The deadly effects of mercury are equally hazardous to small-scale miners. Most use mercury to separate gold from rock, spreading poison in both gas and liquid forms. UNIDO estimates that one-third of all mercury released by humans into the environment comes from artisanal gold mining. This turns places like La Rinconada into a sort of Shangri-la in reverse: The pursuit of a metal linked to immortality only serves to hasten the miners' own mortality.
http://ngm.nationalgeographic.com/2009/01/gold/larmer-text/3
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