Mercury not only contaminates waterways and becomes a serious threat to human health, but is also a dangerous toxin to fish. Fish in the area contain three times more mercury than the safe levels permitted by the World Health Organization. According to the World Wildlife Fund, “After fossil fuel burning, small-scale gold mining is the world’s second-largest source of mercury pollution, contributing around one-third of the world’s mercury pollution.”
http://www.theglobalist.com/StoryId.aspx?StoryId=9504
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