| BABetteroads Asphalt Corporation Planta 10 | Manati | PR | — | ◇ UNVERIFIED |
| BDBetz Dearborn INC | Ellicott City | MD | — | ◇ UNVERIFIED |
| BLBetz Labs INC Horsham | Horsham | PA | — | ◇ UNVERIFIED |
| BIBickes, INC. | Jackson | MS | — | ◇ UNVERIFIED |
| BIBickes, INC. | Lawrenceburg | TN | — | ◇ UNVERIFIED |
| BIBickes, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| BIBickes INC D/b/a Jackson Wilbert Burial Vault CO | Jackson | TN | — | ◇ UNVERIFIED |
| BIBickes, INC. Dba Wilbert Burial Vault Company | Fort Branch | IN | — | ◇ UNVERIFIED |
| BBBig & Bald Concrete LLC | Bradenton | FL | — | ◇ UNVERIFIED |
| BDBig D Concrete INC | Dallas | TX | — | ◇ UNVERIFIED |
| BHBig Horn Redi Mix | Cody | WY | — | ◇ UNVERIFIED |
| BHBig Horn Redi Mix | Thermopolis | WY | — | ◇ UNVERIFIED |
| BHBig Horn Redi Mix | Powell | WY | — | ◇ UNVERIFIED |
| BRBig Rock Manufacturing INC | Honolulu | HI | — | ◇ UNVERIFIED |
| BNBilly Nguyen | Garden Grove | CA | — | ◇ UNVERIFIED |
| BBBinghamton Burial Vault Co., INC. | Binghamton | NY | — | ◇ UNVERIFIED |
 Binghamton Precast & Supply CORP. | Binghamton | NY | — | ◇ UNVERIFIED |
| BIBiocellection INC | Menlo Park | CA | — | ◇ UNVERIFIED |
| BIBiocellection INC | Menlo Park | CA | — | ◇ UNVERIFIED |
| BNBiochar Now | Berthoud | CO | — | ◇ UNVERIFIED |
| BTBioconjugate Technologies, LLC | Scottsdale | AZ | — | ◇ UNVERIFIED |
| BSBiocontrol Systems INC | Bellevue | WA | — | ◇ UNVERIFIED |
| BBiocube/ionobell | San Jose | CA | — | ◇ UNVERIFIED |
| BCBiofriendly Corporation | Lincoln | CA | — | ◇ UNVERIFIED |
| BMBiofuels Manufactureres of Illinois LLC | Mapleton | IL | — | ◇ UNVERIFIED |
| BBiopyure | Arvada | CO | — | ◇ UNVERIFIED |
| BBio-rad | Hercules | CA | — | ◇ UNVERIFIED |
 Bio-rad Laboratories, INC | Hercules | CA | — | ◇ UNVERIFIED |
| BBioscreen | Guntersville | AL | — | ◇ UNVERIFIED |
| BCBiosphere Carbon Group LLC | Prineville | OR | — | ◇ UNVERIFIED |
| BSBiotechnology Solutions TX, LLC | Houston | TX | — | ◇ UNVERIFIED |
| BIBiotheryx INC | San Diego | CA | — | ◇ UNVERIFIED |
| BIBiotheryx INC | San Diego | CA | — | ◇ UNVERIFIED |
| BBioveritas | Bryan | TX | — | ◇ UNVERIFIED |
| BSBj Services Unichem Div | Hobbs | NM | — | ◇ UNVERIFIED |
| BCB-k Concrete | Warrenville | IL | — | ◇ UNVERIFIED |
| BCBlachford CORP | Frankfort | IL | — | ◇ UNVERIFIED |
| BBBlack Building Enterprises Dba Exposhows INC | Mojave | CA | — | ◇ UNVERIFIED |
| BGBlack Gunite, INC. | Saint Joseph | MO | — | ◇ UNVERIFIED |
| BBBlackhawk Biodiesel | Freeport | IL | — | ◇ UNVERIFIED |
| BCBlackJack Concrete LLC | Tyrone | GA | — | ◇ UNVERIFIED |
| BCBlager Concrete Company | Clinton | IL | — | ◇ UNVERIFIED |
| BWBlairsville Wilbert Vault Company | Mount Pleasant | PA | — | ◇ UNVERIFIED |
| BPBlakeslee Prestress, INC. | East Boston | MA | — | ◇ UNVERIFIED |
| BRBlanco Road Ready Mix Plant | San Antonio | TX | — | ◇ UNVERIFIED |
| BIBlank Industries LLC | Hudson | MA | — | ◇ UNVERIFIED |
| BHB'laster Holdings | Indian Trail | NC | — | ◇ UNVERIFIED |
| BCBledsoe Concrete Foundation Specialist, INC. | Wilmington | NC | — | ◇ UNVERIFIED |
| BMBlitz Manufacturing Company of Indiana | Jeffersonville | IN | — | ◇ UNVERIFIED |
| BBBlomberg Bros INC | Farina | IL | — | ◇ UNVERIFIED |
| BRBlt Ready Mix, INC. | Hazen | NV | — | ◇ UNVERIFIED |
| BCBlue Circle Williams Brothers | Winder | GA | — | ◇ UNVERIFIED |
| BCBlue Circle Williams Brothers | Perry | GA | — | ◇ UNVERIFIED |
| BDBlue Daisy Cement Prod. INC | Gardena | CA | — | ◇ UNVERIFIED |
| BDBlue Dot Readi-mix, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| BDBlue Dot Readi-mix, LLC - Albemarle | Albemarle | NC | — | ◇ UNVERIFIED |
| BRBluedot Ready Mix-albemarle (plant #109) | Albemarle | NC | — | ◇ UNVERIFIED |
| BRBluedot Ready Mix-duncan (plant #111) | Duncan | SC | — | ◇ UNVERIFIED |
| BRBluedot Ready Mix-simpsonville (plant #110) | Simpsonville | SC | — | ◇ UNVERIFIED |
 Blue Grass Chemical Specialties | Cypress | TX | — | ◇ UNVERIFIED |
| BLBlue Level Construction Consulting LLC | North Las Vegas | NV | — | ◇ UNVERIFIED |
| BMBlue Magic Products | Stockton | CA | — | ◇ UNVERIFIED |
| BRBlue Ribbon Teechnology Midland | Midland | TX | — | ◇ UNVERIFIED |
| BRBlue Ridge Cbp | Blue Ridge | TX | — | ◇ UNVERIFIED |
| BRBlue Ridge Concrete Products, INC. | Hillsville | VA | — | ◇ UNVERIFIED |
| BSBlue Star Ready Mix Corporation | Noblesville | IN | — | ◇ UNVERIFIED |
| BBBluffdale Batch Plant | Riverton | UT | — | ◇ UNVERIFIED |
| BCBmh Concrete, INC. | West Palm Beach | FL | — | ◇ UNVERIFIED |
| BPBmi Products of Northern Il INC | Antioch | IL | — | ◇ UNVERIFIED |
| BBBob Barnett Ready-mix | Harrisburg | IL | — | ◇ UNVERIFIED |
| BBBob Barnett Ready Mix INC | Carmi | IL | — | ◇ UNVERIFIED |
| BBBob Barnett Ready-mix INC | Equality | IL | — | ◇ UNVERIFIED |
| BHBobby Hamby Concrete Co., INC. | Wilkesboro | NC | — | ◇ UNVERIFIED |
| BCBob's Concrete | Placeholder | CA | — | ◇ UNVERIFIED |
| BGBode Gravel CO | San Francisco | CA | — | ◇ UNVERIFIED |
| BPBode's Precast | Mount Vernon | WA | — | ◇ UNVERIFIED |
| BPBode's Precast | Everson | WA | — | ◇ UNVERIFIED |
| BSBoerne Site | Boerne | TX | — | ◇ UNVERIFIED |
| BBogota | Bogota | NJ | — | ◇ UNVERIFIED |
| BPBohringer Portable Concrete P | Cheyenne | WY | — | ◇ UNVERIFIED |
| BQBolingbrook Quality Mix | Bolingbrook | IL | — | ◇ UNVERIFIED |
| BMBonded Materials Company Dba Bomat, LTD | Kailua Kona | HI | — | ◇ UNVERIFIED |
| BMBonded Materials Company Manufacturing Center | Kapolei | HI | — | ◇ UNVERIFIED |
| BCBoone County Concrete, INC. | Albion | NE | — | ◇ UNVERIFIED |
| BRBoral Roofing LLC | Gilroy | CA | — | ◇ UNVERIFIED |
| BRBoral Roofing, LLC | Rialto | CA | — | ◇ UNVERIFIED |
| BRBoral Roofing, LLC. | Pompano Beach | FL | — | ◇ UNVERIFIED |
| BCBoston Concrete CORP | Lowell | MA | — | ◇ UNVERIFIED |
| BSBoston Sand & Gravel Company | Boston | MA | — | ◇ UNVERIFIED |
| BSBoston Sand & Gravel Company | Charlestown | MA | — | ◇ UNVERIFIED |
| BBradyifs | Las Vegas | NV | — | ◇ UNVERIFIED |
| BIBrandenburg Industrial Service CO | Macomb | IL | — | ◇ UNVERIFIED |
| BCBrandt Construction CO | Colona | IL | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix Company | Rifle | CO | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix West Plant | Denver | CO | — | ◇ UNVERIFIED |
| BWBrannan West Plant | Denver | CO | — | ◇ UNVERIFIED |
| BMBreckenridge Material Co-mattis Road Plant | Saint Louis | MO | — | ◇ UNVERIFIED |
| BMBreckenridge Material Co-st Louis (plant 7) | Saint Louis | MO | — | ◇ UNVERIFIED |
| BMBreckenridge Materials-jeffco Plant | Arnold | MO | — | ◇ UNVERIFIED |
| BOBreckenridge of Il | Madison | IL | — | ◇ UNVERIFIED |
