Mercury is a toxic element that can cause neurological disorders when is
continuously in contact with the organism, either through elemental
mercury by inhalation or consumption of fish contaminated with mercury.
Mercury from artisanal gold mining is used to concentrate gold in an
amalgam of both elements. Later, it is burned in order to rid of the
mercury and to recover the gold. During this amalgamation process,
accidental and intentional discharges of mercury can occur.
http://www.azocleantech.com/news.aspx?newsID=21031
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