| CSConsolidated Sand & Gravel | Fairbury | NE | — | ◇ UNVERIFIED |
| CMConst. Materials Pacific LLC | Santa Paula | CA | — | ◇ UNVERIFIED |
| CSConstruction Specialty Service, INC Dba Css INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| CCConsumers Concrete Corporation | Kalamazoo | MI | — | ◇ UNVERIFIED |
| CCContinental Cast Stone East By Russell, INC. | West Berlin | NJ | — | ◇ UNVERIFIED |
| CCContinental Cast Stone, LLC | Shawnee | KS | — | ◇ UNVERIFIED |
| CFContinental Florida Materials, INC. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| CCContinntal Cast Stone of Texas | Grand Prairie | TX | — | ◇ UNVERIFIED |
| CCContractors Concrete INC | Effingham | IL | — | ◇ UNVERIFIED |
| CPContractors Precast CORP. | Davidsonville | MD | — | ◇ UNVERIFIED |
| CSContractor's Supplies, INC. | Lufkin | TX | — | ◇ UNVERIFIED |
| CBConway Block Co., INC. | Conway | AR | — | ◇ UNVERIFIED |
| CCCook Concrete Products | Redding | CA | — | ◇ UNVERIFIED |
| CICoon Industries, INC. | Pittston | PA | — | ◇ UNVERIFIED |
| CRCooper Ready Mix 00314 | Salmon | ID | — | ◇ UNVERIFIED |
| CWCooper Wilbert Vault CO | Barrington | NJ | — | ◇ UNVERIFIED |
| CRCoppell Ready Mix | Coppell | TX | — | ◇ UNVERIFIED |
| CCCopperfield Chimney Supply CORP | Swedesboro | NJ | — | ◇ UNVERIFIED |
| CRCoral Reef Cast Stone | Manalapan | FL | — | ◇ UNVERIFIED |
| CMCorbin Materials CO INC | Corbin | KY | — | ◇ UNVERIFIED |
| CCCordele Concrete | Cordele | GA | — | ◇ UNVERIFIED |
| CBCordray Bros INC | Garden Prairie | IL | — | ◇ UNVERIFIED |
| CCCore Concrete LLC | Lexington | SC | — | ◇ UNVERIFIED |
| CSCoreslab Structures (ariz) INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| CSCoreslab Structures (atlanta) INC. | Duluth | GA | — | ◇ UNVERIFIED |
| CSCoreslab Structures Indianapolis Incorporated | Indianapolis | IN | — | ◇ UNVERIFIED |
| CSCoreslab Structures (miami) INC. | Doral | FL | — | ◇ UNVERIFIED |
| CCCornerstone Concrete Services LLC | Boise | ID | — | ◇ UNVERIFIED |
| CCCornet Concrete Products INC Dba Desert Ready Mix | Coachella | CA | — | ◇ UNVERIFIED |
| CSCoronado Stone Products | Westfield | NY | — | ◇ UNVERIFIED |
| CBCorotherm Building Systems, INC | Guntersville | AL | — | ◇ UNVERIFIED |
| CRCortelyou Ready Mix LLC | Bushnell | IL | — | ◇ UNVERIFIED |
| CCCossitt Concrete Products INC. | Hamilton | NY | — | ◇ UNVERIFIED |
| CRCoulterville-greeley Ready Mix | Coulterville | CA | — | ◇ UNVERIFIED |
| CRCountryside Realty LLC Concrete Supply LLC | Alorton | IL | — | ◇ UNVERIFIED |
| CMCounty Materials | Janesville | WI | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Mount Vernon | IL | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Elderon | WI | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Charleston | IL | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Eau Claire | WI | — | ◇ UNVERIFIED |
| CMCounty Materials Laydown Yard Expansion | Maxwell | IN | — | ◇ UNVERIFIED |
| CBCovered Bridge Precast | Ephrata | PA | — | ◇ UNVERIFIED |
| CCCowan Concrete Products INC Batch Plt | Greeley | CO | — | ◇ UNVERIFIED |
| CGCowden Gravel Cowden INC | Bellingham | WA | — | ◇ UNVERIFIED |
| CTCow Town Redi Mix Concrete | Dallas | TX | — | ◇ UNVERIFIED |
| CMCox Mobile Concrete | Anderson | CA | — | ◇ UNVERIFIED |
| CNCpb No 2 | Tyler | TX | — | ◇ UNVERIFIED |
| CSCpc Southwest Materials Valencia Plant | Tucson | AZ | — | ◇ UNVERIFIED |
| CPC P M Development CORP | Tyler | WA | — | ◇ UNVERIFIED |
| CPC P M Development CORP | Spokane Valley | WA | — | ◇ UNVERIFIED |