| 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 |
| 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 |
| RRReno-sparks Ready Mix Inc/fernley Div | Fernley | NV | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2170 | Tulsa | OK | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2185 | Concordia | KS | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2185 | Junction City | KS | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2643 | Tulsa | OK | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2701 | Tulsa | OK | — | ◇ UNVERIFIED |
| RRReynolds Ready Mix LLC | Loxley | AL | — | ◇ UNVERIFIED |
| RFR F Herrera Concrete Construction | San Dimas | CA | — | ◇ UNVERIFIED |
| RLRhino LLC | Denver | CO | — | ◇ UNVERIFIED |
| RRRhino Ready Mix, LLC | Houston | TX | — | ◇ UNVERIFIED |
| RHR H Loven Co, INC. | Boone | NC | — | ◇ UNVERIFIED |
| RCRiber Construction INC | Dwight | IL | — | ◇ UNVERIFIED |
| RCRiccobene Concrete Masonry and Design | Albuquerque | NM | — | ◇ UNVERIFIED |
| RCRichmond Concrete Richmond Plant Division of Ernst Enterprises | Richmond | IN | — | ◇ UNVERIFIED |
| RHRichmond Hill (plant 10) | Richmond Hill | GA | — | ◇ UNVERIFIED |
| RRRichmond Rmc Plant | Richmond | VA | — | ◇ UNVERIFIED |
| RRRich Readimix Concrete INC | Greenbrae | CA | — | ◇ UNVERIFIED |
| RCRieth-riley Construction Co, INC | Mishawaka | IN | — | ◇ UNVERIFIED |
| RARight Away Redi-mix - Oakland Facility | Oakland | CA | — | ◇ UNVERIFIED |
| RARight Away Redi-mix - Pleasanton Facility | Pleasanton | CA | — | ◇ UNVERIFIED |
| RARight Away Redy Mix / County Quarry Products, INC / County Asphalt | Martinez | CA | — | ◇ UNVERIFIED |
| RARight Away Redy Mix INC | Pleasanton | CA | — | ◇ UNVERIFIED |
| RARight Away Redy Mix INC | Union City | CA | — | ◇ UNVERIFIED |
| RARight Away Redy Mix, INC | Oakland | CA | — | ◇ UNVERIFIED |
| RBRight Beaver Ready/mix | Lackey | KY | — | ◇ UNVERIFIED |
| RMRightmyer Machine Rentals INC | Roanoke Rapids | NC | — | ◇ UNVERIFIED |
| RRRiley Ready Mix & Materials Inc-riley Ready Mix & Materials INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| RIRinker Indianapolis Pipe | Indianapolis | IN | — | ◇ UNVERIFIED |
| RMRinker Materials | Littleton | CO | — | ◇ UNVERIFIED |
| RMRinker Materials | Vancouver | WA | — | ◇ UNVERIFIED |
| RMRinker Materials - Grand Junction | Grand Junction | CO | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit | Grand Island | NE | — | ◇ UNVERIFIED |
| RMRinker Materials/lockhart (iw) | Orlando | FL | — | ◇ UNVERIFIED |
| RCRio's Concrete Pumping & Rental INC | Medley | FL | — | ◇ UNVERIFIED |
| RCRippel Construction INC | Bureau Junction | IL | — | ◇ UNVERIFIED |
| RRRippel Ready Mix INC | Bloomington | IL | — | ◇ UNVERIFIED |
| RRRitchey's Redi Mix INC | Wray | CO | — | ◇ UNVERIFIED |
| RWRite Way Concrete Products CO | Springfield | MO | — | ◇ UNVERIFIED |
| RRRivcrete Ready Mix, LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| RCRiver City Concrete, INC. | Selmer | TN | — | ◇ UNVERIFIED |
| RCRiver City Concrete, INC - Waynesboro Plant | Waynesboro | TN | — | ◇ UNVERIFIED |
| RCRiver City Ready Mix Helotes | Helotes | TX | — | ◇ UNVERIFIED |
| RCRiver City Ready Mix. INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| RFRiver Front Recycling & Aggregate CORP | Waterford Twp | NJ | — | ◇ UNVERIFIED |
| RRRiver Redi Mix | Blackstone | IL | — | ◇ UNVERIFIED |
| RRRiver Redi Mix | Vandalia | IL | — | ◇ UNVERIFIED |
| RRRiver Redi - Mix INC | Marseilles | IL | — | ◇ UNVERIFIED |
| RRRiver Redi Mix INC | Ransom | IL | — | ◇ UNVERIFIED |
| RRRiver Redi Mix INC | Ransom | IL | — | ◇ UNVERIFIED |
| RRRiver Redi-mix INC | Minonk | IL | — | ◇ UNVERIFIED |
| RRRiver Road Ready Mix Products, INC | Jesup | GA | — | ◇ UNVERIFIED |
| RRRiverside Ready Mix, INC. | Grants Pass | OR | — | ◇ UNVERIFIED |
| RGRiverstone Group INC | Rock Island | IL | — | ◇ UNVERIFIED |
| RBRiverview Block INC. | Berwick | PA | — | ◇ UNVERIFIED |
| RMR.j. Miles Company | Colfax | CA | — | ◇ UNVERIFIED |
| RJR J Paquette | Holden | MA | — | ◇ UNVERIFIED |
| RPR.j. Paquette Concrete | Holden | MA | — | ◇ UNVERIFIED |
| RLRkbwlg, LLC | Omaha | NE | — | ◇ UNVERIFIED |
| RHR.k. Hall LLC | Ardmore | OK | — | ◇ UNVERIFIED |
| RBRl Brink CORP | Quincy | IL | — | ◇ UNVERIFIED |
| RLR & L Ready Mix Concrete INC | Robinson | IL | — | ◇ UNVERIFIED |
| RLR. L. Schaff Concrete Construction, INC. | Shepherd | MT | — | ◇ UNVERIFIED |
| RBRm Batch Plant - Tyndall Afb | Panama City | FL | — | ◇ UNVERIFIED |
| RCRmc Carolina Materials Incorporated | Stokesdale | NC | — | ◇ UNVERIFIED |
| RCRmc Cemex | Sacramento | CA | — | ◇ UNVERIFIED |
| RERmc Ewell INC | Gautier | MS | — | ◇ UNVERIFIED |
| RERmc Ewell INC | Long Beach | MS | — | ◇ UNVERIFIED |
| RLRmc Lonestar | Roseville | CA | — | ◇ UNVERIFIED |
| RPRmc Pacific Materials INC | Crockett | CA | — | ◇ UNVERIFIED |
| RPRmc Pacific Materials INC | San Ramon | CA | — | ◇ UNVERIFIED |
| RPRmc Plant 50 - Fredericktown | Fredericktown | MO | — | ◇ UNVERIFIED |
| RRRmi Ready Mix | San Tan Valley | AZ | — | ◇ UNVERIFIED |
| RBRmusa - Bayou Chico | Pensacola | FL | — | ◇ UNVERIFIED |
| RDRmusa - Douglasville | Douglasville | GA | — | ◇ UNVERIFIED |
| RRRoadway Rock & Redi-mix | Wells | NV | — | ◇ UNVERIFIED |
| RCRoanoke Cement Company | Winston Salem | NC | — | ◇ UNVERIFIED |
| RCRoanoke Chowan Ready Mix | Ahoskie | NC | — | ◇ UNVERIFIED |
| RCRoanoke Concrete Products CO | Lincoln | IL | — | ◇ UNVERIFIED |