| CMChristiana Materials | Christiana | DE | — | ◇ UNVERIFIED |
| CCChristian County Concrete | Nixa | MO | — | ◇ UNVERIFIED |
| CVChristy Vault Company Tulare | Tulare | CA | — | ◇ UNVERIFIED |
| CMCic - Madison | Lee | FL | — | ◇ UNVERIFIED |
| CCCity & County of Denver - Roslyn | Denver | CO | — | ◇ UNVERIFIED |
| COCity of Bella Vista Street Dept. | Bella Vista | AR | — | ◇ UNVERIFIED |
| COCity of Chanute | Chanute | KS | — | ◇ UNVERIFIED |
| COCity of Davenport Public Works Center | Davenport | IA | — | ◇ UNVERIFIED |
| COCity of Fort Collins Streets Dept | Fort Collins | CO | — | ◇ UNVERIFIED |
| COCity of Fort Wayne Street Department | Fort Wayne | IN | — | ◇ UNVERIFIED |
| COCity of Montrose | Montrose | CO | — | ◇ UNVERIFIED |
| COCity of Pittsburgh Asphalt Plant | Pittsburgh | PA | — | ◇ UNVERIFIED |
| COCity of St Paul Asphalt Plant | Saint Paul | MN | — | ◇ UNVERIFIED |
| COCity of Syracuse Dept of Public Works | Syracuse | NY | — | ◇ UNVERIFIED |
| CWCity Wide Construction Products, INC. | Ozark | MO | — | ◇ UNVERIFIED |
| CHC.j. Horner Company - Nashville Plant | Nashville | AR | — | ◇ UNVERIFIED |
| CMC.j. Miller, LLC - Westminster | Westminster | MD | — | ◇ UNVERIFIED |
| CSClairton Slag Inc/west Elizabeth Paving Matl Plt | West Elizabeth | PA | — | ◇ UNVERIFIED |
| CAClarksburg Asphalt Company, Bridgeport | Bridgeport | WV | — | ◇ UNVERIFIED |
| CCClarkson Const. (rex #6209) (portable)(air) | Portable | KS | — | ◇ UNVERIFIED |
| CCClarkson Construction Co-kansas City (87th Street) | Kansas City | MO | — | ◇ UNVERIFIED |
| CMClarksville Mobile Mix and Materials LLC | Clarksville | TN | — | ◇ UNVERIFIED |
| CCClassic Cast | Freeport | FL | — | ◇ UNVERIFIED |
| CMClassic Marble CO | Nettie | WV | — | ◇ UNVERIFIED |
| CCClawson Concrete Company | Sterling Heights | MI | — | ◇ UNVERIFIED |
| CBClayton Block CO | Wall | NJ | — | ◇ UNVERIFIED |
| CBClayton Block CO INC | Edison | NJ | — | ◇ UNVERIFIED |
| CLC L Benton & Sons INC | Myrtle Beach | SC | — | ◇ UNVERIFIED |
| CPClean Planet, INC. | Stockton | CA | — | ◇ UNVERIFIED |
| CLClear Lake Lava Dba Williams Redi Mix INC. | Williams | CA | — | ◇ UNVERIFIED |
| CCClearwater, City of - Master Reuse System | Clearwater | FL | — | ◇ UNVERIFIED |
| CCClearwater Concrete Kooskia Facility | Kamiah | ID | — | ◇ UNVERIFIED |
| CFClemente Fane Concrete CORP | Pittsfield | MA | — | ◇ UNVERIFIED |
| CLClemente Latham Concrete | Cohoes | NY | — | ◇ UNVERIFIED |
| CLClemente Latham Glens Falls Plant | Glens Falls | NY | — | ◇ UNVERIFIED |
| CQCleveland Quarry Robert Smith, Incorporated | Cleveland | TN | — | ◇ UNVERIFIED |
| CBClinton Block and Supply | Clinton | NJ | — | ◇ UNVERIFIED |
| CCClinton County Asphalt Plant | Schuyler Falls | NY | — | ◇ UNVERIFIED |
| CQClinton Quarry | Clinton | TN | — | ◇ UNVERIFIED |
| CCCloud CO. Highway Dept. (asphalt Plant) | Concordia | KS | — | ◇ UNVERIFIED |
| CNCloud Nine Enterprises | Rutledge | TN | — | ◇ UNVERIFIED |
| CRClovis Rd Facility | Lubbock | TX | — | ◇ UNVERIFIED |
| CPCmc Plant 1 - South Madison Plant | Wichita | KS | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO | Fort Pierce | FL | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO Defuniak Springs Block | Defuniak Springs | FL | — | ◇ UNVERIFIED |
| CBCoastal Bridge CO LLC - Port Allen Asphalt Plant | Port Allen | LA | — | ◇ UNVERIFIED |
| CCCoastal Concrete | Johns Island | SC | — | ◇ UNVERIFIED |
| CCCoastal Concrete:columbia | Columbia | SC | — | ◇ UNVERIFIED |
| CCCoastal Concrete Myrtle Beach | Conway | SC | — | ◇ UNVERIFIED |