The Minnesota Supreme Court reinstated two key dam permits for a controversial copper-nickel mining project but sent regulators back to the drawing board on the permit for the mine itself.
A former iron ore processing plant near Hoyt Lakes, Minn., that would become part of a proposed PolyMet copper-nickel mine. (AP Photo/Jim Mone, File)
ST. PAUL, Minn. (CN) The Minnesota Supreme Court has dealt a setback to a controversial proposed mining project in the northeastern portion of the state, giving cause for celebration to environmental groups who argue that the mine would threaten the state’s waterways and especially the Boundary Waters.