| BRBerkeley Ready Mix Concrete | Berkeley | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BPBertelson Precast CORP | Modesto | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| BABest American Mix | Orlando | FL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BBBest Block Co-warren | Warren | MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBest Concrete & Supply | Wyandotte | MI | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Brighton | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete CO Firestien Pit | Greeley | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete - the Shores | Firestone | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BLBestway - Lippman 4800cc 200607115 | Arvada Area | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BWBest Way Marble & Tile CO INC | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BSBetco Supreme INC | Odenton | MD | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BGBevel Granite CO INC | Merrionette Park | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BRBighorn Ready Mix | Greybull | WY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BSBig Spring Plant | Big Spring | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BVBig Valley Concrete - Mill Creek Facility | Mill Creek | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BWBill Willard INC | Northampton | MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBiltmore Cast Stone | Asheville | NC | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BBBirmingport Barge Facility | Mulga | AL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| BOBison Oil Well Cementing-109 N 6th Ave | Greeley | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BLBlack Lab CORP LLC | Serena | IL | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| BLBlalocks Lumber Company Concrete Plant 3 | Seymour | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BEBledsoe Enterprises, INC. ** Inactive ** | Wilmington | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBleigh Ready Mix CO | Quincy | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBleigh Ready Mix Co-hannibal (b-1) | Hannibal | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BEBlended Equipment Solutions | Altoona | IA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BGBlenko Glass CO INC | Milton | WV | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| BWBlock Works, LLC | Dickson | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Gallatin | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Lebanon | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BEBloom Engineering CO Inc/baldwin | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BMBluegrass Materials Marriottsville Quarry | Marriottsville | MD | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| BMBluegrass Materials Rockdale Quarry | Clear Spring | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BMBluegrass Materials Texas Quarry | Cockeysville | MD | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| BRBlue Ridge Concrete Products, INC. | Cana | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBlue Ridge Concrete Products INC - Hillsville | Cana | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BSBlue Springs Division of B and B Concrete Company INC | Blue Springs | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBluewing Ready Mix Plant | San Antonio | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BBluffton #344 | Bluffton | SC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BZBlythe Zachry Jv - Batch Plant 2 | Gaffney | SC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BPBoccella Precast | Winslow Twp | NJ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| BPBoccella Precast LLC | Berlin | NJ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| BCBodin Concrete | Rowlett | TX | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| BIBoehm INC | Ewing | NJ | Nonmetallic Mineral Product Manufacturing327112 | — | ◇ UNVERIFIED |
| BIBollman Industries | San Angelo | TX | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| BCBolton Concrete Products INC. | Johnson City | TN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| BCBonded Concrete Pittsfield Plant | Pittsfield | MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BABonsal American INC | Kenvil | NJ | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| B1Boone 1 - Nc Rmc | Boone | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBoone Ready Mix INC | Burlington | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBoone Ready-mix INC | Boone | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
