| BBBoxley Block, LLC | Lynchburg | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBoykin Brothers, LLC | Baton Rouge | LA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBoyle Block CO | Danville | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BRBract Retaining Wall and Excavating LLC | Ashland | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBrentanos Concrete Connection, INC. | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BABrick Aquisition Company, INC. | Montgomery | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BHBryce Hill, INC | Saint Paris | OH | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BABuild America | Sedalia | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBuilders Concrete | Clovis | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BSBuilders Supply Company of Cookeville | Cookeville | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCaliber Cast Stone | O Fallon | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| COCalmat of Fresno | Fresno | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CCCalstone Company | Galt | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCalstone Company | Sunnyvale | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CRCapital Ready Mix INC | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CECarolina East Enterprises, Inc | Enfield | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBCastlelite Block LLC | Dixon | CA | Nonmetallic Mineral Product Manufacturing327121 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic, LLC - | Marion | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic, LLC - Franklin | Franklin | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CMCemex Materials LLC | Bernalillo | NM | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CACentral Arizona Block, INC. | Tucson | AZ | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CKCentral Ky Mixed Concrete | Berea | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CPCentral Processing Corporation | Eau Claire | WI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CRCentral Rock Corporation/southwinds Express Construction, Llc/scott Materials, I | Scott | LA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CSCentral Sarasota Recycling LLC | Sarasota | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CVCentral Valley Ag | Humphrey | NE | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CRCfi Ready Mixed Concrete INC | Lillington | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBChaplin Block | Bedford Heights | OH | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCinder Cone Mine | Lathrop Wells | NV | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBCind-r-lite Block Company | North Las Vegas | NV | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBCind-r-lite Block Company | Las Vegas | NV | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| COCity of Irvine | Irvine | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CLClearlake Lava Dba Clearcast Concrete | Colusa | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CGClub Green LLC | Sacramento | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CSCoady Supply Co., INC. | Springfield | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CACoast Aggregates | San Diego | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO Pensacola Block | Pensacola | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CICochran Industries INC - Ky | Robinson Crk | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CICochran Industries INC - Ky | Pikeville | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CMColumbia Machine, INC. | Sullivan | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBCommonwealth Block CO INC | Lexington | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant, Gcp5-7959 | Bernalillo | NM | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBConcrete & Block CO | Aurora | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CPConcrete Products Company | Charleston | SC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CConrock | Roanoke | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCConsumers Concrete Corporation | Kalamazoo | MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCContinntal Cast Stone of Texas | Grand Prairie | TX | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBConway Block Co., INC. | Conway | AR | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBCorotherm Building Systems, INC | Guntersville | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CMCounty Materials | Janesville | WI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
