| MMMohawk Metal Company | Eugene | OR | — | ◇ UNVERIFIED |
| MMMolt Manufacturing, INC. | Spalding | NE | — | ◇ UNVERIFIED |
| MSMonroe Staffing Services, LLC | Hudson | MA | — | ◇ UNVERIFIED |
| MLMonrreal-Macias LLC | Bell Gardens | CA | — | ◇ UNVERIFIED |
| MFMontell Fabrication and Rebuild, LLC | Deming | NM | — | ◇ UNVERIFIED |
| MMMontel Metals | Jeffersonville | IN | — | ◇ UNVERIFIED |
| MMMorehead Machining, INC. | Morehead | KY | — | ◇ UNVERIFIED |
| MFMorgan Fabrication | Oklahoma City | OK | — | ◇ UNVERIFIED |
| MPMorgan Performance | Spring | TX | — | ◇ UNVERIFIED |
| MIMorrill Industries, INC | Escalon | CA | — | ◇ UNVERIFIED |
| MMMorris Metal Shaping LLC | Emeryville | CA | — | ◇ UNVERIFIED |
| MMMortech Manufacturing | Azusa | CA | — | ◇ UNVERIFIED |
| MCMotor City Racks, LLC | Laurens | SC | — | ◇ UNVERIFIED |
| MFMountain Forge Inc, the | Truckee | CA | — | ◇ UNVERIFIED |
| MPMountain Performance INC | Draper | UT | — | ◇ UNVERIFIED |
| MWMpack Winthrop Corporation | Alsip | IL | — | ◇ UNVERIFIED |
| MMM.P.H. Metals Processing Inc. | Mechanicville | NY | — | ◇ UNVERIFIED |
| MMMp Magnetics | Fort Worth | TX | — | ◇ UNVERIFIED |
| MBMr. Bronze CO. LLC | Miami Springs | FL | — | ◇ UNVERIFIED |
| MLMsatt, LLC | Richmond | IL | — | ◇ UNVERIFIED |
| MSMulich Services LLC | Bonner Springs | KS | — | ◇ UNVERIFIED |
| MIMunroe, Incorporated | Pittsburgh | PA | — | ◇ UNVERIFIED |
| MLMurphree Leasing LLC | Bristol | WI | — | ◇ UNVERIFIED |
| MTMuskogee Technology | Atmore | AL | — | ◇ UNVERIFIED |
| MWM - W Fab INC. Dba Ace Fabrication and Machine, in | Smithfield | NC | — | ◇ UNVERIFIED |
| MIMyrtle Industries INC | Jackson | MI | — | ◇ UNVERIFIED |
| MIMy-signguy.com, INC. | Glenview | IL | — | ◇ UNVERIFIED |
| NMN.a. Metal Services INC. | Rockland | MA | — | ◇ UNVERIFIED |
| NMNano Manufacturing INC | North Branch | MN | — | ◇ UNVERIFIED |
| NCNapa County Roads | Napa | CA | — | ◇ UNVERIFIED |
| NMNational Metal Fabrication INC | Ontario | CA | — | ◇ UNVERIFIED |
| NPNational Products INC 1025 S Elmgrove St | Seattle | WA | — | ◇ UNVERIFIED |
| NPNational Products S Elmgrove | Seattle | WA | — | ◇ UNVERIFIED |
| NSNational Sintered Alloys Incorporated | Clinton | CT | — | ◇ UNVERIFIED |
| NSNational Sintered Alloys Incorporated | Clinton | CT | — | ◇ UNVERIFIED |
| NHNb Handy | Lynchburg | VA | — | ◇ UNVERIFIED |
| NDN.c. Dac - Correction Enterprises (franklin) Sign Plant | Bunn | NC | — | ◇ UNVERIFIED |
| NCNch Corporation | Lancaster | TX | — | ◇ UNVERIFIED |
| NMNc Manufacturing | Crestview | FL | — | ◇ UNVERIFIED |
| NCNeapco Components | Beatrice | NE | — | ◇ UNVERIFIED |
| NINelco, INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| NANelson Avenue | Concord | CA | — | ◇ UNVERIFIED |
| NGNelson Global Products | Greenwood | IN | — | ◇ UNVERIFIED |
| NWNelson Williams Linings INC | Mountain Iron | MN | — | ◇ UNVERIFIED |
| NFNeo Fab LLC / Neo Fab Metal Fabrication Facility | Miami | OK | — | ◇ UNVERIFIED |
| NBNew Business Systems, Inc. | Amityville | NY | — | ◇ UNVERIFIED |
| NDNew Deal Metal Buildings, LLC | Denham Springs | LA | — | ◇ UNVERIFIED |
| NENew England Awards and Trophies | Woodstock | CT | — | ◇ UNVERIFIED |
| NENew England Wirecloth Company, INC. | Fitchburg | MA | — | ◇ UNVERIFIED |
| NFNewport Fabricators INC | Green Lane | PA | — | ◇ UNVERIFIED |
| NCNexGen Composites, LLC | Franklin | OH | — | ◇ UNVERIFIED |
| NIN-fab, INC. | Houston | TX | — | ◇ UNVERIFIED |
| NINGU Industries L.L.C. | Concord | NC | — | ◇ UNVERIFIED |
| NMNicholas Malkoch | Clayton | NC | — | ◇ UNVERIFIED |
| NBNifty Bar Grinding & Cutting Solutions, Inc. | Penfield | NY | — | ◇ UNVERIFIED |
| NINikkel Iron Works INC | Shafter | CA | — | ◇ UNVERIFIED |
| NBNiles Building Products INC. | Niles | OH | — | ◇ UNVERIFIED |
| NLNineThree010, LLC | Logan | UT | — | ◇ UNVERIFIED |
| NMNiron Magnetics INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| NMNiron Magnetics-sartell | Sartell | MN | — | ◇ UNVERIFIED |
| NNNobelclad New Stockpile | Dunbar | PA | — | ◇ UNVERIFIED |
| NWNoble Welding & Mfg INC | Centerville | MN | — | ◇ UNVERIFIED |
| NANordson Asymtek | Vista | CA | — | ◇ UNVERIFIED |
| NFNorell Foundry & Machine INC | Franklin | NH | — | ◇ UNVERIFIED |
| NINorfolk Iron and Metal | New Century | KS | — | ◇ UNVERIFIED |
| NANorth American Waste Management Usa, LLC | Saco | ME | — | ◇ UNVERIFIED |
| NMNorthbridge Mills LLC | Northbridge | MA | — | ◇ UNVERIFIED |
| NCNorth County Iron Corp. | Groveton | NH | — | ◇ UNVERIFIED |
| NENorth East Fabrication Company INC | Jonesville | MI | — | ◇ UNVERIFIED |
| NSNorthern Steel Manufacturing LLC | Elcho | WI | — | ◇ UNVERIFIED |
| NHNorth Houston Machine, INC. | Tomball | TX | — | ◇ UNVERIFIED |
| NSNorth Silsbee Facility | Silsbee | TX | — | ◇ UNVERIFIED |
| NSNorth Star Cart Company | Brooklyn Center | MN | — | ◇ UNVERIFIED |
| NSNorth Star Propellers INC | San Diego | CA | — | ◇ UNVERIFIED |
| NINorthwest Industries, INC. | Russellville | AL | — | ◇ UNVERIFIED |
| NPNorthwest Precision Fabricators INC | Oregon City | OR | — | ◇ UNVERIFIED |
| NMNorwest Manufacturing Equipment LLC | Rupert | ID | — | ◇ UNVERIFIED |
| NANose and Mustache LLC | Markle | IN | — | ◇ UNVERIFIED |
| NSNova Services INC. | Toledo | OH | — | ◇ UNVERIFIED |
| NBNSG Browns, LLC | Topeka | KS | — | ◇ UNVERIFIED |
| NLNsjs LLC | Dallas | TX | — | ◇ UNVERIFIED |
| NLNucfil, LLC | Golden | CO | — | ◇ UNVERIFIED |
| NTNutec Tooling Sys | Meadville | PA | — | ◇ UNVERIFIED |
| NFNW Fluid Power & Controls Co. LLC | Auburn | WA | — | ◇ UNVERIFIED |
| NMNymar Manufacturing Co., INC. | Randolph | NJ | — | ◇ UNVERIFIED |
| OBO.a. Both CORP Dba Schlenk Metalic Pigments (stormwater) | Lawrence | KS | — | ◇ UNVERIFIED |
| OAOakwalk Apartments | Emeryville | CA | — | ◇ UNVERIFIED |
| OLObi Linings INC | Chocowinity | NC | — | ◇ UNVERIFIED |
| OEOceanside Engineering Mfg | Oceanside | CA | — | ◇ UNVERIFIED |
| OEOec Engineering Corporation | Chantilly | VA | — | ◇ UNVERIFIED |
| OFOem Fabricators INC | Baldwin | WI | — | ◇ UNVERIFIED |
| OAOffroad Addiction, Inc | Oklahoma City | OK | — | ◇ UNVERIFIED |
| OSOffshore Spars Co. | Chesterfield | MI | — | ◇ UNVERIFIED |
| OMOhio Match CO | Mancos | CO | — | ◇ UNVERIFIED |
| OMOhio Metal Technologies INC | Hebron | OH | — | ◇ UNVERIFIED |
| OKOh Keys | Bethany | OK | — | ◇ UNVERIFIED |
| OPOh & Payne Intl. LLC. | Norcross | GA | — | ◇ UNVERIFIED |
| OOldcastle | Egg Harbor City | NJ | — | ◇ UNVERIFIED |
| OSOld Sole Fabrication INC | Denver | CO | — | ◇ UNVERIFIED |
| OSOld South Fabricators L.l.c. | Lecompte | LA | — | ◇ UNVERIFIED |
