| MSMillennium Stone, INC. | Johnsburg | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MCMiller Contracting Services INC | Dahlgren | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MWMillstone Weber | Mascoutah | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMission Concrete Products | Shawneetown | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMo Concrete | Greenville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MAModern Abrasive CORP. | Spring Grove | IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| MCModern Countertops | Springfield | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MRMoeller Ready Mix INC | Meredosia | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MRMonmouth Ready Mix CORP | Monmouth | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NBNarvick Bros Lumber CO INC | Sandwich | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Joliet | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Channahon | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Dwight | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Joliet | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NSNatural Stone INC. | Lake Forest | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| NANdk America INC | Belvidere | IL | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| NENew England Cement CORP INC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NFNew Future Mine | Galatia | IL | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| NONicholas of Jacksonville LLC | Jacksonville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NFNikkin Flux Corporation | Edwardsville | IL | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| NLNirvana9 LLC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Mundelein | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ODO Daniel Trucking CO | Grayville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | Herrin | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | West Frankfort | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | Marion | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | Benton | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Romeoville | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OSOltman & Sons INC | Henry | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OLO.T.S. Logistics, LLC | Brownstown | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OBOzinga Bros | Forest View | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Grant Park | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Milan | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Watseka | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Downers Grove | 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 | Mokena | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Blue Island | 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 | Huntley | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPlote Construction INC | Des Plaines | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
