 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 |
| BLBlockworks, LLC | Lebanon | TN | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Gallatin | 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 |
| BPBoccella Precast | Winslow Twp | NJ | — | ◇ UNVERIFIED |
| BCBolton Concrete Products INC. | Johnson City | TN | — | ◇ 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 | Saint Paul | MN | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC | Esko | MN | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC | Mankato | MN | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC - Lakeville | Lakeville | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO. | Milwaukee | WI | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO - Austin | Austin | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO. - De Pere | De Pere | WI | — | ◇ 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 |
| BVBrown-wilbert Vault CO - Morris | Morris | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO - Redwood Falls | Redwood Falls | MN | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO - St Cloud | Saint Cloud | MN | — | ◇ UNVERIFIED |
| BPBrute Properties Concrete Block Plant | Wildwood | FL | — | ◇ UNVERIFIED |
| BHBryce Hill, INC | Saint Paris | OH | — | ◇ UNVERIFIED |
| BSBuck Simmons Vault Service, INC | Roanoke | VA | — | ◇ UNVERIFIED |
| BABuild America | Sedalia | CO | — | ◇ UNVERIFIED |
| BCBuilders Concrete | Clovis | CA | — | ◇ UNVERIFIED |
| BCBuilders Concrete INC. | Merced | CA | — | ◇ UNVERIFIED |
| BSBuilders Supply Company of Cookeville | Cookeville | TN | — | ◇ UNVERIFIED |
| BBBuilding Blocks | Merritt Island | FL | — | ◇ UNVERIFIED |
| BBBuilding Blocks, INC | Kissimmee | FL | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/hartley St Plt | York | PA | — | ◇ UNVERIFIED |
| BPBullseye Products International, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| BIBurlingame Indust. INC Dba Eagle Roofing Products | Rialto | CA | — | ◇ UNVERIFIED |
| BWBurlington Wilbert Vault Works, INC. | Burlington | IA | — | ◇ UNVERIFIED |
| BCBurnco Colorado - East Greeley Plant | Kersey | CO | — | ◇ UNVERIFIED |
| BMBurn's Monument Company | Perry | FL | — | ◇ UNVERIFIED |
| BTBurrell Tri Cnty Vaults INC | Ypsilanti | MI | — | ◇ UNVERIFIED |
| BCBush Concrete Products INC | Muskegon | MI | — | ◇ UNVERIFIED |
| CFC3 Foam & Precast Inc | Orlando | FL | — | ◇ UNVERIFIED |
| CCCajun Crete LLC | Minden | LA | — | ◇ UNVERIFIED |
| CICaledonia INC. | Waterford | VT | — | ◇ UNVERIFIED |
| CCCaliber Cast Stone | O Fallon | MO | — | ◇ UNVERIFIED |
| COCalmat of Fresno | Fresno | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | Galt | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | Tracy | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | San Martin | CA | — | ◇ UNVERIFIED |
| CCCalstone Company | Sunnyvale | CA | — | ◇ UNVERIFIED |
| CCCalstone Company Dba Mission Concrete Products | Gilroy | CA | — | ◇ UNVERIFIED |
| CTCalstone Tracy-oldcastle Apg | Tracy | CA | — | ◇ UNVERIFIED |
| CICampania Intl Inc/pennsburg | Pennsburg | PA | — | ◇ UNVERIFIED |
| CBCantelli Block & Brick | Huron | OH | — | ◇ UNVERIFIED |
| CSCanyon Stone | Lenexa | KS | — | ◇ UNVERIFIED |
| CCapa | Penitas | TX | — | ◇ UNVERIFIED |
| CFCape Fear Precast, LLC | Wilmington | NC | — | ◇ UNVERIFIED |
| CFCape Fear Precast, LLC | Jacksonville | NC | — | ◇ UNVERIFIED |
| CCCapital Cast Stone Inc. | Lebanon | IN | — | ◇ UNVERIFIED |
| CPCapital Precast | San Marcos | TX | — | ◇ UNVERIFIED |
| CRCapital Ready Mix INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| CCCapitol Concrete Products | Topeka | KS | — | ◇ UNVERIFIED |
| CCCarder Concrete Plt No 2 | Arvada | CO | — | ◇ UNVERIFIED |
| CCCaribbean Cast Stone INC | Toa Alta | PR | — | ◇ UNVERIFIED |
| CCCarlson Concrete Products INC | Duluth | MN | — | ◇ UNVERIFIED |
| CCCarolina Cast Stone Company Incorporated | Greensboro | NC | — | ◇ UNVERIFIED |
| CECarolina East Enterprises, Inc | Enfield | NC | — | ◇ UNVERIFIED |
| CCCarr Concrete a Division of Cxt Incorporated | Williamstown | WV | — | ◇ UNVERIFIED |
| CPCarr Precast Concrete, INC. | Dunn | NC | — | ◇ UNVERIFIED |
| CCCascade Const- Alliance Ready Mix | Delta Area | CO | — | ◇ UNVERIFIED |
| CICastcrete Incorporated | Somerset | MA | — | ◇ UNVERIFIED |
| CFCast Fireplaces | Houston | TX | — | ◇ UNVERIFIED |
| CBCastlelite Block LLC | Dixon | CA | — | ◇ UNVERIFIED |
| CRCastle Rock Precast LLC | Pleasant Grove | UT | — | ◇ UNVERIFIED |
| CCCastone Corporation | Opelika | AL | — | ◇ UNVERIFIED |
| CCCates Caststone Company, INC. | Whitehouse | TX | — | ◇ UNVERIFIED |
