Exhibit 21
UNITED STATES STEEL CORPORATION
SUBSIDIARIES AND JOINT VENTURES
as of December 31, 2008
| Company Name |
||
| Adela Investment Company, S.A. | ||
| Chisholm Coal LLC | ||
| Chrome Deposit Corporation | ||
| Compagnie de Gestion de Mifergui- Nimba,LTEE | ||
| Cygnus Mines Limited | ||
| Delaware USS Corporation | ||
| Double Eagle Steel Coating Company | ||
| Double G Coatings, Inc. | ||
| Double G Coatings Company, L.P. | ||
| Essex Minerals Company | ||
| Feralloy Processing Company | ||
| GCW/USS Energy, LLC | ||
| Grant Assurance Corporation | ||
| Kanawha Coal LLC | ||
| Lakeside Land, LLC | ||
| La Pointe Iron Company | ||
| New Deal Development, Inc. | ||
| Oilfield Technologies, Inc. | ||
| Orinoco Mining Company | ||
| PITCAL, Inc. | ||
| USS-POSCO Industries | ||
| Perdido Land Development, Inc. | ||
| Pitcal Pipe, LLC | ||
| United Spiral Pipe, LLC | ||
| Preserve Village Developers, LLC | ||
| Smart Screen Systems, Inc. | ||
| Societe Des mines de Fer de Guinee Pour L’Exploitation Des Monts Nimba | ||
| Steel Health Resources, LLC | ||
| Stelco Holding Company | ||
| Ontario Coal Company | ||
| Ontario Eveleth Company | ||
| Ontario Hibbing Company | ||
| Hibbing Development Company | ||
| Hibbing Taconite Company | ||
| Stelco Coal Company | ||
UNITED STATES STEEL CORPORATION
SUBSIDIARIES AND JOINT VENTURES
as of December 31, 2008 (continued)
| Company Name |
||
| Stelco Erie Corporation | ||
| Ontario Tilden Company | ||
| Tilden Mining Company, L.C. | ||
| Marquette Range Coal Service Company | ||
| Mittal Steel USA - Ontario Iron Inc. (prev. Ontario Iron Co.) | ||
| Beckley Coal Co. | ||
| Mathies Coal Co. (PA) | ||
| Straightline, Inc. | ||
| Straightline Source, Inc. | ||
| Swan Point Yacht & Country Club, LLC | ||
| SPDC Hotel, LLC | ||
| Swan Point Development Company, Inc. | ||
| Brookfield Swan Point, LLC | ||
| The Steel Company of Canada, Limited | ||
| Timber Wolf Land, LLC | ||
| Transtar, Inc. | ||
| Fairfield Southern Company, Inc. | ||
| Delray Connecting Railroad Company | ||
| Elgin, Joliet and Eastern Railway Company | ||
| EJ&E West Company (See Note 1) | ||
| Tracks Traffic and Management Services, Inc. | ||
| Texas & Northern Railway Company | ||
| Lake Terminal Railroad Company, The | ||
| McKeesport Connecting Railroad Company | ||
| Union Railroad Company | ||
| Birmingham Southern Railroad Company | ||
| Warrior & Gulf Navigation LLC | ||
| Mobile River Terminal Company | ||
| Sisco Stevedoring, LLC | ||
| U. S. Steel Canada Inc. | ||
| HLE Mining GP Inc. | ||
| HLE Mining Limited Partnership | ||
| Wabush Mines (Quebec) | ||
| Arnaud Railway Company (Quebec) | ||
| Wabush Lake Railway Company Ltd. (Alta) | ||
| Knoll Lake Minerals Limited | ||
2
UNITED STATES STEEL CORPORATION
SUBSIDIARIES AND JOINT VENTURES
as of December 31, 2008 (continued)
| Company Name |
||
| Northern Land Company Limited | ||
| Twin Falls Power Corporation Limited | ||
| The Stelco Plate Company Ltd. | ||
| 742784 Ontario Inc. | ||
| Baycoat Limited | ||
| Baycoat Limited Partnership (Baycoat L.P.) | ||
| Z-Line Company | ||
| D.C. Chrome Limited | ||
| 4501039 Canada Inc. (prev. Lake Erie Slab Company Inc.)(See Note 2) | ||
| U. S. Steel China, LLC | ||
| U. S. Steel Holdings, Inc. | ||
| U. S. Steel Holdings II, LLC | ||
| Worldwide Steel C.V. | ||
| U. S. Steel Europe, B.V. | ||
| U. S. Steel Global Holdings I, B.V. | ||
| U. S. Steel Košice, s.r.o. (USSK) | ||
| Obal-Servis, a.s. Košice | ||
| Stabilita d.d.s., a.s. | ||
| U. S. Steel Kosice – Austria GmbH | ||
| Hutnictvi železa, a.s. | ||
| U. S. Steel Košice – Labortest, s.r.o. | ||
| U. S. Steel Services s.r.o. | ||
| U. S. Seel Kosice – Belgium S.A. | ||
| U. S. Steel Košice - Bohemia a.s. | ||
| U. S. Steel Kosice - France S.A. | ||
| U. S. Steel Košice - SBS, s.r.o. | ||
| U. S. Steel Kosice - Germany GmbH | ||
| U. S. Steel Kosice (UK) LIMITED | ||
| Refrako, s.r.o. | ||
| Reliningserv, s.r.o. | ||
| Vulkmont a.s. Košice | ||
| U. S. Steel Canada Limited Partnership | ||
| U. S. Steel Global Holdings II, B.V. | ||
| U. S. Steel Enterprises BV | ||
| U. S. Steel Serbia, BV | ||
| U. S. Steel Serbia, d.o.o. | ||
3
UNITED STATES STEEL CORPORATION
SUBSIDIARIES AND JOINT VENTURES
as of December 31, 2008 (continued)
| Company Name |
||
| Serbian Roll Service Company d.o.o. (short name: SRSC d.o.o. Smederevo) | ||
| U. S. Steel Holdings IV, Inc. | ||
| U. S. Steel International of Canada, LTD. | ||
| U. S. Steel Mining Company, LLC | ||
| U. S. Steel Receivables LLC | ||
| U. S. Steel Timber Company, LLC | ||
| U. S. Steel Tubular Products, Inc. | ||
| Star Capital Funding, LLC (prev. Star Capital Funding, Inc.) |
||
| Zinklahoma, Inc. | ||
| Star International Holdings Ltd. | ||
| Star China Ltd. | ||
| Star TC Holdings, LLC | ||
| Lone Star Technologies China, LLC | ||
| Star Brazil US, LLC 2 | ||
| Star Brazil US, LLC1 | ||
| Lone Star Brazil Holdings 1 Ltda. | ||
| Lone Star Brazil Holdings 2 Ltda. | ||
| Apolo Tubulars S.A. | ||
| Lone Star Steel Holdings, Inc. | ||
| Fintube (Thailand) Limited | ||
| Fintube Technologies, Inc. | ||
| Fintube Canada, Inc. | ||
| Aletas Y Birlos SA, De C.V. | ||
| Aletas Y Birlos Mexicana SA, De C.V. | ||
| UEC Technologies, LLC | ||
| Met-Chem Canada, Inc. | ||
| Met-Chem, Inc. | ||
| UEC Sail Information Technology, LTD. | ||
| USX Engineers and Consultants | ||
| United States Steel Credit Corporation | ||
| United States Steel Export Company de Mexico, S.R.L. de C.V. | ||
| Acero Prime, S.R.L. de CV | ||
| Acero Prime Servicios, S.R.L. de CV | ||
| United States Steel International, Inc. | ||
4
UNITED STATES STEEL CORPORATION
SUBSIDIARIES AND JOINT VENTURES
as of December 31, 2008 (continued)
| Company Name |
||
| United States Steel International de Mexico, S.R.L. de C. V. | ||
| USS Galvanizing, Inc. | ||
| PRO-TEC Coating Company | ||
| PRO-TEC Coating Company, Inc. | ||
| USS International Services, LLC | ||
| USS Lakeside, LLC | ||
| Chicago Lakeside Development, LLC | ||
| USS Mine Management, Inc. (owns 10% U. S. Steel Mining, LLC) |
||
| USS Oilwell Supply Co., LTD. | ||
| USS Oilwell Tubular, Inc. | ||
| USS Portfolio Delaware, Inc. | ||
| USS Tubular Processing, Inc. | ||
| USS WSP, LLC | ||
| Worthington Specialty Processing | ||
| ProCoil Company, LLC | ||
| Worthington Taylor, LLC | ||
| USX International Sales Company, Inc. | ||
| USX Participacoes LTDA. | ||
| Merinds Mineracao | ||
| Mineracao Carajas, LTDA. | ||
| Mineracao Maraba, LTDA. | ||
Note:
| (1) | EJ&E West Company was sold on January 31, 2009 |
| (2) | As of January 1, 2009, 4501039 Canada Inc. no longer exists. It was amalgamated with U. S. Steel Canada Inc on January 1, 2009. |
February 18, 2009
5