| CSCast Systems LLC | Port Charlotte | FL | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| WIWestern Interlock INC | Rickreall | OR | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| AEAac East LLC | Bennettsville | SC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| ABAbc Block & Brick Company-harrison | Harrison | AR | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| ABAcme Block and Brick, INC. | Jamestown | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| AJAdolph Jandris & Sons INC | Gardner | MA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| ABAir-vol Block | San Luis Obispo | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
American Wilbert Vault Des Plaines | Des Plaines | IL | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| ABAngelus Block - Gardena | Gardena | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| ABAngelus Block - Orange | Orange | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| ABAngelus Block - Tuxford | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| ASAPG - San Martin | San Martin | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| APArtistic Pavers Mfg | Miami | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| BCBasalite - Carson City | Carson City | NV | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| BWBDNB Willamette Graystone | Bend | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| BBBeavertown Block CO | Middleburg | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| BBBilco Brick | Lancaster | TX | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| BCBloques Caribe INC | Guaynabo | PR | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| BCBuilders Concrete/Ashlan | Fresno | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BPBWIP Pavestone | Hagerstown | MD | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| CPCambridge Pavers Lyndhurst | Lyndhurst | NJ | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| CPCambridge Pavers South Amboy | South Amboy | NJ | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| CSCambridge Springs | Cambridge Springs | PA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| CBClayton Block, LLC | Lakewood | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| CPCLTP Pavestone | Charlotte | NC | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| CIConcrete Industries | Albany | GA | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| CSCoronado Stone Products | Carrollton | TX | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| CBCranesville Block Company inc | Albany | NY | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| CPCst Products CORP | Pedricktown | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| CPCVGP Pavestone | Cincinnati | OH | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| DPDALP Pavestone | Grapevine | TX | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| DRDel R Gilbert & Son Block Co., Inc | Laconia | NH | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| DBDominion Block LLC - Lynchburg | Lynchburg | VA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| DPDunham Price INC | Westlake | LA | Nonmetallic Mineral Product Manufacturing327310 | 20-99 | ◐ LIKELY ACTIVE |
| EIEarthcore Industries LLC | Chesapeake | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| EDE Dillon & Company-treatment Plant | Swords Creek | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| EPE P Henry CORP | New Jersey | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| EWEUGB Willamette Graystone | Eugene | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| FCFerraiolo Construction, INC. | Thomaston | ME | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| FBFizzano Bros | Crum Lynne | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| FTFMYP Tremron | Arcadia | FL | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| HCHi-Way Concrete Products Co. Inc. | Wareham | MA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| KPKanta Products | Three Forks | MT | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| KMKast Marble | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| KCKirkpatrick Concrete,inc. Plant 13 | Birmingham | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| LPLASP Pavestone | Las Vegas | NV | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| LBLee Brick & Block | Bowling Green | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| LMLee Masonry Products INC | Lexington | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| LPLowe Precast, INC. | Waco | TX | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| MMMCIB - Midwest Block | Kansas City | MO | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |