| EGEmhart Glass Holding INC | Owensville | MO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| EPEufaula Plant | Eufaula | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
 Fast Global Solutions INC. | Auburn | NE | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| FBFlorida Brick & Clay CO INC | Plant City | FL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
 Florida Tile INC | Shannon | GA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| FRForterra Roof Tile INC | Fort Myers | FL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| FTFuzion Tech/freeport Brick Div | Freeport | PA | Chemical Manufacturing325194 | — | ◇ UNVERIFIED |
| FTFuzion Tech/kittanning Brick Div | Adrian | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick, INC. - Plant 10 | Johnson City | TN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick INC Plant 28 | Atkins | VA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick INC. Plant #33 | Woodbine | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Products CORP | Kingsport | TN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Products Corporation | Knoxville | TN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Products LLC Plant #18 | Huntsville | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GSGeneral Shale Products LLC - Plant 37 | Somerset | VA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GGGlen Gery Bigler Plt | Bigler | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GCGlen-gery CORP | Redfield | IA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GCGlen-gery CORP | Utica | MO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GCGlen-gery CORP Caledonia Plant | Caledonia | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GCGlen-gery Corporation-callaville Pit | Freeman | VA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GCGlen-gery Corporation-fort Hill Pit | Lawrenceville | VA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GHGlen-gery Hanley Plt | Summerville | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| GGGlen Gery York Brick Plt | York | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HCHanna Clnrs/red Lion | Red Lion | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC | Blacksburg | SC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC | Mooringsport | LA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC - Ashland Facility | Ashland | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HBHanson Brick Pleasant Garden Plant | Pleasant Garden | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HWHarbison Walker (fairfield) | Fairfield | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HWHarbison Walker International-chlorinator | Claysburg | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HPHarmar Plt | Cheswick | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HBHiggins Brick CO | Chino Hills | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| HCHowmet Castings & Services INC | Morristown | TN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ICInternational Chimney CORP | Kittanning | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| JBJenkins Brick Company | Coosada | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| KCKasten Clay Products Co-jackson | Jackson | MO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| KMKrosaki Magnesita Refractories | York | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| LBLouisville Brick Company | Louisville | MS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| LFLouisville Fire Brick Wks | Grahn | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| LFLouisville Fire Brick Works | Grahn | KY | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MMagneco | Addison | IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MIMetric, INC. (jan Nylund) | Tampa | FL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MCMiller & CO | Seneca | IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MIMinteq International INC Zedmark Div | Dover | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MIMinteq Intl INC | Bryan | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MCMission Clay Products | Pittsburg | KS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MCMorganite Crucible | North Haven | CT | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MBMorin Brick Company | Gorham | ME | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MSMt Savage Specialty Refractories | Mount Savage | MD | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| NRNational Refractories & Minerals CORP. | Wellsville | MO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
