| BRBleigh Ready Mix CO | Quincy | IL | — | ◇ UNVERIFIED |
| BRBleigh Ready Mix Co-hannibal (b-1) | Hannibal | MO | — | ◇ UNVERIFIED |
| BEBlended Equipment Solutions | Altoona | IA | — | ◇ UNVERIFIED |
| BCBlue Circle Williams Brothers | Athens | GA | — | ◇ UNVERIFIED |
| BBluedot-readi-mix-exchange (plant #104) | Charlotte | NC | — | ◇ UNVERIFIED |
| BBluedot-readi-mix-harrisburg (plant #102) | Harrisburg | NC | — | ◇ UNVERIFIED |
| BBluedot-readi-mix-monroe (plant #105) | Monroe | NC | — | ◇ UNVERIFIED |
| BBluedot-readi-mix-pineville (plant #108) | Charlotte | NC | — | ◇ UNVERIFIED |
| BRBluedot Readi Mix Rock Hill | Rock Hill | SC | — | ◇ UNVERIFIED |
| BBluedot-readi-mix-shelby (plant #106) | Shelby | NC | — | ◇ UNVERIFIED |
| BMBluegrass Materials Marriottsville Quarry | Marriottsville | MD | — | ◇ UNVERIFIED |
| BMBluegrass Materials Rockdale Quarry | Clear Spring | MD | — | ◇ UNVERIFIED |
| BMBluegrass Materials Texas Quarry | Cockeysville | MD | — | ◇ UNVERIFIED |
| BRBlue Ridge Concrete Products, INC. | Cana | VA | — | ◇ UNVERIFIED |
| BRBlue Ridge Concrete Products INC - Hillsville | Cana | VA | — | ◇ UNVERIFIED |
| BSBlue Springs Division of B and B Concrete Company INC | Blue Springs | MS | — | ◇ UNVERIFIED |
| BRBluewing Ready Mix Plant | San Antonio | TX | — | ◇ UNVERIFIED |
| BBluffton #344 | Bluffton | SC | — | ◇ UNVERIFIED |
| BZBlythe Zachry Jv - Batch Plant 2 | Gaffney | SC | — | ◇ UNVERIFIED |
| BCBonded Concrete Pittsfield Plant | Pittsfield | MA | — | ◇ UNVERIFIED |
| B1Boone 1 - Nc Rmc | Boone | NC | — | ◇ UNVERIFIED |
| BRBoone Ready Mix INC | Burlington | KY | — | ◇ UNVERIFIED |
| BRBoone Ready-mix INC | Boone | NC | — | ◇ 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 |
| BIBpi Inc-greenville Pa Plant | Greenville | PA | — | ◇ UNVERIFIED |
| BBBradenton Block 9th St | Bradenton | FL | — | ◇ 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 | Belleville | IL | — | ◇ UNVERIFIED |
| BOBreckenridge of Il | Lebanon | IL | — | ◇ UNVERIFIED |
| BOBreckenridge of Il | Caseyville | 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 |
| 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 |