| MEMississippi Ethanol LLC | Winona | — | ◇ UNVERIFIED |
| MIMississippi Investment Petroleum Company | Houston | — | ◇ UNVERIFIED |
| MPMississippi Phosphates CORP. | Pascagoula | — | ◇ UNVERIFIED |
| MBMound Bayou Refinery INC | Mound Bayou | — | ◇ UNVERIFIED |
| NSNeel Schaffer Inc, Jitney Jr Number 617 | Tchula | — | ◇ UNVERIFIED |
| NANufarm Americas, INC - Greenville | Greenville | — | ◇ UNVERIFIED |
| NSNupla - South | Meridian | — | ◇ UNVERIFIED |
| PSPharmedium Services LLC | Cleveland | — | ◇ UNVERIFIED |
| PEPursue Energy Corporation | Brandon | — | ◇ UNVERIFIED |
| RMRb Manufacturing LLC | Brandon | — | ◇ UNVERIFIED |
| RPRed Panther Chemical Company | Clarksdale | — | ◇ UNVERIFIED |
| REReichhold Environmental Response Trust | Gulfport | — | ◇ UNVERIFIED |
| RKR K Metals LLC | Tupelo | — | ◇ UNVERIFIED |
| SMSchaffner Manufacturing Company INC | Jackson | — | ◇ UNVERIFIED |
| SPScott Petroleum Greenville Terminal | Greenville | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Inc, Owner, and Specialty Minerals Mississippi Inc, Operator | Brookhaven | — | ◇ UNVERIFIED |
| SCSunbeam Corp, Sunbeam Advanced Manufacturing and Distribution Center | Hattiesburg | — | ◇ UNVERIFIED |
| SCSunbelt Chemicals INC | Gulfport | — | ◇ UNVERIFIED |
| SMSuperior Manufacturing Group | Moselle | — | ◇ UNVERIFIED |
| TSThe Scotts CO | Pearl | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Laboratories | Jackson | — | ◇ UNVERIFIED |
| UBUniversal Bioenergy of North America INC | Nettleton | — | ◇ UNVERIFIED |
| VRValspar Refinish | Picayune | — | ◇ UNVERIFIED |
| YEYoung E.f. Jr. Manufacturing CO. | Meridian | — | ◇ UNVERIFIED |
| ANAirgas Nitrous Oxide - Yazoo City | Yazoo City | 20–99 | ◐ LIKELY ACTIVE |
| AHAllegis Holdings LLC | Canton | — | ◐ LIKELY ACTIVE |
| AUAllied Universal Corporation - Ellisville MS | Ellisville | 1–19 | ◐ LIKELY ACTIVE |
| APAlpek Polyester Mississippi, Inc | Bay Saint Louis | 100–499 | ◐ LIKELY ACTIVE |
| ADAtlantic Dry Ice - Brandon Plant | Brnadon | 20–99 | ◐ LIKELY ACTIVE |
| AAAvenues Auction & Realty LLC | Meridian | — | ▲ REPORTED CLOSED |
Belzona Mississippi, INC. | Moss Point | — | ◐ LIKELY ACTIVE |
Bio-dek LLC | Pascagoula | — | ◐ LIKELY ACTIVE |
| BDBrookhaven Dry Ice Plant | Brookhaven | 20–99 | ◐ LIKELY ACTIVE |
| CMCedric M Hampton | Starkville | — | ◐ LIKELY ACTIVE |
| CCC&S Chemicals - Forest, MS | Forest | 1–19 | ◐ LIKELY ACTIVE |
| DADelta Absorbents of America INC | Hollandale | — | ◐ LIKELY ACTIVE |
| EMEcpc Mississippi LLC | Jackson | — | ◐ LIKELY ACTIVE |
| EAElite AP | Ripley | 20–99 | ◐ LIKELY ACTIVE |
| GIGmind Incorporated | Como | — | ▲ REPORTED CLOSED |
| HBHGS Bioscience Sardis | Sardis | 20–99 | ◐ LIKELY ACTIVE |
| MDMadison Dry Ice Plant | Madison | 1–19 | ◐ LIKELY ACTIVE |
| MSMckesson Specialty Distribution LLC | Olive Branch | — | ◐ LIKELY ACTIVE |
| MFMeridian Fire Foam LLC | Meridian | — | ◐ LIKELY ACTIVE |
| NGNufarm - Greenville Plant | Greenville | 20–99 | ◐ LIKELY ACTIVE |
| NANutrien Ag Solutions, INC. | Grenada | — | ◐ LIKELY ACTIVE |
| OBOlive Branch | Olive Branch | 500+ | ◐ LIKELY ACTIVE |
| PCPlatte Chemical LPI MS | Grennville | 20–99 | ◐ LIKELY ACTIVE |
| SBSABIC Bay St. Louis Facility | Bay Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| SASipcam Agro Solutions | Waynesboro | 100–499 | ◐ LIKELY ACTIVE |
| SSSterling Specialty Chemicals | Aberdeen | 20–99 | ◐ LIKELY ACTIVE |