| CRCountryside Realty LLC Concrete Supply LLC | Alorton | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Charleston | — | ◇ UNVERIFIED |
| CMCounty Materials CORP | Mount Vernon | — | ◇ UNVERIFIED |
| CCCrawford County Concrete a Div of Senco Construction INC | Robinson | — | ◇ UNVERIFIED |
| CMCreative Mirror Designs, INC. | Addison | — | ◇ UNVERIFIED |
| CPCrop Production Services 454 | Oakland | — | ◇ UNVERIFIED |
| CVCR Vernier, LLC | Belleville | — | ◇ UNVERIFIED |
| CRCurry Ready Mix | Gillespie | — | ◇ UNVERIFIED |
| CRCurry Ready Mix | Virden | — | ◇ UNVERIFIED |
| CRCurry Ready Mix & Builders Supply | Carlinville | — | ◇ UNVERIFIED |
| CMCustom Marble Designs of Naperville, Inc. | Lincolnwood | — | ◇ UNVERIFIED |
| DCDba Cornick Concrete Products | Pekin | — | ◇ UNVERIFIED |
| DCDecatur Concrete Recycling CO | Decatur | — | ◇ UNVERIFIED |
| DCDecatur Const Services INC Dba Capitol Concrete | Decatur | — | ◇ UNVERIFIED |
| EBE & B Paving INC | Effner | — | ◇ UNVERIFIED |
| ECEdwards County Concrete LLC | Albion | — | ◇ UNVERIFIED |
| EREdwards Ready Mix | Kewanee | — | ◇ UNVERIFIED |
| EREdwards Ready Mix | Cambridge | — | ◇ UNVERIFIED |
| ECElmhurst Chicago Stone CO | Bartlett | — | ◇ UNVERIFIED |
| EAEngineered Abrasives | Alsip | — | ◇ UNVERIFIED |
| ESEnvironmental Stoneworks INC | Bloomington | — | ◇ UNVERIFIED |
| ESEt Simonds Materials CO | Grand Chain | — | ◇ UNVERIFIED |
| EMEuro Marble & Granite Installations, INC. | Schiller Park | — | ◇ UNVERIFIED |
| EMEuro Marble Supply, Ltd, Dba Euro Marble & Granite, INC. | Schiller Park | — | ◇ UNVERIFIED |
| EUEuroptec USA LLC | Chicago | — | ◇ UNVERIFIED |
| FRFairfield Ready Mix | Fairfield | — | ◇ UNVERIFIED |
| FMFairmount Minerals, LLC | Cutler | — | ◇ UNVERIFIED |
 Fair-rite Products CORP | Flat Rock | — | ◇ UNVERIFIED |
| FWFarmington Wilbert Vault | Farmington | — | ◇ UNVERIFIED |
| FRFlora Ready Mix INC | Flora | — | ◇ UNVERIFIED |
| FRFlynn Ready Mix Concrete CO | Elizabeth | — | ◇ UNVERIFIED |
| FRFnh Ready Mix - Forreston | Forreston | — | ◇ UNVERIFIED |
| FRFnh Ready Mix - Freeport | Freeport | — | ◇ UNVERIFIED |
| FRFnh Ready Mix - Lanark | Lanark | — | ◇ UNVERIFIED |
| FRForrest Redi-mix INC | Forrest | — | ◇ UNVERIFIED |
| FPForterra Pipe & Precast, LLC | South Beloit | — | ◇ UNVERIFIED |
| FWFred Weber INC | Morton | — | ◇ UNVERIFIED |
| FSFreedom Supply Company LLC / Kbi Holdings LLC | Chicago Heights | — | ◇ UNVERIFIED |
| FGFuyao Glass Illinois CO | Decatur | — | ◇ UNVERIFIED |
| FGFuyao Glass Illinois, INC. | Mount Zion | — | ◇ UNVERIFIED |
| GBGalesburg Builders Supply #2 | Galesburg | — | ◇ UNVERIFIED |
| GBGalesburg Builders Supply CO | Galesburg | — | ◇ UNVERIFIED |
| GEGayton Enterprises | Saint Charles | — | ◇ UNVERIFIED |
| GGGeneva Glass Works, INC. | Geneva | — | ◇ UNVERIFIED |
| GFGeorge Ferber & Sons | Fairmount | — | ◇ UNVERIFIED |
| GRGibson Redi - Mix INC | Gibson City | — | ◇ UNVERIFIED |
| GMGlenn Mccann CO INC | Ransom | — | ◇ UNVERIFIED |
| GBGold Bond - Wak Plant | Waukegan | — | ◇ UNVERIFIED |
| GCGoreville Concrete INC | Goreville | — | ◇ UNVERIFIED |
| GCGoreville Concrete Products INC | Vienna | — | ◇ UNVERIFIED |
