| MFMartins Forestry Products Llc/myerstown | Myerstown | PA | — | ◇ UNVERIFIED |
| MMMartinson Mica Wood Products, INC. | Miami Lakes | FL | — | ◇ UNVERIFIED |
| MWMarvin Windows INC Dba Marvin Windows and Doors | Warroad | MN | — | ◇ UNVERIFIED |
| MFMarysville Forest Products | Marysville | CA | — | ◇ UNVERIFIED |
| MCMasonite Corporation | Shelbyville | KY | — | ◇ UNVERIFIED |
| MCMasonite Corporation | Largo | FL | — | ◇ UNVERIFIED |
| MCMasonite Corporation - Dorfab Stockton | Stockton | CA | — | ◇ UNVERIFIED |
| MCMasterbrand Cabinets INC | Auburn | AL | — | ◇ UNVERIFIED |
| MCMasterbrand Cabinets Plant #2 & #3a | Jasper | IN | — | ◇ UNVERIFIED |
| MHMaster Halco | Kansas City | KS | — | ◇ UNVERIFIED |
| MCMaterial Control INC. Dba Cotterman Company | Bakersfield | CA | — | ◇ UNVERIFIED |
| MRMaterial Resources & Recycling, Inc. | Blue Island | IL | — | ◇ UNVERIFIED |
| MDMaterials Development Corpora | Andover | MA | — | ◇ UNVERIFIED |
| MIMat INC | Floodwood | MN | — | ◇ UNVERIFIED |
| MIMat INC - Floodwood | Floodwood | MN | — | ◇ UNVERIFIED |
| MHMatthew Hayes | San Francisco | CA | — | ◇ UNVERIFIED |
| MLMatthew & Laura Rodrigo | Cotati | CA | — | ◇ UNVERIFIED |
| MGMaxwell Group LLC | Walsenburg | CO | — | ◇ UNVERIFIED |
| MGMccash Glass LLC | Naples | FL | — | ◇ UNVERIFIED |
| MLMccomb Lumber Company | Canon City | CO | — | ◇ UNVERIFIED |
| MCMcCurnin Creations LLC | North Salt Lake | UT | — | ◇ UNVERIFIED |
| MCMcdermott Cue Mfg LLC | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| MPMcdowell Panel & Components | Marion | NC | — | ◇ UNVERIFIED |
| MCMcfarland Cascade | Rison | AR | — | ◇ UNVERIFIED |
| MEMcgill Environmental Systems - Waverly | Waverly | VA | — | ◇ UNVERIFIED |
 Mcgrory Glass | West Deptford Twp | NJ | — | ◇ UNVERIFIED |
| MSMcrae & Sons INC | Bay City | OR | — | ◇ UNVERIFIED |
| MWMd Wood Llc/oklahoma City Mfg Fa | Oklahoma City | OK | — | ◇ UNVERIFIED |
| MTMeasure Twice, Cut Once Woodworks, LLC | Sanford | FL | — | ◇ UNVERIFIED |
| MCMediterranean Corporation | Galax | VA | — | ◇ UNVERIFIED |
| MIMegawood, Incorporated | Troy | NC | — | ◇ UNVERIFIED |
| MLMeier LLC | Denver | CO | — | ◇ UNVERIFIED |
| MIMenard, INC. | Eau Claire | WI | — | ◇ UNVERIFIED |
| MDMenards Distribution Center | Eau Claire | WI | — | ◇ UNVERIFIED |
| MFMerchants Fixture INC Dba Merchants Fixture | Ashland | VA | — | ◇ UNVERIFIED |
| MWMerrick Woodworking INC | Aurora | CO | — | ◇ UNVERIFIED |
| MBMerritt Brothers Lumber | Athol | ID | — | ◇ UNVERIFIED |
| MWMerritt West LLC | Lodi | CA | — | ◇ UNVERIFIED |
| MLMerutz, LLC | Lockport | IL | — | ◇ UNVERIFIED |
| MBMesa Bioenergy Supply LLC | Auburn | NY | — | ◇ UNVERIFIED |
| MIMesser Industries - Closed | Greer | SC | — | ◇ UNVERIFIED |
| MMMetro Mailing Service INC Dba Metro Print and Mail Solutions | Sacramento | CA | — | ◇ UNVERIFIED |
| MCMf Classic Interior - Nopal | Santa Barbara | CA | — | ◇ UNVERIFIED |
| MWMf Wiggins LLC | Wiggins | MS | — | ◇ UNVERIFIED |
| MCMiami CNC Router, LLC | Doral | FL | — | ◇ UNVERIFIED |
| MCMichael Chavez Millworks & Cabinetry Inc. | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| MSMichael S Merica & Caryn E Merica | Gold Beach | OR | — | ◇ UNVERIFIED |
| MCMichigan Components, LLC | Romulus | MI | — | ◇ UNVERIFIED |
| MPMichigan Prestain | Wyoming | MI | — | ◇ UNVERIFIED |
| MWMichigan Wood Fuels LLC | Holland | MI | — | ◇ UNVERIFIED |
