It is "a worrying situation because it has ties to organized crime," said Pierre Lapaque, the Colombia representative for the UNODC, while presenting the report in Bogota.
Alluvial gold mining is the process of extracting gold from streambed deposits. It results in contamination of water by mercury and other toxic substances.
read more... https://www.dw.com/en/illegal-gold-mining-on-colombias-rivers-rising-un/a-58665467
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