Cliffs Natural Resources Inc. is a leading mining and natural resources company. The Company is a major supplier of iron ore pellets to the North American steel industry from its mines and pellet plants located in Michigan and Minnesota. Cliffs also produces low-volatile metallurgical coal in the U.S. from its mines located in West Virginia and Alabama.
Primary NAICS Code : 21221 - Iron Ore Mining
Secondary NAICS Code : 3311 - Iron and Steel Mills and Ferroalloy Manufacturing