| BCBosse Concrete Products | Jonesboro | GA | — | ◇ UNVERIFIED |
| BBBoxley Block, LLC | Lynchburg | VA | — | ◇ UNVERIFIED |
| BCBoxley Concrete Products | Lynchburg | VA | — | ◇ UNVERIFIED |
| BBBoykin Brothers, LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BBBoyle Block CO | Danville | KY | — | ◇ UNVERIFIED |
| BRBract Retaining Wall and Excavating LLC | Ashland | VA | — | ◇ UNVERIFIED |
| BBBrenny-dahl Block CO | Cloquet | MN | — | ◇ UNVERIFIED |
| BCBrentanos Concrete Connection, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| BABrick Aquisition Company, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| BIBrickcraft INC | Farmersburg | IN | — | ◇ UNVERIFIED |
| BPBrute Properties Concrete Block Plant | Wildwood | FL | — | ◇ UNVERIFIED |
| BHBryce Hill, INC | Saint Paris | OH | — | ◇ UNVERIFIED |
| BABuild America | Sedalia | CO | — | ◇ UNVERIFIED |
| BCBuilders Concrete | Clovis | CA | — | ◇ UNVERIFIED |
| BSBuilders Supply Company of Cookeville | Cookeville | TN | — | ◇ UNVERIFIED |
| BBBuilding Blocks, INC | Kissimmee | FL | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/hartley St Plt | York | PA | — | ◇ UNVERIFIED |
| CCCaliber Cast Stone | O Fallon | MO | — | ◇ UNVERIFIED |
| COCalmat of Fresno | Fresno | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | San Martin | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | Galt | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | Sunnyvale | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | Tracy | CA | — | ◇ UNVERIFIED |
| CCCalstone Company Dba Mission Concrete Products | Gilroy | CA | — | ◇ UNVERIFIED |
| CTCalstone Tracy-oldcastle Apg | Tracy | CA | — | ◇ UNVERIFIED |
| CBCantelli Block & Brick | Huron | OH | — | ◇ UNVERIFIED |
| CRCapital Ready Mix INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| CCCapitol Concrete Products | Topeka | KS | — | ◇ UNVERIFIED |
| CECarolina East Enterprises, Inc | Enfield | NC | — | ◇ UNVERIFIED |
| CBCastlelite Block LLC | Dixon | CA | — | ◇ UNVERIFIED |
| CICement Industries INC | Fort Myers | FL | — | ◇ UNVERIFIED |
| CPCement Products Manufacturing CO | Redmond | OR | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic L | Hendersonville | NC | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic, LLC - | Marion | NC | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic, LLC Colfax | Colfax | NC | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic, LLC - Franklin | Franklin | NC | — | ◇ UNVERIFIED |
| CMCemex Materials LLC | Bernalillo | NM | — | ◇ UNVERIFIED |
| CACentral Arizona Block, INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| CKCentral Ky Mixed Concrete | Berea | KY | — | ◇ UNVERIFIED |
| CMCentral Materials, LLC | Central Point | OR | — | ◇ UNVERIFIED |
| CPCentral Processing Corporation | Eau Claire | WI | — | ◇ UNVERIFIED |
| CRCentral Rock Corporation/southwinds Express Construction, Llc/scott Materials, I | Scott | LA | — | ◇ UNVERIFIED |
| CSCentral Sarasota Recycling LLC | Sarasota | FL | — | ◇ UNVERIFIED |
| CVCentral Valley Ag | Humphrey | NE | — | ◇ UNVERIFIED |
| CRCfi Ready Mixed Concrete INC | Lillington | NC | — | ◇ UNVERIFIED |
| CBChaplin Block | Bedford Heights | OH | — | ◇ UNVERIFIED |
| CCChesapeake City of - Public Works | Chesapeake | VA | — | ◇ UNVERIFIED |
| CCCinder Cone Mine | Lathrop Wells | NV | — | ◇ UNVERIFIED |
| CBCind-r-lite Block Company | Las Vegas | NV | — | ◇ UNVERIFIED |
| CBCind-r-lite Block Company | North Las Vegas | NV | — | ◇ UNVERIFIED |
| CLClearlake Lava Dba Clearcast Concrete | Colusa | CA | — | ◇ UNVERIFIED |
| CGClub Green LLC | Sacramento | CA | — | ◇ UNVERIFIED |
| CSCoady Supply Co., INC. | Springfield | IL | — | ◇ UNVERIFIED |
| CACoast Aggregates | San Diego | CA | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO Defuniak Springs Block | Defuniak Springs | FL | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO Pensacola Block | Pensacola | FL | — | ◇ UNVERIFIED |
| CICochran Industries INC - Ky | Robinson Crk | KY | — | ◇ UNVERIFIED |
| CICochran Industries INC - Ky | Pikeville | KY | — | ◇ UNVERIFIED |
| CMColumbia Machine, INC. | Sullivan | MO | — | ◇ UNVERIFIED |
| CBCommonwealth Block CO INC | Lexington | KY | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant, Gcp5-7959 | Bernalillo | NM | — | ◇ UNVERIFIED |
| CBConcrete & Block CO | Aurora | IL | — | ◇ UNVERIFIED |
| CPConcrete Products Company | Charleston | SC | — | ◇ UNVERIFIED |
| CSConcrete Supply Company, LLC - Albemarle | Albemarle | NC | — | ◇ UNVERIFIED |
| CVConn Valley Block CO | W Springfield | MA | — | ◇ UNVERIFIED |
| CConrock | Roanoke | VA | — | ◇ UNVERIFIED |
| CCConsumers Concrete Corporation | Kalamazoo | MI | — | ◇ UNVERIFIED |
| CCConsumers Concrete-kalamazoo | Kalamazoo | MI | — | ◇ UNVERIFIED |
 Contech Engineered Solutions LLC | Fort Pierce | FL | — | ◇ UNVERIFIED |
| CCContinntal Cast Stone of Texas | Grand Prairie | TX | — | ◇ UNVERIFIED |
| CBConway Block Co., INC. | Conway | AR | — | ◇ UNVERIFIED |
| CSCoreslab Structures (miami)inc | Miami | FL | — | ◇ UNVERIFIED |
| CCCornick Concrete Products CO | Pekin | IL | — | ◇ UNVERIFIED |
| CBCorotherm Building Systems, INC | Guntersville | AL | — | ◇ UNVERIFIED |
| CCCotter Corp-cancelled 12/05/01 | Canon City | CO | — | ◇ UNVERIFIED |
| CMCounty Materials | Janesville | WI | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Eau Claire | WI | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Charleston | IL | — | ◇ UNVERIFIED |
| CMCreative Mines LLC | Malad City | ID | — | ◇ UNVERIFIED |
| CSCreative Stone Mfg, INC Dba Coronado Stone Products | Fontana | CA | — | ◇ UNVERIFIED |
| CGCreek Government Services, INC. | Byhalia | MS | — | ◇ UNVERIFIED |
| CBCrego Block, Albuquerque Block Plant | Albuquerque | NM | — | ◇ UNVERIFIED |
| CCCrescent Coal CO | East Mcdowell | KY | — | ◇ UNVERIFIED |
| CVCR Vernier, LLC | Belleville | IL | — | ◇ UNVERIFIED |
| CPCst Products CORP | Pedricktown | NJ | — | ◇ UNVERIFIED |
| CSC. Stuart Cast Stone, LTD. | San Antonio | TX | — | ◇ UNVERIFIED |
| CICxt Incorporated - Vanhooseco Lebanon | Lebanon | TN | — | ◇ UNVERIFIED |
| COCydi - Ocala Terminal | Ocala | FL | — | ◇ UNVERIFIED |
| CYC Yelvington Dist Co/preferred Mtls INC | Bonita Springs | FL | — | ◇ UNVERIFIED |
| DCDallas Cast Stone Ii CORP | Dallas | TX | — | ◇ UNVERIFIED |
| DJDaryl J. Buck | Fontana | CA | — | ◇ UNVERIFIED |
| DBDebary Block | Casselberry | FL | — | ◇ UNVERIFIED |
| DPDecor Precast of Michigan | Holt | MI | — | ◇ UNVERIFIED |
| DSDelgreco Supply CO INC | Northborough | MA | — | ◇ UNVERIFIED |
| DBDesert Block Company INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| DPDetroit Precast, LLC | Detroit | MI | — | ◇ UNVERIFIED |
| DDiversitech | Columbus | TX | — | ◇ UNVERIFIED |
| DIDoren, INC. | Wampum | PA | — | ◇ UNVERIFIED |
| DSDoric South, INC. | Demopolis | AL | — | ◇ UNVERIFIED |
| DSDowell Schlumberger INC | Prestonsburg | KY | — | ◇ UNVERIFIED |
