| OVOmya Verpol Plant | Florence | VT | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| OMOpta - Milan | Milan | MI | Nonmetallic Mineral Product Manufacturing327992 | 1-19 | ◐ LIKELY ACTIVE |
| PPPa Perlite CORP | Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| PSPhoenix Services LLC - Petersburg | Petersburg | VA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SPSilicon Processors, Inc., Parkersburg | Parkersburg | WV | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SVSpecialty Vermiculite CORP | Enoree | SC | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SGSun Gro Horticulture Processing, INC. | Pine Bluff | AR | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| TCTAM Ceramics Group of NY, LLC | Niagara Falls | NY | Nonmetallic Mineral Product Manufacturing327992 | 20-99 | ◐ LIKELY ACTIVE |
| UCUnimin Corporation | Gleason | TN | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
United States Gypsum Company | Spruce Pine | NC | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| UMUS Mineral Products | Stanhope | NJ | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| USU.s. Silica Company, | Middleton | TN | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| USUS Silica Kosse Plant | Kosse | TX | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| USUS Steel Corporation | Lorain | OH | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| VBVm Buyer Llc/mcnamee Mine | Bath | SC | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| WCWhittemore Company, Inc. | Lawrence | MA | Nonmetallic Mineral Product Manufacturing327992 | 20-99 | ◐ LIKELY ACTIVE |
| BMBarretts Minerals INC. Mill Site | Dillon | MT | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| BRBig River Industries Gravelite Division | Erwinville | LA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| BIBird Incorporated Granular | Norwood | MA | Petroleum and Coal Products Manufacturing324122 | — | ◐ LIKELY ACTIVE |
| BIBpi Inc-greenville Pa Plant | Greenville | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| BMButler Mill Service Company | Butler | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| CCetco | Lovell | WY | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| CMCleveland Mica CO | Lakewood | OH | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| CCColumbia City Mill Services | Columbia City | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| DFDay, F.o. Bituminous - Piney Mtg | Rockville | MD | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| ECEdw C Levy CO - Plant 3 | Ecorse | MI | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| ECEssroc Cement CORP. | Camden | NJ | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| FMFulton Mill Service CO | Delta | OH | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| GHGlenn Hunter & Associates | Delta | OH | Nonmetallic Mineral Product Manufacturing327215 | — | ◐ LIKELY ACTIVE |
| HCHarsco CORP. | La Cygne | KS | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| HCHarsco Corporation | Calvert | AL | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| HRHolliday Rock Co., INC. | Rialto | CA | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| IPImerys Perlite Usa, INC. | Lake Wales | FL | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| IMIsp Minerals Charmian Quarry | Blue Ridge Summit | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| KQKutztown Quarry | Kutztown | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| LCLafarge CORP Duquesne_plant | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| MLMicro-lite, L.l.c. | Buffalo | KS | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| NWNyco Wollastocoat Product Plant | Willsboro | NY | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| ONOil-dri North and South Plant | Ochlocknee | GA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| PGPhoenix Global | Riverdale | IL | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| RMRecovermat Mid-atlantic, LLC | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SCSilbrico Corp/easton | Forks Township | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SMSkyline Metals Llc/slag Processing Plt | Baden | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SISolem Industries | Fairmount | GA | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SSSouth Shore Slag LLC - Contractor of Uss Gary Works (00121) | Gary | IN | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SMStandard Mineral Company Incorporated | Robbins | NC | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| SIStein INC. | Decatur | AL | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| TITms International, LLC | Broadview Heights | OH | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| TUTrebol USA LLC | Andrews | SC | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| UUrbix | Mesa | AZ | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |