| MCMarietta Corporation | Olive Branch | MS | — | ◇ UNVERIFIED |
| MHMarietta Holding Corp., D.b.a. Central Avenue Properties | Cortland | NY | — | ◇ UNVERIFIED |
| MSMarine Spill Response Corporation | Richmond | CA | — | ◇ UNVERIFIED |
| MVMarine Vacuum Service, INC. | Seattle | WA | — | ◇ UNVERIFIED |
| MFMarisol Farm LLC | Pasadena | CA | — | ◇ UNVERIFIED |
| MAMark A. Moreno | San Francisco | CA | — | ◇ UNVERIFIED |
| MJMark James | Watsonville | CA | — | ◇ UNVERIFIED |
| MMMarkwest Michigan Pipeline CO LLC | Johannesburg | MI | — | ◇ UNVERIFIED |
| MUMarkwest Utica Emg, LLC | Cadiz | OH | — | ◇ UNVERIFIED |
| MCMarson Corporation | Chelsea | MA | — | ◇ UNVERIFIED |
| MRMartinez Refining Company LLC (previously Shell Oil Products Us, Martinez Ref.) | Martinez | CA | — | ◇ UNVERIFIED |
| MFMartin Fox | El Centro | CA | — | ◇ UNVERIFIED |
| MLMartin Lubricants | Kansas City | KS | — | ◇ UNVERIFIED |
| MLMartin Lumber 18 #1 & Swd | Union Hill | LA | — | ◇ UNVERIFIED |
| MOMartin Operating Partnership L.p. | Smackover | AR | — | ◇ UNVERIFIED |
| MPMartin Phoenix Grease Plant | Phoenix | AZ | — | ◇ UNVERIFIED |
| MOMarvel Oil CO | Port Chester | NY | — | ◇ UNVERIFIED |
| MHMarysville Hydrocarbons | Marysville | MI | — | ◇ UNVERIFIED |
| MCMastec Communications Group | Benicia | CA | — | ◇ UNVERIFIED |
| MBMaster Builder Solutions | Ashland | VA | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions Admixtures US LLC | Longwood | FL | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions Admixtures US LLC | Kent | WA | — | ◇ UNVERIFIED |
| MAMasterpice Artist Canvas | San Francisco | CA | — | ◇ UNVERIFIED |
| MWMaster Wash | Commerce City | CO | — | ◇ UNVERIFIED |
 Matrix Machine CORP | Chino | CA | — | ◇ UNVERIFIED |
| MOMatrix Oil Corporation - Rideout Heights | Whittier | CA | — | ◇ UNVERIFIED |
| MPMattiace Petrochemical Co., INC. | Glen Cove | NY | — | ◇ UNVERIFIED |
| MPMaui Petroleum, INC. | Kahului | HI | — | ◇ UNVERIFIED |
| MAMauri All Debris | Richmond | CA | — | ◇ UNVERIFIED |
| MLMauro Lopez | West Hollywood | CA | — | ◇ UNVERIFIED |
| MIMaverick Insulation, INC. | Diamond Springs | CA | — | ◇ UNVERIFIED |
| MMMax & Min Properties LLC | Garden Grove | CA | — | ◇ UNVERIFIED |
| MRMaxima Racing Oils | Santee | CA | — | ◇ UNVERIFIED |
| MPMaxum Petroleum | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| MEMaxwell Equipment Company INC. | Simi Valley | CA | — | ◇ UNVERIFIED |
| MNMbt Nevada LLC | Henderson | NV | — | ◇ UNVERIFIED |
| MRMcgregor Rd | Coahoma | TX | — | ◇ UNVERIFIED |
| MIMc Ionic Solutions Us, INC | Memphis | TN | — | ◇ UNVERIFIED |
| MRMckees Rocks Transfer Station | Mc Kees Rocks | PA | — | ◇ UNVERIFIED |
| MLMckenna Labs, INC. | Fullerton | CA | — | ◇ UNVERIFIED |
| M1Mckittrick 17z Gas Plant | Mckittrick | CA | — | ◇ UNVERIFIED |
| MAMcpherson Agricultural Products LLC | Mcpherson | KS | — | ◇ UNVERIFIED |
| MCMD Chemicals LLC | Mendon | MA | — | ◇ UNVERIFIED |
| MMdp | Richmond | VA | — | ◇ UNVERIFIED |
| MCMeadow Club | Fairfax | CA | — | ◇ UNVERIFIED |
| MBMe Bath Manufacturing, INC. | Springdale | AR | — | ◇ UNVERIFIED |
| MOMediprint Ophthalmics | San Diego | CA | — | ◇ UNVERIFIED |
| MGMedpack Group INC. | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| MSMedpak Solutions LLC | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| MMMeeco Manufacturing Company, Inc. | Seattle | WA | — | ◇ UNVERIFIED |
| MIMenard INC | Chicago | IL | — | ◇ UNVERIFIED |
| MBMept Bedford Park LLC | Bedford Park | IL | — | ◇ UNVERIFIED |
| MOMerchants Oil - Merchants Oil - | Denver | CO | — | ◇ UNVERIFIED |
 Merit Medical Systems, INC | San Jose | CA | — | ◇ UNVERIFIED |
| MOMerit Oil Fuel Processors | Portland | OR | — | ◇ UNVERIFIED |
| MOMesa Oil INC | Belen | NM | — | ◇ UNVERIFIED |
| MOMesa Oil INC | Golden | CO | — | ◇ UNVERIFIED |
| MAMesquite Air Tanker Base | Mesquite | NV | — | ◇ UNVERIFIED |
| MBMetairie Blending Facility | Metairie | LA | — | ◇ UNVERIFIED |
| MFMetal Finishing Research CORP | Chicago | IL | — | ◇ UNVERIFIED |
| MPMetals Processing, INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| MLMetalworking Lubricants CO | Indianapolis | IN | — | ◇ UNVERIFIED |
| MLMetalworking Lubricants CO | Pontiac | MI | — | ◇ UNVERIFIED |
| MLMetalworking Lubricants Company at US Steel Gary | Gary | IN | — | ◇ UNVERIFIED |
| MLMetalworking Lubricants Company US Steel Midwest | Portage | IN | — | ◇ UNVERIFIED |
| MCMetokote Corporation | Sanford | NC | — | ◇ UNVERIFIED |
| MPMetroplex Petroleum INC | Midlothian | TX | — | ◇ UNVERIFIED |
| MAMexichem America INC | Tennent | NJ | — | ◇ UNVERIFIED |
| MLMeyerban, LLC | Nogales | AZ | — | ◇ UNVERIFIED |
| MAM&g Automotive | Belmont | CA | — | ◇ UNVERIFIED |
| MLMH Lanz Capital, LLC | Zion | IL | — | ◇ UNVERIFIED |
| MMichael | Lomita | CA | — | ◇ UNVERIFIED |
| MGMichael Gabrielson | Live Oak | CA | — | ◇ UNVERIFIED |
| MMMichael Magnes | Los Angeles | CA | — | ◇ UNVERIFIED |
| MDMicrobial Discovery Group | Franklin | WI | — | ◇ UNVERIFIED |
| MAMid America Agriproducts-haxtun | Haxtun Area | CO | — | ◇ UNVERIFIED |
| MCMid Continent Coal & Coke | Milton | KY | — | ◇ UNVERIFIED |
| MCMid Continent Coal & Coke | East Chicago | IN | — | ◇ UNVERIFIED |
| MCMid-continent Coal & Coke | East Chicago | IN | — | ◇ UNVERIFIED |
| MCMid Continent Coal & Coke Company | East Chicago | IN | — | ◇ UNVERIFIED |
| MDMi Dept/transportation-g Howe Int'l Bridge | Detroit | MI | — | ◇ UNVERIFIED |
| MEMidland Estates LLC | Crockett | TX | — | ◇ UNVERIFIED |
| MFMidland Facility | Midland | TX | — | ◇ UNVERIFIED |
| MEMidnight Express Transportation INC | San Juan Bautista | CA | — | ◇ UNVERIFIED |
| MAMidwest Agra Bio Diesel | Mclean | IL | — | ◇ UNVERIFIED |
| MBMidwest Biofuels INC | Pekin | IL | — | ◇ UNVERIFIED |
| MSMiirant Station H | Dickerson | MD | — | ◇ UNVERIFIED |
| MJMike Jenkins | Ontario | CA | — | ◇ UNVERIFIED |
| MEMikeone Ek Maitland Summit, LLC | Orlando | FL | — | ◇ UNVERIFIED |
| MCMikuni Color USA INC. | West Sacramento | CA | — | ◇ UNVERIFIED |
| MCMiles City Seat Base | Miles City | MT | — | ◇ UNVERIFIED |
| MLM-i L L C Zavalla | Zavalla | TX | — | ◇ UNVERIFIED |
| MFMillennium Fuels Ii | Albany | KY | — | ◇ UNVERIFIED |
| MPMillennium Products Inc | Hesperia | CA | — | ◇ UNVERIFIED |
| MPMilne Point Unit | Prudhoe Bay | AK | — | ◇ UNVERIFIED |
| MIMinutia INC Bakar Labs | Berkeley | CA | — | ◇ UNVERIFIED |
| MPMirandy Products LLC | South Hempstead | NY | — | ◇ UNVERIFIED |
| MPMirandy Products LLC | Miami | FL | — | ◇ UNVERIFIED |
| MFMisbehaven Fireworks CORP. | Catskill | NY | — | ◇ UNVERIFIED |
| MKMission Kleensweep Prods INC | Los Angeles | CA | — | ◇ UNVERIFIED |
