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550,000 abandoned mines, $50 billion to clean the worst ones

Preface. Below are excerpts of a US House 2010 congressional hearing on cleaning up abandoned mines. Abandoned mines can cause soil erosion, heavy metal contamination (i.e., cyanide, lead, arsenic, mercury, uranium), and acid drainage that threatens thousands of streams and … Continue reading

Posted in Chemical Pollution, Congressional Record U.S., Hazardous Waste, Mining, Pollution, Water Pollution | Tagged , , , , | 1 Comment