| MVMount Vernon Jumpin Jimmys | Mount Vernon, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Mumford Micro Machine Works, LLC | Bluford, IL | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
| PPPfl Petroleum Services | Mount Vernon, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| QCQuad County Ready Mix | Mount Vernon, IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SLScott Lane | Bonnie, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SBShamrock Bit Svc | Ina, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SISouthern Illinois Materials | Mount Vernon, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| S7Speedway # 7423 | Ina, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| TJTylers Jefferson Motors INC | Mount Vernon, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| USUnited Science Industries | Dix, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WFWaltonville Fabrication & Overhaul | Waltonville, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
