This video shows what it looks like when a mine waste dam collapses. The proposed Copperwood Mine would create the closest copper sulfide waste pond to Lake Superior in history. Lake Superior is this continent’s largest, cleanest source of surface freshwater. Even if the dam holds, the research is clear: copper sulfide mining is incompatible with clean water. A 2012 peer reviewed study titled, “U.S. Copper Porphyry Mines,” examined copper sulfide mines responsible for 89% of U.S. production. 92%
This video shows what it looks like when a mine waste dam collapses…
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