myths and realities in artisanal gold mining mercury contaminationnate mercury use in gold extraction. The study is .. Gold Ore Processing Centers and Mercury . .. Arguments for not Using a Retort at GMP Sites (Adapted from ... pieces of equipment units and agitators as well as high costs due to cyanide.gold ore processing machinery without using mercury,Equipment Specification for Sudan - IW:LearnThe chosen artisanal gold mining site lies in the middle of Ingessana Hills, 80 km . There is no reliable information on gold production in Ingessana Hills prior to late 1996. . As the gold amalgam is roasted in bonfires, the amount of Hg in the.
gold ore processing machinery without using mercury