 Ozinga On-site INC | Mokena | 100–499 | ● ACTIVE |
| IOIl Ozinga Plants-mokena | Mokena | 20–99 | ◐ LIKELY ACTIVE |
| OIOzinga Illinois Rmc INC | Joliet | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Plainfield | — | ◇ UNVERIFIED |
| VPVcna Prairie INC - Yard 1130 | Shorewood | — | ◇ UNVERIFIED |
| WRWelsch Ready Mix INC | Joliet | — | ◇ UNVERIFIED |
| WRWelsch Ready Mix INC | Frankfort | — | ◐ LIKELY ACTIVE |
| AMAztec Material Service CORP | Lockport | — | ◇ UNVERIFIED |
| DPDukane Precast INC | Plainfield | — | ◇ UNVERIFIED |
| GEGayton Enterprises LLC | New Lenox | — | ◇ UNVERIFIED |
| LALotton Art Glass | Crete | — | ◇ UNVERIFIED |
| MIMinnick Illinois LLC | Joliet | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Channahon | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Joliet | — | ◇ UNVERIFIED |
| NBNorthfield Block INC | Romeoville | — | ◇ UNVERIFIED |
| OOldcastle | Lockport | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Joliet | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Monee | — | ◇ UNVERIFIED |
| OROzinga Ready-mix-channahon | Channahon | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Monee | Monee | — | ◇ UNVERIFIED |
| PMPrairie Material Sales | Romeoville | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Bolingbrook | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois Illinois INC Yard 1134 | Romeoville | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC | Monee | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC | Lemont | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC | Channahon | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC P011 | Elwood | — | ◇ UNVERIFIED |
| VPVcna Prairie Illinois INC P120 | Crest Hill | — | ◇ UNVERIFIED |
| VPVcna Prairie LLC - 1t28/port of Will County | Elwood | — | ◇ UNVERIFIED |
| WRWelsch Ready Mix | Bolingbrook | — | ◇ UNVERIFIED |
| ASArizona Shower Door - Chicago | University Park | 20–99 | ◐ LIKELY ACTIVE |
| ISIllinois South Suburban General | Mokena | 1–19 | ◐ LIKELY ACTIVE |
| JPJoliet Plant - 225 | Joliet | 20–99 | ◐ LIKELY ACTIVE |
| KIKnauer Industries LTD | Shorewood | — | ◐ LIKELY ACTIVE |
| RCRomeoville - CPL | Lockport | 20–99 | ◐ LIKELY ACTIVE |
 US Minerals INC | Tinley Park | — | ◐ LIKELY ACTIVE |
| WBWILLE BROTHERS COMPANY- Monee Ready Mix Plant | Monee | 20–99 | ◐ LIKELY ACTIVE |
| ADAlpine Demolition Services | Crest Hill | — | ◇ UNVERIFIED |
| ARAmerican Redi Mix CORP | Bolingbrook | — | ◇ UNVERIFIED |
| AAAnchor Abrasives Company | Tinley Park | — | ◇ UNVERIFIED |
| AAAWMCO Acquisition, LLC | Orland Park | — | ◇ UNVERIFIED |
| BGBolingbrook Glass & Mirror, INC. | Bolingbrook | — | ◇ UNVERIFIED |
| BQBolingbrook Quality Mix | Bolingbrook | — | ◇ UNVERIFIED |
| HKHarry Kuhn INC | Plainfield | — | ◇ UNVERIFIED |
| IMIllinois Mining CORP | Romeoville | — | ◇ UNVERIFIED |
| JAJoliet Arsenal Portable Plant | Elwood | — | ◇ UNVERIFIED |
| KMKnauer Mod Wilbert Burial Vaul | Joliet | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Channahon | — | ◇ UNVERIFIED |
| MSMidwest Stone, INC. | Plainfield | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Channahon | — | ◇ UNVERIFIED |
