EX-21 3 clf-2018123110xkex21.htm EXHIBIT 21
Exhibit 21

SIGNIFICANT SUBSIDIARIES
CLEVELAND-CLIFFS INC. AS OF DECEMBER 31, 2018

Name | Cliffs' Effective Ownership | Place of Incorporation
Cliffs Mining Company | 100% | Delaware, USA
Cliffs Minnesota Mining Company | 100% | Delaware, USA
Cliffs TIOP Holding, LLC | 100% | Delaware, USA
Cliffs TIOP, Inc. | 100% | Michigan, USA
Cliffs UTAC Holding LLC | 100% | Delaware, USA
The Cleveland-Cliffs Iron Company | 100% | Ohio, USA
Northshore Mining Company | 100% | Michigan, USA