Every single place that Copper-Nickle-Sulfide mining has been done — every. single. location. — the mining companies left behind a destroyed landscape. There have been no exceptions.
This sort of mining can not be done without destroying the landscape.
It is quite possible that Minnesota’s boundary waters are not saving, and we should just mine out the copper.
Or, not.
Look: Continue reading Protecting Minnesota’s Waters from PolyMet Copper-Nickel Mine Pollution