Barrick Gold Corporation operates as a gold mining company with operating and development properties in the United States, Canada, Australia, Peru, Chile, Argentina, and Tanzania. The company has 100% interest in Goldstrike Property, Nevada; Eskay Creek Mine, British Columbia; Holt-McDermott Mine, Ontario; Pierina Mine, Peru; Plutonic Mine, Western Australia; Darlot Mine, Western Australia; Lawlers Mine, Western Australia; and Bulyanhulu Mine, Tanzania. Barrick Gold also has interests in various other properties, such as Round Mountain Mine, Nevada; Hemlo Property, Ontario; Marigold Mine, Nevada; Kalgoorlie Mine, Western Australia; and Kalgoorlie Mine, Western Australia. As of December 31, 2004, it had 89.1 million ounces of total proven and probable gold and mineral reserves. The company was founded in 1983 and is headquartered in Toronto, Canada.