| SGShannon Galvanizing | Floresville | TX | — | ◇ UNVERIFIED |
| SAShaw App Tubeline | New Brunswick | NJ | — | ◇ UNVERIFIED |
| SCShaw Connex Incorporated | Troutville | VA | — | ◇ UNVERIFIED |
| SBShawcor Beaumont Cement Pipe Coating Facility | Beaumont | TX | — | ◇ UNVERIFIED |
| SPShaw Pipe a Div of Shaw Resources | New Iberia | LA | — | ◇ UNVERIFIED |
| SPShaw Process Fabricators | West Monroe | LA | — | ◇ UNVERIFIED |
| SSShaw Sss Fabricators | Addis | LA | — | ◇ UNVERIFIED |
| SSShaw Sunland Fabricators INC - Sunland East | Walker | LA | — | ◇ UNVERIFIED |
| SWShaw Word Ind. Fabricators | Tulsa | OK | — | ◇ UNVERIFIED |
| SMSheaffer Manufacturing CO LLC | Fort Madison | IA | — | ◇ UNVERIFIED |
| SIShelby Industries | Shelbyville | KY | — | ◇ UNVERIFIED |
| SSShelby Steel LLC | Pell City | AL | — | ◇ UNVERIFIED |
| SSShelby Steel Vincent Incorporated | Vincent | AL | — | ◇ UNVERIFIED |
| SPShelbyville Plating & Polishing Company | Shelbyville | IN | — | ◇ UNVERIFIED |
| SSShelco Steel Works INC | South Holland | IL | — | ◇ UNVERIFIED |
| SMShenandoah Manufacturing Company Incorporated | Harrisonburg | VA | — | ◇ UNVERIFIED |
 Sherex Fastening Solutions Akron | Akron | OH | — | ◇ UNVERIFIED |
| STSheyenne Tooling & Mfg CO | Cooperstown | ND | — | ◇ UNVERIFIED |
| SIShiloh Industries INC Mtd Automotive Div | Cleveland | OH | — | ◇ UNVERIFIED |
| SShopwerks | Braceville | IL | — | ◇ UNVERIFIED |
| SSShoreline Steel South | Paducah | KY | — | ◇ UNVERIFIED |
| SMShugart Manufacturing | Chester | SC | — | ◇ UNVERIFIED |
| SASiag Aerisyn LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| SLSic Lazaro US INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SASiegel-robert Automotive- Bowling Green | Bowling Green | KY | — | ◇ UNVERIFIED |
| SRSiegel Robert Automotive Ripley South | Ripley | TN | — | ◇ UNVERIFIED |
| SRSiegel Robert Plating-siegel Robert Plating | Saint Louis | MO | — | ◇ UNVERIFIED |
| SESiemens Energy, INC | Geismar | LA | — | ◇ UNVERIFIED |
| SSSierra Sandblasting LLC | Tacoma | WA | — | ◇ UNVERIFIED |
| SASifco Applied Surface Concepts | Houston | TX | — | ◇ UNVERIFIED |
| SCSigma Corporation | Alexander City | AL | — | ◇ UNVERIFIED |
| SFSigma Fasteners | Houston | TX | — | ◇ UNVERIFIED |
| SPSignal Plating, INC. | Chattanooga | TN | — | ◇ UNVERIFIED |
| SFSignature Finishers | Cordele | GA | — | ◇ UNVERIFIED |
| SPSignature Plating | Cibolo | TX | — | ◇ UNVERIFIED |
| SMSignet Machine INC | Grandville | MI | — | ◇ UNVERIFIED |
| SMSignode Metals Group | Weirton | WV | — | ◇ UNVERIFIED |
| SCSilgan Containers Mfg CORP | Oconomowoc | WI | — | ◇ UNVERIFIED |
| SWSilgan White Cap/hazleton Plt | Hazleton | PA | — | ◇ UNVERIFIED |
| SFSilverline Finishing INC. | Ogden | UT | — | ◇ UNVERIFIED |
| SSSilver Star Manufacturing LLC | Brainerd | MN | — | ◇ UNVERIFIED |
| SWSilver Weibull | Aurora | CO | — | ◇ UNVERIFIED |
| SPSimmons Plating & Grinding CO INC | Harahan | LA | — | ◇ UNVERIFIED |
| SISimonds International | Ridgefield | WA | — | ◇ UNVERIFIED |
| SPSioux Plating Company | South Sioux City | NE | — | ◇ UNVERIFIED |
| SISix2 INC | Hawthorne | FL | — | ◇ UNVERIFIED |
| SCSix C Fabrication INC | Winnfield | LA | — | ◇ UNVERIFIED |
| SOSixty One Industrial Park | Memphis | TN | — | ◇ UNVERIFIED |
| SCSize Control Plating CO INC | La Puente | CA | — | ◇ UNVERIFIED |
| SMSkach Manufacturing CO. | Antioch | IL | — | ◇ UNVERIFIED |
| SGSkf Gastonia Facility | Gastonia | NC | — | ◇ UNVERIFIED |
| SFSk Finishing INC | Lorain | OH | — | ◇ UNVERIFIED |
| SISkills INC Paint | Seattle | WA | — | ◇ UNVERIFIED |
| SISkycoat Industrial Armor | Baldwin | WI | — | ◇ UNVERIFIED |
| SSSkyline Steel | Newton | IL | — | ◇ UNVERIFIED |
 Skyline Steel Llc-iuka | Iuka | MS | — | ◇ UNVERIFIED |
| SLS L Auburn INC | Auburn | NY | — | ◇ UNVERIFIED |
| SISlidell INC | Owatonna | MN | — | ◇ UNVERIFIED |
| SSSl Surface Technologies | Camden | NJ | — | ◇ UNVERIFIED |
| SMSmart Metals | Lawrence | MA | — | ◇ UNVERIFIED |
| SSSmeal Sfa LLC | Snyder | NE | — | ◇ UNVERIFIED |
| SSmf | Minonk | IL | — | ◇ UNVERIFIED |
| SJSmi Joist Sc | Eastover | SC | — | ◇ UNVERIFIED |
| SSSmi Steel Fabricators, INC. Dba Cmc Rebar-orlando | Kissimmee | FL | — | ◇ UNVERIFIED |
| SCSmith Chrome Plating | Walla Walla | WA | — | ◇ UNVERIFIED |
| SCSmith County Industrial Coatings, LLC | Gordonsville | TN | — | ◇ UNVERIFIED |
| SMSmithcraft Machine | Wedowee | AL | — | ◇ UNVERIFIED |
| SESmith Equipment and Welding | Prineville | OR | — | ◇ UNVERIFIED |
| SMSmiths Machine and Welding Company INC | Brookhaven | MS | — | ◇ UNVERIFIED |
| STSmiths Tubular Systems | Laconia | NH | — | ◇ UNVERIFIED |
| SHSmp Holdings, INC. | Anaheim | CA | — | ◇ UNVERIFIED |
| SMSmtc Manufacturing CORP of Massachusetts | Franklin | MA | — | ◇ UNVERIFIED |
| SISmt Incorporated - Raleigh Plant | Raleigh | NC | — | ◇ UNVERIFIED |
| SASnappy Adp Div of Standex International | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
| SISoelzer, INC Dba Firestone Fabricators | Signal Hill | CA | — | ◇ UNVERIFIED |
| STSolar Turbines Turbofab Facility | Channelview | TX | — | ◇ UNVERIFIED |
| SPSolder Plating Llc, Dba B&w Plating | Fort Smith | AR | — | ◇ UNVERIFIED |
| SPSolder Plating, LLC Dba B&w Plating | Van Buren | AR | — | ◇ UNVERIFIED |
| SDSolitron Devices INC | Riviera Beach | FL | — | ◇ UNVERIFIED |
| SCSolomon Corporation - Flandreau | Flandreau | SD | — | ◇ UNVERIFIED |
| SMSonat Minerals 18 #1 Facility | Deridder | LA | — | ◇ UNVERIFIED |
| SPSonoco - Phoenix | Memphis | TN | — | ◇ UNVERIFIED |
| SCSons Coating LLC | Morgan City | LA | — | ◇ UNVERIFIED |
| SPSoramatic Precision Machining | Warren | MI | — | ◇ UNVERIFIED |
| SSSoriano Special Coatings | Dallas | TX | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SESound Enhancement Products | Cary | IL | — | ◇ UNVERIFIED |
| SPSouriau Paande Sequim | Sequim | WA | — | ◇ UNVERIFIED |
| SASousa and Demayo INC | North Attleboro | MA | — | ◇ UNVERIFIED |
| SCSousa CORP | West Hartford | CT | — | ◇ UNVERIFIED |
| SBSouth Bay Chrome | Santa Ana | CA | — | ◇ UNVERIFIED |
| SSSouthbridge Sheet Metal | Southbridge | MA | — | ◇ UNVERIFIED |
| SISoutheastern Industrial Plating, INC. | Statesville | NC | — | ◇ UNVERIFIED |
| SMSoutheastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SPSoutheastern Plateworks | Birmingham | AL | — | ◇ UNVERIFIED |
| SRSoutheastern Rack Company | Vero Beach | FL | — | ◇ UNVERIFIED |
| SSSoutheastern Stud & Components, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| STSoutheastern Tool & Die | Aberdeen | NC | — | ◇ UNVERIFIED |
| SFSoutheast Fabricators, INC. | Cottondale | AL | — | ◇ UNVERIFIED |
