| MWMarks Welding & Fabricating | Thorsby | AL | — | ◇ UNVERIFIED |
| MWMartin Welding and Fabrication LLC | Contoocook | NH | — | ◇ UNVERIFIED |
| MCMauser Container Services | Blacklick | OH | — | ◇ UNVERIFIED |
| MHMckee Holdings LLC | Sandy | OR | — | ◇ UNVERIFIED |
| MEMerrill Engineering & Integration | Saginaw | MI | — | ◇ UNVERIFIED |
| MIMerrill Iron & Steel South | Springfield | MO | — | ◇ UNVERIFIED |
| MMMesser Machine - Mfg INC | Windom | MN | — | ◇ UNVERIFIED |
| MLMetalCraft LLC | Bantam | CT | — | ◇ UNVERIFIED |
| MTMetal Tech, INC. | Fargo | ND | — | ◇ UNVERIFIED |
| MWMetal Works INC. | Spencer | IA | — | ◇ UNVERIFIED |
| MMMexia Main, East, and West Plants | Mexia | TX | — | ◇ UNVERIFIED |
 Mgt Manufacturing LLC | Springville | AL | — | ◇ UNVERIFIED |
| Mgt Manufacturing LLC | Springville | AL | — | ◇ UNVERIFIED |
| MDMi Dept/natural Resources and Environment | River Rouge | MI | — | ◇ UNVERIFIED |
| MSMid South Industrial INC. | Gregory | TX | — | ◇ UNVERIFIED |
| MMMid-state Machine & Fabricating Corporation | Lakeland | FL | — | ◇ UNVERIFIED |
| MMMid-states Mechanical Services INC | Mankato | MN | — | ◇ UNVERIFIED |
| MAMidwest Automation, INC. | Heavener | OK | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing Corporation | Omaha | NE | — | ◇ UNVERIFIED |
| MSMiguel's Sheet Metal | Los Angeles | CA | — | ◇ UNVERIFIED |
 Miller Welding & Machine CO | Brookville | PA | — | ◇ UNVERIFIED |
| MMMill Man Steel INC | Fontana | CA | — | ◇ UNVERIFIED |
| MMMinnesota Metalworks INC | Perham | MN | — | ◇ UNVERIFIED |
| MMMinnotte Manufacturing Corporation | Trafford | PA | — | ◇ UNVERIFIED |
| MWMk Welding & Fabrication, INC. | Waynesville | OH | — | ◇ UNVERIFIED |
| MWModern Welding Company (0145020338) | Newark | OH | — | ◇ UNVERIFIED |
| MWModern Welding CO of Kentucky INC | War Creek | KY | — | ◇ UNVERIFIED |
| MMModine Mfg/laporte/pemberville | La Porte | IN | — | ◇ UNVERIFIED |
| MMMontgomery Metal Craft INC | Springfield | MO | — | ◇ UNVERIFIED |
| MFMoore Flame Cutting Company | Bloomfield Hills | MI | — | ◇ UNVERIFIED |
| MFMoore's Fiberglass, INC. | Walstonburg | NC | — | ◇ UNVERIFIED |
| MMMoorhead Machinery - Boiler CO | Minneapolis | MN | — | ◇ UNVERIFIED |
| MCMurphy Consolidated Industries INC | Follansbee | WV | — | ◇ UNVERIFIED |
| MDMyers Di Corporation | Barnegat | NJ | — | ◇ UNVERIFIED |
| NPNapa Pipe CORP | Napa | CA | — | ◇ UNVERIFIED |
| NFNash Fabricators INC | Vista | CA | — | ◇ UNVERIFIED |
| NBNational Butane Gas Company, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | San Angelo | TX | — | ◇ UNVERIFIED |
| NWNational Welding Corporation | Midvale | UT | — | ◇ UNVERIFIED |
| NGNci Group INC. | Marietta | GA | — | ◇ UNVERIFIED |
| NHNeil H. Daniels, INC. | Ascutney | VT | — | ◇ UNVERIFIED |
| NINeufeldt Industrial Services INC Dba Neufab | Red Wing | MN | — | ◇ UNVERIFIED |
| NTNewberry Tanks and Equipment, LLC | Memphis | TN | — | ◇ UNVERIFIED |
| NINewfield Industries INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| NCNooter Corp-nooter CORP | Saint Louis | MO | — | ◇ UNVERIFIED |
| NANorth American Construction Services, LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| NANorth American Construction Services, LTD. | Birmingham | AL | — | ◇ UNVERIFIED |
| NMNorthstar Metalworks, INC | Brainerd | MN | — | ◇ UNVERIFIED |
| NSNorthstar Steel Fab. INC | Rhinelander | WI | — | ◇ UNVERIFIED |
| NINrlj, INC. | Browns Summit | NC | — | ◇ UNVERIFIED |
| NCNuclear Containers, Inc., Esp/cbc Div. | Elizabethton | TN | — | ◇ UNVERIFIED |
| NNucraft | Roscommon | MI | — | ◇ UNVERIFIED |
| OOO'brien Oilfield Services, LLC | Belfield | ND | — | ◇ UNVERIFIED |
| OIOdom Industries, INC | Milford | OH | — | ◇ UNVERIFIED |
| OIOfab, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| OOhmstede | La Porte | TX | — | ◇ UNVERIFIED |
| OIOlson Iron & Stone Creations LLC | Elk River | MN | — | ◇ UNVERIFIED |
| OEOri Enterprises LLC | Price | UT | — | ◇ UNVERIFIED |
| PTPalmer Tool Company | Camden | TN | — | ◇ UNVERIFIED |
| PMParagon Model Shop Inc. | Freeport | MI | — | ◇ UNVERIFIED |
| PCParlee Cycles, Inc. | Beverly | MA | — | ◇ UNVERIFIED |
| PCParsons Constructors Site | Pasco | WA | — | ◇ UNVERIFIED |
| PWPatterson Welding Works, INC. | Artesia | NM | — | ◇ UNVERIFIED |
| PDPee Dee Tank Company of South Carolina LLC | Florence | SC | — | ◇ UNVERIFIED |
| PIPegasus, INC. | Holliston | MA | — | ◇ UNVERIFIED |
| PTPepper Tank & Contracting | Casper | WY | — | ◇ UNVERIFIED |
| PSPerforated Screen Surfaces, INC. | Conklin | NY | — | ◇ UNVERIFIED |
| PVPerry Videx LLC | Hainesport | NJ | — | ◇ UNVERIFIED |
| PEPetrosmith Equipment Abilene Facility | Abilene | TX | — | ◇ UNVERIFIED |
| PUPfi Usa, LLP | Greenville | OH | — | ◇ UNVERIFIED |
| PHPicard Holding USA | Battle Creek | MI | — | ◇ UNVERIFIED |
| PVPinson Valley Fabricators, INC. | Other | AL | — | ◇ UNVERIFIED |
| PMPitt-des Moines, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| PCPlant City Steel CO | Plant City | FL | — | ◇ UNVERIFIED |
| PNPlasan North America | Walker | MI | — | ◇ UNVERIFIED |
| PEPlastic Extruded Parts INC | Nassau | NY | — | ◇ UNVERIFIED |
| PCPlate Cut, INC. | Houston | TX | — | ◇ UNVERIFIED |
| PFPlatinum Fabrication, LLC | Heavener | OK | — | ◇ UNVERIFIED |
| P1Plt 18 | Oklahoma City | OK | — | ◇ UNVERIFIED |
| PFPoole Fisheries, INC | Marathon | FL | — | ◇ UNVERIFIED |
| PPPrecision Plating of Quincy INC | Quincy | IL | — | ◇ UNVERIFIED |
| PEPremier Equipment - American Pulley | Leeds | AL | — | ◇ UNVERIFIED |
| PRPremiere Rack Solutions, INC. | Dublin | CA | — | ◇ UNVERIFIED |
| PMPremier Manufacturing Corporation | Addison | IL | — | ◇ UNVERIFIED |
| PFPro Fabrication INC | Madison Lake | MN | — | ◇ UNVERIFIED |
| PIPsf Industries | Seattle | WA | — | ◇ UNVERIFIED |
| PSPsi Sales INC | Irvington | AL | — | ◇ UNVERIFIED |
| PIPvi Industries Incorporat | Fort Worth | TX | — | ◇ UNVERIFIED |
| QFQuality Fab of Emily INC | Emily | MN | — | ◇ UNVERIFIED |
| QSQuality Steel | Cleveland | MS | — | ◇ UNVERIFIED |
| QSQuality Steel Corporation- Fuel Storage Tank Manufacturing Plant | West Jordan | UT | — | ◇ UNVERIFIED |
| QMQuest Metal Solutions | Fort Worth | TX | — | ◇ UNVERIFIED |
| RIRack Industries, LLC | Midland | TX | — | ◇ UNVERIFIED |
| RCRadius Concepts LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| RIRaughley, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| RIRcs Industries INC | Riverside | CA | — | ◇ UNVERIFIED |
| RRRed River Precision Mfg., Inc. | Round Rock | TX | — | ◇ UNVERIFIED |
| RTReliance Truck & Equipment LTD | San Antonio | TX | — | ◇ UNVERIFIED |
| RMReynolds Manufacturing Company | Avonmore | PA | — | ◇ UNVERIFIED |
| RFRichard's Fab Shop LLC | Sumter | SC | — | ◇ UNVERIFIED |
