| MIMcr Industries LLC | Morristown | TN | — | ◇ UNVERIFIED |
| MFMercedes Fabricating, INC. | Chicago Heights | IL | — | ◇ UNVERIFIED |
| MMMerchants Metals INC | Fairfield | AL | — | ◇ UNVERIFIED |
| MNMesabi Nugget Delaware LLC | Aurora | MN | — | ◇ UNVERIFIED |
 Metal Culverts INC M & M Highway Materials Div | Columbia | MO | — | ◇ UNVERIFIED |
| MSMetaldyne Sintered Ridgway LLC | Emporium | PA | — | ◇ UNVERIFIED |
| MPMetal Powder Prod/st Marys | Saint Marys | PA | — | ◇ UNVERIFIED |
| MRMetal Resource INC. | Hinsdale | IL | — | ◇ UNVERIFIED |
| MSMetal Sales Manufacturing Corporation | Otsego | MN | — | ◇ UNVERIFIED |
| MSMetrock Steel & Wire CO. | Montevallo | AL | — | ◇ UNVERIFIED |
| MMMetroplex Metal Fabrication | Mesquite | TX | — | ◇ UNVERIFIED |
| MSMetro Steel and Pipe Supply, INC | Leesburg | FL | — | ◇ UNVERIFIED |
| MSMetro Steel & Pipe Supply, INC. | Tavares | FL | — | ◇ UNVERIFIED |
| MIMetzgermoore, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| MIMgf Industries | Rockford | IL | — | ◇ UNVERIFIED |
| MIMgf Industries LLC | Rockford | IL | — | ◇ UNVERIFIED |
| MVMiami Valley Steel Service, INC. | Piqua | OH | — | ◇ UNVERIFIED |
| MCMichels & CO Furniture Mfg | Lynwood | CA | — | ◇ UNVERIFIED |
| MSMichigan Steel Industries INC Dba Michigan Steel Strapping | Taylor | MI | — | ◇ UNVERIFIED |
| MMMicron Manufacturing Inc. | LaGrange | OH | — | ◇ UNVERIFIED |
| MCMid-continent Coal & Coke | Portage | IN | — | ◇ UNVERIFIED |
| MCMid Continent Steel & Wire, INC. | Poplar Bluff | MO | — | ◇ UNVERIFIED |
| MIMid-state Industries Operating, INC. | Arcola | IL | — | ◇ UNVERIFIED |
| MFMid-west Fabricating Co, West Bent Bolt | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| MIMidwest Industrial Contract Services LLC | Youngstown | OH | — | ◇ UNVERIFIED |
| MIMidwest Industrial Contract Services, LLC | Girard | OH | — | ◇ UNVERIFIED |
| MSMidwest Scrap Management INC | Kansas City | MO | — | ◇ UNVERIFIED |
| MMMillerbernd Manufacturing Company | Winsted | MN | — | ◇ UNVERIFIED |
| MSMil Spe Magnetics INC | Pomona | CA | — | ◇ UNVERIFIED |
| MIMiranda Iron Works Inc. | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| MMMission Metals | Rialto | CA | — | ◇ UNVERIFIED |
| MSMiss Steel LLC | Mechanicville | NY | — | ◇ UNVERIFIED |
| MSMiss Steel LLC | Clifton Park | NY | — | ◇ UNVERIFIED |
| MAMj Associates Steel Co., INC. | Philadelphia | PA | — | ◇ UNVERIFIED |
| MIMK Industries, LLC | Seattle | WA | — | ◇ UNVERIFIED |
| MMMk Metalfoils USA INC | Duncan | SC | — | ◇ UNVERIFIED |
| MPMmi Products INC | Bartonville | IL | — | ◇ UNVERIFIED |
| MMM & M Precision LLC | Lockport | NY | — | ◇ UNVERIFIED |
| MWMoffat Wire & Display, INC. | Addison | IL | — | ◇ UNVERIFIED |
| MTMonski Tool* | Elmhurst | IL | — | ◇ UNVERIFIED |
| MSMounsey Steel Products | Erie | MI | — | ◇ UNVERIFIED |
| MIMtm Industrial | Oceanside | CA | — | ◇ UNVERIFIED |
| MIMubea INC | Florence | KY | — | ◇ UNVERIFIED |
| MIMubea INC. | Florence | KY | — | ◇ UNVERIFIED |
| MEMvi Engineering & Manufacturing INC | Ontario | CA | — | ◇ UNVERIFIED |
| MAMzg Associates Ii LLC | Chicago Heights | IL | — | ◇ UNVERIFIED |
| NCNamasco Corporation | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| NPNamco Precision Corp | Seattle | WA | — | ◇ UNVERIFIED |
| NMNational Material CO | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| NMNational Material Processing | East Chicago | IN | — | ◇ UNVERIFIED |
| NMNational Material Processing, LLC | Chicago | IL | — | ◇ UNVERIFIED |
| NPNational Processing Company | Chicago | IL | — | ◇ UNVERIFIED |
| NSNational Standard Company | Mishawaka | IN | — | ◇ UNVERIFIED |
| NCNational-standard Company | Corbin | KY | — | ◇ UNVERIFIED |
| NSNational Steel Fabricators | Rice Lake | WI | — | ◇ UNVERIFIED |
| NWNational Wire & Cable CORP | Los Angeles | CA | — | ◇ UNVERIFIED |
| NRNatl Roll Co/vertical Seal CO | Pleasantville | PA | — | ◇ UNVERIFIED |
| NANew Age Design & Tool, Inc. | Lagrange | OH | — | ◇ UNVERIFIED |
| NCNewark Carting INC | Newark | NJ | — | ◇ UNVERIFIED |
| NBNew Boston Coke CORP | New Boston | OH | — | ◇ UNVERIFIED |
| NPNew Process Steel - Nps | Alsip | IL | — | ◇ UNVERIFIED |
| NLNiagara Lasalle Corporation | Chattanooga | TN | — | ◇ UNVERIFIED |
| NLNiagara Lasalle Corporation | Hammond | IN | — | ◇ UNVERIFIED |
| NBNibco - Blytheville Division | Blytheville | AR | — | ◇ UNVERIFIED |
| NBNielsen & Bainbridge, LLC. | Bridgeview | IL | — | ◇ UNVERIFIED |
| NANorth American Stainless | Ghent | KY | — | ◇ UNVERIFIED |
| NANorth American Steel & Wire INC | Butler | PA | — | ◇ UNVERIFIED |
| NCNorth Coast Steel LLC | Willoughby | OH | — | ◇ UNVERIFIED |
| NENorthern Empire, LLC | Walker | MN | — | ◇ UNVERIFIED |
| NSNorth South Machinery INC. | La Mirada | CA | — | ◇ UNVERIFIED |
| NSNorth Star Steel Arizona | Golden Valley | AZ | — | ◇ UNVERIFIED |
| NSNorthwestern Steel & Wire CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| NNNortrak North America | Chicago Heights | IL | — | ◇ UNVERIFIED |
| NNNsci Nippon Steel & Sumikin Cold Heading Wire Indiana | Shelbyville | IN | — | ◇ UNVERIFIED |
| NTNss Technologies, INC. | Tyler | TX | — | ◇ UNVERIFIED |
| NCNucor Castrip Arkansas, LLC | Blytheville | AR | — | ◇ UNVERIFIED |
| NCNucor Cold Finishing | Darlington | SC | — | ◇ UNVERIFIED |
| NCNucor Corporation Steel Mill | Plymouth | UT | — | ◇ UNVERIFIED |
| NDNucor Dc Warehouse | Birmingham | AL | — | ◇ UNVERIFIED |
| NGNucor Gallatin Steel LLC | Ghent | KY | — | ◇ UNVERIFIED |
| NSNucor Steel Birmingham, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| NSNucor Steel Fl INC | Avon Park | FL | — | ◇ UNVERIFIED |
| NSNucor Steel Longview | Longview | TX | — | ◇ UNVERIFIED |
 Nucor Steel Memphis INC | Memphis | TN | — | ◇ UNVERIFIED |
| NSNucor Steel West Virginia LLC | Apple Grove | WV | — | ◇ UNVERIFIED |
| NTNupro Tech LLC | Lebanon | PA | — | ◇ UNVERIFIED |
| NWNutmeg Wire, INC. | Baltic | CT | — | ◇ UNVERIFIED |
| OWO'brien Wire Products of Texas, INC. | Houston | TX | — | ◇ UNVERIFIED |
| OCOhio Cold Rolling Company LLC | Yorkville | OH | — | ◇ UNVERIFIED |
| OFOil Field Pipe and Supply CO. | Springfield | MO | — | ◇ UNVERIFIED |
| OKO & K American CORP. | Chicago | IL | — | ◇ UNVERIFIED |
| OGOld Guard Industrial Group, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| OSOld School Services | Henderson | TX | — | ◇ UNVERIFIED |
| OMOlympic Metal Cutting | Montebello | CA | — | ◇ UNVERIFIED |
| OSOlympic Steel INC | Detroit | MI | — | ◇ UNVERIFIED |
| OMOmco Midwest Roll Forming | Pierceton | IN | — | ◇ UNVERIFIED |
| OPOmni Products, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| OMO'neal Manufacturing Services | Ambridge | PA | — | ◇ UNVERIFIED |
| OSOps Sales Company | Birmingham | AL | — | ◇ UNVERIFIED |
| OUOpta USA Inc/affival INC | New Kensington | PA | — | ◇ UNVERIFIED |
