The destructive environmental legacy of
Gold Rush mining in the Sierra Nevada could last for thousands of years
in the form of ongoing erosion of mercury-laced sediments, according to
new research.
Mercury, a toxic heavy metal, was used in copious amounts in
California’s hydraulic gold mining operations in the mid- and late
1800s.
http://www.lodinews.com/ap/nation/article_a2304dd2-402e-11e3-96f2-10604b9f1f4a.html
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