Grasberg Open Pit Copper Mine, Tembagapura, Irian Jaya, …
Grasberg has produced 528 billion ounces of copper and 53Moz of gold during the period between 1990 and 2019. The mine is jointly owned by Freeport McMoran (48.8%) and Inalum (51.2%). Credit: Arttoday via Shutterstock. The Grasberg mine contains the single largest known gold reserve and the second largest copper reserves in the world.