BHP Billiton is an Anglo-Australian multinational mining, oil and gas company headquartered in Melbourne, Australia and with a major management office in London, United Kingdom. It is the world's largest mining company measured by 2011 revenues and as of February 2011 was the world's third-largest company measured by market capitalisation. BHP Billiton was created in 2001 through the merger of the Australian Broken Hill Proprietary Company Limited (BHP) and the Anglo-Dutch Billiton plc. The result is a dual-listed company. The Australian-registered BHP Billiton Limited, which is the majority partner, has a primary listing on the Australian Securities Exchange and is the largest company in Australia measured by market capitalisation. The UK-registered BHP Billiton Plc has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. It had a market capitalisation of approximately _39.
Contributions by Dormskirk, ScottDavis, and Diasimon2003.