| MIMarlock INC | Maynardville | TN | — | ◇ UNVERIFIED |
| MCMarox CORP | Holyoke | MA | — | ◇ UNVERIFIED |
 Marsam Metal Finishing | New Britain | CT | — | ◇ UNVERIFIED |
| MFMars Fishcare INC | Chalfont | PA | — | ◇ UNVERIFIED |
| MGMarsha Grubb | Shelbyville | IL | — | ◇ UNVERIFIED |
| MSMarshalls Sandblasting and Painting | Willis | VA | — | ◇ UNVERIFIED |
| MSMarshall Steel Services INC. | Arvada | CO | — | ◇ UNVERIFIED |
| MCMartin Cabinet INC | Bristol | CT | — | ◇ UNVERIFIED |
| MCMartin Container Service INC | Wilmington | CA | — | ◇ UNVERIFIED |
| MCMartin Conveyor Division | Mansfield | TX | — | ◇ UNVERIFIED |
| MMartinizing | Palatine | IL | — | ◇ UNVERIFIED |
| MLMartin Lumber 18 #1 & Swd | Union Hill | LA | — | ◇ UNVERIFIED |
| MMMartin Marietta Composites INC Sparta Facility | Sparta | NC | — | ◇ UNVERIFIED |
| MSMartin Specialty Coatings LLC | Shreveport | LA | — | ◇ UNVERIFIED |
| MSMartin Steel INC | Huntington | WV | — | ◇ UNVERIFIED |
| MSMarubenl Specialty Chemicals | Vandalia | IL | — | ◇ UNVERIFIED |
| MUMarukome USA | Irvine | CA | — | ◇ UNVERIFIED |
| MKMary Kay Abts | Pekin | IL | — | ◇ UNVERIFIED |
| MPMaryland Plastics | Federalsburg | MD | — | ◇ UNVERIFIED |
| MBMasco Builder Cabinet Group | Ocala | FL | — | ◇ UNVERIFIED |
| MBMasco Builder Cabinet Group Cedar Hill | Cedar Hill | TX | — | ◇ UNVERIFIED |
| MCMasco Cabinetry LLC Atkins Plant 12 | Atkins | VA | — | ◇ UNVERIFIED |
| MCMasco Cabinetry Middlefield LLC Plant 2 | Middlefield | OH | — | ◇ UNVERIFIED |
| MRMasco Retail Cabinet Group | Waverly | OH | — | ◇ UNVERIFIED |
| MCMaselter Cabinets INC | Rockville | MN | — | ◇ UNVERIFIED |
| MCMason Candlelight | Middlesex | NJ | — | ◇ UNVERIFIED |
| MMMason Mfg INC | Decatur | IL | — | ◇ UNVERIFIED |
| MEMassac Environmental Tech INC | Centralia | IL | — | ◇ UNVERIFIED |
| MCMassasoit Community College | Canton | MA | — | ◇ UNVERIFIED |
| MHMassdot Highway Division | Boston | MA | — | ◇ UNVERIFIED |
| MPMassee Products LTD | Niles | MI | — | ◇ UNVERIFIED |
| MEMaster-bilt Engineered Structures | Sparks | NV | — | ◇ UNVERIFIED |
| MCMasterbrand Cabinets INC | Martinsville | VA | — | ◇ UNVERIFIED |
| MCMasterbrand Cabinets INC | Talladega | AL | — | ◇ UNVERIFIED |
| MCMasterbrand Cabinets INC - Richmond | Richmond | IN | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions US at Palmer Logistics | Grand Prairie | TX | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions US LLC | Allentown | PA | — | ◇ UNVERIFIED |
| MCMastercraft Cabinets Incorporated | Mesa | AZ | — | ◇ UNVERIFIED |
| MPMastercraft Pattern and Model Works INC / Fiberglass Reinforced Plastic Mfg Faci | North Miami | OK | — | ◇ UNVERIFIED |
| MIMasterfab INC | Goshen | IN | — | ◇ UNVERIFIED |
| MIMaster-halco INC | Scranton | PA | — | ◇ UNVERIFIED |
| MIMaster-halco INC | Tampa | FL | — | ◇ UNVERIFIED |
| MHMaster Halco/scranton Plt | Scranton | PA | — | ◇ UNVERIFIED |
| MMMaster Molded Products | Elgin | IL | — | ◇ UNVERIFIED |
| MCMasters Corporation | Lowell | MA | — | ◇ UNVERIFIED |
| MWMaster Wall INC. | Lithonia | GA | — | ◇ UNVERIFIED |
| MWMaster Wash | Commerce City | CO | — | ◇ UNVERIFIED |
| MMMatchless Metal Polish CO | Chicago | IL | — | ◇ UNVERIFIED |
| MTMatco Tools | Lakewood | NY | — | ◇ UNVERIFIED |
| MPMaterial Processing and Handling CO | Fostoria | OH | — | ◇ UNVERIFIED |
| MPMaterial Processing INC | Riverview | MI | — | ◇ UNVERIFIED |
| MTMaterials Technology INC | Somerset | NJ | — | ◇ UNVERIFIED |
| MBMaterion Brush INC | Fremont | CA | — | ◇ UNVERIFIED |
| MEMathis Excavating | Du Quoin | IL | — | ◇ UNVERIFIED |
| MMMathy Machine INC | Santee | CA | — | ◇ UNVERIFIED |
| MIMatlab Incorporated Ramseur Facility | Ramseur | NC | — | ◇ UNVERIFIED |
| MIMatlab, INC. - Plants 1-4, 5, 7, 8 and 11 | Asheboro | NC | — | ◇ UNVERIFIED |
| MPMato Plastics INC. | Valencia | CA | — | ◇ UNVERIFIED |
 Matrix Machine and Repair INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| MWMatrix Wire INC. | Auburn | AL | — | ◇ UNVERIFIED |
| MMMatson Mfg CO INC | Long Island City | NY | — | ◇ UNVERIFIED |
 Matthews International Corporation | Kingwood | WV | — | ◇ UNVERIFIED |
| MLMatt Leigh | Pontiac | IL | — | ◇ UNVERIFIED |
| MCMauell Corporation-utility Room | Dillsburg | PA | — | ◇ UNVERIFIED |
| MPMauser Packaging Solutions | Charlotte | NC | — | ◇ UNVERIFIED |
| MPMaverick Powder Coat & Sandblast | Anaheim | CA | — | ◇ UNVERIFIED |
| MMMaxcor Manufacturing INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| MWMaxiom Wheels, Akron Operation (1677010157) | Akron | OH | — | ◇ UNVERIFIED |
| MPMax Pax LLC | Elkhorn | WI | — | ◇ UNVERIFIED |
| MIMaxxum INC | Rush | MN | — | ◇ UNVERIFIED |
| MMMayfair Molded Products CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| MEMayville Engineering Company | Wytheville | VA | — | ◇ UNVERIFIED |
| MVMay-wilbert Vault-pt Huron | Port Huron | MI | — | ◇ UNVERIFIED |
| MWMazzella Welding & Fabrication INC | Wellsburg | WV | — | ◇ UNVERIFIED |
| MBM & B Metal Products | South Hill | VA | — | ◇ UNVERIFIED |
| MAMcabee Assembly Facility | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| MSMcb Steel, INC. | Bessemer | AL | — | ◇ UNVERIFIED |
| MBMccann Barrel | Milwaukee | WI | — | ◇ UNVERIFIED |
| MPMcclarin Plastics LLC | Hanover | PA | — | ◇ UNVERIFIED |
| MCMcconnell Cabinets INC | El Monte | CA | — | ◇ UNVERIFIED |
| MMMccormick & Mccormick Investments, LLC | Little Rock | AR | — | ◇ UNVERIFIED |
| MIMccullough Industries | Kenton | OH | — | ◇ UNVERIFIED |
| MIMcdermott INC | Gibson | LA | — | ◇ UNVERIFIED |
| MIMcdermott INC - Morgan City Fabrication Facility - Amelia Yard | Amelia | LA | — | ◇ UNVERIFIED |
| MTMce Technologies INC | Seattle | WA | — | ◇ UNVERIFIED |
| MMMcghan Medical Corporation | Santa Barbara | CA | — | ◇ UNVERIFIED |
| MAMcgill Air Flow LLC | Bennington | VT | — | ◇ UNVERIFIED |
| MDMcgill Development Corporation | Westerville | OH | — | ◇ UNVERIFIED |
| MIMcgill INC | Marengo | IL | — | ◇ UNVERIFIED |
| MPMchenry Public Works Garage | Mchenry | IL | — | ◇ UNVERIFIED |
| MIMc Ionic Solutions Us, INC | Memphis | TN | — | ◇ UNVERIFIED |
| MCMcjunkin CORP | Princeton | WV | — | ◇ UNVERIFIED |
| MRMckees Rocks Transfer Station | Mc Kees Rocks | PA | — | ◇ UNVERIFIED |
| MMMckinstry Metal Works INC. | Chicopee | MA | — | ◇ UNVERIFIED |
 Mclaughlin Body CO | East Moline | IL | — | ◇ UNVERIFIED |
| MPMcmaster Plating | Longview | TX | — | ◇ UNVERIFIED |
| MMMcmillan Mechanical & Machine Co., INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| MEMcneal Enterprises | San Jose | CA | — | ◇ UNVERIFIED |
| MSMcneely Steel & Supply | Leavenworth | KS | — | ◇ UNVERIFIED |
| MEMcstowe Engineering | East Bridgewater | MA | — | ◇ UNVERIFIED |
