Seven firms were incorporated in Australia (Austral Africa Resources Ltd., BHP Billiton Group, AVZ Minerals Limited, Green Machine Development Corporation, Lindian Resources Ltd., Mawson West Ltd., Tiger Resources Ltd.), three in South Africa (African Rainbow Minerals, AngloGold Ashanti, Chrometco Ltd.), two in the United Kingdom (Mwana Africa PLC, Randgold Resources Ltd.), two from the United States (Century Aluminum Co., Freeport-McMoRan Copper & Gold Inc.), and one each from China (CIC Mining Resources Ltd., with Japanese Eco Energy Group's African subsidiary, Eco Project Company Ltd.), Morocco (Managem SA), and Switzerland (Xstrata plc).