>>> BHP Billiton Limited engages in the discovery, acquisition, development, and marketing of natural resources worldwide. It produces iron ore, metallurgical and energy coal, conventional and unconventional oil and gas, copper, aluminum, manganese, uranium, nickel, and silver deposits. The company also explores, develops, produces, and markets petroleum with operating assets located in the deep water Gulf of Mexico, onshore U.S., and Australia, as well as in the United Kingdom, Trinidad and Tobago, and Pakistan; and holds potash exploration rights to approximately 14,500 square kilometers of prospective ground in the Saskatchewan potash basin in Canada. The company was formerly known as BHP Limited and changed its name to BHP Billiton Limited in July 2001. BHP Billiton Limited was founded in 1851 and is headquartered in Melbourne, Australia. BHP Billiton Limited operates as a subsidiary of BHP Billiton Group. <<<