Heap Leaching of Gold and Silver Ores ScienceDirect
01/01/2016· The operating cost plus debt service for a medium sized mill is typically $39/t of ore treated, whereas the comparable cost for the heap is $19/t, equating to a differential operating cost plus debt service of $20/t for milling compared with heap leaching. Assuming a gold price of $40/g , the differential cost would require the milling option to deliver
