Mine Mugshot: Mponeng Gold Mine

Where: 90 km SW of Johannesburg, Gauteng province, South Africa

Mine Type: Gold

Operations: 1986 to current

Owners: Harmony Gold since October 2020

Output:  R4 - 750 million (South African Rands) worth in Gold

Notable Facts: This is the world's deepest mine at over 2.5 miles below the earth's surface. To get to the bottom of the mine, the ride takes over an hour. In 2008, researchers found a previously undiscovered bacterium called Desulforudis audaxviator a few kilometers deep in the mine. 

Photo: http://www.mining-technology.com/projects/mponeng/