| BBBelden Brick CO Plant 8 | Sugarcreek | OH | — | ◇ UNVERIFIED |
| BSBellevue Sand & Gravel | Bellevue | IA | — | ◇ UNVERIFIED |
| BBBest Block - Bridgeton/st. Louis Mo Plant | Bridgeton | MO | — | ◇ UNVERIFIED |
| BBBest Block - Carder Road Block Plant | Orlando | FL | — | ◇ UNVERIFIED |
| BBBest Block Converse Plant | Converse | TX | — | ◇ UNVERIFIED |
| BBBest Block - Coolidge, Az Plant | Coolidge | AZ | — | ◇ UNVERIFIED |
| BBBest Block - Cordele, Ga Block Plant | Cordele | GA | — | ◇ UNVERIFIED |
| BBBest Block - Georgia Plant | Fairburn | GA | — | ◇ UNVERIFIED |
| BBBest Block - Jefferson City Plant | Jefferson City | MO | — | ◇ UNVERIFIED |
| BBBest Block LLC - Southland Block | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BBBest Block - Oakland/memphis Plant | Oakland | TN | — | ◇ UNVERIFIED |
| BBBest Block - Paducah, Ky Plant | Paducah | KY | — | ◇ UNVERIFIED |
| BBBest Block - Phoenix, Az Block Plant [quality Bloc | Phoenix | AZ | — | ◇ UNVERIFIED |
| BBBest Block - South Plant | Pueblo | CO | — | ◇ UNVERIFIED |
| BBBest Block - Springdale, Ar Plant | Springdale | AR | — | ◇ UNVERIFIED |
| BBBest Block - Springfield, Mo Plant | Springfield | MO | — | ◇ UNVERIFIED |
| BBBest Block - Tallahassee Block Plant | Tallahassee | FL | — | ◇ UNVERIFIED |
| BBBest Block - Tucson, Az Plant | Tucson | AZ | — | ◇ UNVERIFIED |
| BBBest Block - Tulsa Plant | Tulsa | OK | — | ◇ UNVERIFIED |
| BBBest Block - University Block Plant | Jacksonville | FL | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Ft Lupton | Fort Lupton | CO | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Jeffco | Golden | CO | — | ◇ UNVERIFIED |
| BCBestway Concrete Co-longmont | Longmont | CO | — | ◇ UNVERIFIED |
| BCBestway Concrete CO Titan Plant | Littleton | CO | — | ◇ UNVERIFIED |
| BCBestway Concrete CO Windsor | Windsor | CO | — | ◇ UNVERIFIED |
| BEB E T Er Mix INC | Brooksville | FL | — | ◇ UNVERIFIED |
| BEB E T Er Mix INC | Hudson | FL | — | ◇ UNVERIFIED |
| BRBig Rock Building Products | Rockwood | TN | — | ◇ UNVERIFIED |
| BBBixby Batch Plant | Bixby | OK | — | ◇ UNVERIFIED |
| BUBlock USA Alabama Florence Plant | Florence | AL | — | ◇ UNVERIFIED |
| BUBlock USA Theodore | Theodore | AL | — | ◇ 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 |
| BBluedot-readi-mix-shelby (plant #106) | Shelby | NC | — | ◇ UNVERIFIED |
| BRBluewing Ready Mix Plant | San Antonio | TX | — | ◇ UNVERIFIED |
| BABonsal American INC | Bristol | PA | — | ◇ UNVERIFIED |
| BBBoral Best Block North Plant | Littleton | CO | — | ◇ UNVERIFIED |
| BCBoral Construction Materials Reno Plant | Oklahoma City | OK | — | ◇ UNVERIFIED |
| BRBoral Roofing | French Camp | CA | — | ◇ UNVERIFIED |
| BRBoral Roofing LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| BRBoral Roofing LLC | Henderson | NV | — | ◇ UNVERIFIED |
| BSBoro Sand & Stone CORP | North Attleboro | MA | — | ◇ UNVERIFIED |
| BSBoston Sand and Gravel Plant & Garage | Charlestown | MA | — | ◇ UNVERIFIED |
| BBBradenton Block 9th St | Bradenton | FL | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix - South Ready Mix | Englewood | CO | — | ◇ UNVERIFIED |
| BTBrewster Transit Ready Mix | Brewster | NY | — | ◇ UNVERIFIED |
| BPBrockport Plant | Brockport | NY | — | ◇ UNVERIFIED |
| BRBrookshire Rmc Plant | Brookshire | TX | — | ◇ UNVERIFIED |
