, energy product and iron ore. Its aluminum product group includes business includes bauxite mines, large-scale alumina refineries aluminum smelters. The Company's copper core properties include Rio Tinto Kennecott, Oyu Tolgoi, Escondida and Grasberg. Rio Tinto Kennecott supplies approximately 20% of United States refined copper requirements, and is a mining, concentrating, smelting and refining operations property. Rio Tinto Diamonds is a diamond producer, engaged in mining, manufacturing, selling and marketing diamonds. Rio Tinto's Energy product group produces coal and uranium. Rio Tinto operates iron ore portfolio. Exploration joint ventures were established in Canada, the United States, Chile, Mexico and Australia.