Ann: Quarterly Activities and Cash Flow Reports, page-66

1. South Deep gold mine – 32.8 million ounces (Moz)

South Deep gold mine is the largest gold mine in the world, by reserves. Located 45km south-west of Johannesburg in the Witwatersrand Basin, South Africa, South Deep is also the seventh deepest mine in the world, with a mine depth up to 2,998m below the surface.

The managed mineral reserve at South Deep as of December 2018 stood at 32.8Moz.

South Deep was known by the name Western Areas Gold Mine until 2000. Mining operations at the site were started in 1961. Goldfields became the owner and operator of the South Deep gold mine in 2006. The underground gold mine is operated through two shaft systems, known as the South Shaft complex and the Twin Shaft complex.

South Deep produced 157,100oz of gold in 2018, compared to 281,300oz in 2017. The mine life of South Deep is expected to be extended up to 2092.”

https://www.mining-technology.com/analysis/feature-top-ten-biggest-gold-mines-south-africa/