| SRSoil Retention Products INC | Perris | CA | 20–99 | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Products Columbia | Columbia | SC | 1–19 | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Products Upstate LLC | Simpsonville | SC | 1–19 | ◐ LIKELY ACTIVE |
| SCSouthern Concrete Products of Lexington | Lexington | TN | 1–19 | ◐ LIKELY ACTIVE |
| SCStabil Concrete Products, LLC | Sarasota | FL | — | ◐ LIKELY ACTIVE |
| SPSTLP Pavestone | Scott City | MO | 20–99 | ◐ LIKELY ACTIVE |
| TBThe Bauer Company INC. | Worthington | PA | 20–99 | ◐ LIKELY ACTIVE |
| TBTri-county Block & Brick INC | Swanton | OH | 20–99 | ◐ LIKELY ACTIVE |
| TATUSB Arizona Best Block | Tucson | AZ | 1–19 | ◐ LIKELY ACTIVE |
| UCUnilock Chicago | Aurora | IL | 100–499 | ◐ LIKELY ACTIVE |
| UMUnilock Marengo | Marengo | IL | 20–99 | ◐ LIKELY ACTIVE |
| UNUnilock New York, Inc. | Brewster | NY | 20–99 | ◐ LIKELY ACTIVE |
| UBUtility Block | Albuquerque | NM | 20–99 | ◐ LIKELY ACTIVE |
| VGVBC Group LLC | Spring Lake | MI | 20–99 | ◐ LIKELY ACTIVE |
| WGWillamette Graystone - Salem | Salem | OR | 1–19 | ◐ LIKELY ACTIVE |
| JCJohnson Concrete Products CO. | Hastings | NE | — | ◐ LIKELY ACTIVE |
| AAAdams an Oldcastle Co-asheville | Asheville | NC | — | ◇ UNVERIFIED |
| AAAdams an Oldcastle Co-colfax | Colfax | NC | — | ◇ UNVERIFIED |
| AAAdams an Oldcastle CO Greensboro | Greensboro | NC | — | ◇ UNVERIFIED |
| AAAdams an Oldcastle Company | Castle Hayne | NC | — | ◇ UNVERIFIED |
| AAAdams an Oldcastle Company - Greenville Sc | Greenville | SC | — | ◇ UNVERIFIED |
| AAAdams an Oldcastle Company - Morrisville | Morrisville | NC | — | ◇ UNVERIFIED |
| APAdams Products - Concrete Block Plant | Dunn | NC | — | ◇ UNVERIFIED |
| AMAmcor Masonry Products | North Salt Lake | UT | — | ◇ UNVERIFIED |
| ABAnchor Block CO - South Plant | Shakopee | MN | — | ◇ UNVERIFIED |
| ACAnchor Concrete Prods | Farmingdale | NJ | — | ◇ UNVERIFIED |
| ACAnchor Concrete Prods. | Brick | NJ | — | ◇ UNVERIFIED |
| ACAnchor Concrete Prods. | Lyndhurst | NJ | — | ◇ UNVERIFIED |
| AHAnchor Holbrook | Holbrook | MA | — | ◇ UNVERIFIED |
| AMApg Mid-atlantic - Winchester | Winchester | VA | — | ◇ UNVERIFIED |
| BBBasalite Block | Tracy | CA | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Meridian | ID | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Dupont | WA | — | ◇ UNVERIFIED |
| BCBasalite Concrete Solutions LLC | Fort Lupton | CO | — | ◇ UNVERIFIED |
| BBBelden Brick CO Plant 6 | Sugarcreek | OH | — | ◇ UNVERIFIED |
| BBBelden Brick CO Plant 8 | Sugarcreek | OH | — | ◇ UNVERIFIED |
| BBBest Block - Bridgeton/st. Louis Mo Plant | Bridgeton | MO | — | ◇ UNVERIFIED |
| BBBest Block - Carder Road Block Plant | Orlando | FL | — | ◇ UNVERIFIED |
| BBBest Block Converse Plant | Converse | TX | — | ◇ UNVERIFIED |
| BBBest Block - Coolidge, Az Plant | Coolidge | AZ | — | ◇ UNVERIFIED |
| BBBest Block - Cordele, Ga Block Plant | Cordele | GA | — | ◇ UNVERIFIED |
| BBBest Block - Georgia Plant | Fairburn | GA | — | ◇ UNVERIFIED |
| BBBest Block - Jefferson City Plant | Jefferson City | MO | — | ◇ UNVERIFIED |
| BBBest Block LLC - Southland Block | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BBBest Block - Oakland/memphis Plant | Oakland | TN | — | ◇ UNVERIFIED |
| BBBest Block - Paducah, Ky Plant | Paducah | KY | — | ◇ UNVERIFIED |
| BBBest Block - Phoenix, Az Block Plant [quality Bloc | Phoenix | AZ | — | ◇ UNVERIFIED |
| BBBest Block - Springdale, Ar Plant | Springdale | AR | — | ◇ UNVERIFIED |
| BBBest Block - Springfield, Mo Plant | Springfield | MO | — | ◇ UNVERIFIED |
| BBBest Block - Tallahassee Block Plant | Tallahassee | FL | — | ◇ UNVERIFIED |