Exhibit 21
CLEVELAND-CLIFFS INC AND SUBSIDIARIES
As of December 31, 2007
| Name |
Cliffs’ Effective Ownership |
Place of Incorporation | |||
| Cleveland-Cliffs Inc |
Ohio, USA | ||||
| The Cleveland-Cliffs Iron Company |
100 | % | Ohio, USA | ||
| Cleveland-Cliffs Ore Corporation |
100 | % | Ohio, USA | ||
| Cliffs Biwabik Ore Corporation |
100 | % | Minnesota, USA | ||
| Cliffs Marquette, Inc. |
100 | % | Michigan, USA | ||
| Marquette Iron Mining Partnership |
100 | % | Michigan, USA | ||
| Cliffs Oil Shale Corp. |
100 | % | Colorado, USA | ||
| Cliffs Synfuel Corp. |
100 | % | Utah, USA | ||
| Republic Wetlands Preserve LLC |
100 | % | Michigan, USA | ||
| The Cleveland-Cliffs Steamship Company |
100 | % | Delaware, USA | ||
| Cliffs Empire, Inc. |
100 | % | Michigan, USA | ||
| Empire Iron Mining Partnership |
79 | % | Michigan, USA | ||
| Cliffs TIOP, Inc. (fka Cliffs MC Empire, Inc.) |
100 | % | Michigan, USA | ||
| Tilden Mining Company L.C. |
85 | % | Michigan, USA | ||
| Marquette Range Coal Service Company |
82.086 | % | Michigan, USA | ||
| MABCO Steam Company, LLC |
40.467 | % | Delaware, USA | ||
| Cliffs Mining Company (fka Pickands Mather & Co.) |
100 | % | Delaware, USA | ||
| Hibbing Taconite Company |
23 | % | Minnesota, USA | ||
| Pickands Hibbing Corporation |
100 | % | Minnesota, USA | ||
| Hibbing Development Company |
39 | % | Minnesota, USA | ||
| Seignelay Resources, Inc. (fka Angola Services Corporation) |
100 | % | Delaware, USA | ||
| Syracuse Mining Company |
100 | % | Minnesota, USA | ||
| Wabush Iron Co. Limited |
100 | % | Ohio, USA | ||
| Arnaud Railway Company |
26.830 | % | Quebec, Canada | ||
| Northern Land Company Limited |
13.410 | % | Newfoundland, Canada | ||
| Knoll Lake Minerals Limited |
15.6 | % | Canada | ||
| Wabush Mines |
26.83 | % | Newfoundland, Canada | ||
| Wabush Lake Railway Company, Limited |
26.83 | % | Newfoundland, Canada | ||
| Twin Falls Power Corporation Limited |
6.866 | % | Canada | ||
| Cliffs Erie L.L.C. |
100 | % | Delaware, USA | ||
| Cliffs Technical Products LLC |
100 | % | Delaware, USA | ||
| Midway Ore Company Ltd. — Minerais Midway Ltee |
100 | % | Quebec, Canada | ||
| CLF PinnOak LLC |
100 | % | Delaware, USA | ||
| Cliffs North American Coal LLC (fka PinnOak Resources, LLC) |
100 | % | Delaware, USA | ||
| Pinnacle Land Company, LLC |
100 | % | Delaware, USA | ||
| Pinnacle Mining Company, LLC |
100 | % | Delaware, USA | ||
| Oak Grove Resources, LLC |
100 | % | Delaware, USA | ||
| Oak Grove Land Company, LLC |
100 | % | Delaware, USA | ||
| PinnOak Coal Sales, LLC |
100 | % | Delaware, USA | ||
| Beard Pinnacle, LLC |
100 | % | Oklahoma, USA | ||
| Cliffs Mining Services Company |
100 | % | Delaware, USA | ||
| Cliffs Minnesota Mining Company |
100 | % | Delaware, USA | ||
| United Taconite LLC |
70 | % | Delaware, USA | ||
| Cliffs Reduced Iron Corporation |
100 | % | Delaware, USA | ||
| Cliffs Reduced Iron Management Company |
100 | % | Delaware, USA | ||
| Cliffs and Associates Limited |
82.395 | % | Trinidad | ||
| CALipso Sales Company |
82.395 | % | Delaware, USA |
| Name |
Cliffs’ Effective Ownership |
Place of Incorporation | |||
| Cliffs Renewable Energies LLC |
100 | % | Delaware, USA | ||
| Renewafuel, LLC |
70 | % | Minnesota, USA | ||
| Cliffs Sales Company (fka Northshore Sales Company) |
100 | % | Ohio, USA | ||
| Northshore Mining Company |
100 | % | Delaware, USA | ||
| Silver Bay Power Company |
100 | % | Delaware, USA | ||
| IronUnits LLC |
100 | % | Delaware, USA | ||
| Michigan Iron Nugget LLC |
50 | % | Delaware, USA | ||
| Lake Superior & Ishpeming Railroad Company |
100 | % | Michigan, USA | ||
| Cliffs International Management Company LLC |
100 | % | Delaware, USA | ||
| Cleveland-Cliffs International Holding Company |
100 | % | Delaware, USA | ||
| Cliffs International Lux I S.à r.l. |
100 | % | Luxembourg | ||
| Cliffs International Mineraçâo Brasil Ltda. |
100 | % | Brazil | ||
| Cliffs International Lux II S.à r.l. |
100 | % | Luxembourg | ||
| Cliffs International Lux IV S.à r.l. |
100 | % | Luxembourg | ||
| Cliffs (Gibraltar) Mather I Limited |
100 | % | Gibraltar | ||
| Cliffs (US) Mather I LLC |
100 | % | Delaware, USA | ||
| Cliffs International Participações Brasil Ltda. |
100 | % | Brazil | ||
| Centennial Asset Participações Amapá S.A. |
100 | % | Brazil | ||
| MMX Amapá Mineração Ltda. |
30 | % | Brazil | ||
| MMX Logística do Amapá Ltda. |
30 | % | Brazil | ||
| Cliffs Asia-Pacific Holdings Pty Limited |
100 | % | WA Australia | ||
| Cliffs Asia-Pacific Pty Limited |
100 | % | WA Australia | ||
| Cliffs Australia Coal Pty Ltd |
100 | % | QLD Australia | ||
| Cliffs Australia Washplant Operations Pty Ltd |
100 | % | QLD Australia | ||
| Sonoma Coal Project |
8.333 | % | QLD Australia | ||
| Sonoma Mine Management Pty Ltd |
45 | % | QLD Australia | ||
| Portman Limited |
80.448 | % | SA Australia | ||
| Portman Mining Limited |
80.448 | % | NA Australia | ||
| Portman Coal Investments Pty Ltd |
80.448 | % | WA Australia | ||
| Portman Finance Pty Ltd |
80.448 | % | WA Australia | ||
| Pelsoil Ltd |
80.448 | % | Australia | ||
| Portman Investments Pty Ltd |
80.448 | % | QLD Australia | ||
| Portman Iron Ore Limited |
80.448 | % | NSW Australia | ||
| Koolyanobbing Iron Pty Ltd |
80.448 | % | WA Australia | ||
| Esperance Iron Limited |
80.448 | % | WA Australia | ||
| Cockatoo Island Project |
40.224 | % | SA Australia | ||
| Cockatoo Island Holdings Pty Ltd |
80.448 | % | NSW Australia | ||
| Portman Management Pty Ltd |
80.448 | % | NSW Australia | ||
| Cliffs Australia Holdings Pty Ltd |
100 | % | QLD Australia | ||
| Cliffs (Gilbraltar) Holdings Limited |
100 | % | Gibraltar | ||
| Cliffs (Gibraltar) Limited |
100 | % | Gibraltar | ||
| Cliffs (Gibraltar) Holdings Limited Luxembourg S.C.S. |
100 | % | Luxembourg | ||
| Cliffs International Luxembourg S.à r.l. |
100 | % | Luxembourg | ||
| Cliffs Netherlands B.V. |
100 | % | The Netherlands | ||
| Cliffs (Gibraltar) Mather II Limited |
100 | % | Gibraltar |