| RCRoanoke Concrete Products CO | Bloomington | IL | — | ◇ UNVERIFIED |
| RCRoanoke Concrete Products CO | Lincoln | IL | — | ◇ UNVERIFIED |
| RCRoanoke Concrete Products CO | Petersburg | IL | — | ◇ UNVERIFIED |
| RFRoaring Fork Redi Mix INC | Lakewood | CO | — | ◇ UNVERIFIED |
| RCRoberson Contracting, INC. | Williamston | NC | — | ◇ UNVERIFIED |
| RLRobert L Kelly Asphalt Incorporated | Reynolds | IN | — | ◇ UNVERIFIED |
| RMRobert Medina and Sons - Concrete Batch | Taos | NM | — | ◇ UNVERIFIED |
| RARoberts Auto Salvage | Labelle | FL | — | ◇ UNVERIFIED |
| RCRoberts Concrete Products | Roberts | WI | — | ◇ UNVERIFIED |
| RLRoberts, Lehman Company, Walnut | Walnut | MS | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | Corona | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | Beaumont | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | Corona | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | French Camp | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix Lake Forest Plant 18 | Foothill Ranch | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix San Bernardino Plant 12 | San Bernardino | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix Santa Ana Plant 17 | Santa Ana | CA | — | ◇ UNVERIFIED |
| RRRobertsons Rialto Batch and Rock Plant | Rialto | CA | — | ◇ UNVERIFIED |
| RYRobert Young & Sons Milford Asphalt CO | West Milford | NJ | — | ◇ UNVERIFIED |
| RCRobins Construction - 5101 State Hwy 285 | Antonito Area | CO | — | ◇ UNVERIFIED |
| RPRobinson Paving Company - Asphalt Division Plant 1 | Fortson | GA | — | ◇ UNVERIFIED |
| RPRobinson Paving Company - Asphalt Division Plant 2 | Talbotton | GA | — | ◇ UNVERIFIED |
| RARochester Asphalt Walworth Plt - Do Not Use | Walworth | NY | — | ◇ UNVERIFIED |
| RBRochester Bituminous | Rochester | MA | — | ◇ UNVERIFIED |
| RSRochester Sand & Gravel - Plant 53 | Rochester | MN | — | ◇ UNVERIFIED |
| RSRockbridge Stone Products | Glasgow | VA | — | ◇ UNVERIFIED |
| RRRockcastle Ready Mix | Mount Vernon | KY | — | ◇ UNVERIFIED |
| RFRock Falls Hot Mix Asphalt Plt | Rock Falls | IL | — | ◇ UNVERIFIED |
| RCRockford Cement Products CO | Rockford | IL | — | ◇ UNVERIFIED |
| RRRockingham Redi-mix - Clearbrook Facility | Stephenson | VA | — | ◇ UNVERIFIED |
| RRRockingham Redi-mix INC - Mt Sidney | Mount Sidney | VA | — | ◇ UNVERIFIED |
| RRRockingham Redi-mix INC - Strasburg | Strasburg | VA | — | ◇ UNVERIFIED |
| RRRockingham Redi-mix - Mt Jackson Facility | Mount Jackson | VA | — | ◇ UNVERIFIED |
| RRRock Road CO INC | Belvidere | IL | — | ◇ UNVERIFIED |
| RRRock Road Companies INC | Rockford | IL | — | ◇ UNVERIFIED |
| RRRock Road Companies INC | Rochelle | IL | — | ◇ UNVERIFIED |
| RCRock-tred CORP | Skokie | IL | — | ◇ UNVERIFIED |
| RARockview Asphalt Plant | Rockford | IL | — | ◇ UNVERIFIED |
| RARockville Asphalt Plant | Rockville | VA | — | ◇ UNVERIFIED |
| RFRockville Fuel and Feed | Rockville | MD | — | ◇ UNVERIFIED |
| RPRockwall Plant | Rockwall | TX | — | ◇ UNVERIFIED |
| RQRockydale Quarries - Fold N Go | Roanoke | VA | — | ◇ UNVERIFIED |
| RMRocky Mountain Materials & Asphalt INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RMRocky Mountain Materials & Asphalt INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RMRocky Mountain Premix - Wabash Plant | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestress LLC (structural Plant) | Denver | CO | — | ◇ UNVERIFIED |
| RMRocky Mountain Redi Mix Plt No3 | Rifle | CO | — | ◇ UNVERIFIED |
| RMRocky Mtn Materials & Asphalt Portable | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RCRocla Concrete Tie Incorporated | Denver | CO | — | ◇ UNVERIFIED |
| RRRoessler Ready Mix INC | Columbia | IL | — | ◇ UNVERIFIED |