| NSNational Steel Rule | Linden | NJ | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| NPNaylor Pipe CO | Chicago | IL | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| NSNelsen Steel & Wire LP | Franklin Park | IL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| NPNlmk Pennsylvania Lcc | Farrell | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| NCNucor Corporation | Norfolk | NE | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| NCNucor CORP Vulcraft Div | Brigham City | UT | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
Nucor Steel Memphis INC | Memphis | TN | Primary Metal Manufacturing331221 | 500+ | ◐ LIKELY ACTIVE |
| NWNucor Wire Products Missouri | Maryville | MO | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| OPOhio Pickling & Processing | Toledo | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| RSRepublic Steel Wire Processing, LLC | Solon | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| RSReynolds Services INC | Greenville | PA | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| SSSamuel Steel Pickling CO | Twinsburg | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| SCShalmet CORP | Elyria | OH | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
Skyline Steel LLC. - Geo Pomona | Pomona | CA | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| SMSoudan Metals Company INC. | Chicago | IL | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Smyrna | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| SWSteel Warehouse of Ohio LLC | Cleveland | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| SWSteel Warehouse of Ohio LLC | Cleveland | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| SASteward Advanced Materials LLC | Chattanooga | TN | Nonmetallic Mineral Product Manufacturing327999 | 20-99 | ◐ LIKELY ACTIVE |
| SFSystems Fab & Machine, INC. | El Dorado | AR | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| TMTalley Metals Technology | Mcbee | SC | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| TDT & D Metal Products | Watseka | IL | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| TITdy Industries LLC - Ati Firth Sterling | Huntsville | AL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| UFUrick Foundry Co/erie | Erie | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| UGUS Gypsum Corporation Auburn | Auburn | WA | Nonmetallic Mineral Product Manufacturing327420 | 20-99 | ◐ LIKELY ACTIVE |
| VPVoestalpine Precision Strip LLC | Pleasant Prairie | WI | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| WEWenthe-davidson Engineering CO | New Berlin | WI | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| WCWismarq CORP | Jackson | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| WSWmc Steel | Conroe | TX | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| WCWorthington Cylinders Mississippi LLC | New Albany | MS | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| BSBanker Steel - Orlando | Orlando | FL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| CGCtb Grain Systems-ctb Grain Systems | Kansas City | MO | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| DIDynamet Incorporated | Washington | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| ESElgiloy Specialty Metals | Hampshire | IL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| KWKreher Wire Processing | Romulus | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| LCLiverpool Coil Processing | Valley City | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| MCMaclean-fogg Component Systems | Mundelein | IL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| MSMain Steel Polishing CO INC | Elk Grove Village | IL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| MIMetal Industries LLC | Bushnell | FL | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| MIMubea INC. | Florence | KY | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| PKPrecision Kidd Steel CO | Aliquippa | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| PRProgress Rail | Atchison | KS | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| SSSandvik Steel CO | Benton Harbor | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
Skyline Steel | Belpre | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
Skyline Steel Llc-cartersville | Cartersville | GA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies INC | Madison | MS | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Ghent | KY | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Murfreesboro | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Greensburg | IN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies Llc-treatment Plant #1 | Crawfordsville | IN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |