| SMSmart Metals | Lawrence | MA | — | ◇ UNVERIFIED |
| SSmf | Minonk | IL | — | ◇ UNVERIFIED |
| SISmf INC | Minonk | IL | — | ◇ UNVERIFIED |
| SJSmi Joist Sc | Eastover | SC | — | ◇ UNVERIFIED |
| SSSmi Steel Fabricators, INC. Dba Cmc Rebar-orlando | Kissimmee | FL | — | ◇ UNVERIFIED |
| SESmithco Engineering INC | Tulsa | OK | — | ◇ UNVERIFIED |
| SESmith Equipment and Welding | Prineville | OR | — | ◇ UNVERIFIED |
| SMSmith Mountain Industries INC | Forest | VA | — | ◇ UNVERIFIED |
| SMSmiths Machine and Welding Company INC | Brookhaven | MS | — | ◇ 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 |
| SCSokol & Company | Countryside | IL | — | ◇ UNVERIFIED |
| STSolar Turbines Turbofab Facility | Channelview | TX | — | ◇ UNVERIFIED |
| SOSomerset Office Condominium | Boston | MA | — | ◇ UNVERIFIED |
| SPSonoco - Phoenix | Memphis | TN | — | ◇ UNVERIFIED |
| SPSoramatic Precision Machining | Warren | MI | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SESound Enhancement Products | Cary | IL | — | ◇ UNVERIFIED |
| SASousa and Demayo INC | North Attleboro | MA | — | ◇ UNVERIFIED |
| SSSouthbridge Sheet Metal | Southbridge | MA | — | ◇ UNVERIFIED |
| SCSouth Chicago Property Mgmt LTD | Chicago | IL | — | ◇ UNVERIFIED |
| SMSoutheastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SPSoutheastern Plateworks | Birmingham | AL | — | ◇ UNVERIFIED |
| SSSoutheastern Stud & Components, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| STSoutheastern Tool & Die | Aberdeen | NC | — | ◇ UNVERIFIED |
| SFSoutheast Fabricators, INC. | Cottondale | AL | — | ◇ UNVERIFIED |
| SESouthern Erectors INC | Pensacola | FL | — | ◇ UNVERIFIED |
| SMSouthern Machinery CORP | Lakeland | FL | — | ◇ UNVERIFIED |
| SMSouthern Metals Company of Mississippi INC | Laurel | MS | — | ◇ UNVERIFIED |
| SPSouthern Post Texas | San Marcos | TX | — | ◇ UNVERIFIED |
| SSSouthern Sales | Travelers Rest | SC | — | ◇ UNVERIFIED |
| SSSouthern Steel Comapny Limited Liability Company | Charlotte | NC | — | ◇ UNVERIFIED |
| SSSouthern Structural Steel Incorporated | Smithfield | VA | — | ◇ UNVERIFIED |
| SSSouthern Structural Steel of Fl, INC | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| SFSouth Frontier Facility | Lexington | NE | — | ◇ UNVERIFIED |
| SSSouth Sligo Compressor Station | Sligo | LA | — | ◇ UNVERIFIED |
| SVSouth Valley Mfg | Springfield | MO | — | ◇ UNVERIFIED |
| SHSouthwestern Hollow Metal | Raton | NM | — | ◇ UNVERIFIED |
| SMSouthwest Management CO | Alsip | IL | — | ◇ UNVERIFIED |
| SMSouthwest Mill & Lumber Incorporated | N Hollywood | CA | — | ◇ UNVERIFIED |
| SSSouthwest Stair INC | El Mirage | AZ | — | ◇ UNVERIFIED |
| SISparkman Industries Plant 2 | Victoria | TX | — | ◇ UNVERIFIED |
| SSSpartanburg Stainless Products | Spartanburg | SC | — | ◇ UNVERIFIED |
| SSSpeciality Stairs and Miscellaneous Fabrication INC | Pearl | MS | — | ◇ UNVERIFIED |
| SPSpecial Products Company - Golden Plant | Golden | CO | — | ◇ UNVERIFIED |
| SPSpecial Products Energy | Canton | MA | — | ◇ UNVERIFIED |
| SESpecial-t Engraving & Gifts | Rockford | IL | — | ◇ UNVERIFIED |
| SMSpecialties Mfg Co-brecon Ind Pk | Talladega | AL | — | ◇ UNVERIFIED |
| SESpecialty Engine Components LLC | Taylor | MI | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| SMSpecialty Manufacturing | Amesbury | MA | — | ◇ UNVERIFIED |
| SMSpecialty Manufacturing Company INC. | Bath | SD | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| STSpecialty Tank & Equip CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| SBSpectrum Brands Pet Group INC | Blacksburg | VA | — | ◇ UNVERIFIED |
| SRSpoon Ridge Landfill | Fairview | IL | — | ◇ UNVERIFIED |
| SRSport Redi-mix LLC | Mahomet | IL | — | ◇ UNVERIFIED |
| SSSportsman Steel Safes | Long Beach | CA | — | ◇ UNVERIFIED |
| SWSpringbrook Waste Facility & Compost Site | Naperville | IL | — | ◇ UNVERIFIED |
| SESpudnik Equipment CO (plant 3) | Blackfoot | ID | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC | Delavan | WI | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC - Millstead Way | Rochester | NY | — | ◇ UNVERIFIED |
| SWSsab Wear Solutions LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| SSS & S Metal Fabricators | Chamois | MO | — | ◇ UNVERIFIED |
| SWSs White Technologies INC | Piscataway | NJ | — | ◇ UNVERIFIED |
| SAStadco Automatics (0829060007) | Fairborn | OH | — | ◇ UNVERIFIED |
| SPStainless Process Systems | Oxnard | CA | — | ◇ UNVERIFIED |
| SMStamplus Mfg INC | Roselle | NJ | — | ◇ UNVERIFIED |
| SIStamptech INC Dba Aoc Metal Works | Lynchburg | VA | — | ◇ UNVERIFIED |
 Standard Machine Works INC | Houston | TX | — | ◇ UNVERIFIED |
| SSStandard Steel Fabricating CO INC | Seattle | WA | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | DE | — | ◇ UNVERIFIED |
| SWStandard Warehouse Company | Lugoff | SC | — | ◇ UNVERIFIED |
| SIStandex International Spincraft Division | Billerica | MA | — | ◇ UNVERIFIED |
| SBStandley Batch Systems INC | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SIStanley Industries INC | Warrensville Hts | OH | — | ◇ UNVERIFIED |
| SKStanley Knight CORP. | Three Oaks | MI | — | ◇ UNVERIFIED |
| SMStanwade Metal Products | Fowler | OH | — | ◇ UNVERIFIED |
| SAStark Auto Sales | Charleston | IL | — | ◇ UNVERIFIED |
| SEStark Excavating | Bloomington | IL | — | ◇ UNVERIFIED |
| SPStarro Precision Products INC | Elgin | IL | — | ◇ UNVERIFIED |
| SRStarved Rock Adventures, INC. | Ottawa | IL | — | ◇ UNVERIFIED |
| SFState Fabricators, INC. | Farmingtn Hls | MI | — | ◇ UNVERIFIED |
| SRState Route 85 (sr-85) Landfill | Buckeye | AZ | — | ◇ UNVERIFIED |
| SSState Street Bank - Westwood | Westwood | MA | — | ◇ UNVERIFIED |
| SCSteel City CORP | Youngstown | OH | — | ◇ UNVERIFIED |
 Steele Solutions INC | South Milwaukee | WI | — | ◇ UNVERIFIED |
| SFSteel Fab | Abingdon | VA | — | ◇ UNVERIFIED |
| SFSteel Fab Enterprises Ss Fisher Landfill | Lancaster | PA | — | ◇ UNVERIFIED |
 Steelfab, INC. | York | SC | — | ◇ UNVERIFIED |
| Steelfab, INC. - Texas Division | Durant | OK | — | ◇ UNVERIFIED |
| SOSteelfab of Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
| SOSteelfab Oregon, INC. | Spokane | WA | — | ◇ UNVERIFIED |
| SFSteel Fabricators INC. | Lincoln | NE | — | ◇ UNVERIFIED |
| SFSteel Fabricators, INC. | Fort Collins | CO | — | ◇ UNVERIFIED |
| SFSteel Fabricators L.l.c. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| Steelfab West, INC. | Tangent | OR | — | ◇ UNVERIFIED |
| SPSteel Painters INC | Kelso | WA | — | ◇ UNVERIFIED |
