So, sadly it is no surprise that the mighty Pra River runs sullied. The cause has been known for a long time now and the effects are obvious now too. Metallic mercury, which is commonly used in gold extraction by the artisanal miners, is highly toxic, and other cancer-causing chemicals have been found in the river – toxins that eventually contaminate the fish and drinking water that local people depend on. Officials have warned against the severe health and environmental impactsfor years.
http://politicsofpoverty.oxfamamerica.org/2016/08/troubled-waters-artisanal-mining-ghana/
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