| OLO.T.S. Logistics, LLC | Brownstown | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OOzinga | Joliet | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros | Forest View | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Milan | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Downers Grove | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Grant Park | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Watseka | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Brothers, INC. | Alsip | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOzinga Chicago Rmc INC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOzinga Concrete | Rockford | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc | Dekalb | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Blue Island | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Mokena | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC | Mchenry | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC | Cherry Valley | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete INC | Wilmington | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Kankakee | Kankakee | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PSPar Services INC - Concrete Division | Granite City | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPekin Concrete Plt | Pekin | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPintas Cultured Marble Incorporated | Alsip | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| PCPlote Construction INC | Algonquin | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPlote Construction INC | Roscoe | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPlote Construction INC | Huntley | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPlote Construction INC | Huntley | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPlote Construction INC | Des Plaines | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PIPmautomotive, INC. | Batavia | IL | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| PRPoggenpohl Ready Mix | Raymond | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoggenpohl Ready Mix | Moweaqua | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoggenpohl Ready-mix | Carlinville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoggenpohl Redi-mix | Pana | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoggenpohl Redi-mix | Virden | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoint Ready Mix LLC | Belvidere | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoint Ready Mix LLC | Spring Grove | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoint Ready Mix LLC | Volo | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPoint Ready Mix LLC | Belvidere | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PRPoint Ready Mix LLC | Monroe Center | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PIPpg Industries, INC. | Mount Zion | IL | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Concord | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Danville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Decatur | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Elgin | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PMPrairie Materials Sales INC | Hillside | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PMPrairie Material Yard 18 | Highland Park | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PAPres-on Abrasives | Addison | IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| PSPrestressed Slabs INC | East St Louis | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| QCQuad Cities Concrete Products, LLC | Milan | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| QCQuad CO Ready Mix | Marissa | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| QCQuad County Ready Mix | Troy | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| QCQuad County Ready Mix | Mount Vernon | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| QCQuad County Ready Mix | Breese | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
