| ASAthens Stonecasting, INC | Athens | GA | — | ◇ UNVERIFIED |
| AWAtlanta West Cast Stone | Bremen | GA | — | ◇ UNVERIFIED |
| ACAtlantic Concrete Products | Douglasville | GA | — | ◇ UNVERIFIED |
| ACAtlantic Concrete Pumping Enterprises INC | Coconut Creek | FL | — | ◇ UNVERIFIED |
| ACAtlas Construction Supply, INC | Fullerton | CA | — | ◇ UNVERIFIED |
| APAtmi Precast INC. | Kenosha | WI | — | ◇ UNVERIFIED |
| ACAugusta Concrete Block | North Augusta | SC | — | ◇ UNVERIFIED |
| ABAzar Block & Brick of South Texas INC | Mcallen | TX | — | ◇ UNVERIFIED |
| AAAzaro Aparicio & Sergio H Aparicio | San Juan | TX | — | ◇ UNVERIFIED |
| BSBadger Shredding Products INC | Fairmont City | IL | — | ◇ UNVERIFIED |
| BBalcon | Manassas | VA | — | ◇ UNVERIFIED |
| BLBaleydian, LLC | Perris | CA | — | ◇ UNVERIFIED |
 Baltimore Fabrication | Emigsville | PA | — | ◇ UNVERIFIED |
| BBBarboursville Block Manufacturing Company | Huntington | WV | — | ◇ UNVERIFIED |
| BRBark River Concrete Products | Bark River | MI | — | ◇ UNVERIFIED |
| BRBartile Roofs INC | Tooele | UT | — | ◇ UNVERIFIED |
| BRBartile Roofs INC | Centerville | UT | — | ◇ UNVERIFIED |
| BRBartile Roofs INC | South Ogden | UT | — | ◇ UNVERIFIED |
| BPBartow Precast INC. | Cartersville | GA | — | ◇ UNVERIFIED |
| BBasalite | Carson City | NV | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Fort Lupton | CO | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products LLC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products LLC Truck Shop | Carson City | NV | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products Site | Portland | OR | — | ◇ UNVERIFIED |
| BPBassbrook Products INC Dba Cohasset Concrete Produ | Cohasset | MN | — | ◇ UNVERIFIED |
| BLBaton LLC | Louisville | KY | — | ◇ UNVERIFIED |
| BLBaton LLC | Louisville | KY | — | ◇ UNVERIFIED |
| BVBaxter Vault Company INC | Baxter Springs | KS | — | ◇ UNVERIFIED |
| BCBayshore Concrete | Fort Myers | FL | — | ◇ UNVERIFIED |
| BCB C Concrete | Missoula | MT | — | ◇ UNVERIFIED |
| BHBc Handscapes | Lenexa | KS | — | ◇ UNVERIFIED |
| BCBear Concrete Products, INC | Cullman | AL | — | ◇ UNVERIFIED |
| BBBeavertown Block Co., INC. | East Freedom | PA | — | ◇ UNVERIFIED |
| BBBedrock Block CO. | Orlando | FL | — | ◇ UNVERIFIED |
| BCBedrock Commercial Concrete Cutting, LLC | Portland | OR | — | ◇ UNVERIFIED |
| BBBell Burial Vault Company | Hamilton | OH | — | ◇ UNVERIFIED |
| BCBell Concrete Products INC | Bell | FL | — | ◇ UNVERIFIED |
| BIBellecrete INC | San Fernando | CA | — | ◇ UNVERIFIED |
| BPBelle Plaine Block and Tile INC | Belle Plaine | MN | — | ◇ UNVERIFIED |
| BMBellingham Marine Industries | Dixon | CA | — | ◇ UNVERIFIED |
| BMBellingham Marine Industries INC | Dixon | CA | — | ◇ UNVERIFIED |
| BMBellingham Marine Industries INC. | Oceanside | CA | — | ◇ UNVERIFIED |
| BSBello Stone LLC | Drumore | PA | — | ◇ UNVERIFIED |
| BIBend Inds | West Bend | WI | — | ◇ UNVERIFIED |
| BIBend Industries Appleton | Appleton | WI | — | ◇ UNVERIFIED |
| BRBenedette Roof Tile Company | Kansas City | MO | — | ◇ UNVERIFIED |
| BCBesser Company USA | Alpena | MI | — | ◇ UNVERIFIED |
| BBBest Block - Bridgeton, Mo Plant [earth City] | Bridgeton | MO | — | ◇ UNVERIFIED |
| BBBest Block - Featherlite Converse Plant | Converse | TX | — | ◇ UNVERIFIED |
| BBBest Block/oberfields | Sunbury | OH | — | ◇ UNVERIFIED |
