In Ghana, illegal small-scale gold miners known as galamsey – derived from the phrase “gather them and sell” – operate independently of licenced mining companies. Galamseyers or orpailleurs (French version of the word) use crude and unhealthy methods to dig tunnels and sluices in search of gold in raw metallic dust from which they process oxide or sulphide gold ore using liquid mercury.
read more... https://africanews.space/ghana-is-using-satellite-imagery-to-combat-illegal-mining/
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