Mineral Processing KCGM
The sulphide ore from the Open Pit is refractory and requires a complex series of processes to extract the gold. The freemilling Mt Charlotte ore, which is easier to process, was formerly directleached after grinding but is now combined in small batches with the Fimiston sulphide process. The ore from the Fimiston Open Pit and Mt Charlotte Underground Mine is processed at KCGMs Fimiston and Gidji