Ross, F. W. J.2015-12-222015-12-222015http://hdl.handle.net/10539/19240enGold mines and mining--South Africa--Witwatersrand.Gold ores--South Africa--Witwatersrand.Ores--Sampling and estimation.Geology, Economic.The development and some practical applications of a statistical value distribution theory for the Witwatersrand auriferous depositsThesis