| SSShelby Steel LLC | Pell City | AL | — | ◇ UNVERIFIED |
| SSShelco Steel Works INC | South Holland | IL | — | ◇ UNVERIFIED |
| SVShell Valley Classic Wheels | Platte Center | NE | — | ◇ UNVERIFIED |
| STSheyenne Tooling & Mfg CO | Cooperstown | ND | — | ◇ UNVERIFIED |
| SCShinsei Corporation | Peachtree City | GA | — | ◇ 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 |
 Siemens Industry INC | El Paso | TX | — | ◇ UNVERIFIED |
| SOSigma Ohio Industries Plant 3 | Jefferson | OH | — | ◇ UNVERIFIED |
| SASignet Armorlite INC | San Marcos | CA | — | ◇ UNVERIFIED |
| SPSilgan Plastic Closure Solutions | Tolleson | AZ | — | ◇ UNVERIFIED |
| SWSilgan White Cap CORP | Champaign | IL | — | ◇ UNVERIFIED |
| SWSilgan White Cap Corporation | Athens | GA | — | ◇ UNVERIFIED |
| SLSilver Line Windows - Aluminum Div | Middlesex | NJ | — | ◇ UNVERIFIED |
| SSSilver State Plastics INC | Greeley | CO | — | ◇ UNVERIFIED |
| SWSimonton Windows | Paris | IL | — | ◇ UNVERIFIED |
 Sinicon Plastics INC | Dalton | MA | — | ◇ UNVERIFIED |
| SCSix C Fabrication INC | Winnfield | LA | — | ◇ UNVERIFIED |
| SGSkf Gastonia Facility | Gastonia | NC | — | ◇ UNVERIFIED |
| SSSkyline Steel | Newton | IL | — | ◇ UNVERIFIED |
| SJSlm Jetran Mfg CORP | Franklin Twp | NJ | — | ◇ UNVERIFIED |
| SMSmart Metals | Lawrence | MA | — | ◇ UNVERIFIED |
| SSmf | Minonk | IL | — | ◇ UNVERIFIED |
| SJSmi Joist Sc | Eastover | SC | — | ◇ UNVERIFIED |
| SSSmi Steel Fabricators, INC. Dba Cmc Rebar-orlando | Kissimmee | FL | — | ◇ UNVERIFIED |
| SUSmithers-oasis USA | Dayton | NV | — | ◇ UNVERIFIED |
| SMS & Molders, INC | Manalapan | NJ | — | ◇ UNVERIFIED |
| SISmt Incorporated - Raleigh Plant | Raleigh | NC | — | ◇ UNVERIFIED |
| SASnappy Adp Div of Standex International | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| SISnyder Industries | Lincoln | NE | — | ◇ UNVERIFIED |
| SISnyder Industries,inc. | Marked Tree | AR | — | ◇ UNVERIFIED |
| SISoelzer, INC Dba Firestone Fabricators | Signal Hill | CA | — | ◇ UNVERIFIED |
| SLSoft-lite LLC | Streetsboro | OH | — | ◇ UNVERIFIED |
| STSolar Turbines Turbofab Facility | Channelview | TX | — | ◇ UNVERIFIED |
| SCSolo Cup CO | Highland Park | IL | — | ◇ UNVERIFIED |
| SCSolo Cup CO | Wheeling | IL | — | ◇ UNVERIFIED |
| SCSolo Cup Operating CORP | Urbana | IL | — | ◇ UNVERIFIED |
| SCSolo Cup Operating Corporation - Thomaston Facility | Thomaston | GA | — | ◇ UNVERIFIED |
| SPSonoco Products Company INC Molded Plastics Division | Union | SC | — | ◇ UNVERIFIED |
| SASousa and Demayo INC | North Attleboro | MA | — | ◇ UNVERIFIED |
| SSSouthbridge Sheet Metal | Southbridge | MA | — | ◇ UNVERIFIED |
| SMSoutheastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SSSoutheastern Stud & Components, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| STSoutheastern Tool & Die | Aberdeen | NC | — | ◇ UNVERIFIED |
| SFSoutheast Fabricators, INC. | Cottondale | AL | — | ◇ UNVERIFIED |
| SMSouthern Marble Mfg INC | Ocala | FL | — | ◇ UNVERIFIED |
| SMSouthern Metals Company of Mississippi INC | Laurel | MS | — | ◇ UNVERIFIED |
| SPSouthern Post Texas | San Marcos | TX | — | ◇ 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 |
| SGSouth Grays Harbor Timber Reso | Shelton | WA | — | ◇ UNVERIFIED |
| SSSouth Sligo Compressor Station | Sligo | LA | — | ◇ UNVERIFIED |
| SISouthtech INC | Tappahannock | VA | — | ◇ UNVERIFIED |
| SVSouth Valley Mfg | Springfield | MO | — | ◇ UNVERIFIED |
| SHSouthwestern Hollow Metal | Raton | NM | — | ◇ UNVERIFIED |
| SSSouthwest Stair INC | El Mirage | AZ | — | ◇ UNVERIFIED |
| SISpacesonic INC | Union City | CA | — | ◇ UNVERIFIED |
 Special-lite, INC. - | Benton Harbor | MI | — | ◇ UNVERIFIED |
| SPSpecial Products Energy | Canton | MA | — | ◇ UNVERIFIED |
| SMSpecialties Mfg Co-brecon Ind Pk | Talladega | AL | — | ◇ UNVERIFIED |
| SLSpecialty Lens Corporation | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SMSpecialty Manufacturing | Amesbury | MA | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| SISpeedling, INC. | Ruskin | FL | — | ◇ UNVERIFIED |
| SBSplendor Boats, INC. | Silver Lake | IN | — | ◇ UNVERIFIED |
| SCSpringdale Complex | Springdale | AR | — | ◇ UNVERIFIED |
| SASr - Arkansas | Wilson | AR | — | ◇ UNVERIFIED |
| SSS & S Metal Fabricators | Chamois | MO | — | ◇ UNVERIFIED |
| SGStandard Glas, Star Glas INC. | Bremen | IN | — | ◇ UNVERIFIED |
| SSStandard Steel Fabricating CO INC | Seattle | WA | — | ◇ UNVERIFIED |
| SEStanley Engineered Fastening | Chesterfield | MI | — | ◇ UNVERIFIED |
 Steele Solutions INC | South Milwaukee | WI | — | ◇ 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 |
| SPSteel Products Company | Leicester | MA | — | ◇ UNVERIFIED |
| STSteel Technologies CORP | Jersey City | NJ | — | ◇ UNVERIFIED |
| SPSteeltec Products | Cleveland | OH | — | ◇ UNVERIFIED |
| SVSteel Ventures INC | Wurtland | KY | — | ◇ UNVERIFIED |
| SWSteel Warehouse of Ohio | Warren | OH | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SCSterling Custom Sheet Metal | Magnolia | TX | — | ◇ UNVERIFIED |
| SMSteward Machine CO. | Bainbridge | GA | — | ◇ UNVERIFIED |
| SSStiman Steel | Augusta | ME | — | ◇ UNVERIFIED |
| SBStonehouse Building Products LLC | Florence | KY | — | ◇ UNVERIFIED |
| SPStone Products of St Cloud INC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| SStoneycreek | Blairstown | IA | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | SC | — | ◇ UNVERIFIED |
| SSStruc Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| SSStructural Standards INC | Sparta | MI | — | ◇ UNVERIFIED |
