Mining go Results Found: 8 Button group with nested dropdown U.S. Steel Corporation-MN Ore Operations 8771 Park Ridge Dr. Mountain Iron MN 55768 (218) 749-7200 Twin Metals 400 Miners Drive East Ely MN 55731 (651) 842-6800 NewRange Copper Nickel LLC 6500 Kensington Road Hoyt Lakes MN 55750 (651) 389-4100 MiningMinnesota PO Box 1181 Virginia MN 55792 (218) 410-2059 Iron Mining Association of MN 324 West Superior Street #502 Duluth MN 55802 (651) 402-2475 Cleveland Cliffs - United Taconite 1200 W. Hwy 16 Forbes MN 55738 (218) 744-7800 Cleveland Cliffs - Minorca Cleveland Cliffs - Minorca 5950 Old Hwy 53 Virginia MN 55792 (218) 749-5910 Cleveland Cliffs Cleveland Cliffs 8479 Townline Road Forbes Minnesota 55738 (218) 744-7800