Panguna mine
Autonomous Region of Bougainville, Papua New Guinea · built 1972
The Panguna mine is a large, inactive copper mine located in Bougainville, Papua New Guinea, formerly operated by Bougainville Copper Ltd. Panguna represents one of the largest copper reserves in Papua New Guinea and in the world, having an estimated remaining reserve of 5.3 billion tonnes of ore copper and almost 20 million ounces of gold. The mine has been closed since 1989, with proposals for reopening having been made since.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).