Written in Stone

In the 10 years since a federal agency canceled its political risk insurance, Freeport-McMoRan Copper & Gold Inc. has dumped the equivalent of 190 Astrodomes full of tailings into the local river system. These tailings – which cover a stretch of river some 30 miles long – may be releasing heavy metals such as mercury, cadmium, and selenium. However, no known independent testing of the tailings has been done.
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