| MMMerchants Metals INC | Whittier | CA | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| MAMerkin Auto Spring CO INC | Wilmington | DE | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MIMerkle-korff Industries- Plant 3 | Des Plaines | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMerryman Aggregates | Harvard | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MEMerryman Excavation INC | Woodstock | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMMetal Management Midwest INC | Bedford Park | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MTMetrolink Transit | Rock Island | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMetropolis Airport | Metropolis | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMMeyer Materials CO | Crystal Lake | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMichael Anthony Jewelers Incorporated | Mount Vernon | NY | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MCMichigan Critial Care Consultants, INC. | Dexter | MI | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MAMicrotron Abrasives, INC. | Pineville | NC | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MTMicrovention Terumo | Tustin | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Champaign | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Mahomet | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MRMiddleboro Recycling | Middleborough | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMidway Airport Amc Buildings | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MCMidwest Cement Products | Woosung | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MEMidwest Electronic | Ellsworth | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MSMidwest Sanitary Service INC | Wood River | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MSMidwest Sign CO | Kansas City | KS | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MSMidwest Soil Remediation | Lockport | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MTMidwest Trophy Manufacturing CO | Princeton | IL | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| MFMike Fuhrman, Village President | Waynesville | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MRMilam Recycling & Disposal | East St Louis | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MCMiller Casket Co/jermyn | Jermyn | PA | Miscellaneous Manufacturing339995 | — | ◇ UNVERIFIED |
| MDMiller Dial Corporation | El Monte | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MOMilroy Optical | Tampa | FL | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| MBMilton Bradley Company | East Longmeadow, Town of | MA | Miscellaneous Manufacturing339932 | — | ◇ UNVERIFIED |
| MMMinee Monesse Golf Course | Momence | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Mini Systems Incorporated | Plainville | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MVMinton Ventures, LLC | Lenoir | NC | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Miracle Recreation Equipment CO. | Advance | MO | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| MMMissouri Meerschaum Company | Washington | MO | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MCMitchell Container Services INC | Saraland | AL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MLMixonsite LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MGMizuno Golf CORP. | Norcross | GA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| MAMizzonis Auto Body INC. | Lodi | NJ | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMjt Aged Finishes | Carthage | MO | Miscellaneous Manufacturing339992 | — | ◇ UNVERIFIED |
| MLM & L Oil CO INC | Cisne | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MOMobil Oil CORP | Newark | DE | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MOMobil Oil CORP Ss# 17-qgg | Newark | DE | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MHMontec Hydraulics/carmichaels | Carmichaels | PA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MPMoore Painting CO | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MTMoorestown Twp Water Pollution Control Plant | Moorestown | NJ | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MCMorongo Casino Cogeneration Facility | Cabazon | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MCMorris Community Landfill | Morris | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MGMorrison Grease Recycling INC | Morrison | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMMorristown Memorial Hospital | Morristown | NJ | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| MSMorton Supplies INC | Morton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
