| MMMarine Material Handling CORP | Lemont | IL | — | ◇ UNVERIFIED |
| MIMarjan INC | Waterbury | CT | — | ◇ UNVERIFIED |
| MPMarlette Plating | Buffalo | NY | — | ◇ UNVERIFIED |
| MMMarmic Metal Treating | Saint Charles | MO | — | ◇ UNVERIFIED |
| MDMarquis Dental Mfg CO INC | Aurora | CO | — | ◇ UNVERIFIED |
 Marsam Metal Finishing | New Britain | CT | — | ◇ UNVERIFIED |
| MGMarsha Grubb | Shelbyville | IL | — | ◇ UNVERIFIED |
| MPMarsh Plating CO | Buffalo | NY | — | ◇ UNVERIFIED |
| MMartinizing | Palatine | IL | — | ◇ UNVERIFIED |
| MMMartin Metal Specialties | Philadelphia | PA | — | ◇ UNVERIFIED |
| MKMary Kay Abts | Pekin | IL | — | ◇ UNVERIFIED |
| MPMasbro Polishing Company | Pawtucket | RI | — | ◇ 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 |
| MCMasse Circuit CO | Methuen | MA | — | ◇ UNVERIFIED |
| MBMaster Blasters | Beaverdam | OH | — | ◇ UNVERIFIED |
| MMMastercraft Metal Finishing INC | Seattle | WA | — | ◇ UNVERIFIED |
| MPMaster Plating | San Diego | CA | — | ◇ UNVERIFIED |
| MEMathis Excavating | Du Quoin | IL | — | ◇ UNVERIFIED |
| MPMatthews Plating INC | Jackson | MI | — | ◇ UNVERIFIED |
| MLMatt Leigh | Pontiac | IL | — | ◇ UNVERIFIED |
| MLMauna Loa Macadamia Nut | Hilo | HI | — | ◇ UNVERIFIED |
| MPMchenry Public Works Garage | Mchenry | IL | — | ◇ UNVERIFIED |
| MIMeadowvale INC | Sandwich | IL | — | ◇ UNVERIFIED |
| MPMedford Plating INC | Medford | OR | — | ◇ UNVERIFIED |
| MIMedicote, INC. | Bristol | RI | — | ◇ UNVERIFIED |
| MPMedina Plating CORP Plant 2 | Medina | OH | — | ◇ UNVERIFIED |
| MTMedin Technologies INC | Passaic | NJ | — | ◇ UNVERIFIED |
| MTMedline Teleflex Medical | Arlington Heights | IL | — | ◇ UNVERIFIED |
| MFMedora Fs, INC. | Medora | IL | — | ◇ UNVERIFIED |
| MLMedranos Landscape INC | Rockford | IL | — | ◇ UNVERIFIED |
| MTMeioco Terminal | Ashkum | IL | — | ◇ UNVERIFIED |
| MBMel Bernie & CO INC | Burbank | CA | — | ◇ UNVERIFIED |
| MMMeminger Metal Finishing INC | Aledo | IL | — | ◇ UNVERIFIED |
| MMMerit Metal Finishing Company, INC. | Bridgeport | CT | — | ◇ UNVERIFIED |
| MIMerkle-korff Industries- Plant 3 | Des Plaines | IL | — | ◇ UNVERIFIED |
| MAMerryman Aggregates | Harvard | IL | — | ◇ UNVERIFIED |
| MAMerryman Aggregates LLC | Woodstock | IL | — | ◇ UNVERIFIED |
| MEMerryman Excavation INC | Woodstock | IL | — | ◇ UNVERIFIED |
| MTMetalcraft Technologies INC. | Cedar City | UT | — | ◇ UNVERIFIED |
| MFMetal Finishing CO | Passaic | NJ | — | ◇ UNVERIFIED |
| MFMetal Finishing Incorporated | Marysville | WA | — | ◇ UNVERIFIED |
 Metal Industries, INC. | Marion | NC | — | ◇ UNVERIFIED |
| MMMetal Management Midwest INC | Bedford Park | IL | — | ◇ UNVERIFIED |
| MRMetal Recovery Sys INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| MTMetal Touch Plating and Bumper Exchange | San Antonio | TX | — | ◇ UNVERIFIED |
| MIMet-cycle INC | Middlesex | NJ | — | ◇ UNVERIFIED |
| MTMetrolink Transit | Rock Island | IL | — | ◇ UNVERIFIED |
| MPMetro Plating and Polishing Group INC. | Kensington | MD | — | ◇ UNVERIFIED |
| MPMetro Plating INC | Mesa | AZ | — | ◇ UNVERIFIED |
| MAMetropolis Airport | Metropolis | IL | — | ◇ UNVERIFIED |
| MPMetropolitan Pier & Exposition Authority | Chicago | IL | — | ◇ UNVERIFIED |
| MMMeyer Materials CO | Crystal Lake | IL | — | ◇ UNVERIFIED |
| MCMichigan Chrome & Chemical Company | Detroit | MI | — | ◇ UNVERIFIED |
| MIMicrofabrica INC | Van Nuys | CA | — | ◇ UNVERIFIED |
| MCMicrofin CORP | Providence | RI | — | ◇ UNVERIFIED |
| MOMicromatic Operations INC | Berne | IN | — | ◇ UNVERIFIED |
| MPMicro Platers Sales ( Dba Hajjar Plating Service) | Wayne | MI | — | ◇ UNVERIFIED |
| MMicrosemi | Scottsdale | AZ | — | ◇ UNVERIFIED |
| MAMicrotron Abrasives, INC. | Pineville | NC | — | ◇ UNVERIFIED |
| MAMid America Plating | Denver | CO | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Champaign | IL | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Mahomet | IL | — | ◇ UNVERIFIED |
| MRMiddleboro Recycling | Middleborough | MA | — | ◇ UNVERIFIED |
| MDMi Dept/natural Resources and Environment | Paw Paw | MI | — | ◇ UNVERIFIED |
| MSMid South Plating | Wedowee | AL | — | ◇ UNVERIFIED |
| MVMid Valley Anodizing | Burbank | CA | — | ◇ UNVERIFIED |
| MAMidway Airport Amc Buildings | Chicago | IL | — | ◇ UNVERIFIED |
| MCMidwest Cement Products | Woosung | IL | — | ◇ UNVERIFIED |
| MEMidwest Electronic | Ellsworth | IL | — | ◇ UNVERIFIED |
| MPMidwest Plating CO INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| MRMidwest Rem Enterprises INC | Chicago | IL | — | ◇ UNVERIFIED |
| MSMidwest Sanitary Service INC | Wood River | IL | — | ◇ UNVERIFIED |
| MSMidwest Soil Remediation | Lockport | IL | — | ◇ UNVERIFIED |
| MFMike Fuhrman, Village President | Waynesville | IL | — | ◇ UNVERIFIED |
| MAMike's Anodizing CO | Chicago | IL | — | ◇ UNVERIFIED |
| MRMilam Recycling & Disposal | East Saint Louis | IL | — | ◇ UNVERIFIED |
| MPMillenium Plating Company | Lowell | MA | — | ◇ UNVERIFIED |
| MPMiller Plating & Metal Finishing LLC | Evansville | IN | — | ◇ UNVERIFIED |
| MCMills Chrome Plating & Polishing | Sophia | WV | — | ◇ UNVERIFIED |
| MOMilroy Optical | Tampa | FL | — | ◇ UNVERIFIED |
| MMMinee Monesse Golf Course | Momence | IL | — | ◇ UNVERIFIED |
 Mini Systems Incorporated | Plainville | MA | — | ◇ UNVERIFIED |
| MMMinnesota Metal Finishing INC - Plant 1 | Minneapolis | MN | — | ◇ UNVERIFIED |
| MMMinnesota Metal Finishing Pla | Maple Grove | MN | — | ◇ UNVERIFIED |
| MVMinton Ventures, LLC | Lenoir | NC | — | ◇ UNVERIFIED |
| MIMirror Industries | Houston | TX | — | ◇ UNVERIFIED |
| MMMissouri Meerschaum Company | Washington | MO | — | ◇ UNVERIFIED |
| MMMissouri Mpp CORP | Kansas City | KS | — | ◇ UNVERIFIED |
| MLMixonsite LLC | Chicago | IL | — | ◇ UNVERIFIED |
| MAMizzonis Auto Body INC. | Lodi | NJ | — | ◇ UNVERIFIED |
| MLM & L Oil CO INC | Cisne | IL | — | ◇ UNVERIFIED |
| MMM & M/mars Div of Mars INC | Albany | GA | — | ◇ UNVERIFIED |
| MMM & M Metals INC | Cincinnati | OH | — | ◇ UNVERIFIED |
| MMM & M Polishing & Plating INC | La Follette | TN | — | ◇ UNVERIFIED |
| MAModern Aluminum Anod | N Adams | MA | — | ◇ UNVERIFIED |
| MHModern Hard Chrome of Illinois INC | Hennepin | IL | — | ◇ UNVERIFIED |
