this is spontaneous artisanal mining and it has got so big, so quickly. Huge areas of primary forest are being cleared spontaneously. The untouched forests have completely gone. Usually when you get deforestation in the Amazon, people settle or graze cattle, there’s still an ecosystem. But the forest has been completely annihilated. You’re left with ponds laden with mercury. I can’t see how these areas will ever recuperate.
http://www.geographical.co.uk/Magazine/Dossiers/Mining_-_Oct_11.html
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