| TETrend Electronics INC | Gallatin | TN | — | ◇ UNVERIFIED |
| TBTriangle Brass Manufacturing CO INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| TCTrinity Containers LLC / Plt 27 | Tulsa | OK | — | ◇ UNVERIFIED |
| TITrinity Inds INC Plant 04 | Rocky Mount | NC | — | ◇ 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 |
| TITrinity Industries Plant 17 | Longview | TX | — | ◇ UNVERIFIED |
| TRTrinity Railcar Plant 192 | Saginaw | TX | — | ◇ UNVERIFIED |
| TTTrinity Tank Car INC Plt 110 | Longview | TX | — | ◇ UNVERIFIED |
| TTTrinity Tank Car INC Plt 194 | Longview | TX | — | ◇ UNVERIFIED |
| TSTriple S CORP | Beckley | WV | — | ◇ UNVERIFIED |
| TITri-state Ironworks INC | Memphis | TN | — | ◇ UNVERIFIED |
| TTrostel | Mcallen | TX | — | ◇ UNVERIFIED |
| TIT&w Industries Services | Folkston | GA | — | ◇ UNVERIFIED |
| UMUmi Metalfab | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| USUnico Steel, INC. | City of Industry | CA | — | ◇ UNVERIFIED |
| UIUnimast Incorporated | Boonton | NJ | — | ◇ UNVERIFIED |
| UMUnion Metal - Canton | Canton | OH | — | ◇ UNVERIFIED |
| USUnited Steel Works, INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| UFUniversal Fabricating & Construction Ser | Columbus | OH | — | ◇ UNVERIFIED |
| UUnknown | Topeka | KS | — | ◇ 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 |
| UOUtility Optimization Group LLC | Pascagoula | MS | — | ◇ 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 |
 Van Linda Iron Works INC | Lake Worth | FL | — | ◇ UNVERIFIED |
| VMVaughn Manufacturing Corporation | Salisbury | MA | — | ◇ UNVERIFIED |
| VIVega Iron Works | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| VWVenture Welding (howe) | Howe | IN | — | ◇ UNVERIFIED |
| VEVernon E Faulconer INC - Ambrose #1 | Ruston | LA | — | ◇ UNVERIFIED |
| VMVi Manufacturing INC | Webster | NY | — | ◇ UNVERIFIED |
| VCVirginia Carolina Steel Incorporated | Norfolk | VA | — | ◇ UNVERIFIED |
| VSVista Steel | Ventura | CA | — | ◇ UNVERIFIED |
| VSVoight & Schweitzer | Muskogee | OK | — | ◇ UNVERIFIED |
| VLVstructural LLC | Fort Worth | TX | — | ◇ UNVERIFIED |
| WWWagnerplate Works West | Paramount | CA | — | ◇ UNVERIFIED |
| WFWalco Fabricating INC | Pottsville | PA | — | ◇ UNVERIFIED |
| WMWalker Metal Works LLC | Abingdon | VA | — | ◇ UNVERIFIED |
| WSWalker Station Equipment Company LLC | Tavares | FL | — | ◇ UNVERIFIED |
