St. Louis County, Minnesota

CLEVELAND-CLIFFS MINORCA MINE INC.

5950 Old Highway 53 N Virginia Mn 55792

MESABI NUGGET DELAWARE LLC

6500 Highway 135 N Aurora Mn 55705

US STEEL CORP - MINNTAC

8819 Old Highway 169 Mountain Iron Mn 55768

LASKIN ENERGY CENTER

5599 Colby Lake Rd Hoyt Lakes Mn 55750

CLIFFS ERIE LLC - MINE AREA

County Road 666 Hoyt Lakes Mn 55750