| 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 Montrose | Montrose | CO | — | ◇ UNVERIFIED |
| COCity of Montrose | Montrose | CO | — | ◇ UNVERIFIED |
| COCity of Mountain View | Mountain View | CA | — | ◇ UNVERIFIED |
| COCity of Pittsburg | Pittsburg | KS | — | ◇ 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 |
| COCity of Trinidad | Trinidad | CO | — | ◇ UNVERIFIED |
| COCity of Trinidad | Trinidad | CO | — | ◇ UNVERIFIED |
| COCity of Wolf Point Asphalt Plant | Wolf Point | MT | — | ◇ UNVERIFIED |
| CCCivil Constructors INC | Freeport | IL | — | ◇ UNVERIFIED |
| CMC.j. Miller, LLC - Westminster | Westminster | MD | — | ◇ UNVERIFIED |
| CSClairton Slag Inc/west Elizabeth Paving Matl Plt | West Elizabeth | PA | — | ◇ UNVERIFIED |
| CPClarkdale Plant #24 | Phoenix | AZ | — | ◇ UNVERIFIED |
| CAClarksburg Asphalt Company, Bridgeport | Bridgeport | WV | — | ◇ UNVERIFIED |
| CPClassic Petroleum Services, INC. | Lawton | TN | — | ◇ UNVERIFIED |
| CLC & L Concrete Works INC | Camden | NC | — | ◇ UNVERIFIED |
| CEClean Earth of Maryland INC | Hagerstown | MD | — | ◇ UNVERIFIED |
| CPCleburne Plant | Cleburne | TX | — | ◇ UNVERIFIED |
| CLClemente Latham Bridgeville Plant | Monticello | NY | — | ◇ UNVERIFIED |
| CHCleveland Hma | Cleveland | TX | — | ◇ UNVERIFIED |
| CQCleveland Quarry Robert Smith, Incorporated | Cleveland | TN | — | ◇ UNVERIFIED |
| CMClifton Mine | Ocala | FL | — | ◇ UNVERIFIED |
| CQClinton Quarry | Clinton | TN | — | ◇ UNVERIFIED |
| CCCloud CO. Highway Dept. (asphalt Plant) | Concordia | KS | — | ◇ UNVERIFIED |
| CMCloverleaf Mixing | Winston Salem | NC | — | ◇ UNVERIFIED |
| CSC&m Sand and Gravel CO | Erie, 0.6 Mi Nw of | CO | — | ◇ UNVERIFIED |
| CNC Nelson Sigmon Paving Incorporated | Conover | NC | — | ◇ UNVERIFIED |
| CLCnty Line Wrightsville Quarry | Wrightsville | PA | — | ◇ UNVERIFIED |
| CVCoachella Valley Aggregates INC | Indio | CA | — | ◇ UNVERIFIED |
| CACoastal Asphalt LLC | Georgetown | SC | — | ◇ UNVERIFIED |
| CBCoastal Bridge CO LLC - Hot Mix Asphalt Plant | Sulphur | LA | — | ◇ UNVERIFIED |
| CECoastal Emulsions of Missouri | Miller | MO | — | ◇ UNVERIFIED |
| CECoastal Energy Corporation / Coastal Energy Corporation | Clinton | OK | — | ◇ UNVERIFIED |
| CLCoast Land Clearing Incorporated | La Canada Flintridge | CA | — | ◇ UNVERIFIED |
| CIColaska Inc, Dba Se/secon Astec Six Pack | Juneau | AK | — | ◇ UNVERIFIED |
| CMCold Mix Inc, Wren Facility | Nettleton | MS | — | ◇ UNVERIFIED |
| CRCold River Materials | Walpole | NH | — | ◇ UNVERIFIED |
| CAColeman Asphalt Plant | Sumterville | FL | — | ◇ UNVERIFIED |
| CLColjen Leasing LTD Elpaso Asphalt | Colorado Springs | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways | Unknown | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5002 | Grand Junction | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5009 | Aurora | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5015 | Unk | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation | Alamosa | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation #5006 | Sterling | CO | — | ◇ UNVERIFIED |