| SWShearer's Waterford Plant - Wastewater Force Main | Waterford, Township of | PA | — | ◇ UNVERIFIED |
| SCSilbrico Corp/easton | Forks Township | PA | — | ◇ UNVERIFIED |
| SCSilbrico Corporation | Brunswick | GA | — | ◇ UNVERIFIED |
| SPSilicon Processors, Inc., Parkersburg | Parkersburg | WV | — | ◇ UNVERIFIED |
| SMSkyline Metals Llc/slag Processing Plt | Baden | PA | — | ◇ UNVERIFIED |
| SCSkyway Cement CO LLC | Chicago | IL | — | ◇ UNVERIFIED |
| SPSlag Plant | El Paso | TX | — | ◇ UNVERIFIED |
| SMSmoky Mountain Transfer Corporation | Charleston | TN | — | ◇ UNVERIFIED |
| SRSnowfield Rock Products | Hurricane | UT | — | ◇ UNVERIFIED |
| SRSoiland Repair LLC | Windsor | CA | — | ◇ UNVERIFIED |
| SNSoilmec North America INC. | Paramount | CA | — | ◇ UNVERIFIED |
| SCSolano Concrete Company INC | Fairfield | CA | — | ◇ UNVERIFIED |
| SISolem Industries | Fairmount | GA | — | ◇ UNVERIFIED |
| SCSolite CORP | Cascade | VA | — | ◇ UNVERIFIED |
| SCSoutheastern Clay CO | Aiken | SC | — | ◇ UNVERIFIED |
| SCSouthern Clay Products | Gonzales | TX | — | ◇ UNVERIFIED |
| SRSouthern Rotary Drill | Nauvoo | AL | — | ◇ UNVERIFIED |
| SBSouthport Boats, LLC | Leland | NC | — | ◇ UNVERIFIED |
| SSSouth Shore Slag LLC - Contractor of Uss Gary Works (00121) | Gary | IN | — | ◇ UNVERIFIED |
| SESpaulding Equipment CO | Perris | CA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals (at Madison Paper) | Madison | ME | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Zachary | LA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Ashdown | AR | — | ◇ UNVERIFIED |
| SVSpecialty Vermiculite CORP | Enoree | SC | — | ◇ UNVERIFIED |
| SQSpectra Quest, Inc | Henrico | VA | — | ◇ UNVERIFIED |
| SCSpinks Clay Company - Gleason Plant | Gleason | TN | — | ◇ UNVERIFIED |
| SKSpray King INC | Fresno | CA | — | ◇ UNVERIFIED |
| SOSrc of Lexington INC - Mercer Rd | Lexington | KY | — | ◇ UNVERIFIED |
| SISrdc INC | Sunol | CA | — | ◇ UNVERIFIED |
| SISr Injection Molding INC | Clinton Twp | MI | — | ◇ UNVERIFIED |
| SCStandard Corporation Jones Lane | Lugoff | SC | — | ◇ UNVERIFIED |
| SIStandard Industrial Mineral in | Laws | CA | — | ◇ UNVERIFIED |
| SMStandard Mineral Company Incorporated | Robbins | NC | — | ◇ UNVERIFIED |
| SBStanley Black - Decker INC Dba Stanley Labounty- W | Two Harbors | MN | — | ◇ UNVERIFIED |
| SCStavola Contracting CO INC | Tinton Falls | NJ | — | ◇ UNVERIFIED |
| SIStein, INC | Birmingham | AL | — | ◇ UNVERIFIED |
| SIStein, INC. (old Harsco Metals) | Tarrant | AL | — | ◇ UNVERIFIED |
| SLStein LLC (1318003929) | Cleveland | OH | — | ◇ UNVERIFIED |
| SMStephens Manufacturing | Burkesville | KY | — | ◇ UNVERIFIED |
| SCSt-gobain Ceramics & Plastics | Bryant | AR | — | ◇ UNVERIFIED |
| SIStoneco INC Denniston Quarry | Monroe | MI | — | ◇ UNVERIFIED |
| SPStreetman Plant | Streetman | TX | — | ◇ UNVERIFIED |
| SMSully Miller Contracting CO | Irwindale | CA | — | ◇ UNVERIFIED |
| SSSun Superior Chipper Parts LLC | Darlington | SC | — | ◇ UNVERIFIED |
| SDSuper Dry Industries INC | Shuqualak | MS | — | ◇ UNVERIFIED |
| SMSuperior Manufacturing Company | Winston Salem | NC | — | ◇ UNVERIFIED |
| SSSuperior Supplies INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SMSuper Mix Concrete INC. | San Sebastian | PR | — | ◇ UNVERIFIED |
| SPSupreme Perlite Company | Portland | OR | — | ◇ UNVERIFIED |
| SMSuzorite Mineral Products | Dell City | TX | — | ◇ UNVERIFIED |
| STSwing Trucking Portable Crushing & Screening Equipment | Washakie | WY | — | ◇ UNVERIFIED |
| SISyar Industries | Fairfield | CA | — | ◇ UNVERIFIED |
 Syrah Technologies LLC - Active Anode Material Facility | Vidalia | LA | — | ◇ UNVERIFIED |
| TGTarget Graphics INC | Sarasota | FL | — | ◇ UNVERIFIED |
| TTTbc - the Boring Company | Adelanto | CA | — | ◇ UNVERIFIED |
| TITekfab INC | Albany | OR | — | ◇ UNVERIFIED |
| TTeleweld | Streator | IL | — | ◇ UNVERIFIED |
| TCTerex Corporation | Canton | SD | — | ◇ UNVERIFIED |
| TCTerex Cranes Wilmington, INC. | Wilmington | NC | — | ◇ UNVERIFIED |
| TSTerex Services Corporation | Waco | TX | — | ◇ UNVERIFIED |
| TUTerex Utilities INC. | Houston | TX | — | ◇ UNVERIFIED |
| TUTerex Utilities, INC | Waco | TX | — | ◇ UNVERIFIED |
| TLTervita LLC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| TMTexas Machining Technologies | Schertz | TX | — | ◇ UNVERIFIED |
| TLThawzall LLC | Alexandria | MN | — | ◇ UNVERIFIED |
| TMThe Manitowoc Company, INC. | Manitowoc | WI | — | ◇ UNVERIFIED |
| TRThe R. J. Marshall Company | Southfield | MI | — | ◇ UNVERIFIED |
| TCThermal Ceramics INC | Girard | IL | — | ◇ UNVERIFIED |
| TRThe Robbins Company | Victorville | CA | — | ◇ UNVERIFIED |
| TSThe Steel Network, INC | Durham | NC | — | ◇ UNVERIFIED |
| TVThe Vince Hagan Company | San Antonio | TX | — | ◇ UNVERIFIED |
| TSThornberg Steel INC | Bethel | MN | — | ◇ UNVERIFIED |
| TSThunder Stone Quarry LLC | Carlsbad | NM | — | ◇ UNVERIFIED |
| TATitan Ase, LLC | Douglasville | GA | — | ◇ UNVERIFIED |
| TMTitan Metal Worx | Fort Wayne | IN | — | ◇ UNVERIFIED |
| TMT Minerals LLC - Perlite Expansion Facility | New Orleans | LA | — | ◇ UNVERIFIED |
| TITms International, LLC | Calvert | AL | — | ◇ UNVERIFIED |
| TITms International, LLC | Broadview Heights | OH | — | ◇ UNVERIFIED |
| TBTnt Blanchard General Engineering INC | Banning | CA | — | ◇ UNVERIFIED |
| TMTobroco Machinery LLC | City of Des Moines | IA | — | ◇ UNVERIFIED |
| TDTool Design Engineering & Mfg | Salt Lake City | UT | — | ◇ UNVERIFIED |
| TETownline Equipment | Pittsford | VT | — | ◇ UNVERIFIED |
| TATrans Agg,inc. Dba Gibbco, INC. | Lawrenceburg | IN | — | ◇ UNVERIFIED |
| TSTraylor Shea Precast, Ajv | Stockton | CA | — | ◇ UNVERIFIED |
| TMTreasure Mine | Dillon | MT | — | ◇ UNVERIFIED |
| TSTreasure Service Inc | Chicago | IL | — | ◇ UNVERIFIED |
| TUTrebol USA LLC | Andrews | SC | — | ◇ UNVERIFIED |
| TSTrench System Control LLC | Winder | GA | — | ◇ UNVERIFIED |
| TCTriangle Concrete INC | Kewanee | IL | — | ◇ UNVERIFIED |
| TSTrinity Shoring Products INC Dba Pro-tec Equipment | Lansing | MI | — | ◇ UNVERIFIED |
| TSTrinity Shoring Products INC Dba Pro-tech Equipment | Lansing | MI | — | ◇ UNVERIFIED |
| TSTri State Ready Mix | Olive Branch | MS | — | ◇ UNVERIFIED |
| TCTube City Ims, LLC | Middletown | OH | — | ◇ UNVERIFIED |
| TITungco INC | Hanson | KY | — | ◇ UNVERIFIED |
| TPTutor Perini Corporation Equipment Yard | Fontana | CA | — | ◇ UNVERIFIED |
| TTTwo Thousand Fahrenheit INC | Becker | MN | — | ◇ UNVERIFIED |
| TOTxi Operations | Streetman | TX | — | ◇ UNVERIFIED |
| UEUco Equipment LLC | Cabot | AR | — | ◇ UNVERIFIED |
| UEUco Equipment, LLC | Cabot | AR | — | ◇ UNVERIFIED |
| UIUltraquip International Dba Uq-power | Stockton | CA | — | ◇ UNVERIFIED |
