40 Percent Of The World's Gold Is 3 Billion Years Old Scientists have for the first time directly dated gold from South Africa's Witwatersrand gold deposits,
Archaean Atmospheric Evolution Evidence From the Witwatersrand Gold Fields, South Africa (1)
Remediation of Acid Mine Drainage Using Metallurgical Slags
Precious Metals Mining in South Africa to 2020
The Top Ten Deepest Mines in the World
The Impact of Gold Mining on Mercury Pollution in the Witwatersrand Basin, South Africa
Princeton University, University of the Free State, South Africa,
GOLDfields_southdeep_MAY11_emea-bro
Gh aga operza west wits 2012
Gh aga operza vaal river 2012
