Mercury Air Emissions from Gold Mines

Predatory fish such as tuna and bass can have dangerous levels of mercury in their flesh, which upon ingestion will build up in humans as well. In 2008, 41 states had advised limiting fish consumption, issuing a total of 3,361 advisories due to mercury contamination. The advisories included over 16 million lakes and over 1.2 million river miles
http://www.earthworksaction.org/issues/detail/mercury_air_emissions_from_gold_mines#.UxiMHc7wb1o