In addition to wreaking direct havoc on tropical forests, gold mining
releases sediment into rivers, with severe effects on aquatic life.
Other recent work has shown that Perú's gold mining has contributed to
widespread mercury pollution affecting the entire food chain, including
the food ingested by people throughout the region. Miners also hunt wild
game, depleting the rainforest fauna around mining areas, and
disrupting the ecological balance for centuries to come.
http://www.sciencedaily.com/releases/2013/10/131028162800.htm
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