| RPResco Products, INC. | Moulton | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| SDSintertec Div of Bpi INC - Muskogee Cnty Plant | Muskogee | OK | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ATAmerican Technical Ceramics | Huntington Station | NY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CICertech INC | Wood Ridge | NJ | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GCGlen-gery CORP | Marseilles | IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| OVOld Va. Brick | Salem | VA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| PPermatech | Graham | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| VUVesuvius USA Corporation | Dillon | SC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ASA-1 Superior INC | Odessa | FL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ABAcme Brick CO | Jamestown | LA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ABAcme Brick CO Weir | Weir | KS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ABAcme Brick - Kanopolis | Kanopolis | KS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| APAcme-ochs Plant | Springfield | MN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| AIAdvanced Industries International Former | Haskell | NJ | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| AGA.p. Green Refactories INC. | Gary | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| AGA.p. Green Refractories INC. | Middletown | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| APA P Green Refractories INC Sproul Pa Plant | Sproul | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ABAtkinson Brick CO | Perris | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ABAtkinson Brick Company | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| AIAwmco INC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BCBartley Crucible & Refractories INC | Trenton | NJ | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BBBelden Brick Plant 9 (0679005019) | Sugarcreek | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BEBloom Engineering CO Inc/baldwin | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BBBoral Bricks | Phenix City | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BBBoral Bricks INC | Macon | MS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BBBoral Bricks INC Augusta Plant 6 | Augusta | GA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BBBoral Bricks Inc:lexington | Lexington | SC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BBBoral Bricks:van Wyck | Van Wyck | SC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BCBoren Clay Products Company | Monroe | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BCBoren Clay Products - Roseboro | Roseboro | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BTBrick & Tile CORP Plant 1 | Lawrenceville | VA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CUCalderys Usa, INC. (formerly Spar Inc) | Jacksonville | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CCCastaic Clay Manufacturing Company Incorporated | Castaic | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CHCedar Heights Clay CO (0640010010) | Oak Hill | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CSCherokee Sanford Group INC | Sanford | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CSCherokee Sanford Group L L C Lee County | Sanford | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CCChesterfield County Clay Pit | Chesterfield | SC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CNClayburn - New Savage Works | Grantsville | MD | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CCClover Creek Brick CO | Cloverport | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CBColonial Brick Corporation | Cayuga | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CMCore Metals Group LLC (mpm Facility) | Aurora | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CRCorhart Refractories | Louisville | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CBCunningham Brick Company INC. | Thomasville | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CBCunningham Brick Company Incorporated | Kings Mountain | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DCDal-tile CORP | Lewisport | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DCDal-tile CORP Bendersville Plant | Bendersville | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DCDal-tile CORP Jackson Mfg | Jackson | TN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DCDal-tile Corporation | Olean | NY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DCDeleo Clay Tile CO INC | Lake Elsinore | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DCDfc Ceramics | Canon City | CO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
