| RMReady Mix USA - Opelika Facility | Opelika | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Panama City Facility | Panama City | FL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Port St Joe Plant | Port Saint Joe | FL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Racetrack Road Plant | Fort Walton Beach | FL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Skanska | Pensacola | FL | — | ◇ UNVERIFIED |
| RMReady Mix Usa-tarrant Facility | Birmingham | AL | — | ◇ UNVERIFIED |
| RMReady Mix USA - Tyndall Afb | Tyndall Afb | FL | — | ◇ UNVERIFIED |
| RRRealco Recycling CO. INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| RCReames Concrete Co., INC. | Valdosta | GA | — | ◇ UNVERIFIED |
| RCReames Concrete Company | Valdosta | GA | — | ◇ UNVERIFIED |
| RCRec - Cannon Falls | Cannon Falls | MN | — | ◇ UNVERIFIED |
| RBRecology Blossom Valley Organics - South | Lamont | CA | — | ◇ UNVERIFIED |
| RMRecrete Materials-port. Conc. Plnt | Aurora Area | CO | — | ◇ UNVERIFIED |
| RARecycled Aggregate Materials Company INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| RBRed Bird Pre-mix Company-bridgeton | Bridgeton | MO | — | ◇ UNVERIFIED |
| RIRedco Ii | North Hollywood | CA | — | ◇ UNVERIFIED |
| RCRedding Concrete | Shasta Lake | CA | — | ◇ UNVERIFIED |
| RCRedding Concrete | Redding | CA | — | ◇ UNVERIFIED |
| RCRed-e-mix-granite City | Granite City | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | Mascoutah | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | Jerseyville | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | Litchfield | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | Columbia | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | Highland | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | Troy | IL | — | ◇ UNVERIFIED |
| RERed E Mix LLC | O'fallon | IL | — | ◇ UNVERIFIED |
| RARedi-mix Aledo Plant | Aledo | TX | — | ◇ UNVERIFIED |
| RARedi-mix Anna | Anna | TX | — | ◇ UNVERIFIED |
| RCRedimix Companies, INC. | Berwick | ME | — | ◇ UNVERIFIED |
| RCRedimix Companies, INC. - Dover | Dover | NH | — | ◇ UNVERIFIED |
| RCRedimix Companies, INC. - Manchester | Manchester | NH | — | ◇ UNVERIFIED |
| RCRedi-mix Concrete Mesquite Plant | Mesquite | TX | — | ◇ UNVERIFIED |
| RDRedi-mix Dallas Loop 12 | Dallas | TX | — | ◇ UNVERIFIED |
| RFRedi-mix Forney Plant | Forney | TX | — | ◇ UNVERIFIED |
| RLRedi-mix LP | Denton | TX | — | ◇ UNVERIFIED |
| RMRedi Mix Plant 11 | Sherman | TX | — | ◇ UNVERIFIED |
| RMRedi Mix Westlake Cbp Sn Ceclp327wlk | Westlake | TX | — | ◇ UNVERIFIED |
| RWRedi-mix Wylie Plant | Wylie | TX | — | ◇ UNVERIFIED |
| RRRed River Ready Mix - Alumax Facility | Texarkana | TX | — | ◇ UNVERIFIED |
| RRReflective Recycling of Sc LLC | Pacolet | SC | — | ◇ UNVERIFIED |
| RRRegional Ready Mix LLC | Rochelle | IL | — | ◇ UNVERIFIED |
| RCReid Concrete LLC | La Pine | OR | — | ◇ UNVERIFIED |
| RCReis Concrete Products INC | Alexandria | KY | — | ◇ UNVERIFIED |
| RCReis Concrete Products INC | Falmouth | KY | — | ◇ UNVERIFIED |
| RMReliable Mix Rmx 100 | Medicine Bow | WY | — | ◇ UNVERIFIED |
| RCRemedial Construction Services LP - Cameron Liquefaction Project Cbp #3 | Hackberry | LA | — | ◇ UNVERIFIED |
| RTRemediation Transportation Construction | Lost Hills | CA | — | ◇ UNVERIFIED |
| RER E Monks Const CO | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RMRe Monks Const CO | Florence | CO | — | ◇ UNVERIFIED |
| RPReno Portable Ready Mix 4715 | Carson City | NV | — | ◇ UNVERIFIED |