Mponeng in South Africa is the world's deepest gold mine. The Kola Superdeep Borehole is only 9 inches wide. Russian scientists have been drilling it since 1970. It's now deeper than the deepest ...

Mponeng in South Africa is the world's deepest gold mine. The Kola Superdeep Borehole is only 9 inches wide. Russian scientists have been drilling it since 1970. It's now deeper than the deepest ...

Harmony Gold on Friday said a worker had died at its Mponeng mine, the world's deepest, after a seismic event. S.Africa's Harmony Gold reports fatality at Mponeng mine February 21, 2025 South ...

Johannesburg was discovered in 1886, following the discovery of the main Witwatersrand gold reef, which today houses the world's deepest mine. The Witwatersrand, known locally as the Rand and ...