| GIGrand Isle Shipyard INC - Training Facility & Main Office | Galliano | LA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| WRWestlake Royal Stone LLC | Chester | SC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BSBuilders Supply Company | Algood | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NCNorthern Concrete Block of Cortland | Cortland | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| PSPrecast Solutions, INC. | Browns Summit | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| TSThe Shaddix Company, INC. | Cullman | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABA-1 Block Corporation - Tampa Facility | Tampa | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAbc Block CO | Russellville | AR | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAcme Block & Brick, INC. | Sweetwater | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| APAdams Products CO - Fayetteville | Fayetteville | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAkron Brick & Block Inc.-akron Brick and Block INC. | Akron | OH | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAlley-cassetty Brick & Block Company | Murfreesboro | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACAllied - Charlottesville | Charlottesville | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ACAllied Concrete - 2025 Harrisonburg | Harrisonburg | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ACAllied Concrete Company - Zion | Troy | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ACAllied Concrete - Culpeper | Culpeper | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AGAllied - Greene | Ruckersville | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ALAllied - Louisa | Mineral | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ARAllied Ready Mix CO - Staunton | Staunton | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ARAllied Ready Mix CO - Wanesboro | Waynesboro | VA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ARAllied -ready Rock | Waynesboro | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACAllison Concrete Products, INC. | Stanberry | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACAmcon Concrete Products LLC - Saint Cloud | St. Cloud | MN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACAmerican Concrete Products Ms Inc, Hattiesburg Plant | Hattiesburg | MS | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
 American Wilbert Vault CORP | Chicago | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACAnchor Concrete Prods. | Phillipsburg | NJ | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACAnchor Concrete Products | Gainesville | VA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Fontana | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block Company | Oxnard | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ACArrow Concrete Products, INC | Milford | CT | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BSBarrasso & Sons INC | Islip Terrace | NY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Denver | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBenea Block Corporation | Kingston | MA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBest Block Co-warren | Warren | MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BSBetco Supreme INC | Odenton | MD | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BOBison Oil Well Cementing-109 N 6th Ave | Greeley | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BWBlock Works, LLC | Dickson | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Lebanon | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BLBlockworks, LLC | Gallatin | TN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BPBrute Properties Concrete Block Plant | Wildwood | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BSBuilders Supply Company | Montgomery | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBBuilding Blocks, INC | Kissimmee | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/hartley St Plt | York | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/workrite Masonry Plt | Thomasville | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCalstone Company | San Martin | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CBCantelli Block & Brick | Huron | OH | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCapitol Concrete Products | Topeka | KS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CICement Industries INC | Fort Myers | FL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Atlantic L | Hendersonville | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
