| SIStandard Industrial Mineral in | Laws | CA | — | ◇ UNVERIFIED |
| SMStandard Mineral Company Incorporated | Robbins | NC | — | ◇ UNVERIFIED |
| SMStebgo Metals INC - South St. Paul | South Saint Paul | MN | — | ◇ UNVERIFIED |
| SIStein, INC | Birmingham | AL | — | ◇ UNVERIFIED |
| SIStein, INC. (old Harsco Metals) | Tarrant | AL | — | ◇ UNVERIFIED |
| SLStein LLC (1318003929) | Cleveland | OH | — | ◇ UNVERIFIED |
| SCSt-gobain Ceramics & Plastics | Bryant | AR | — | ◇ UNVERIFIED |
| SAStiefel Aluminum INC | Dade City | FL | — | ◇ UNVERIFIED |
| SMStillwater Mining CO Smelter | Columbus | MT | — | ◇ UNVERIFIED |
| SMStillwater Mining CO Smelter | Columbus | MT | — | ◇ UNVERIFIED |
| SCStoody Company | Bowling Green | KY | — | ◇ UNVERIFIED |
| SPStreetman Plant | Streetman | TX | — | ◇ UNVERIFIED |
| SMSully Miller Contracting CO | Irwindale | CA | — | ◇ UNVERIFIED |
| SVSun Valley Shooting Area | Sun Valley | NV | — | ◇ UNVERIFIED |
| SDSuper Dry Industries INC | Shuqualak | MS | — | ◇ UNVERIFIED |
| SASuperior Aluminum Alloys LLC | New Haven | IN | — | ◇ UNVERIFIED |
| SVSuper Vacuum Mfg CO INC | Loveland | CO | — | ◇ UNVERIFIED |
| SPSupreme Perlite Company | Portland | OR | — | ◇ UNVERIFIED |
| STSurface Technology | Ewing | NJ | — | ◇ UNVERIFIED |
| SSSurplus Salvage Sales Jorge's Recycling | Brownsville | TX | — | ◇ UNVERIFIED |
| SBSussman Brothers Recycling | Allentown | PA | — | ◇ UNVERIFIED |
| SMSuzorite Mineral Products | Dell City | TX | — | ◇ UNVERIFIED |
| SWS & W Recycling | Russellville | KY | — | ◇ UNVERIFIED |
 Syrah Technologies LLC - Active Anode Material Facility | Vidalia | LA | — | ◇ UNVERIFIED |
| TITdy Industries, LLC | Monroe | NC | — | ◇ UNVERIFIED |
| TGTechemet - Genoa Red Bluff Rd Site | Pasadena | TX | — | ◇ UNVERIFIED |
| TMTen Mile Stone CO | Ten Mile | TN | — | ◇ UNVERIFIED |
| TLTervita LLC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| TWTessler & Weiss /premesco INC | Union | NJ | — | ◇ UNVERIFIED |
| TAThakar Aluminum | Sandusky | OH | — | ◇ UNVERIFIED |
| TAThakar Aluminum CORP | Corona | CA | — | ◇ UNVERIFIED |
| TBThe Battery Recycling Co., INC. | Arecibo | PR | — | ◇ UNVERIFIED |
| TBThe Buyers INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| TCThe Cool-amp Conducto-lube CO | Lake Oswego | OR | — | ◇ UNVERIFIED |
| TDThe Doe Run Company | Viburnum | MO | — | ◇ UNVERIFIED |
| TGThe G a Avril Company Brass & Bronze Division | Cincinnati | OH | — | ◇ UNVERIFIED |
| TPThe Perryman CO - Titanium Melting Facility - Phase 3 | Coal Center | PA | — | ◇ UNVERIFIED |
| TRThe R. J. Marshall Company | Southfield | MI | — | ◇ UNVERIFIED |
| TCThermal Ceramics INC | Girard | IL | — | ◇ UNVERIFIED |
| TSThe Strelitz CO INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| TMThorock Metals INC | Compton | CA | — | ◇ UNVERIFIED |
| TITimcor, INC | Defiance | OH | — | ◇ UNVERIFIED |
| TMTimet (titanium Metals) | Henderson | NV | — | ◇ UNVERIFIED |
| TRTitanium Refinery | Salt Lake City | UT | — | ◇ UNVERIFIED |
| TMT Minerals LLC - Perlite Expansion Facility | New Orleans | LA | — | ◇ UNVERIFIED |
| TITms International, LLC | Calvert | AL | — | ◇ UNVERIFIED |
| TITms International, LLC | Broadview Heights | OH | — | ◇ UNVERIFIED |
| TPTomra Pacific, INC | Fremont | CA | — | ◇ UNVERIFIED |
| TRTotal Recycling and Waste Solutions LLC | Tampa | FL | — | ◇ UNVERIFIED |
| TRTotal Recycling and Waste Solutions LLC | Tampa | FL | — | ◇ UNVERIFIED |
| TMTower Metal Products | Fort Scott | KS | — | ◇ UNVERIFIED |
| TMTrademark Metals Recycling, LLC | Tampa | FL | — | ◇ UNVERIFIED |
| TATrans Agg,inc. Dba Gibbco, INC. | Lawrenceburg | IN | — | ◇ UNVERIFIED |
| TMTreasure Mine | Dillon | MT | — | ◇ UNVERIFIED |
| TUTrebol USA LLC | Andrews | SC | — | ◇ UNVERIFIED |
| TFTriangle Fasteners INC | Ontario | CA | — | ◇ UNVERIFIED |
| TATric Aluminum Smelting Plant | Mccarran | NV | — | ◇ UNVERIFIED |
| TSTri Star Aluminum CO LP | Alexandria | TN | — | ◇ UNVERIFIED |
| TSTri Star Aluminum Company, L.p. | Alexandria | TN | — | ◇ UNVERIFIED |
| TCTube City Ims, LLC | Middletown | OH | — | ◇ UNVERIFIED |
| TITungco INC | Hanson | KY | — | ◇ UNVERIFIED |
| TTTwo Thousand Fahrenheit INC | Becker | MN | — | ◇ UNVERIFIED |
| TOTxi Operations | Streetman | TX | — | ◇ UNVERIFIED |
| UFU First Logistics INC. | Elyria | OH | — | ◇ UNVERIFIED |
| UCUnimin Corporation | Gleason | TN | — | ◇ UNVERIFIED |
| UCUnited Catalyst Corporation | Greenville | SC | — | ◇ UNVERIFIED |
| UMUnited Milwaukee Scrap | Milwaukee | WI | — | ◇ UNVERIFIED |
| USUnited Security Product INC | Poway | CA | — | ◇ UNVERIFIED |
 United States Gypsum Company | Spruce Pine | NC | — | ◇ UNVERIFIED |
 Universal Minerals International INC. | Louisville | KY | — | ◇ UNVERIFIED |
| UMUniversal Molding Company | Lynwood | CA | — | ◇ UNVERIFIED |
| USUniversal Scrap Management, LLC. | Lauderhill | FL | — | ◇ UNVERIFIED |
| USUniversal Silver CO | Portland | OR | — | ◇ UNVERIFIED |
| UUrbix | Mesa | AZ | — | ◇ UNVERIFIED |
| UOUsdol Osha | Manchester | GA | — | ◇ UNVERIFIED |
| USU S Granules Corporation | Henrietta | MO | — | ◇ UNVERIFIED |
| UMUS Magnesium LLC Rowley Plant | Rowley | UT | — | ◇ UNVERIFIED |
| UMUS Magnesium Llc- Rowley Plant | Rowley | UT | — | ◇ UNVERIFIED |
| USU S Reduction CO | Fontana | CA | — | ◇ UNVERIFIED |
| USUS Scrap Metal CO | Decatur | IL | — | ◇ UNVERIFIED |
| USU.s. Silica Company, | Middleton | TN | — | ◇ UNVERIFIED |
| USUS Silica Kosse Plant | Kosse | TX | — | ◇ UNVERIFIED |
| USUS Steel Corporation | Lorain | OH | — | ◇ UNVERIFIED |
| UZUS Zinc | Coldwater | MI | — | ◇ UNVERIFIED |
| UMUtah Metal Works | Salt Lake City | UT | — | ◇ UNVERIFIED |
| VMVanderbilt Minerals LLC | Bath | SC | — | ◇ UNVERIFIED |
| VGVernon Gold & Silver Company | Pittsburgh | PA | — | ◇ UNVERIFIED |
| VWVictory White Metal | Cleveland | OH | — | ◇ UNVERIFIED |
| VIVigindustries INC | Vernon | CA | — | ◇ UNVERIFIED |
| VCVoltaire Compressor Solution Dba Voltaire Incorporated | Oakland | CA | — | ◇ UNVERIFIED |
| VCVulcan Const Hanover Quarry & Carmeuse Lime Kilns | Hanover | PA | — | ◇ UNVERIFIED |
| VCVulcan Const Mat LP Anderson Quarry | Anderson | SC | — | ◇ UNVERIFIED |
| VCVulcan Construction Material Limited Partnership Pacolet Quarry | Pacolet | SC | — | ◇ UNVERIFIED |
| WTWa317935982 - Truefab LLC | Dayton | WA | — | ◇ UNVERIFIED |
| WPWa317939649 - Pyrotek Incorporated | Spokane Valley | WA | — | ◇ UNVERIFIED |
| WAWabash Alloys | Russellville | AL | — | ◇ UNVERIFIED |
| WAWabash Alloys-benton | Benton | AR | — | ◇ UNVERIFIED |
| WAWabash Alloys, LLC | Tipton | IN | — | ◇ UNVERIFIED |
| WAWabash Aluminum Alloys LLC | Richmond | VA | — | ◇ UNVERIFIED |
| WAWabash Aluminum Alloys LLC - Syracuse Plant | East Syracuse | NY | — | ◇ UNVERIFIED |
