Barrick Gold Corporation is the largest gold mining company in the world, with its headquarters in Toronto, Ontario, Canada. Barrick is currently undertaking mining projects in Argentina, Australia, Canada, Chile, the Dominican Republic, Papua New Guinea, Peru, Saudi Arabia, the United States and Zambia. For 2013, it produced 7.2 million ounces of gold at all-in sustaining costs of US $915/ounce and 539 million pounds of copper at C1 cash costs of $1.92/pound. As of December 31, 2013, its proven and probable mineral reserves were 104.1 million ounces of gold, 888 million ounces of silver contained within gold reserves, and 14.0 billion pounds of copper. On January 20, 2006, Barrick acquired a majority share of Placer Dome. The production of the combined organization moved Barrick to its current position as the largest gold producer, ahead of Newmont Mining Corporation. Barrick Gold Corporation evolved from a privately held North American oil and gas company, Barrick Resources. After suffering huge financial losses in oil and gas, principal Peter Munk decided to focus on gold. Barrick Resources Corporation became a publicly traded company on May 2, 1983, listing on the Toronto Stock Exchange.