| CBCommercial Brick | Wewoka | OK | — | ◇ UNVERIFIED |
| CBContinental Brick - Martinsburg Facility | Martinsburg | WV | — | ◇ UNVERIFIED |
| CICormetech, INC. | Durham | NC | — | ◇ UNVERIFIED |
| DCDal-tile CORP Lincolnway East Plant | Gettysburg | PA | — | ◇ UNVERIFIED |
| DTDal Tile International | El Paso | TX | — | ◇ UNVERIFIED |
| DIDresser Industries INC Harbison-walker Refractories | Fairfield | AL | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick, INC. | Blue Ridge | VA | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick, INC. - Dba Michigan Brick (a6497) | Corunna | MI | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick, INC. (harbin Mine) | Rome | GA | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick INC Moncure Facility Plants 24 & 25 | Moncure | NC | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick - Plant 42 | Spring City | TN | — | ◇ UNVERIFIED |
| GSGeneral Shale - Denver Brick Plant #60 | Denver | CO | — | ◇ UNVERIFIED |
| GCGlen-gery CORP | Galion | OH | — | ◇ UNVERIFIED |
| GCGlen-gery CORP Mid Atlantic Plant | Shoemakersville | PA | — | ◇ UNVERIFIED |
| GGGlen Gery Corporation Hanley Plant | Summerville | PA | — | ◇ UNVERIFIED |
| HBHanson Brick Columbia Plant | Columbia | SC | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC - Athens Plant | Athens | TX | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC - Mineral Wells East Plant | Mineral Wells | TX | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC - Mineral Wells West Plant | Mineral Wells | TX | — | ◇ UNVERIFIED |
| HBHanson Brick Stanton Plant | Stanton | KY | — | ◇ UNVERIFIED |
| HWHarbison Walker Refractories Company Vandalia Plant | Vandalia | MO | — | ◇ UNVERIFIED |
| HWHarbison Walker Refractories Plant | Windham | OH | — | ◇ UNVERIFIED |
| HBHenry Brick Company, INC. | Selma | AL | — | ◇ UNVERIFIED |
| IBInterstate Brick Company: Brick Manufacturing Plant | West Jordan | UT | — | ◇ UNVERIFIED |
| JBJenkins Brick Company | Leeds | AL | — | ◇ UNVERIFIED |
| JBJenkins Brick Company | Montgomery | AL | — | ◇ UNVERIFIED |
| JIJustin Industries | Millsap | TX | — | ◇ UNVERIFIED |
| KBKentwood Brick & Tile Mfg CO INC | Kentwood | LA | — | ◇ UNVERIFIED |
| LBLee Brick and Tile Company, INC. | Sanford | NC | — | ◇ UNVERIFIED |
| MSMarathon (mplx) Siloam Plant | South Shore | KY | — | ◇ UNVERIFIED |
| MVMcavoy Vitrified Brick CO | Phoenixville | PA | — | ◇ UNVERIFIED |
| MGMe Global INC | Duluth | MN | — | ◇ UNVERIFIED |
| MBMeridian Brick Henderson Facility | Henderson | TX | — | ◇ UNVERIFIED |
| MBMeridian Brick LLC | Phenix City | AL | — | ◇ UNVERIFIED |
| MBMeridian Brick LLC | Terre Haute | IN | — | ◇ UNVERIFIED |
| MIMinteq International INC Zedmark Div | Dover | OH | — | ◇ UNVERIFIED |
 Momentive Performance Materials Quartz, INC. (0145000213) | Hebron | OH | — | ◇ UNVERIFIED |
| Momentive Performance Materials Quartz INC. (1318558216) | Strongsville | OH | — | ◇ UNVERIFIED |
| MCMonarch Ceramic Tile INC | Florence | AL | — | ◇ UNVERIFIED |
| MPMuskogee Plant | Muskogee | OK | — | ◇ UNVERIFIED |
| MMMutual Materials Manufacturing Facility | Gresham | OR | — | ◇ UNVERIFIED |
| MMMutual Materials Mica | Mica | WA | — | ◇ UNVERIFIED |
| NSNock & Son CO | Oak Hill | OH | — | ◇ UNVERIFIED |
| NANorth American Refractories Company | White Cloud | MI | — | ◇ UNVERIFIED |
| PBPabco Building Products (f#4070) | Sacramento | CA | — | ◇ UNVERIFIED |
| PBPalmetto Brick | Wallace | SC | — | ◇ UNVERIFIED |
| PAPcc Airfoils Deer Creek Annex | Milwaukie | OR | — | ◇ UNVERIFIED |
| PHPine Hall Brick Co-chilton Van Noppen | Madison | NC | — | ◇ UNVERIFIED |
| PHPine Hall Brick CO INC | Fairmount | GA | — | ◇ UNVERIFIED |
| PRPremier Refractories & Chemicals Incorporated | Chicago Heights | IL | — | ◇ UNVERIFIED |
