 Engis Corporation | Wheeling | 100–499 | ● ACTIVE |
 Remco Technology, INC | Skokie | — | ● ACTIVE |
 Uk Abrasives INC | Northbrook | — | ● ACTIVE |
 American Wilbert Vault CORP | Hillside | — | ● ACTIVE |
 Amrize Cement INC. | Chicago | — | ● ACTIVE |
 Angelic Monuments CO | Westchester | — | ● ACTIVE |
 H L Clausing INC | Skokie | — | ● ACTIVE |
| SSSamuel, Son & CO. (usa) INC. | Elk Grove Village | — | ● ACTIVE |
 United States Gypsum Company | Chicago | — | ● ACTIVE |
| EGEngineered Glass Products LLC | Chicago | — | ◐ LIKELY ACTIVE |
| GMGlobal Material Technologies INC | Chicago | — | ◐ LIKELY ACTIVE |
| HCHarvey Cement Products | Harvey | 1–19 | ◐ LIKELY ACTIVE |
| HMHolland Manufacturing CORP | Dolton | 20–99 | ◐ LIKELY ACTIVE |
| AGArdagh Glass INC. (dolton) | Dolton | — | ◐ LIKELY ACTIVE |
| HIHolcim (us) INC | Chicago | — | ◇ UNVERIFIED |
| OCOzinga Chicago Rmc INC | Chicago | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Lemont | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Alsip | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Company | Chicago | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Chinatown | Chicago | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete Desplaines Yard | Des Plaines | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Evanston Yard | Evanston | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Northbrook | — | ◇ UNVERIFIED |
| PRPremier Refractories & Chemicals Incorporated | Chicago Heights | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC Yard 1001 | Bridgeview | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC Yard 1005 | Chicago | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC Yard 1033 | Chicago | — | ◇ UNVERIFIED |
| VPVcna Prairie Inc-yard 1032 | Chicago | — | ◇ UNVERIFIED |
| VPVcna Prairie - Yard 1008 | Des Plaines | — | ◇ UNVERIFIED |
| VPVcna Prairie Yard 1015 | Hazel Crest | — | ◇ UNVERIFIED |
| American Wilbert Vault Des Plaines | Des Plaines | 20–99 | ◐ LIKELY ACTIVE |
| GCGerali Custom Design, INC. | Elgin | 20–99 | ◐ LIKELY ACTIVE |
| LALombard Architectural Precast Products Company | Alsip | 20–99 | ◐ LIKELY ACTIVE |
| WBWILLE BROTHERS COMPANY- Oak Forest Ready Mix Plant | Oak Forest | 20–99 | ◐ LIKELY ACTIVE |
| WBWILLE BROTHERS COMPANY- Sauk Village Ready Mix Plant | Sauk Village | 1–19 | ◐ LIKELY ACTIVE |
 Gerresheimer Glass INC | Chicago Heights | — | ◐ LIKELY ACTIVE |
| PGPhoenix Global | Riverdale | — | ◐ LIKELY ACTIVE |
| TVTru Vue INC. | Mccook | — | ◐ LIKELY ACTIVE |
| ALA & L Construction | Melrose Park | — | ◇ UNVERIFIED |
| American Wilbert Vault CORP | Chicago | — | ◇ UNVERIFIED |
| AIAwmco INC | Chicago | — | ◇ UNVERIFIED |
| AAztec | Chicago | — | ◇ UNVERIFIED |
| AMAztec Material Service CORP | Lansing | — | ◇ UNVERIFIED |
| BGBevel Granite CO INC | Merrionette Park | — | ◇ UNVERIFIED |
| CFChicago Finished Metals INC | Bridgeview | — | ◇ UNVERIFIED |
| CSConcrete Specialties CO | Franklin Park | — | ◇ UNVERIFIED |
| CSConcrete Specialties CO Hazel Crest | Markham | — | ◇ UNVERIFIED |
| CMCowhey Materials and Fuel | Chicago | — | ◇ UNVERIFIED |
| DCDicicco Concrete Products CO | Chicago Heights | — | ◇ UNVERIFIED |
| EGEagle Grinding Wheel CORP | Chicago | — | ◇ UNVERIFIED |
