Minnesota Supreme Court hits pause on PolyMet permit to mine
April 29, 2021
The Minnesota Supreme Court has overturned PolyMet's permit to mine in Minnesota, sending the company's central permit back to state regulators for further review.
It is a fresh blow to what would be the state's first copper mine, a $1 billion open-pit mine project near Babbitt and Hoyt Lakes that has stalled with several permits on hold or under review.
The state's highest court ruled Wednesday that the state Department of Natural Resources (DNR) must hold a trial-like contested-case hearing on PolyMet's plan to line the mine's tailings dam with a bentonite clay mixture to protect against contaminated waste leaking out.