| BIBellecrete INC | San Fernando | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BIBend Inds | West Bend | WI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BIBend Industries Appleton | Appleton | WI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBesser Company USA | Alpena | MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBest Block - Bridgeton, Mo Plant [earth City] | Bridgeton | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBest Block - Featherlite Converse Plant | Converse | TX | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBetter Block Company Incorporated | Springfield | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBlocklite | Selma | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BUBlock USA Mid-south Division, LLC | Panama City Beach | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Winchester | TN | Wood Product Manufacturing321211 | — | ◇ UNVERIFIED |
| BEBloquera El Valle INC. | Lajas | PR | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BDBlue DIamond USA LLC | Orlando | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBonnici Concrete L.l.c. | Utica | MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BPBorgert Products | St. Joseph | MN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| 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 | Sunnyvale | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCalstone Company | Galt | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ 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 |
