| BMBethlehem Manufacturing Co., INC. | Hickory | NC | — | ◇ UNVERIFIED |
| BSBethlehem Stone | Climax Springs | MO | — | ◇ UNVERIFIED |
| BBBetter Block Company Incorporated | Springfield | TN | — | ◇ UNVERIFIED |
| BIBickes, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| BIBickes, INC. | Lawrenceburg | TN | — | ◇ UNVERIFIED |
| BIBickes, INC. | Jackson | MS | — | ◇ UNVERIFIED |
| BIBickes INC D/b/a Jackson Wilbert Burial Vault CO | Jackson | TN | — | ◇ UNVERIFIED |
| BIBickes, INC. Dba Wilbert Burial Vault Company | Fort Branch | IN | — | ◇ UNVERIFIED |
| BRBig Rock Manufacturing INC | Honolulu | HI | — | ◇ UNVERIFIED |
| BBBinghamton Burial Vault Co., INC. | Binghamton | NY | — | ◇ UNVERIFIED |
 Binghamton Precast & Supply CORP. | Binghamton | NY | — | ◇ UNVERIFIED |
| BGBlack Gunite, INC. | Saint Joseph | MO | — | ◇ UNVERIFIED |
| BWBlairsville Wilbert Vault Company | Mount Pleasant | PA | — | ◇ UNVERIFIED |
| BPBlakeslee Prestress, INC. | East Boston | MA | — | ◇ UNVERIFIED |
| BCBledsoe Concrete Foundation Specialist, INC. | Wilmington | NC | — | ◇ UNVERIFIED |
| BBlocklite | Selma | CA | — | ◇ UNVERIFIED |
| BUBlock USA Mid-south Division, LLC | Panama City Beach | FL | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Winchester | TN | — | ◇ UNVERIFIED |
| BEBloquera El Valle INC. | Lajas | PR | — | ◇ UNVERIFIED |
| BDBlue DIamond USA LLC | Orlando | FL | — | ◇ UNVERIFIED |
| BLBlue Level Construction Consulting LLC | North Las Vegas | NV | — | ◇ UNVERIFIED |
| BMBonded Materials Company Dba Bomat, LTD | Kailua Kona | HI | — | ◇ UNVERIFIED |
| BMBonded Materials Company Manufacturing Center | Kapolei | HI | — | ◇ UNVERIFIED |
| BCBonnici Concrete L.l.c. | Utica | MI | — | ◇ UNVERIFIED |
| BCBoral Concrete Products, LLC | Dallas | TX | — | ◇ UNVERIFIED |
| BRBoral Roofing LLC | Gilroy | CA | — | ◇ UNVERIFIED |
| BRBoral Roofing, LLC | Rialto | CA | — | ◇ UNVERIFIED |
| BRBoral Roofing, LLC. | Pompano Beach | FL | — | ◇ UNVERIFIED |
| BPBorgert Products | Saint Joseph | MN | — | ◇ UNVERIFIED |
| 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 |
| BSBretthauer-ramirez Staffing, INC. | Pearland | TX | — | ◇ UNVERIFIED |
| BABrick Aquisition Company, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| BIBrickcraft INC | Farmersburg | IN | — | ◇ UNVERIFIED |
| BCBristol County Pre-cast, INC. | Westport | MA | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC | Esko | MN | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC | Mankato | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO. | Milwaukee | WI | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO - Austin | Austin | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO. - La Crosse | La Crosse | WI | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO - Lakeville | Lakeville | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO - Mankato | Mankato | MN | — | ◇ UNVERIFIED |
| BHBryce Hill, INC | Saint Paris | OH | — | ◇ UNVERIFIED |
