Barrick Gold Corporation is the largest gold mining company in the world, with its headquarters in Toronto, Ontario, Canada. The company has mining operations in Argentina, Australia, Canada, Chile, the Dominican Republic, Papua New Guinea, Peru, Saudi Arabia, the United States and Zambia. More than 75% of Barrick's gold production comes from the Americas region. In 2016, it produced 5.52 million ounces of gold at all-in sustaining costs of US $798/ounce and 415 million pounds of copper at all-in sustaining costs of $2.05/pound. As of December 31, 2016, the company had 85.9 million ounces of proven and probable gold reserves.