| TBThe Blanchester Foundry CO | Blanchester | OH | — | ◇ UNVERIFIED |
| TCThe Cooksey CORP / Shear-loc Prod | Laguna Hills | CA | — | ◇ UNVERIFIED |
| TFThe Foundry INC | Mead | WA | — | ◇ UNVERIFIED |
| TGThe General Casting Company - Toledo Street | Delaware | OH | — | ◇ UNVERIFIED |
| TGThe Glass Hand, INC. | Cleves | OH | — | ◇ UNVERIFIED |
| TFTherma Foam | Fort Worth | TX | — | ◇ UNVERIFIED |
| TPThermo Plastics Corporation | Fort Worth | TX | — | ◇ UNVERIFIED |
| TSThe Shredder Company | Canutillo | TX | — | ◇ UNVERIFIED |
 The Winsford Corporation Dba Forbes Industries | Ontario | CA | — | ◇ UNVERIFIED |
| TPThreaded Products CO | Richmond | MI | — | ◇ UNVERIFIED |
| TPThreaded Products CO | Richmond | MI | — | ◇ UNVERIFIED |
| TBThunder Bay Foundry | Alpena | MI | — | ◇ UNVERIFIED |
| TMTiffany Marble | Lees Summit | MO | — | ◇ UNVERIFIED |
| TSTitanium Specialties | Taft | CA | — | ◇ UNVERIFIED |
| TFTomahawk Foundary, INC | Rice Lake | WI | — | ◇ UNVERIFIED |
| TPTompkins Point Industrial Park LLC | Newark | NJ | — | ◇ UNVERIFIED |
| TKTool King INC | Wheeling | IL | — | ◇ UNVERIFIED |
| TDTop Die Casting CO | Marengo | IL | — | ◇ UNVERIFIED |
 Travis Pattern Foundry | Spokane Valley | WA | — | ◇ UNVERIFIED |
| TITree Island Steel Dba Tree Island Wire USA INC | San Bernardino | CA | — | ◇ UNVERIFIED |
| TSTrelleborg Sealing Solutions El Segundo INC | El Segundo | CA | — | ◇ UNVERIFIED |
| TITrexel International, INC. | Woburn | MA | — | ◇ UNVERIFIED |
| TPTri-mack Plastic Mfg. CORP | Bristol | RI | — | ◇ UNVERIFIED |
| TTTriseal, Tekni-plex CO. | Flemington | NJ | — | ◇ UNVERIFIED |
| TSTri Star Molding INC | Marcellus | MI | — | ◇ UNVERIFIED |
| TITri-tube INC | Abingdon | VA | — | ◇ UNVERIFIED |
| TFTroy Fiberglass Plant | Troy | TX | — | ◇ UNVERIFIED |
| TFTroy Foundry (screening Plant) | Adger | AL | — | ◇ UNVERIFIED |
| TPTru-form Plastics INC | Gardena | CA | — | ◇ UNVERIFIED |
| TMTuflex Manufacturing CO. | Pompano Beach | FL | — | ◇ UNVERIFIED |
| TRTulip Richardson Manufacturing Incorporated | Columbus | IN | — | ◇ UNVERIFIED |
| TFTung Fei Plastic INC | Hayward | CA | — | ◇ UNVERIFIED |
| TTupperware | Hemingway | SC | — | ◇ UNVERIFIED |
| TPTyler Pipe CO | Tyler | TX | — | ◇ UNVERIFIED |
| TNTyvak Nano Satellite Systems | Irvine | CA | — | ◇ UNVERIFIED |
| UEUnion Electric Akers | Avonmore | PA | — | ◇ UNVERIFIED |
| USUnited States Pipe and Foundry Company Dba U.s. Pi | Union City | CA | — | ◇ UNVERIFIED |
| USUnited States Pipe & Foundry Company LLC | Naperville | IL | — | ◇ UNVERIFIED |
 Universal Plastics INC. | Chico | CA | — | ◇ UNVERIFIED |
| UPUniversal Precast Concrete, INC. | Redding | CA | — | ◇ UNVERIFIED |
| UDU.s. Department of Labor-osha | Red Bud | IL | — | ◇ UNVERIFIED |
| UDU.s. Dol Osha | Richland | PA | — | ◇ UNVERIFIED |
| UDUS Dol Osha Fort Lauderdale Ao | Medley | FL | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Phenix City | AL | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Enterprise | AL | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Galena | IL | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | South Beloit | IL | — | ◇ UNVERIFIED |
| USU S Fence INC (plastics Div ) | Morristown | TN | — | ◇ UNVERIFIED |
| USU S Foundry & Manufacturing | Tampa | FL | — | ◇ UNVERIFIED |
| UCUsg Ceilings Plus LLC | Commerce | CA | — | ◇ UNVERIFIED |
