Exhibit 21

Subsidiaries of Cleveland-Cliffs Inc

 

Name of Subsidiary

   Jurisdiction of
Incorporation or
Organization

CALipso Sales Company (3)

   Delaware

Centennial Asset Participações Amapá S.A.

   Brazil

Cleveland-Cliffs International Holding Company (13) (14)

   Delaware

Cleveland-Cliffs Ore Corporation (1) (2)

   Ohio

Cliffs and Associates Limited (3)

   Trinidad

Cliffs Asia-Pacific Pty Limited (13)

   Australia

Cliffs Asia-Pacific Holdings Pty Limited (13)

   Australia

Cliffs Australia Coal Pty Ltd (13)

   Australia

Cliffs Australia Holdings Pty Ltd (13)

   Australia

Cliffs Australia Washplant Operations Pty Ltd (13)

   Australia

Cliffs Biwabik Ore Corporation (2)

   Minnesota

Cliffs Empire, Inc. (1)

   Michigan

Cliffs Erie L.L.C. (8)

   Delaware

Cliffs (Gibraltar) Holdings Limited (15)

   Gibraltar

Cliffs (Gibraltar) Holdings Limited Luxembourg S.C.S. (16)

   Luxembourg

Cliffs (Gibraltar) Limited (16)

   Gibraltar

Cliffs (Gibraltar) Mather I Limited (14)

   Gibraltar

Cliffs International Luxembourg S.à.r.l. (16)

   Luxembourg

Cliffs International Lux I S.à.r.l. (14)

   Luxembourg

Cliffs International Lux II S.à.r.l. (14)

   Luxembourg

Cliffs International Lux IV S.à.r.l. (14)

   Luxembourg

Cliffs International Management Company LLC

   Delaware

Cliffs International Mineração Brasil Ltda. (14)

   Brazil

Cliffs International Participações Brasil Ltda. (14)

   Brazil

Cliffs Marquette, Inc. (1) (2)

   Michigan

Cliffs Mining Company

   Delaware

Cliffs Mining Services Company

   Delaware

Cliffs Minnesota Mining Company

   Delaware

Cliffs Natural Stone, LLC (11)

   Minnesota

Cliffs Oil Shale Corp. (2)

   Colorado

Cliffs Reduced Iron Corporation

   Delaware

Cliffs Reduced Iron Management Company (4)

   Delaware

Cliffs Sales Company

   Ohio

Cliffs Synfuel Corp. (2)

   Utah

Cliffs TIOP, Inc. (1) (5)

   Michigan

Cliffs (US) Mather I LLC (14)

   Delaware

Empire Iron Mining Partnership (6)

   Michigan

Hibbing Taconite Company, a joint venture (7)

   Minnesota

IronUnits LLC

   Delaware

Lake Superior & Ishpeming Railroad Company

   Michigan

Lasco Development Corporation

   Michigan

MMX Amapá Mineração Ltda. (14)

   Brazil

Marquette Iron Mining Partnership (2)

   Michigan

Marquette Range Coal Services Company (5) (6)

   Michigan

Minerais Midway Ltee-Midway Ore Company Ltd. (8)

   Quebec, Canada

Northshore Mining Company

   Delaware

Pickands Hibbing Corporation (7)

   Minnesota

Portman Limited (13)

   Australia

Portman Iron Ore Limited (13)

   Australia

Republic Wetlands Preserve LLC (2)

   Michigan


Name of Subsidiary

   Jurisdiction of
Incorporation or
Organization

Sonoma Coal Project, a joint venture (13)

   Australia

Sonoma Mine Management Pty Ltd (13)

   Australia

Seignelay Resources, Inc. (8)

   Delaware

Silver Bay Power Company (9)

   Delaware

Syracuse Mining Company (8)

   Minnesota

The Cleveland-Cliffs Iron Company

   Ohio

The Cleveland-Cliffs Steamship Company (1)

   Delaware

Tilden Mining Company L.C. (5)

   Michigan

United Taconite LLC (12)

   Delaware

Wabush Iron Co. Limited (8) (10)

   Ohio

As of May 23, 2007


(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 (“Marquette 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 percent interest in the Marquette Partnership. Cleveland-Cliffs Ore Corporation also owns 100 percent of Cliffs Biwabik Ore Corporation. The Marquette Partnership owns 100 percent of Cliffs Oil Shale Corp., Cliffs Synfuel Corp. and Republic Wetlands Preserve LLC.

 

(3) Cliffs and Associates Limited is a Trinidad corporation. Cliffs Reduced Iron Corporation has an 82.39 percent interest in Cliffs and Associates Limited. CALipso Sales Company is a wholly-owned subsidiary of Cliffs and Associates Limited.

 

(4) The named subsidiary is a wholly-owned subsidiary of Cliffs Reduced Iron Corporation, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc.

 

(5) Tilden Mining Company L.C. is a Michigan limited liability company. Cliffs TIOP, Inc., a wholly-owned subsidiary of The Cleveland-Cliffs Iron Company, has an 85 percent interest in Tilden Mining Company L.C. Tilden Mining Company L.C. has a 51 percent interest in Marquette Range Coal Service Company.

 

(6) Empire Iron Mining Partnership is a Michigan partnership. The Cleveland-Cliffs Iron Company has a 79 percent indirect interest in the Empire Iron Mining Partnership. Empire Iron Mining Partnership has a 48.57 percent interest in Marquette Range Coal Service Company.

 

(7) Cliffs Mining Company has a 10 percent and Pickands Hibbing Corporation, a wholly-owned subsidiary of Cliffs Mining Company, has a 13 percent interest in Hibbing Taconite Company, a joint venture.

 

(8) The named subsidiary is a wholly-owned subsidiary of Cliffs Mining Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc.

 

(9) The named subsidiary is a wholly-owned subsidiary of Northshore Mining Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc.

 

(10) Wabush Iron Co. Limited is an Ohio corporation. Wabush Iron Co. Limited owns a 26.83 percent interest in Wabush Mines.

 

(11) Cliffs Natural Stone, LLC is a Minnesota limited liability company. Cliffs Erie L.L.C., a wholly-owned subsidiary of Cliffs Mining Company, has a 56 percent interest in Cliffs Natural Stone, LLC.

 

(12) United Taconite LLC is a Delaware limited liability company. Cliffs Minnesota Mining Company, a wholly-owned subsidiary of Cleveland-Cliffs Inc, has a 70 percent interest in United Taconite LLC.

 

(13)

Cliffs Asia-Pacific Pty Limited is an Australian corporation. Cliffs Asia-Pacific Holdings Pty Limited owns 100 percent of Cliffs Asia-Pacific Pty Limited. Cliffs Asia-Pacific Pty Limited owns 100 percent of Cliffs Australia Coal Pty Ltd. Cliffs Australia Coal Pty Ltd. owns 100 percent of Cliffs Australia Washplant


 

Operations Pty Ltd. as well as 8.3 percent of the mining leases of the Sonoma Coal Project, a joint venture, and 45 percent of Sonoma Mine Management Pty Ltd. an Australian corporation, resulting in an effective 45 percent economic interest in the Sonoma Coal Project. Cliffs Asia-Pacific Pty Limited also has an 80.448 percent interest in Portman Limited. Portman Iron Ore Limited is a wholly-owned subsidiary of Portman Limited. Cliffs Asia-Pacific Holdings Pty Limited is a wholly-owned subsidiary of Cleveland-Cliffs International Holding Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. The name of Cleveland-Cliffs Australia Pty Limited has been changed to Cliffs Asia-Pacific Pty Limited. The name of Cleveland-Cliffs Australia Holdings Pty Limited has been changed to Cliffs Asia-Pacific Holdings Pty Limited. Cliffs Australia Holdings Pty Ltd is a wholly-owned subsidiary of Cleveland-Cliffs International Holding Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc.

 

(14) Cliffs International Lux I S.à.r.l. is a Luxembourg limited liability company, which is a wholly-owned subsidiary of Cleveland-Cliffs International Holding Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. Cliffs International Lux I S.à.r.l. owns 100 percent of Cliffs International Lux II S.à.r.l. Cliffs International Lux II S.à.r.l. owns 100 percent of Cliffs International Lux IV S.à.r.l. Cliffs International Lux IV S.à.r.l. owns 100 percent of Cliffs (US) Mather I LLC, Cliffs (Gibraltar) Mather I Limited and Centennial Asset Participações Amapá S.A. Centennial Asset Participações Amapá S.A. has a 30 percent interest in MMX Amapá Mineração Ltda., which is a Brazilian limited liability company. Cliffs International Lux I S.à.r.l. and Cliffs International Lux II S.à.r.l. each have a 50 percent interest in Cliffs International Mineração Brasil Ltda., which is a Brazilian limited liability company. Cliffs International Lux IV S.à.r.l. and Cliffs (US) Mather I LLC have a combined 100 percent interest in Cliffs International Participações Brasil Ltda., which is a Brazilian limited liability company.

 

(15) The named subsidiary is a wholly-owned subsidiary of Cleveland-Cliffs International Holding Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc.

 

(16) Cliffs (Gibraltar) Holdings Limited is a Gibraltar limited liability company, which is a wholly-owned subsidiary of Cleveland-Cliffs International Holding Company, which in turn is a wholly-owned subsidiary of Cleveland-Cliffs Inc. Cliffs (Gibraltar) Holdings Limited owns 100 percent of Cliffs (Gibraltar) Limited, which is a Gibraltar limited liability company. Cliffs (Gibraltar) Holdings Limited and Cliffs (Gibraltar) Limited have a combined 100 percent interest in Cliffs (Gibraltar) Holdings Limited Luxembourg S.C.S., which is a Luxembourg corporation. Cliffs (Gibraltar) Holdings Limited Luxembourg S.C.S. owns 100 percent of Cliffs International Luxembourg S.à.r.l., which is a Luxembourg limited liability company.