| MIMetal-fab INC | Champaign | IL | — | ◇ UNVERIFIED |
| MIMetal Industries, INC | Crystal River | FL | — | ◇ UNVERIFIED |
| MMMetal Masters of North Florida INC | Jacksonville | FL | — | ◇ UNVERIFIED |
 Metalor Technologies USA | Port Huron | MI | — | ◇ UNVERIFIED |
| MPMetal Processors INC | Jackson | MS | — | ◇ UNVERIFIED |
| MPMetal Pros | Wichita | KS | — | ◇ UNVERIFIED |
| MPMetals & Plastics INC | Longwood | FL | — | ◇ UNVERIFIED |
| MUMetals USA Mobile | Mobile | AL | — | ◇ UNVERIFIED |
| MIMetaltech Industries INC | Longmont | CO | — | ◇ UNVERIFIED |
| MSMetropolitan Steel I/steelco | Sinking Spring | PA | — | ◇ UNVERIFIED |
| MMMetso Minerals | Milwaukee | WI | — | ◇ UNVERIFIED |
| MUMeyer Utility Structures | Clinton | IL | — | ◇ UNVERIFIED |
| MAMfs Arz | Phoenix | AZ | — | ◇ UNVERIFIED |
| MGM & G Duravent INC | Vacaville | CA | — | ◇ UNVERIFIED |
| MAMichael Anthony Jewelers Incorporated | Mount Vernon | NY | — | ◇ UNVERIFIED |
| MWMichigan Wire Die | Warren | MI | — | ◇ UNVERIFIED |
| MAMid America Steel Inc-fargo | Fargo | ND | — | ◇ UNVERIFIED |
| MAMiddle Atlantic Products, INC. | Fairfield | NJ | — | ◇ UNVERIFIED |
| MMMidland Metals Products | Chicago | IL | — | ◇ UNVERIFIED |
| MIMid-park INC - Mid-park Highway | Leitchfield | KY | — | ◇ UNVERIFIED |
| MFMid-south Fabrications INC | Jemison | AL | — | ◇ UNVERIFIED |
| MSMid States Steel Products CO | Lexington | KY | — | ◇ UNVERIFIED |
| MSMidstate Steel, INC. | Macon | GA | — | ◇ UNVERIFIED |
| MSMidwestern Steel Fabricators Chicago LLC | Hammond | IN | — | ◇ UNVERIFIED |
| MIMidwest Industrial Metals | Northlake | IL | — | ◇ UNVERIFIED |
| MMMidwest Machine Products INC | Golden | CO | — | ◇ UNVERIFIED |
| MFMikes Fabricating Incorporated | Moody | AL | — | ◇ UNVERIFIED |
| MIMiller/greeneville INC. | Greeneville | TN | — | ◇ UNVERIFIED |
| MIMiller Industrial | Kokomo | IN | — | ◇ UNVERIFIED |
| MFMillers Fab & Weld Corporation | Riverside | CA | — | ◇ UNVERIFIED |
| MFMillinocket Fabrication & Machine INC | Millinocket | ME | — | ◇ UNVERIFIED |
| MCMills CO | Upper Sandusky | OH | — | ◇ UNVERIFIED |
 Mills Manufacturing INC | Earlville | IA | — | ◇ UNVERIFIED |
| MUMinova USA INC | South Point | OH | — | ◇ UNVERIFIED |
| MMMisener Marine Construction, INC. | Tampa | FL | — | ◇ UNVERIFIED |
| MDMissouri Dry Dock & Repair CO | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| MVMissouri Valley Steel Company | Sioux City | IA | — | ◇ UNVERIFIED |
| MCMjk Custom Fab and Coatings LLC | Ogden | UT | — | ◇ UNVERIFIED |
| MSMka Spray Service | Lawrence | MA | — | ◇ UNVERIFIED |
| MMMk Metal Products Enterprises INC | Mansfield | OH | — | ◇ UNVERIFIED |
| MMModern Mechanical Fabrication INC | Champlain | NY | — | ◇ UNVERIFIED |
| MWModern Welding CO of Kentucky INC | Hardin County | KY | — | ◇ UNVERIFIED |
| MCModineer Coatings Division South | South Bend | IN | — | ◇ UNVERIFIED |
 Modine Manufacturing CO | Clinton | TN | — | ◇ UNVERIFIED |
| MMModine Mfg CO - Former Site of | Washington | IA | — | ◇ UNVERIFIED |
| MWMonarch Ware INC | Algoma | WI | — | ◇ UNVERIFIED |
| MPMonitor Products INC | Hauppauge | NY | — | ◇ UNVERIFIED |
| MIMonti Incorporated | Cincinnati | OH | — | ◇ UNVERIFIED |
| MDMoore Dp, LLC | Lexington | KY | — | ◇ UNVERIFIED |
| MMMoreng Metal Products | Totowa | NJ | — | ◇ UNVERIFIED |
| MPMorgan Products | Valencia | CA | — | ◇ UNVERIFIED |
| MIMoritz International INC. (0370010048) | Mansfield | OH | — | ◇ UNVERIFIED |
| MIMor/ryde International INC | Elkhart | IN | — | ◇ UNVERIFIED |
| MFMountaineer Fabricators INC | Nitro | WV | — | ◇ UNVERIFIED |
| MSMountain States Sheet Metal | Pueblo | CO | — | ◇ UNVERIFIED |
| MRMowata Rice Drier INC - Southern Rice Drier & Storage CO | Rayne | LA | — | ◇ UNVERIFIED |
| MIMsm Industries Incorporated | North Reading | MA | — | ◇ UNVERIFIED |
| MSM. Swift & Sons Gold Leaf | Hartford | CT | — | ◇ UNVERIFIED |
| MMMulberry Manufacturing CO | Mulberry | FL | — | ◇ UNVERIFIED |
| MPMulti-craft Plastics | Portland | OR | — | ◇ UNVERIFIED |
| MSMunster Steel Company | Munster | IN | — | ◇ UNVERIFIED |
| NCNai Cranes LLC | Woburn | MA | — | ◇ UNVERIFIED |
| NMNambe Mills, INC. | Espanola | NM | — | ◇ UNVERIFIED |
| NPNanoprecision Products | El Segundo | CA | — | ◇ UNVERIFIED |
| NPNapa Pipe CORP | Napa | CA | — | ◇ UNVERIFIED |
| NVNashoba Valley Structural | Lunenburg | MA | — | ◇ UNVERIFIED |
| NTNational Tube Form | Fort Wayne | IN | — | ◇ UNVERIFIED |
| NBNci Bldg Sys Inc/ambridge | Ambridge | PA | — | ◇ UNVERIFIED |
| NMNci Mfg, INC. | Scottsboro | AL | — | ◇ UNVERIFIED |
| NPNekoosa Packaging, Memphis Boxplant | Memphis | TN | — | ◇ UNVERIFIED |
| NGNelson Global - Fortune Circle | Indianapolis | IN | — | ◇ UNVERIFIED |
| NUNeoplan USA CORP | Lamar | CO | — | ◇ UNVERIFIED |
| NMNew Millenium Building Systems | Continental | OH | — | ◇ UNVERIFIED |
| NMNew Millennium Building System S INC | Florence | SC | — | ◇ UNVERIFIED |
| NNNewport News Shipbuilding Oakland Industrial Oip | Newport News | VA | — | ◇ UNVERIFIED |
| NLNext Level Metal | Baldwin | IL | — | ◇ UNVERIFIED |
| NPNickelson Plastics INC | Osceola | WI | — | ◇ UNVERIFIED |
| NWNiermann Weeks Company, INC | Millersville | MD | — | ◇ UNVERIFIED |
| NINmi Industrial Holdings INC | Sacramento | CA | — | ◇ UNVERIFIED |
| NMNolin Milling INC | Dickens | IA | — | ◇ UNVERIFIED |
| NNNoll Norwesco LLC | Fife | WA | — | ◇ UNVERIFIED |
| NMNor-cal Metal Fabricators | Oakland | CA | — | ◇ UNVERIFIED |
| NINorcold INC * | Gettysburg | OH | — | ◇ UNVERIFIED |
| NANorth American Kitchen Solutions, INC. | Dallas | GA | — | ◇ UNVERIFIED |
| NMNorthern Metal Fab INC | Baldwin | WI | — | ◇ UNVERIFIED |
| NPNorthern Plains Steel CO | Fargo | ND | — | ◇ UNVERIFIED |
| NMNorth Marina Bayside Abw Site | Everett | WA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Ship Systems INC | Waggaman | LA | — | ◇ UNVERIFIED |
| NSNorthshore Steel INC | Two Harbors | MN | — | ◇ UNVERIFIED |
| NSNorth State Steel Incorporated | Greenville | NC | — | ◇ UNVERIFIED |
| NSNorthwest Steel Fab INC Deer Park | Deer Park | WA | — | ◇ UNVERIFIED |
| NMNorthwoods Manufacturing INC | Kingsford | MI | — | ◇ UNVERIFIED |
| NANov Ameron Tulsa Pole Products Welding & Fabrication | Tulsa | OK | — | ◇ UNVERIFIED |
| NINovatec INC | Brooklyn | MD | — | ◇ UNVERIFIED |
| NINov Intelliserv. | Provo | UT | — | ◇ UNVERIFIED |
| NFNuair Filter CO LLC | Normal | IL | — | ◇ UNVERIFIED |
| NENu-life Environmental INC | Easley | SC | — | ◇ UNVERIFIED |
| NINu-way Industries INC | Des Plaines | IL | — | ◇ UNVERIFIED |
| NTNwl Transformers, INC. | Florence | NJ | — | ◇ UNVERIFIED |
| OSOakland Stamping LLC | Detroit | MI | — | ◇ UNVERIFIED |
