M
Montana Hard Rock Bureau
3 works on record
Works
Draft Environmental Impact Statement for Stillwater Mining Company Operating Permit No. 00118 Amendment 009 Underground Valley Crossing and Mine Plan
Draft Environmental Impact Statement for Stillwater Mining Company Operating Permit No. 00118 Amendment 009 Underground Valley Crossing and Mine Plan
Zortman and Landusky Mines Reclamation Plan Modifications and Mine Life Extensions : Draft Environmental Impact Statement
Zortman and Landusky Mines Reclamation Plan Modifications and Mine Life Extensions : Draft Environmental Impact Statement
Draft Environmental Assessment for W. R. Grace Vermiculite Mine Closure Plan near Libby, MT : Operating Permit 00010
Draft Environmental Assessment for W. R. Grace Vermiculite Mine Closure Plan near Libby, MT : Operating Permit 00010