| LTLALP Tremron | Lakeland | FL | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| LPLansing Products | Lansing | MI | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| LCLens Concrete Services | Jonestown | PA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| LCLgap Cst | Montgomery | NY | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MCMarathon - CMC | Marathon | WI | Nonmetallic Mineral Product Manufacturing327320 | 100-499 | ◐ LIKELY ACTIVE |
| MMMASQ Masonry | Atlanta | GA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| MGMCNB Georgia Best Block | Cordele | GA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| MMMEMB - Midwest Block | Oakland | TN | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MWMFRD Willamette Graystone | Grants Pass | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| MHMidland Hiawatha | Hiawatha | IA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MPMidstates Precast Products | Bondurant | IA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MCMinnick Concrete Service | Fort Wayne | IN | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MBMontfort Bros Inc | Fishkill | NY | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MMMWBQ - Midwest Block | Jefferson City | MO | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| NCNatural Concrete Products - PA location | East Butler | PA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| NINet-zeros Infra-materials INC. | Louisville | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| OPOceanside Plant | Oceanside | CA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| OOlympia | Tumwater | WA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| OOrlando | Orlando | FL | Food Manufacturing311520 | 20-99 | ◐ LIKELY ACTIVE |
| OFORLB Florida Best Block | Orlando | FL | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| OWOTHD Willamette Graystone | North Bend | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| PBPalm Beach Cast Stone, Inc | Mangonia Park | FL | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PBPalumbo Block Co., Inc. | Dover Plains | NY | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PBParker Block | Millsboro | DE | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PFParker Ford | Parker Ford | PA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| PPPaver Plant | Riverside | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PWPDXD Willamette Graystone | Tualatin | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| PWPDXP Willamette Graystone | Wood Village | OR | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PAPen Argyl Plant | Pen Argyl | PA | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| PCPermier Concrete Products | Denham Springs | LA | Nonmetallic Mineral Product Manufacturing327331 | 100-499 | ◐ LIKELY ACTIVE |
| PCPerris, CA | Perris | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PLPhillipsrtg LLC | Clinton | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| PCPhlp Cst | Pedricktown | NJ | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| PAPHXD Arizona Best Block | Phoenix | AZ | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| PPPinnacle Precast LLC | Conway | SC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| P2Plant 2 | Sugarcreek | OH | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| P3Plant 3 | Sugarcreek | OH | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| P4Plant 4 | Sugarcreek | OH | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| P5Plant 5 | Sugarcreek | OH | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PCPrecast Concrete Concepts, LLC | Lewisville | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| PCPremier Concrete Products INC | Baton Rouge | LA | Nonmetallic Mineral Product Manufacturing327331 | — | ◐ LIKELY ACTIVE |
| RCRahns Construction Materials Company | Rahns | PA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| RRRedi Rock Structures of OKI | Milford | OH | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| RRehoboth | Rehoboth | MA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| RWRGBD Willaette Graystone | Roseburg | OR | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| RBRhodes Brick & Block Inc | St Albans | WV | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| RBRhodes Brick & Block Inc | Saint Albans | WV | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| RCRialto, CA | Rialto | CA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| RPRICP Pavestone | Doswell | VA | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| RPRiverside Plant | Riverside | CA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |