| MEManville Energy Park | Manvel | TX | — | ◇ UNVERIFIED |
| MCMarzahl Chemical CO | Kearny | NJ | — | ◇ UNVERIFIED |
| MOMays Ochoa Corporation | Catano | PR | — | ◇ UNVERIFIED |
| M3Mc (us) 3 LLC | Dunbar | WV | — | ◇ UNVERIFIED |
| MAMedford Air Tanker Base | Medford | OR | — | ◇ UNVERIFIED |
| MOMeglobal Oyster Creek | Freeport | TX | — | ◇ UNVERIFIED |
| MCMetal Chem INC | Greenville | SC | — | ◇ UNVERIFIED |
 Mfg Chemical, INC. - Callahan Plant | Dalton | GA | — | ◇ UNVERIFIED |
| Mfg Chemical Incorporated | Dalton | GA | — | ◇ UNVERIFIED |
| MPMgc Pure Chemicals America, INC | Killeen | TX | — | ◇ UNVERIFIED |
| MRMidland Resources INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| MIMilacron INC Consumable Prods Div | Cincinnati | OH | — | ◇ UNVERIFIED |
| MPMoc Products Company INC | Pacoima | CA | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC | Norco | LA | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals Inc.- Baytown Tx | Baytown | TX | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC - Formaldehyde Plant | Geismar | LA | — | ◇ UNVERIFIED |
| MOMonolith Olive Creek 1 | Hallam | NE | — | ◇ UNVERIFIED |
| MCMorflex Chemical CO INC | Greensboro | NC | — | ◇ UNVERIFIED |
| MIMorgan INC | Enterprise | AL | — | ◇ UNVERIFIED |
| MHMount Holly West Plant | Mount Holly | NC | — | ◇ UNVERIFIED |
| MFMpc - Fairborn | Fairborn | OH | — | ◇ UNVERIFIED |
| MBMsu Bioeconomy Institute | Holland | MI | — | ◇ UNVERIFIED |
| NCNalco Chemical Company | Bedford Park | IL | — | ◇ UNVERIFIED |
| NCNalco CO - Evansville Plant 108 | Evansville | WY | — | ◇ UNVERIFIED |
| NCNalco CO LLC | Carson | CA | — | ◇ UNVERIFIED |
| NCNalco CO Plant 106 | Sugar Land | TX | — | ◇ UNVERIFIED |
| NENalco Exxon Energy Chemical Scott Blend Plant | Scott | LA | — | ◇ UNVERIFIED |
| NTNanophase Technologies CORP | Romeoville | IL | — | ◇ UNVERIFIED |
| NCNapco Chemical Co., INC. | Spring | TX | — | ◇ UNVERIFIED |
| NBNexpera Burnside Plant | Darrow | LA | — | ◇ UNVERIFIED |
| NDNext Diesel | Adrian | MI | — | ◇ UNVERIFIED |
| NCNissan Chemical America Pasadena Plant | Pasadena | TX | — | ◇ UNVERIFIED |
| NINorac INC | Helena | AR | — | ◇ UNVERIFIED |
| NANoranda Alumina LLC | Gramercy | LA | — | ◇ UNVERIFIED |
| NINorth Industrial Chemicals INC | York | PA | — | ◇ UNVERIFIED |
| NFNouryon Functional Chemicals LLC Battleground | La Porte | TX | — | ◇ UNVERIFIED |
| NRNova Recovery Oz Holdings, LLC | Sumter | SC | — | ◇ UNVERIFIED |
| NLNovastar LP | Midland | TX | — | ◇ UNVERIFIED |
| NNNovo Nordisk Biochem North America, INC. | Franklinton | NC | — | ◇ UNVERIFIED |
| NANutrien Aurora Facility | Aurora | NC | — | ◇ UNVERIFIED |
| NBNutrition & Biosciences USA 1 LLC - Plaquemine Methocel | Plaquemine | LA | — | ◇ UNVERIFIED |
| NNNyacol Nano Technologies | Ashland | MA | — | ◇ UNVERIFIED |
| OPOak Point Plant | Belle Chasse | LA | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation | Convent | LA | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation Ashtabula Plant | Ashtabula | OH | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation - Geismar Facility | Geismar | LA | — | ◇ UNVERIFIED |
| OCOccidental Chemical Corporation Oxychem | New Johnsonville | TN | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP Sauget Plant | Sauget | IL | — | ◇ UNVERIFIED |
| OCOccidental Chemical CORP - Taft Plant | Hahnville | LA | — | ◇ UNVERIFIED |
| OBOld Bridge Chemiacls INC | Old Bridge | NJ | — | ◇ UNVERIFIED |
