Olympic Dam mine

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The Olympic Dam mine is a large poly-metallic underground mine located in South Australia, 550 km (340 mi) NNW of Adelaide. It is the fourth largest copper deposit and the largest known single deposit of uranium in the world. Copper is the largest contributor to total revenue, accounting for approximately 70% of the mine's revenue, with the remaining 25% from uranium, and around 5% from silver and gold. BHP has owned and operated the mine since 2005. The mine was previously owned by Western Mining Corporation. Since the 1970s environmentalists, traditional owners and others have campaigned against the mine, largely on the basis of its contribution to the nuclear cycle and its use of underground water. Since it opened in 1988, an extensive underground mine, an integrated metallurgical processing plant and expansive open-air tailings storage facilities have been constructed. The adjacent Olympic Dam mining centre and the nearby township of Roxby Downs service the mine and accommodate its workforce. Daily flights to and from Adelaide are provided via the Olympic Dam Airport. BHP planned to expand the mine by establishing a new open cut pit and building extensive supporting infrastructure. In 2012 the expansion was postponed indefinitely pending investigation of a "new and cheaper design".