| NPNekoosa Packaging, Memphis Boxplant | Memphis | TN | — | ◇ UNVERIFIED |
| NNelco | Houston | TX | — | ◇ UNVERIFIED |
| NANew Alenco Windows LTD | Bryan | TX | — | ◇ UNVERIFIED |
| NMNew Millenium Building Systems LLC | Butler | IN | — | ◇ UNVERIFIED |
| NUNew United Motor Manufacturing | Fremont | CA | — | ◇ UNVERIFIED |
| NINlmk Indiana | Portage | IN | — | ◇ UNVERIFIED |
| NSNorth Star Steel CO | Monroe | MI | — | ◇ UNVERIFIED |
| NCNucor CORP - Darlington Plant | Darlington | SC | — | ◇ UNVERIFIED |
| NCNucor CORP - Nucor Steel | Blytheville | AR | — | ◇ UNVERIFIED |
| NSNucor Steel - a Div of Nucor CORP | Plymouth | UT | — | ◇ UNVERIFIED |
| NSNucor Steel Auburn INC | Auburn | NY | — | ◇ UNVERIFIED |
| NSNucor Steel Birmingham INC | Birmingham | AL | — | ◇ UNVERIFIED |
| NSNucor Steel - Cofield Facility | Cofield | NC | — | ◇ UNVERIFIED |
| NSNucor Steel Jackson INC | Flowood | MS | — | ◇ UNVERIFIED |
| NSNucor Steel Louisiana LLC | Convent | LA | — | ◇ UNVERIFIED |
| NSNucor Steel Marion, INC. (0351010017) | Marion | OH | — | ◇ UNVERIFIED |
| NSNucor Steel Seattle INC | Seattle | WA | — | ◇ UNVERIFIED |
| NVNucor Vulcraft Group - Grapeland Div | Grapeland | TX | — | ◇ UNVERIFIED |
| NVNucor Vulcraft Group Saint Joe Div | Saint Joe | IN | — | ◇ UNVERIFIED |
| OSOutokumpu Stainless USA LLC | Mount Vernon | AL | — | ◇ UNVERIFIED |
| OSOwen Steel CO | Columbia | SC | — | ◇ UNVERIFIED |
| OSOwen Steel Company | Wilmington | DE | — | ◇ UNVERIFIED |
| OWO W Hubbell & Sons | Ny Mills | NY | — | ◇ UNVERIFIED |
| PWPampa Wind Tower Manufacturing Facility | Pampa | TX | — | ◇ UNVERIFIED |
| PIPirod INC | Plymouth | IN | — | ◇ UNVERIFIED |
| PAPostle Aluminum (p0448) | Cassopolis | MI | — | ◇ UNVERIFIED |
| PMPrime Metals Acquisition LLC - Lucerne Mines | Lucernemines | PA | — | ◇ UNVERIFIED |
| PSProspect Steel Company | Little Rock | AR | — | ◇ UNVERIFIED |
| QQsi | Dothan | AL | — | ◇ UNVERIFIED |
| RHRanch Hand Beeville | Beeville | TX | — | ◇ UNVERIFIED |
| RERepublic Engineered Products INC | Blasdell | NY | — | ◇ UNVERIFIED |
| RMRocky Mountain Steel Mill | Pueblo | CO | — | ◇ UNVERIFIED |
| SISabre Industries | Alvarado | TX | — | ◇ UNVERIFIED |
| SISabre Industries Conroe Tx Facility | Conroe | TX | — | ◇ UNVERIFIED |
| SISabre Industries Towers and Poles | Sioux City | IA | — | ◇ UNVERIFIED |
| STSalem Tube Mfg | Greenville | PA | — | ◇ UNVERIFIED |
| SSSamuel Son and Company (usa) INC | Iuka | MS | — | ◇ UNVERIFIED |
| SSSand Springs | Sand Springs | OK | — | ◇ UNVERIFIED |
| SMSandvik Materials Technology | Houston | TX | — | ◇ UNVERIFIED |
| SFSapulpa Faclty | Sapulpa | OK | — | ◇ UNVERIFIED |
| SGSas Global Fka Sure Alloy Steel Corporation | Warren | MI | — | ◇ UNVERIFIED |
| STSauk Technologies | Saukville | WI | — | ◇ UNVERIFIED |
 Schuff Steel | Lindon | UT | — | ◇ UNVERIFIED |
| Schuff Steel | Bellemont | AZ | — | ◇ UNVERIFIED |
| Schuff Steel CO | Phoenix | AZ | — | ◇ UNVERIFIED |
| Schuff Steel CO | Eloy | AZ | — | ◇ UNVERIFIED |
| Schuff Steel Company | Stockton | CA | — | ◇ UNVERIFIED |
| Schuff Steel Gulf Coast | Humble | TX | — | ◇ UNVERIFIED |
| Schuff Steel Midwest | Ottawa | KS | — | ◇ UNVERIFIED |
| SOSfi of Arkansas | Conway | AR | — | ◇ UNVERIFIED |
| SOSfi of Tennessee | Memphis | TN | — | ◇ UNVERIFIED |
| S1Shape 1820 | Grand Haven | MI | — | ◇ UNVERIFIED |
| SMShugart Manufacturing | Chester | SC | — | ◇ UNVERIFIED |
| SJSmi Joist:cayce | Cayce | SC | — | ◇ UNVERIFIED |
| SRSmi Rebar South Caroliina | Columbia | SC | — | ◇ UNVERIFIED |
| SSSmi Steel LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| STSolar Turbines Turbofab Facility | Channelview | TX | — | ◇ UNVERIFIED |
| SOSouthern Ohio Fabricators | Batavia | OH | — | ◇ UNVERIFIED |
| SPSouthern Post Texas | San Marcos | TX | — | ◇ UNVERIFIED |
| SMSpecial Metals | Princeton | KY | — | ◇ UNVERIFIED |
| SCStandard Coating INC. | Madison Hts | MI | — | ◇ UNVERIFIED |
| SPStar Pipe USA | Coffeyville | KS | — | ◇ UNVERIFIED |
| SDSteel Dynamics Incorporated | Butler | IN | — | ◇ UNVERIFIED |
| SDSteel Dynamics Southwest - Sinton Division | Sinton | TX | — | ◇ UNVERIFIED |
| SDSteel Dynamics Structural | Columbia City | IN | — | ◇ UNVERIFIED |
 Steele Solutions INC | South Milwaukee | WI | — | ◇ UNVERIFIED |
 Steelfab, INC. | York | SC | — | ◇ UNVERIFIED |
| Steelfab INC of Alabama | Roanoke | AL | — | ◇ UNVERIFIED |
| Steelfab, INC. - Texas Division | Durant | OK | — | ◇ UNVERIFIED |
| SISteelfab in Dublin Georgia INC | Dublin | GA | — | ◇ UNVERIFIED |
| SOSteelfab of Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
| Steelfab of Virginia, INC. | Emporia | VA | — | ◇ UNVERIFIED |
| SOSteelfab Oregon, INC. | Spokane | WA | — | ◇ UNVERIFIED |
| SFSteel Fabricators of Monroe LLC | Monroe | LA | — | ◇ UNVERIFIED |
| Steelfab West, INC. | Tangent | OR | — | ◇ UNVERIFIED |
| SKSteel King Industries INC | New London | WI | — | ◇ UNVERIFIED |
| SWSteel Warehouse Company, LLC. | Calvert | AL | — | ◇ UNVERIFIED |
| SGSt George Steel Fabrication INC | Saint George | UT | — | ◇ UNVERIFIED |
| SSStructural Steel of Carolina | Hickory | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Services INC Plant 2 | Meridian | MS | — | ◇ UNVERIFIED |
| SISwva INC | Huntington | WV | — | ◇ UNVERIFIED |
| TCTechalloy CO INC | Union | IL | — | ◇ UNVERIFIED |
| TMTexas Miscellaneous Iron | Oakwood | TX | — | ◇ UNVERIFIED |
| TCThyssenkrupp Crankshaft Company | Veedersburg | IN | — | ◇ UNVERIFIED |
| TTTower Tech | Abilene | TX | — | ◇ UNVERIFIED |
| THTrinity Highway Products LLC | Orangeburg | SC | — | ◇ UNVERIFIED |
| TITrinity Industries Plant 127 Stearns Airport Equip | Fort Worth | TX | — | ◇ UNVERIFIED |
| TCTube City Ims | Norfolk | NE | — | ◇ UNVERIFIED |
| TCTube City Ims/slag Processing | Braddock | PA | — | ◇ UNVERIFIED |
| UIUnistrut International Corporation | Wayne | MI | — | ◇ UNVERIFIED |
| USUnited States Steel Corporationfairfield Pipe Mil | Fairfield | AL | — | ◇ UNVERIFIED |
| UIUniversal Industrial Sales Incorporated- Galvanizing Facility | Lindon | UT | — | ◇ UNVERIFIED |
| UDUS Denro Steels | Baytown | TX | — | ◇ UNVERIFIED |
| UPUS Pipe & Foundry CO | Bessemer | AL | — | ◇ UNVERIFIED |
| USUsp Structural Connectors | Montgomery | MN | — | ◇ UNVERIFIED |
| UCUss Corp/edgar Thomson Works | Braddock | PA | — | ◇ UNVERIFIED |
| UMUss Mon Valley Works - Irvin Plant | West Mifflin | PA | — | ◇ UNVERIFIED |
| USUS Steel Fairless Hills Works | Fairless Hills | PA | — | ◇ UNVERIFIED |
| VCValmont Coatings Oklahoma Galvanizing | Claremore | OK | — | ◇ UNVERIFIED |
| VIValmont Industries INC | Tulsa | OK | — | ◇ UNVERIFIED |
