| 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 | Junction City | KS | — | ◇ UNVERIFIED |
| RPRex Portable Concrete Plant No. 2185 | Concordia | 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 |
| 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 |
| 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 | Union City | CA | — | ◇ UNVERIFIED |
| RARight Away Redy Mix INC | Pleasanton | 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 | Vancouver | WA | — | ◇ UNVERIFIED |
| RMRinker Materials | Littleton | CO | — | ◇ 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 | Vandalia | IL | — | ◇ UNVERIFIED |
| RRRiver Redi Mix | Blackstone | 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 |