Exhibit 21 Subsidiaries of Cleveland-Cliffs Inc
Jurisdiction of Incorporation or Name of Subsidiary Organization - ------------------ ------------ Cleveland-Cliffs Company (1) Ohio Cleveland-Cliffs Ore Corporation (1), (2) Ohio Cliffs Biwabik Ore Corporation (2) Minnesota Cliffs Copper Corp. Ohio Cliffs Empire, Inc. (1), (3) Michigan Cliffs Engineering, Inc. (1) Colorado Cliffs Forest Products Company (1) Michigan Cliffs Fuel Service Company (1) Michigan Cliffs IH Empire, Inc. (1) Michigan Cliffs Marquette, Inc. (1), (2) Michigan Cliffs MC Empire, Inc. (1), (3) Michigan Cliffs Mining Company (9) Delaware Cliffs Mining Services Company Delaware Cliffs Minnesota Minerals Company Minnesota Cliffs Oil Shale Corp. Colorado Cliffs of Canada Limited (1) Ontario, Canada Cliffs Reduced Iron Corporation Delaware Cliffs Resources, Inc. (6) Delaware Cliffs Synfuel Corp. Utah Cliffs Tilden, Inc. (1), (15) Michigan Cliffs TIOP, Inc. (1), (15) Michigan Empire-Cliffs Partnership (3) Michigan Empire Iron Mining Partnership (7) Michigan Escanaba Properties Company (1), (8) Michigan Escanaba Properties Partnership (8) Michigan Hibbing Taconite Company, a joint venture (9) Minnesota Kentucky Coal Company Delaware Lake Superior & Ishpeming Railroad Company (6) Michigan Lasco Development Company (6) Michigan Marquette Iron Mining Partnership (2) Michigan Mattagami Mining Co. Limited (10) Ontario, Canada Mesabi Radio Corporation (10) Minnesota Minerais Midway Ltee-Midway Ore Company Ltd. (10) Quebec, Canada Mines Hilton Ltee-Hilton Mines, Ltd. (10) Quebec, Canada Northshore Mining Company (4) Delaware Northshore Sales Company (5) Ohio Northwest Iron Co. Ltd. (11) Delaware Peninsula Land Corporation (10) Michigan
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Jurisdiction of Incorporation or Name of Subsidiary Organization - ------------------ ------------ Pickands Erie Corporation (10) Minnesota Pickands Hibbing Corporation (9) Minnesota Pickands Mather & Co. International Delaware Pickands Mather Services Inc. (10) Delaware Pickands Radio Co. Ltd. (10) Quebec, Canada Robert Coal Company (12) Delaware Savage River Motor Inn Pty. Ltd. (13) Tasmania Seignelay Resources, Inc. (10) Delaware Silver Bay Power Company (5) Delaware Syracuse Mining Company (10) Minnesota Tetapaga Mining Company Limited (1) Ohio The Cleveland-Cliffs Iron Company Ohio The Cleveland-Cliffs Steamship Company (1) Delaware The Mesaba-Cliffs Mining Company (14) Minnesota Tilden Mining Company L.C. (15) Michigan Virginia Eastern Shore Land Co. (1) Delaware
________________________________________________________________________________ (1) The named subsidiary is a wholly-owned subsidiary of The Cleveland-Cliffs Iron Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. (2) Marquette Iron Mining Partnership is a Michigan partnership. Cleveland-Cliffs Ore Corporation and Cliffs Marquette, Inc., wholly-owned subsidiaries of The Cleveland-Cliffs Iron Company, have a combined 100% interest in Marquette Iron Mining Partnership. Cleveland-Cliffs Ore Corporation also owns 100% of Cliffs Biwabik Ore Corporation. (3) Empire-Cliffs Partnership is a Michigan partnership. Cliffs MC Empire, Inc. and Cliffs Empire, Inc., wholly-owned subsidiaries of The Cleveland-Cliffs Iron Company, have a combined 100% interest in Empire-Cliffs Partnership. (4) The named subsidiary is a wholly-owned subsidiary of Cliffs Minnesota Minerals Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. (5) The named subsidiary is a wholly-owned subsidiary of Northshore Mining Company, which in turn is a wholly-owned subsidiary of Cliffs Minnesota Minerals Company. (6) Cliffs Resources, Inc. owns a 99.5% interest in Lake Superior & Ishpeming Railroad Company. Lasco Development Company is a wholly-owned subsidiary of Lake Superior & Ishpeming Railroad Company. 67 (7) Empire Iron Mining Partnership is a Michigan partnership. The Cleveland-Cliffs Iron Company has a 22.56% indirect interest in the Empire Iron Mining Partnership. (8) Escanaba Properties Partnership is a Michigan partnership. Escanaba Properties Company, a wholly-owned subsidiary of The Cleveland-Cliffs Iron Company, has a 87.5% interest in the Escanaba Properties Partnership. (9) Cliffs Mining Company has a 10% and Pickands Hibbing Corporation, a wholly-owned subsidiary of Cliffs Mining Company, has a 5% interest in Hibbing Taconite Company, a joint venture. (10) The named subsidiary is a wholly-owned subsidiary of Cliffs Mining Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. (11) Cliffs Mining Company owns a 72.4% interest in Northwest Iron Co. Ltd. (12) The named subsidiary is a wholly-owned subsidiary of Kentucky Coal Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. (13) The named subsidiary is a wholly-owned subsidiary of Pickands Mather & Co. International, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. (14) The Cleveland-Cliffs Iron Company owns a 86.4% interest in The Mesaba-Cliffs Mining Company. (15) Tilden Mining Company L.C. is a Michigan limited liability company. Cliffs Tilden, Inc. and Cliffs TIOP, Inc., wholly-owned subsidiaries of The Cleveland-Cliffs Iron Company, have a combined 40% interest in Tilden Mining Company L.C. 68