Artisanal and SmallScale Mining in Africa | Geology for ...
22/04/2020 · Artisanal and smallscale gold mining (ASGM) happens in almost all mineral active African countries. Gold is mined in two ways; one on hard rocks where gold found embedded in quartz vein is extracted using simple tools. Mined ore is then crushed either manually using a hammer or by a crusher. The ore is then grinded using ball mill to produce dustsize product. This process is done to .