| BRBoone Ready-mix INC | Boone | NC | — | ◇ UNVERIFIED |
| BRBoral Roofing LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| BGBowling Green Concrete - Rockfield Ready-mix Plant | Rockfield | KY | — | ◇ UNVERIFIED |
| BMBoxley Materials Co-bluefield Ready Mix Plt | Bluefield | VA | — | ◇ UNVERIFIED |
| BMBoxley Materials Company Roanoke Ready Mix Plant | Roanoke | VA | — | ◇ UNVERIFIED |
| BRBoxley Ready Mix LLC - Martinsville Plant | Martinsville | VA | — | ◇ UNVERIFIED |
| BRBoxley Ready Mix LLC - Wytheville Concrete | Wytheville | VA | — | ◇ UNVERIFIED |
| BRBoxley Ready Mix LLC - Wytheville Concrete Plant | Wytheville | VA | — | ◇ UNVERIFIED |
| BLBoykin Lee Road Batch Plant | Mascotte | FL | — | ◇ UNVERIFIED |
| BBBradbury Burial Vault CO INC | Gloucester Twp | NJ | — | ◇ UNVERIFIED |
| BBBradenton Block 9th St | Bradenton | FL | — | ◇ UNVERIFIED |
| BTBradley Tank & Pipe, LLC | Mcdonald | TN | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix Company | Denver | CO | — | ◇ UNVERIFIED |
| BIBranscome INC - Toano | Toano | VA | — | ◇ UNVERIFIED |
| BCBr Crete Operating LLC - Louisiana Concrete Products | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BCBreck County Ready Mix CO | Hardinsburg | KY | — | ◇ UNVERIFIED |
| BMBreckenridge Material Co-st Louis (plant 6) | Saint Louis | MO | — | ◇ UNVERIFIED |
| BMBreckenridge Materials (mcclay) | Festus | MO | — | ◇ UNVERIFIED |
| BOBreckenridge of Il | Caseyville | IL | — | ◇ UNVERIFIED |
| BOBreckenridge of Il | Lebanon | IL | — | ◇ UNVERIFIED |
| BOBreckenridge of Il | Belleville | IL | — | ◇ UNVERIFIED |
| BOBreckenridge of Illinois LLC | Hamel | IL | — | ◇ UNVERIFIED |
| BQBridgeville Quarry Asphalt Plant | Bridgeville | NY | — | ◇ UNVERIFIED |
| BGBristol Group Precast | Lexington | KY | — | ◇ UNVERIFIED |
| BRBrookshire Rmc Plant | Brookshire | TX | — | ◇ UNVERIFIED |
| BRBrowning Redi-mix Concrete | Beebe | AR | — | ◇ UNVERIFIED |
| BIBrown-wilbert INC. - Jamestown | Jamestown | ND | — | ◇ UNVERIFIED |
| BVBrown-wilbert Vault CO. - De Pere | De Pere | WI | — | ◇ UNVERIFIED |
| BPBrute Properties Concrete Block Plant | Wildwood | FL | — | ◇ UNVERIFIED |
| BFBryan Frank, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| BRBt Redi-mix, INC. | Jackson | TN | — | ◇ UNVERIFIED |
| BSBuddy's Sand and Gravel Plant 1 | Butler | AL | — | ◇ UNVERIFIED |
| BCBuffalo County Redi-mix Plant | No City Name | NE | — | ◇ UNVERIFIED |
| BFBuilder Firstsource | Apex | NC | — | ◇ UNVERIFIED |
| BCBuilders Choice Concrete | Emporia | KS | — | ◇ UNVERIFIED |
| BCBuilders Choice Concrete - Garnett (water) | Garnett | KS | — | ◇ UNVERIFIED |
| BCBuilders Concrete & Supply - Hesston | Hesston | KS | — | ◇ UNVERIFIED |
| BCBuilders Concrete & Supply / Hesston | Hesston | KS | — | ◇ UNVERIFIED |
| BCBuilders Concrete & Supply- Hillsboro | Hillsboro | KS | — | ◇ UNVERIFIED |
| BCBuilders Concrete & Supply INC (air) | Hillsboro | KS | — | ◇ UNVERIFIED |
| BCBuilders Concrete & Supply - Marion | Marion | KS | — | ◇ UNVERIFIED |
| BSBuilders Sand & Cement CO | Silvis | IL | — | ◇ UNVERIFIED |
| BSBuilders Supply Company | Montgomery | AL | — | ◇ UNVERIFIED |
| BSBuilders Supply Company | Cookeville | TN | — | ◇ UNVERIFIED |
| BSBuilders Supply Company | Montgomery | AL | — | ◇ UNVERIFIED |
| BSBuilders Supply Company | Millbrook | AL | — | ◇ UNVERIFIED |
| BBBuilding Blocks, INC | Kissimmee | FL | — | ◇ UNVERIFIED |
| BPBuilding Products CORP | Belleville | IL | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/hartley St Plt | York | PA | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/workrite Masonry Plt | Thomasville | PA | — | ◇ UNVERIFIED |
