Creamer Media's Shannon de Ryhove speaks to Mining Weekly editor Martin Creamer about the change needed to mine the Witwatersrand basin's remaining 1.1-billion resource ounces of gold that current mining methods cannot economically extract.
Mining Weekly
https://www.miningweekly.com/article/absolute-change-needed-to-mine-remaining-13bn-gold-ounces-2014-08-28