| TGTextron Gse - Premier | Marinette | WI | — | ◇ UNVERIFIED |
| TCThe Canam Steel Corporation | Lafayette | IN | — | ◇ UNVERIFIED |
| THThe Hustad CO - Central Ave | Minneapolis | MN | — | ◇ UNVERIFIED |
| TIThe Industrial CO (tic) Se | Savannah | GA | — | ◇ UNVERIFIED |
| TNThermo National Industries INC | South Plainfield | NJ | — | ◇ UNVERIFIED |
| TQThieman Quality Metal Fabrication, INC. | New Bremen | OH | — | ◇ UNVERIFIED |
| TWThompsons Welding and Machine Works | Philadelphia | MS | — | ◇ UNVERIFIED |
| TRTier Rack Corporation, Como Plant | Como | MS | — | ◇ UNVERIFIED |
| TCTimkensteel CORP - Faircrest Steel Plant | Canton | OH | — | ◇ UNVERIFIED |
| TSTipton Structural Fabrication INC | Tipton | IA | — | ◇ UNVERIFIED |
| TFTitan Fabrication | Owensboro | KY | — | ◇ UNVERIFIED |
| TSTitan Steel CORP | Kirkville | NY | — | ◇ UNVERIFIED |
| TFTopeka Foundry and Ironworks CO | Topeka | KS | — | ◇ UNVERIFIED |
| TSTower Support Services LLC | Mckenzie | TN | — | ◇ UNVERIFIED |
| TTTower Tech | Abilene | TX | — | ◇ UNVERIFIED |
| TITramco INC. | Wichita | KS | — | ◇ UNVERIFIED |
| TMTramont Manufacturing LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| TTrcm | Maysville | KY | — | ◇ UNVERIFIED |
| TITrinity Industries | Elizabethtown | KY | — | ◇ UNVERIFIED |
| TITrinity Industries INC Plt 23 | Denton | TX | — | ◇ UNVERIFIED |
| TITrinity Industries Plant 127 Stearns Airport Equip | Fort Worth | TX | — | ◇ UNVERIFIED |
| TRTrinity Railcar Plant 192 | Saginaw | TX | — | ◇ UNVERIFIED |
| TSTriple S CORP | Beckley | WV | — | ◇ UNVERIFIED |
| TITri-state Ironworks INC | Memphis | TN | — | ◇ UNVERIFIED |
| TTrostel | Mcallen | TX | — | ◇ UNVERIFIED |
 Truenorth Steel | Billings | MT | — | ◇ UNVERIFIED |
| TCTube City Ims | Norfolk | NE | — | ◇ UNVERIFIED |
| TIT&w Industries Services | Folkston | GA | — | ◇ UNVERIFIED |
| UMUmi Metalfab | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| USUnico Steel, INC. | City of Industry | CA | — | ◇ UNVERIFIED |
| UMUnion Metal - Canton | Canton | OH | — | ◇ UNVERIFIED |
| USUnited Steel Works, INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| URUnitrac Railroad Materials INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| UFUniversal Fabricating & Construction Ser | Columbus | OH | — | ◇ UNVERIFIED |
| UIUpper Iowa University - Peacock Arts & Athletics Center | Fayette | IA | — | ◇ UNVERIFIED |
| UDUrgent Design and Mfg INC | Lapeer | MI | — | ◇ UNVERIFIED |
| ULUscoe Louisville Repair Sta | Louisville | KY | — | ◇ UNVERIFIED |
| UDU.s. Defense National Stockpile Center Point Pleasant Depot | Point Pleasant | WV | — | ◇ UNVERIFIED |
| UMUS Machine INC | Fairmont | WV | — | ◇ UNVERIFIED |
| USUsp Structural Connectors | Montgomery | MN | — | ◇ UNVERIFIED |
| USUS Steel CORP Joliet Works | Joliet | IL | — | ◇ UNVERIFIED |
| USUS Steel - Gary Works | Chicago | IL | — | ◇ UNVERIFIED |
| USUS Steel Mon Valley Works Fairless Plt | Fairless Hills | PA | — | ◇ UNVERIFIED |
| VWValley West Welding CO INC | Waverly | TN | — | ◇ UNVERIFIED |
| VIValmont Industries INC | Tulsa | OK | — | ◇ UNVERIFIED |
| VNValmont Newmark | Hazleton | PA | — | ◇ UNVERIFIED |
| VFValmont-newmark Fab Shop | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| VValmont/texas | Brenham | TX | — | ◇ UNVERIFIED |
| VSVandellen Steel INC | Dutton | MI | — | ◇ UNVERIFIED |
| VFVan Fab INC | Union Hill | IL | — | ◇ UNVERIFIED |
