BHP Billiton Plc operates as a mineral exploration company. The company through its subsidiaries operates its business under five segments: Petroleum & Potash, Copper, Iron Ore, Coal and Aluminum, Manganese and Nickel. The Petroleum & Potash segment engages in the exploration, development and production of oil & gas and potash pre-development. The Copper segment engages in mining of copper, silver, lead, zinc, molybdenum, uranium and gold. The Iron Ore segment engages in the mining of iron ore. The Coal segment engages in the mining of metallurgical coal and thermal coal. The Aluminum, Manganese and Nickel segment engages in mining of bauxite, refining of bauxite into alumina and smelting of alumina into aluminum metal; mining of manganese ore and production of manganese metal and alloys; and mining and production of nickel products. BHP Billiton was founded on June 29, 2001 and is headquartered in London, the United Kingdom.