| ARAssoc. Ready Mix Concrete | Oxnard | CA | — | ◇ UNVERIFIED |
| ARAstra Readymix LLC | Portable | NE | — | ◇ UNVERIFIED |
| ARAtchison Ready Mix Plant 25 | Atchison | KS | — | ◇ UNVERIFIED |
| ATA Teichert & Son INC | Davis | CA | — | ◇ UNVERIFIED |
| ATA. Teichert & Son, INC. | Davis | CA | — | ◇ UNVERIFIED |
| 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 |
| ACAuburn Concrete | Fairfield | ME | — | ◇ UNVERIFIED |
| ARAudubon Readymix - 149th Street | Olathe | KS | — | ◇ UNVERIFIED |
| ACAugusta Concrete Block | North Augusta | SC | — | ◇ UNVERIFIED |
| ARAurora Ready Mix Plant | Aurora | NE | — | ◇ UNVERIFIED |
| ACAustin Creek Ready Mix INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| AMAuz Materials Company, LLC | Hockley | TX | — | ◇ UNVERIFIED |
| AGAvant Garde | Houston | TX | — | ◇ UNVERIFIED |
| ACAvery Construction (out of Business) | Buena Vista | CO | — | ◇ UNVERIFIED |
| AAvr | Apple Valley | MN | — | ◇ UNVERIFIED |
| AIAvr INC - Apple Valley Plant | Apple Valley | MN | — | ◇ UNVERIFIED |
| ABAzar Block & Brick of South Texas INC | Mcallen | TX | — | ◇ UNVERIFIED |
| AAAzaro Aparicio & Sergio H Aparicio | San Juan | TX | — | ◇ UNVERIFIED |
| AMAztec Material Service CORP | Hodgkins | IL | — | ◇ UNVERIFIED |
| BRBaca Ready Mix of Savannah LLC | Savannah | GA | — | ◇ UNVERIFIED |
| BSBadger Shredding Products INC | Fairmont City | IL | — | ◇ UNVERIFIED |
| BCBaja Contractors INC | Blue Island | IL | — | ◇ UNVERIFIED |
| BCBaja Contractors INC | Chicago | IL | — | ◇ UNVERIFIED |
| BCBaker Concrete Construction INC. | State Wide | GA | — | ◇ UNVERIFIED |
| BRBaker Ready Mix & Building Materials | New Orleans | LA | — | ◇ UNVERIFIED |
| BSBalch Springs | Balch Springs | TX | — | ◇ UNVERIFIED |
| BBalcon | Manassas | VA | — | ◇ UNVERIFIED |
| BBBaldi Bros | China Lake | CA | — | ◇ UNVERIFIED |
| BLBaleydian, LLC | Perris | CA | — | ◇ UNVERIFIED |
| BCBallard Contractors | Warrenton | GA | — | ◇ UNVERIFIED |
| BCBallard Contractors, INC. - Moundville | Moundville | AL | — | ◇ UNVERIFIED |
| BRBallard Ready Mix INC | Anoka | MN | — | ◇ UNVERIFIED |
| BBBall, Ball and Brosamer INC | Denver (portable) | CO | — | ◇ UNVERIFIED |
| BCBall Construction Company LLC | Sault Sainte Marie | MI | — | ◇ UNVERIFIED |
 Baltimore Fabrication | Emigsville | PA | — | ◇ UNVERIFIED |
| BCBama Concrete Birmingham | Birmingham | AL | — | ◇ UNVERIFIED |
| BCBama Concrete Birmingham Hoover Plant | Birmingham | AL | — | ◇ UNVERIFIED |
| BCBama Concrete - Linden Temporary Plant | Linden | AL | — | ◇ UNVERIFIED |
| BCBama Concrete - Somerville Plant | Somerville | AL | — | ◇ UNVERIFIED |
| BAB and B Concrete Company Inc, Alcorn Ready Mix, Biggersville | Rienzi | MS | — | ◇ UNVERIFIED |
| BAB and B Concrete Company Inc, Ripley | Ripley | MS | — | ◇ UNVERIFIED |
| BCBandon Concrete and Development | Bandon | OR | — | ◇ UNVERIFIED |
| BBBangert Bros Const (deleted 2/1/90) | Unknown | CO | — | ◇ UNVERIFIED |
| BBBangert Brothers (millstone Bangert)-bussen Road Plant | Saint Louis | MO | — | ◇ UNVERIFIED |
| BBBarboursville Block Manufacturing Company | Huntington | WV | — | ◇ UNVERIFIED |
