Bocejo is among the 115 million children ages 5 to 17 who work in hazardous occupations worldwide, the United Nations International Labor Organization estimates. About a million children work in mining, and many are exposed to mercury while their growing brains are most vulnerable.
Mercury's perils are well known. The liquid metal can cause tremors, memory loss, brain damage, and other ailments. It accumulates in the body over time, and its effects are irreversible. It can be absorbed through the skin, ingested in food, or inhaled as a vapor.
http://www.philly.com/philly/news/20131229_They_mine_for_gold_at_great_risk_to_health.html
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