Rio Tinto - http://www.riotinto.com/ A natural resource company with interests in copper, gold, iron ore, coal, aluminum, and other raw materials throughout the world.
Caledonia Mining Corporation - http://www.caledoniamining.com/ An exploration, development and mining company with a gold operation in South Africa.
Straits Resources - http://www.straits.com.au/ Focused on acquiring and developing assets within the gold, copper and bulk commodities sectors.
