| MIMadison INC / 8500 New Sapulpa Rd | Tulsa | OK | — | ◇ UNVERIFIED |
| MIMadison Industries | Los Angeles | CA | — | ◇ UNVERIFIED |
| MPMagga Products Company INC | Holly Hill | FL | — | ◇ UNVERIFIED |
| MMMagnuson Metals Utah, LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| MIMaine Industrial Tire | Gorham | ME | — | ◇ UNVERIFIED |
| MPMajestic Products Company | Huntington | IN | — | ◇ UNVERIFIED |
| MTManchester Tank and Equipment | Petersburg | VA | — | ◇ UNVERIFIED |
| MTManchester Tank & Equipment CO | Bedford | IN | — | ◇ UNVERIFIED |
| MTManchester Tank & Equipment CO | Elkhart | IN | — | ◇ UNVERIFIED |
| MSManitex Sabre INC | Knox | IN | — | ◇ UNVERIFIED |
| MHMann & Hummel USA INC. | South Bend | IN | — | ◇ UNVERIFIED |
| MMMann Made Products | Waterville | KS | — | ◇ UNVERIFIED |
| MTMapp Technologies, L.l.c. | Joplin | MO | — | ◇ UNVERIFIED |
| MIMar-bal INC | Chagrin Falls | OH | — | ◇ UNVERIFIED |
| MIMar-bal INC. (0243112019) | Painesville | OH | — | ◇ UNVERIFIED |
| MPMar-bal Pultrusion, INC. | Willoughby | OH | — | ◇ UNVERIFIED |
| MCMarble Connection/cabinet Connection | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| MPMarble Palace | Stockton | CA | — | ◇ UNVERIFIED |
| MPMarch Performance INC | Naples | FL | — | ◇ UNVERIFIED |
| MAMarine Accessories Corporation (mac) | Maryville | TN | — | ◇ UNVERIFIED |
| MEMarine Electrical Products | Lebanon | MO | — | ◇ UNVERIFIED |
| MPMarion Process Solutions | Marion | IA | — | ◇ UNVERIFIED |
| MSMarion Steel Fabrication Incorporated | Marion | IN | — | ◇ UNVERIFIED |
| MIMaritime International INC | Broussard | LA | — | ◇ UNVERIFIED |
| MIMark I Molded Plastics of Tennessee | Henry | TN | — | ◇ UNVERIFIED |
| MRMark Richey Woodworking & Design INC | Newburyport | MA | — | ◇ UNVERIFIED |
| MVMark Vii Equipment Incorporated | Arvada | CO | — | ◇ UNVERIFIED |
| MCMarley Cooling Tower Company | Louisville | KY | — | ◇ UNVERIFIED |
| MIMarlock INC | Maynardville | TN | — | ◇ UNVERIFIED |
| MSMarshall Steel Services INC. | Arvada | CO | — | ◇ UNVERIFIED |
| MMMartin Marietta Composites INC Sparta Facility | Sparta | NC | — | ◇ UNVERIFIED |
| MSMartin Steel INC | Huntington | WV | — | ◇ UNVERIFIED |
| MIMarx Industries INC | Sawmills | NC | — | ◇ UNVERIFIED |
| MPMaryland Plastics | Federalsburg | MD | — | ◇ UNVERIFIED |
| MRMasco Retail Cabinet Group | Waverly | OH | — | ◇ UNVERIFIED |
| MPMastercraft Pattern and Model Works INC / Fiberglass Reinforced Plastic Mfg Faci | North Miami | OK | — | ◇ UNVERIFIED |
| MIMasterfab INC | Goshen | IN | — | ◇ UNVERIFIED |
| MFMaster Finishing and Restorat | Needham | MA | — | ◇ UNVERIFIED |
| MMMaster Molded Products | Elgin | IL | — | ◇ UNVERIFIED |
| MPMaster Printing INC | Carlstadt | NJ | — | ◇ UNVERIFIED |
| MTMatco Tools | Lakewood | NY | — | ◇ UNVERIFIED |
| MPMaterial Processing and Handling CO | Fostoria | OH | — | ◇ UNVERIFIED |
| MTMaterials Technology INC | Somerset | NJ | — | ◇ UNVERIFIED |
| MBMaterion Brush INC | Fremont | CA | — | ◇ UNVERIFIED |
| MMMathy Machine INC | Santee | CA | — | ◇ UNVERIFIED |
| MPMato Plastics INC. | Valencia | CA | — | ◇ UNVERIFIED |
 Matrix Machine and Repair INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| MCMauell Corporation-utility Room | Dillsburg | PA | — | ◇ UNVERIFIED |
| MPMauser Packaging Solutions | Charlotte | NC | — | ◇ UNVERIFIED |
| MMMaxcor Manufacturing INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| MCMaxim Crane Works LP | Nitro | WV | — | ◇ UNVERIFIED |
| MMMayfair Molded Products CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| MVMay-wilbert Vault-pt Huron | Port Huron | MI | — | ◇ UNVERIFIED |
| MWMazzella Welding & Fabrication INC | Wellsburg | WV | — | ◇ UNVERIFIED |
| MAMcabee Assembly Facility | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| MSMcb Steel, INC. | Bessemer | AL | — | ◇ UNVERIFIED |
| MBMccann Barrel | Milwaukee | WI | — | ◇ UNVERIFIED |
| MPMcclarin Plastics LLC | Hanover | PA | — | ◇ UNVERIFIED |
| MIMccullough Industries | Kenton | OH | — | ◇ UNVERIFIED |
| MIMcdermott INC | Gibson | LA | — | ◇ UNVERIFIED |
| MIMcdermott INC - Morgan City Fabrication Facility - Amelia Yard | Amelia | LA | — | ◇ UNVERIFIED |
| MMMcdonald Mfg INC | Artesia | CA | — | ◇ UNVERIFIED |
| MTMce Technologies INC | Seattle | WA | — | ◇ UNVERIFIED |
| MAMcgill Air Flow LLC | Bennington | VT | — | ◇ UNVERIFIED |
| MDMcgill Development Corporation | Westerville | OH | — | ◇ UNVERIFIED |
| MIMcgill INC | Marengo | IL | — | ◇ UNVERIFIED |
| MMMckinstry Metal Works INC. | Chicopee | MA | — | ◇ UNVERIFIED |
 Mclaughlin Body CO | East Moline | IL | — | ◇ UNVERIFIED |
| MSMcneely Steel & Supply | Leavenworth | KS | — | ◇ UNVERIFIED |
| MWMcshane Welding CO INC | Erie | PA | — | ◇ UNVERIFIED |
| MEMcstowe Engineering | East Bridgewater | MA | — | ◇ UNVERIFIED |
| MIMct Industries Inc, Government Manufacturing | Bernalillo | NM | — | ◇ UNVERIFIED |
| MSMd Stainless Services INC | Downey | CA | — | ◇ UNVERIFIED |
| MCMeadwestvaco Calmar INC. | Winfield | KS | — | ◇ UNVERIFIED |
 Medegen Medical Products, LLC | Northglenn | CO | — | ◇ UNVERIFIED |
| MBMedina Blanking INC. | Valley City | OH | — | ◇ UNVERIFIED |
| MCMedin CORP | Totowa | NJ | — | ◇ UNVERIFIED |
| MIMedline INC. | Mundelein | IL | — | ◇ UNVERIFIED |
| MCMelsur CORP | Westminster | VT | — | ◇ UNVERIFIED |
| MCMerck & Co, LLC | Boulder | CO | — | ◇ UNVERIFIED |
| MAMercury Aircraft Bath Plant | Bath | NY | — | ◇ UNVERIFIED |
| MAMercury Aircraft INC | Hammondsport | NY | — | ◇ UNVERIFIED |
| MPMercury Plastics, INC. | City of Industry | CA | — | ◇ UNVERIFIED |
| MAMeridian Automotive | Jackson | OH | — | ◇ UNVERIFIED |
| MAMeridian Automotive Systems | Shelbyville | IN | — | ◇ UNVERIFIED |
| MAMeridian Automotive Systems INC | Canandaigua | NY | — | ◇ UNVERIFIED |
| MHMeritor - Howell | Howell | MI | — | ◇ UNVERIFIED |
| MWMerritt Woodwork | Mentor | OH | — | ◇ UNVERIFIED |
| MMMesco Metal Buildings | Southlake | TX | — | ◇ UNVERIFIED |
| MFMessick Farm Equipment | Elizabethtown | PA | — | ◇ UNVERIFIED |
| MIMetaglo INC. | Mamaroneck | NY | — | ◇ UNVERIFIED |
| MBMetal Bellows Corporation | Moorpark | CA | — | ◇ UNVERIFIED |
| MBMetal Building Products, Inc., Dba Spirco Manufacturing | Memphis | TN | — | ◇ UNVERIFIED |
| MCMetal Components INC | Wyoming | MI | — | ◇ UNVERIFIED |
| MCMetal Craft Engineering | Fenwick | WV | — | ◇ UNVERIFIED |
| MCMetal Crafters | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| MMetalcrafters | Simi Valley | CA | — | ◇ UNVERIFIED |
| MOMetalcraft of Mayville | West Bend | WI | — | ◇ UNVERIFIED |
| MCMetal Cutting CORP | Cedar Grove | NJ | — | ◇ UNVERIFIED |
| MIMetal-fab INC | Champaign | IL | — | ◇ UNVERIFIED |
