| MCMclean County Concrete CO | Bloomington | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MLMemorialpics LLC | Peoria | IL | Nonmetallic Mineral Product Manufacturing327112 | — | ◇ UNVERIFIED |
| MCMetro Concrete LLC | Lebanon | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMetro Concrete Products INC | South Roxana | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMetro Materials INC | Shiloh | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MSMet South INC | Joppa | IL | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Channahon | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Lake Zurich | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Park City | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | St Charles | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Loves Park | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Crystal Lake | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO | Bannockburn | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO #24 | Lee | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Material CO - Elgin Yard 41 | Elgin | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMeyer Materials CO | Machesney Park | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MRMichels Road & Stone INC | Shiloh Valley Twp | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMid-illinois Concrete | Greenville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMid-illinois Concrete INC | Mattoon | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMid-illinois Concrete INC | Ramsey | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMid-illinois Concrete INC | Charleston | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMid-illinois Concrete INC | Altamont | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMid-illinois Concrete INC | Olney | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MSMidwest Stone, INC. | Plainfield | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| 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 |
| 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 | Joliet | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Dwight | 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 |
| ODO Daniel Trucking CO | Grayville | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | West Frankfort | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | Herrin | 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 |
