| SMSpecialty Minerals (at Madison Paper) | Madison | ME | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Ashdown | AR | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SCSpinks Clay Company - Gleason Plant | Gleason | TN | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SCStandard Corporation Jones Lane | Lugoff | SC | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SIStandard Industrial Mineral in | Laws | CA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SLStein LLC (1318003929) | Cleveland | OH | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SCSt-gobain Ceramics & Plastics | Bryant | AR | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SPStreetman Plant | Streetman | TX | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SMSully Miller Contracting CO | Irwindale | CA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| SPSupreme Perlite Company | Portland | OR | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TRThe R. J. Marshall Company | Southfield | MI | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TMT Minerals LLC - Perlite Expansion Facility | New Orleans | LA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TITms International, LLC | Calvert | AL | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TMTreasure Mine | Dillon | MT | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TCTube City Ims, LLC | Middletown | OH | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| TOTxi Operations | Streetman | TX | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
 Universal Minerals International INC. | Louisville | KY | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| VCVulcan Const Hanover Quarry & Carmeuse Lime Kilns | Hanover | PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| WPWa317939649 - Pyrotek Incorporated | Spokane Valley | WA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| W1Willies 1 Day Cleaners | San Marcos | CA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| XMXcava Mill, LLC | Progreso | TX | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
