mine

Environmentalists file 2 more challenges to Minnesota mine

Environmental groups have filed two more lawsuits challenging the Interior Department's decision to reinstate the federal mineral rights leases for the proposed Twin Metals copper-nickel mine in northeastern Minnesota.

Twin Metals wants to build ore processor closer to BWCA

Twin Metals says its updated plan for an underground copper-nickel mine near Ely includes a 100-acre ore processing facility on the banks of Birch Lake, which puts it closer to the Boundary Waters Canoe Area Wilderness than earlier planned.