| WOWinchester - Operations Oxford Ms | Oxford | — | ◐ LIKELY ACTIVE |
| ZCZeon Chemicals LP | Hattiesburg | — | ◐ LIKELY ACTIVE |
| AUAllied Universal Corporation | Ellisville | — | ◇ UNVERIFIED |
| GGGeorgia Gulf Chemicla and Vinyls, LLC | Prairie | — | ◇ UNVERIFIED |
| HIHelmitin INC. | Olive Branch | — | ◇ UNVERIFIED |
| JBJns Biofuel LLC | New Albany | — | ◇ UNVERIFIED |
| VCVicksburg Chemical Company | Vicksburg | — | ◇ UNVERIFIED |
Belzona Mississippi, INC | Moss Point | — | ◐ LIKELY ACTIVE |
| APAc Polymers INC | Byhalia | — | ◐ LIKELY ACTIVE |
| BIBastech INC | Natchez | — | ◐ LIKELY ACTIVE |
| CPChemical Products & Systems, Incorporated | Jackson | — | ◐ LIKELY ACTIVE |
| CNCustom Nonwoven INC | New Albany | 20–99 | ◐ LIKELY ACTIVE |
| ECEngelhard Corporation | Jackson | — | ◐ LIKELY ACTIVE |
| GLGcp Laboratories | Gulfport | — | ◐ LIKELY ACTIVE |
| KMKingsford Mnfg | Glen | 1–19 | ◐ LIKELY ACTIVE |
| LLLinde LLC | Brandon | — | ◐ LIKELY ACTIVE |
| MLMacrosource Llc, Greenville North | Greenville | — | ◐ LIKELY ACTIVE |
| SASipcam Argo Solutions, LLC | Shubuta | — | ◐ LIKELY ACTIVE |
| TCThe Chemours Company FC, LLC - Delisle | Pass Christian | 100–499 | ◐ LIKELY ACTIVE |
| TLTronox LLC | Hamilton | — | ◐ LIKELY ACTIVE |
| WCWestlake Compounds, LLC., Prairie | Prairie | 20–99 | ◐ LIKELY ACTIVE |
| APApollo Petroleum | Picayune | — | ◐ LIKELY ACTIVE |
| DODenbury Onshore Llc, Jackson Dome Facility | Brandon | — | ◐ LIKELY ACTIVE |
| FBFluent By Voyant Beauty | Olive Branch | — | ◐ LIKELY ACTIVE |
| MAM and M Milling Company | Brookhaven | — | ◐ LIKELY ACTIVE |
| MAMarietta American CORP | Olive Branch | — | ◐ LIKELY ACTIVE |
| MPMississippi Phosphates CORP | Pascagoula | — | ◐ LIKELY ACTIVE |
| SMSaunders Midwest | Meridian | — | ◐ LIKELY ACTIVE |
| SCSherwin-williams Company | Olive Branch | — | ◐ LIKELY ACTIVE |
| AUAirgas USA LLC Dba Airgas Dry Ice | Jackson | — | ◇ UNVERIFIED |
| ACAkzonobel Coatinging INC. | Clinton | — | ◇ UNVERIFIED |
| BCBakelite Chemicals LLC | Taylorsville | — | ◇ UNVERIFIED |
| BIBaymont INC | Golden | — | ◇ UNVERIFIED |
| BFBluefire Fulton Renewable Energy LLC | Fulton | — | ◇ UNVERIFIED |
| DEDelta Ethanol LLC | Greenwood | — | ◇ UNVERIFIED |
| EPEko Peroxide LLC | Columbus | — | ◇ UNVERIFIED |
| EEElite Elastomers INC | Ripley | — | ◇ UNVERIFIED |
| EEEntire Energy LLC | Mount Olive | — | ◇ UNVERIFIED |
| EAEthos Alternative Energy-mississippi, Ll | Meridian | — | ◇ UNVERIFIED |
| ETExide Technologies, Florence Oxide Plant | Florence | — | ◇ UNVERIFIED |
| FSFive Star Products INC | Ripley | — | ◇ UNVERIFIED |
| FPFoam Packaging INC | Vicksburg | — | ◇ UNVERIFIED |
| GTG2o Technologies LLC | Monticello | — | ◇ UNVERIFIED |
| GFGavilon Fertilizer Llc, Vicksburg Facility | Vicksburg | — | ◇ UNVERIFIED |
| GRGeorgia-pacific Resins, INC. | Louisville | — | ◇ UNVERIFIED |
| HIHercules INC | Hattiesburg | — | ◇ UNVERIFIED |
| HPHunt Process Corporation Southern | Ridgeland | — | ◇ UNVERIFIED |
| KIKior INC | Columbus | — | ◇ UNVERIFIED |
| MSMactor Site | Greenville | — | ◇ UNVERIFIED |
| MTMatheson Tri Gas INC | Madison | — | ◇ UNVERIFIED |