| TRTxi-winnsboro Ready Mix | Winnsboro | TX | — | ◇ UNVERIFIED |
| TBTxm - Bastrop Ready Mix | Bastrop | TX | — | ◇ UNVERIFIED |
| TGTxm - Green Ready Mix | Austin | TX | — | ◇ UNVERIFIED |
| TJTxm - Jarrell Ready Mix | Jarrell | TX | — | ◇ UNVERIFIED |
| TKTxm - Kirby Ready Mix | San Antonio | TX | — | ◇ UNVERIFIED |
| TLTxm - Lago Vista Ready Mix | Lago Vista | TX | — | ◇ UNVERIFIED |
| TLTxm - Leander Ready Mix | Leander | TX | — | ◇ UNVERIFIED |
| TSTxm - San Marcos Ready Mix | San Marcos | TX | — | ◇ UNVERIFIED |
| TTTxm - Taylor Ready Mix | Taylor | TX | — | ◇ UNVERIFIED |
| TTTxm - Tesla Rd Ready Mix | Austin | TX | — | ◇ UNVERIFIED |
| TWTxm - Westside Ready Mix | San Antonio | TX | — | ◇ UNVERIFIED |
| URUmatilla Ready Mix | Pendleton | OR | — | ◇ UNVERIFIED |
| URUmatilla Ready Mix Hermiston Plant | Hermiston | OR | — | ◇ UNVERIFIED |
| UCUnicon Concrete Incorporated | High Point | NC | — | ◇ UNVERIFIED |
| UCUnicon Concrete Incorporated Plant Number 6 | Durham | NC | — | ◇ UNVERIFIED |
| UCUnion Concrete Products | Maxwelton | WV | — | ◇ UNVERIFIED |
| UCUniontown Concrete Plt | Hopwood | PA | — | ◇ UNVERIFIED |
| UBUnited Block CO. | Chicora | PA | — | ◇ UNVERIFIED |
| UCUnited Concrete CORP | Waukegan | IL | — | ◇ UNVERIFIED |
| UCUnited Contractors Midwest | Chapin | IL | — | ◇ UNVERIFIED |
| UMUnited Materials Company-st Louis | Saint Louis | MO | — | ◇ UNVERIFIED |
| UMUnited Metro Materials | Phoenix | AZ | — | ◇ UNVERIFIED |
| UMUnited Metro Materials (dba Rinker Materials) El Mirage 106 | El Mirage | AZ | — | ◇ UNVERIFIED |
| URUnited Ready Mix INC | Peoria | IL | — | ◇ UNVERIFIED |
| URUnited Ready Mix INC | Pekin | IL | — | ◇ UNVERIFIED |
| UUnknown | Miami | FL | — | ◇ UNVERIFIED |
| URUpchurch Ready Mix Concrete CO | East Saint Louis | IL | — | ◇ UNVERIFIED |
| URUpchurch Ready Mix Concrete CO INC | Belleville | IL | — | ◇ UNVERIFIED |
| UCUpper Cape Ready Mix | East Falmouth | MA | — | ◇ UNVERIFIED |
| UIU-rent INC. | Saticoy | CA | — | ◇ UNVERIFIED |
| UIU-rent INC. | Camarillo | CA | — | ◇ UNVERIFIED |
| UNUs301 Nice-middleton Bridge Replacement Project | Newburg | MD | — | ◇ UNVERIFIED |
| UEUs69 Express 135th Loop Ramp | Overland Park | KS | — | ◇ UNVERIFIED |
| UEUs69 Express Bvpw Batch Plant | Overland Park | KS | — | ◇ UNVERIFIED |
| UNUsace New River Chamber Batch Concrete Plt | Monaca | PA | — | ◇ UNVERIFIED |
| UCUSA Concrete LLC | La Grande | OR | — | ◇ UNVERIFIED |
| UFUsc - Ferrara Brothers LLC - Chelsea Road | Staten Island | NY | — | ◇ UNVERIFIED |
| UKUsc - Kings LLC - Inwood | Inwood | NY | — | ◇ UNVERIFIED |
| UKUsc - Kings LLC - on Time | Flushing | NY | — | ◇ UNVERIFIED |
| UCU.s. Concrete Company/superior Concrete Materials | Washington | DC | — | ◇ UNVERIFIED |
| UCU.s. Concrete, INC. | Staten Island | NY | — | ◇ UNVERIFIED |
| UCU.s. Concrete, INC. | Staten Island | NY | — | ◇ UNVERIFIED |
| UCUS Concrete On-site INC | Camp Grove | IL | — | ◇ UNVERIFIED |
| UDU.s. Dol-osha Corpus Christi Area Office | San Juan | TX | — | ◇ UNVERIFIED |
| UOUsdol Osha - Ft. Lauderdale Ao | Miami | FL | — | ◇ UNVERIFIED |
| UOUsdol Osha- Hasbrouck Heights | Lyndhurst | NJ | — | ◇ UNVERIFIED |
| UDU.s. Dol-osha Houston South Area Office | Galveston | TX | — | ◇ UNVERIFIED |
| UOUsdol Osha - Tampa Ao | Orlando | FL | — | ◇ UNVERIFIED |
| UCUstone Cement Products & Solution LLC | Medley | FL | — | ◇ UNVERIFIED |
| UTUtica Transit Mix and Supply | Sterling Heights | MI | — | ◇ UNVERIFIED |
| USUtilities Structures | Fort Myers | FL | — | ◇ UNVERIFIED |
| VDValco Div-3 | Lamar | CO | — | ◇ UNVERIFIED |
| VIValco INC | Canon City | CO | — | ◇ UNVERIFIED |
| VIValco INC | Rocky Ford | CO | — | ◇ UNVERIFIED |
| VIValco INC | Rocky Ford 2.0 Mi. E of | CO | — | ◇ UNVERIFIED |
| VIValco INC | Rocky Ford | CO | — | ◇ UNVERIFIED |
| VIValco INC | Rocky Ford | CO | — | ◇ UNVERIFIED |
| VIValco INC | Gunnison County | CO | — | ◇ UNVERIFIED |
| VIValco, INC. (id #6790) | Otero County | CO | — | ◇ UNVERIFIED |
| VIValco INC Lamar Division | Las Animas | CO | — | ◇ UNVERIFIED |
| VBValley Block Loveland Facility | Loveland | CO | — | ◇ UNVERIFIED |
| VBValley Brook Concrete & Supply, INC. | Leon | WV | — | ◇ UNVERIFIED |
| VCValley Concrete INC | Artesia | NM | — | ◇ UNVERIFIED |
| VCValley Construction CO | Milan | IL | — | ◇ UNVERIFIED |
| VRValley Ready Mix, INC. | Idaho Falls | ID | — | ◇ UNVERIFIED |
| VNValmont Newmark INC | Bartow | FL | — | ◇ UNVERIFIED |
| VCVance Concrete Plant | Culpeper | VA | — | ◇ UNVERIFIED |
| VCVan Cleve Concrete Products INC | Exeter | CA | — | ◇ UNVERIFIED |
| VCVanDerVart Concrete Products, LLC | Sheboygan | WI | — | ◇ UNVERIFIED |
| VEVan Eaton Ready Mix - Cemco-305 (high Banks Wind Farm - North) | Munden | KS | — | ◇ UNVERIFIED |
| VEVan Eaton Ready Mix - Cemco-345 (high Banks Wind Farm - South) | Cuba | KS | — | ◇ UNVERIFIED |
| VEVan Eaton Ready Mix (portable) | Portable | KS | — | ◇ UNVERIFIED |
| VEVan Eaton Ready Mix / Red Dirt Wind Project Mobile Batch Pla | Dover | OK | — | ◇ UNVERIFIED |
| VMVans Material CO INC | Midlothian | IL | — | ◇ UNVERIFIED |
| VSVan Smith Block Plant | Summerville | SC | — | ◇ UNVERIFIED |
| VSVan Smith Concrete:#2 | Charleston | SC | — | ◇ UNVERIFIED |
| VSVan Smith Concrete:#3 | Mount Pleasant | SC | — | ◇ UNVERIFIED |
| VSVan Smith Concrete:#5 | Goose Creek | SC | — | ◇ UNVERIFIED |
| VSVan Smith Concrete CO Jedburg Plant | Summerville | SC | — | ◇ UNVERIFIED |
| VSVan Smith Concrete CO Plant #2 | Charleston | SC | — | ◇ UNVERIFIED |
| VSVan Smith Concrete CO Plant #5 | Goose Creek | SC | — | ◇ UNVERIFIED |
| VTVan Trust Portable | Roebuck | SC | — | ◇ UNVERIFIED |
| VBVarney Bros Sand & Gravel | Medfield | MA | — | ◇ UNVERIFIED |
| VBVarney Brothers Sand & Gravel INC | Bellingham | MA | — | ◇ UNVERIFIED |
| VCVarra Companies INC | Colorado | CO | — | ◇ UNVERIFIED |
| VCVarra Companies INC. - Batch Plt #5 | Erie | CO | — | ◇ UNVERIFIED |
| VCVarra Companies INC. - Batch Plt #5 | Greeley | CO | — | ◇ UNVERIFIED |
| VCVarra Companies INC Ft Lupton Plant 2 | Fort Lupton | CO | — | ◇ UNVERIFIED |
| VSVashon Sand and Gravel INC | Vashon | WA | — | ◇ UNVERIFIED |
| VRVaughn Ready Mix | Bentonville | AR | — | ◇ UNVERIFIED |
| VRVaughn Redi Mix | Benton | AR | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Building Materials LLC | Aurora | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Building Materials LLC Yard 1007 | Chicago | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Building Materials LLC Yard 1014 | Addison | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Building Materials LLC Yard 1032 | Chicago | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Building Materials LLC Yard 1140 | Blue Island | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Illinois INC Yard 1134 | Romeoville | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC | Lemont | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC | Peoria | IL | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC | Manteno | IL | — | ◇ UNVERIFIED |