| UCUnion Carbide Corporation | Woodbine | GA | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Dow Chemical CO | Institute | WV | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Ucar Emulsion Systems | Garland | TX | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Ucc Technology Park Operations | South Charleston | WV | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Tucker Latex Plant | Tucker | GA | — | ◇ UNVERIFIED |
| UPUnipro Paint Mfg | Denver | CO | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | — | ◇ UNVERIFIED |
| UCUniroyal Chemical Company INC. | Painesville | OH | — | ◇ UNVERIFIED |
| UBUnited Biochemicals LLC | Sanborn | NY | — | ◇ UNVERIFIED |
| UCUnited Coatings Manufacturing CO | Green Acres | WA | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Lab/dunmore | Scranton | PA | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Laboratories | Jackson | MS | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Laboratories | Jacksonville | IL | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Labs | Dunmore | PA | — | ◇ UNVERIFIED |
| UIUnited Industrial Services of Virginia | Rich Creek | VA | — | ◇ UNVERIFIED |
| UOUnited Organics CORP | Williamston | NC | — | ◇ UNVERIFIED |
| UPUnited Property Services Dba Haul4me.com | Camarillo | CA | — | ◇ UNVERIFIED |
| UPUnited Property Services INC | Camarillo | CA | — | ◇ UNVERIFIED |
| URUnited Resins INC | Pittsgrove Township | NJ | — | ◇ UNVERIFIED |
| UUnivar | Martinsville | VA | — | ◇ UNVERIFIED |
| USUnivar Solutions Usa, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| UBUniversal Bioenergy of North America INC | Nettleton | MS | — | ◇ UNVERIFIED |
| UCUniversal Chemicals & Coatings INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| UEUniversal Environmental Services, LLC | Peachtree City | GA | — | ◇ UNVERIFIED |
| UPUniversal Paint CORP | Industry | CA | — | ◇ UNVERIFIED |
 Universal Plastics - Middlefield (0228000127) | Middlefield | OH | — | ◇ UNVERIFIED |
| USUniversal Systems USA INC. | Manchester | NH | — | ◇ UNVERIFIED |
| UOUniversity of Portland | Portland | OR | — | ◇ UNVERIFIED |
| UPUpcoming Productions INC. Ufp25 | Glendale | CA | — | ◇ UNVERIFIED |
| UUUpol - US Corporation | Easton | PA | — | ◇ UNVERIFIED |
| UIUraseal INC | Dover | NH | — | ◇ UNVERIFIED |
| UCUremet CORP | Garden Grove | CA | — | ◇ UNVERIFIED |
| UCUremet CORP | Santa Ana | CA | — | ◇ UNVERIFIED |
| UHUrethane Holdings, LLC | Alpharetta | GA | — | ◇ UNVERIFIED |
| UEUSA Environment | Pasadena | TX | — | ◇ UNVERIFIED |
| USU. S Amines LLC | Axis | AL | — | ◇ UNVERIFIED |
| URUSA Resources Technology LLC | Elizabeth | NJ | — | ◇ UNVERIFIED |
| UBU.s. Biofuels INC | Rome | GA | — | ◇ UNVERIFIED |
| UBUS Biofuels INC. | Rome | GA | — | ◇ UNVERIFIED |
| UCUS Coating | Lakeville | MN | — | ◇ UNVERIFIED |
| UDUS Doe Kansas City Plant | Kansas City | MO | — | ◇ UNVERIFIED |
| UOUsdol Osha - Atlanta West Ao | Atlanta | GA | — | ◇ UNVERIFIED |
| UOUsdol Osha - Atlanta West Ao | Marietta | GA | — | ◇ UNVERIFIED |
| UOUsdol Osha Aurora Office | Elgin | IL | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Saint Charles | IL | — | ◇ UNVERIFIED |
| USU S Energy Rng Deer Run | Kewaunee | WI | — | ◇ UNVERIFIED |
| USU S Energy Rng Facility Clover Hill | Ashford | WI | — | ◇ UNVERIFIED |
| UEU.s. Energy Rng Facility Dallmann | Brillion | WI | — | ◇ UNVERIFIED |
| UGU.s. Gain Rng Facility S&s | Sturgeon Bay | WI | — | ◇ UNVERIFIED |
