| MIMetalpro, INC | Springfield | VA | — | ◇ UNVERIFIED |
| MCMetokote Corporation | Sanford | NC | — | ◇ UNVERIFIED |
| MPMiami Products & Chemical CO. | Dayton | OH | — | ◇ UNVERIFIED |
| MIMicel INC | Anaheim | CA | — | ◇ UNVERIFIED |
| MMicrochem | Newton | MA | — | ◇ UNVERIFIED |
| MDM-i Drilling Fluids Erl Plant | Houston | TX | — | ◇ UNVERIFIED |
| MDM-i Drilling Fluids Garden City | Garden City | LA | — | ◇ UNVERIFIED |
| MHM-i Holdings LLC | Houston | TX | — | ◇ UNVERIFIED |
| MEMiller Environmental CO INC | Shelbyville | IN | — | ◇ UNVERIFIED |
| MRMineral Right, INC. Environmental Manager | Phillipsburg | KS | — | ◇ UNVERIFIED |
| MPMirandy Products LLC | South Hempstead | NY | — | ◇ UNVERIFIED |
| MEMissouri Electrochem Incorporated | Saint Louis | MO | — | ◇ UNVERIFIED |
| MBMitchell Bradford International CORP | Milford | CT | — | ◇ UNVERIFIED |
| MIMitco INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| MWMitco Water Laboratories, INC | Auburndale | FL | — | ◇ UNVERIFIED |
| MKMitsubishi Kaguku Imaging CORP | Elkton | MD | — | ◇ UNVERIFIED |
| MMMixing & Mass Transfer Tech | State College | PA | — | ◇ UNVERIFIED |
| MRMolecular Rearrangement | Newton | NJ | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC. | Batesville | AR | — | ◇ UNVERIFIED |
| MRMonetta Railyard Transloading Facility | Monetta | SC | — | ◇ UNVERIFIED |
| MPMonomer Polymer & Dajac Labs | Feasterville | PA | — | ◇ UNVERIFIED |
| MSMonomer Sciences INC | New Market | AL | — | ◇ UNVERIFIED |
| MCMonson Chemical Distribution | Leominster | MA | — | ◇ UNVERIFIED |
| MCMortell CO | Riverside | CA | — | ◇ UNVERIFIED |
| MIMorton International | Grantsville | UT | — | ◇ UNVERIFIED |
| MIMorton International | Grand Saline | TX | — | ◇ UNVERIFIED |
| MSMpower Specialty Chemicals | Brookshire | TX | — | ◇ UNVERIFIED |
| MRM & R Auto Body Shop/pottstown | Pottstown | PA | — | ◇ UNVERIFIED |
| MIMti Insulated Products, INC. | Fort Wayne | IN | — | ◇ UNVERIFIED |
| MGMulti-chem Gc LLC - New Iberia Chemical Distribution Facility | New Iberia | LA | — | ◇ UNVERIFIED |
| MGMulti-chem Group | New Iberia | LA | — | ◇ UNVERIFIED |
| MGMulti-chem Group LLC - Geismar Facility | Geismar | LA | — | ◇ UNVERIFIED |
| MGMulti-chem Group, LLC Rock Springs Facility | Rock Springs | WY | — | ◇ UNVERIFIED |
| MFMultisorb Filtration Group, French Road Facility | Buffalo | NY | — | ◇ UNVERIFIED |
| MTMultisorb Technologies | Cheektowaga | NY | — | ◇ UNVERIFIED |
| NCNalco Company | Conway | AR | — | ◇ UNVERIFIED |
| NCNalco Company - Dickinson | Dickinson | ND | — | ◇ UNVERIFIED |
 Nalco Company, Energy Services Division | Evansville | WY | — | ◇ UNVERIFIED |
| NCNalco CO Tulsa Plant 102 | Tulsa | OK | — | ◇ UNVERIFIED |
| NDNalco Diversified Technologies INC | Chagrin Falls | OH | — | ◇ UNVERIFIED |
| NENalco Energy Services LP | Gillette | WY | — | ◇ UNVERIFIED |
| NSNanochem Solutions INC | Peru | IL | — | ◇ UNVERIFIED |
| NNanosys | Milpitas | CA | — | ◇ UNVERIFIED |
| NMNassau Metals CORP | Staten Island | NY | — | ◇ UNVERIFIED |
 National Foam/west Chester | West Chester | PA | — | ◇ UNVERIFIED |
| NSNatl Sales & Supply Inc/bensalem | Bensalem | PA | — | ◇ UNVERIFIED |
| NINcoc INC (national Chemical & Oil CORP ) | Oak Park | MI | — | ◇ UNVERIFIED |
| NDNew Deal Deicing - Denver Plant | Denver | CO | — | ◇ UNVERIFIED |
| NENew England Parts Cleaning,llc | Plainville | CT | — | ◇ UNVERIFIED |
