gombu koko - trading mining of coltan sierra leone our coltan mines are located throughout four regions of sierra leone, africa. our clients span the globe fr.read more
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the artisanal mining sector for sierra leone. this report are also miners who have shifted from gold to coltan mining (commonly called 'black stone' in sierra.
the kono district is a well-known mineral producing region for gold, diamonds and coltan. according to documents from the license holder that were issued by the ministry of mines and mineral resources, 'columbite-tantalite is a non-conflict mineral and the license area is a non-conflict region in sierra leone.'read more
drawing upon fieldwork experience in the mines of sierra leone (2007-2016), this paper focuses on the strategies adopted by a mining community to gain aread more