| SBSnyder Brick and Tile | Snyder | TX | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| SCSoCal Crushing Inc. | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| SBSouthern Brick and Tile Company | Byhalia | MS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| SVSteel Valley Refractories, LLC | Lowellville | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| STSummitville Tiles INC | Summitville | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| TCTexas Clay Plant | Malakoff | TX | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| UIUni-ref INC. | Birmingham | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| UTUsb Tennessee LLC - Gleason | Gleason | TN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| USU. S. Refractories | Hitchins | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| URU.S. Refractory Products, LLC | North Ridgeville | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| VLVanDillion, LLC | Minneapolis | MN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| VAVeitsch-radex America INC | Saint Charles | MO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| VBVermont Brick Manufacturing LP | Highgate | VT | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| VUVesuvius USA | Crown Point | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WCWestern Clay Company- Aurora Bentonite Gypsum Milling Plant | Aurora | UT | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WCWestminster Ceramics L.l.c. | Bakersfield | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WGWienerberger Group (general Shale) | Darlington | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WGWienerberger Group (general Shale) | Atlanta | GA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WGWienerberger Group (general Shale) | Atlanta | GA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WEWizard Enterprise | Hawthorne | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| WRWyg Refractories | East Palestine | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| YBYadkin Brick Company INC | New London | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
