| UFUnique Fabrications, INC. | Shippenville | PA | — | ◇ UNVERIFIED |
| UIUnitech Industries, INC. | Palmerton | PA | — | ◇ UNVERIFIED |
| UOUnitech Ornamental Metal Works | Hialeah | FL | — | ◇ UNVERIFIED |
| UDUnited Duralume Products, INC. | Anaheim | CA | — | ◇ UNVERIFIED |
| ULUnited Lifttrucks | Huntington Park | CA | — | ◇ UNVERIFIED |
| UMUnited Machine Works | Houston | TX | — | ◇ UNVERIFIED |
| UMUnited Metal Fabrication INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| UMUnited Metals Construction | Philadelphia | PA | — | ◇ UNVERIFIED |
| UMUnited Milwaukee Scrap LLC | Burnsville | MN | — | ◇ UNVERIFIED |
| UMUnited Milwaukee Scrap of Minnesota | Burnsville | MN | — | ◇ UNVERIFIED |
| USUnited Services INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| USUnited Sheet Metal Works and Steel Fabricators, INC. | Plant City | FL | — | ◇ UNVERIFIED |
| USUnited Steel Works Inc | Moody | AL | — | ◇ UNVERIFIED |
| USUnited Structure Solution, Inc. | College Point | NY | — | ◇ UNVERIFIED |
| UTUnited Tooler of Illinois | Loves Park | IL | — | ◇ UNVERIFIED |
| UFUnivacco Foils Corporation | Cerritos | CA | — | ◇ UNVERIFIED |
| UCUniversal Carbide | Santa Cruz | CA | — | ◇ UNVERIFIED |
| UFUniversal Fabricating and Construction Services | Groveport | OH | — | ◇ UNVERIFIED |
| UFUniversal Fabricators, LLC | Bay City | TX | — | ◇ UNVERIFIED |
| UFUniversal Fireproof Door Co., Inc. | Brentwood | NY | — | ◇ UNVERIFIED |
| UIUniversal Industries LLC | Tomahawk | WI | — | ◇ UNVERIFIED |
| UMUniversal Machine Shop LLC | Mayfield | KY | — | ◇ UNVERIFIED |
| UMUniversal Manufacturing & Design, LLC | Greer | SC | — | ◇ UNVERIFIED |
| UMUniversal Marine & Industrial Services | Mobile | AL | — | ◇ UNVERIFIED |
| UMUniversal Molding Extrusion CO | Downey | CA | — | ◇ UNVERIFIED |
| USUniversal Stainless INC | Clear Lake | MN | — | ◇ UNVERIFIED |
| USUniversal Steel Services, INC. | San Bernardino | CA | — | ◇ UNVERIFIED |
| UTUniversal Tool Inc. | Troy | MI | — | ◇ UNVERIFIED |
| UTUniversal Truck Equipments LLC | Medley | FL | — | ◇ UNVERIFIED |
| UWUniversal Welding & Fabrication INC. | North Pole | AK | — | ◇ UNVERIFIED |
| UIUnlimited Industrial Services, LLC | Belle Glade | FL | — | ◇ UNVERIFIED |
| UEUpper Edge Solutions, LLC | Holland | NY | — | ◇ UNVERIFIED |
| UTUSA Today National Rack Center | Murfreesboro | TN | — | ◇ UNVERIFIED |
| UDU.s. Department of the Treasury - U.s. Mint | San Francisco | CA | — | ◇ UNVERIFIED |
| UUsdol | Lubbock | TX | — | ◇ UNVERIFIED |
| UWUsdol-osha-atlanta West | Mableton | GA | — | ◇ UNVERIFIED |
| UOUsdol Osha - Cincinnati Area Office | Xenia | OH | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Sterling | IL | — | ◇ UNVERIFIED |
| UOUsdol Osha - St. Louis Area Office | Maryland Heights | MO | — | ◇ UNVERIFIED |
| UNUS Naval Weapons Station Yorktown - Cheatham Annex | Yorktown | VA | — | ◇ UNVERIFIED |
| ULUsnr, LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| UMUsr Metals, INC. | — | PA | — | ◇ UNVERIFIED |
| UGUssc Group INC | Exton | PA | — | ◇ UNVERIFIED |
| UHUssc Holding Corp/exton | Exton | PA | — | ◇ UNVERIFIED |
| USU.S. Screen Co. | Wellington | OH | — | ◇ UNVERIFIED |
| UWUS Web Converting Machinery CORP | Paxinos | PA | — | ◇ UNVERIFIED |
| UBUtah Barricade Company | Boise | ID | — | ◇ UNVERIFIED |
| UAUtc Aerospace Systems | Colorado Springs | CO | — | ◇ UNVERIFIED |
| VMVacom Montana INC | Lewistown | MT | — | ◇ UNVERIFIED |
| VMVahterus Manufacturing INC. | Westmoreland City | PA | — | ◇ UNVERIFIED |
