| CCCastle Concrete CO Queens Canyon Quarry | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| CRCastle Rock Const - Q150 Plant, Port Cbp | Centennial | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials - Florence | Florence | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials - Lyons | Lyons Area | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| CLCfi, LLC (commercial Fabrication & Installation) | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCity Concrete (deleted 4/1977) | Englewood | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CSClassic Surfaces Gj, LLC | Grand Junction | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CSClassic Surfaces, INC. | Grand Junction | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCColar Compounds INC | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| CFColorado's Flooring & Granite, INC | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CGColumbine Granite, INC. | Littleton | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCommunity Clay, LLC | Denver | CO | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CECoorstek, Electronic Products Group | Golden | CO | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CHCopeland Holdings, LLC | Watkins | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| CFCornerstone Fabrication Corp. | Arvada | CO | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CNCosentino North America | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCountertop Concepts CO, LLC | Littleton | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCowan Concrete Products INC Batch Plt | Greeley | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCroell - Croell Portable #2 | Sundance | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CVC&s Ventures, INC. | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CECustom Edge Marble & Granite LLC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CGCustom Granite Interiors, LLC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CECutting Edge Granite | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DCDakolios Const Portable | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DMDavalos Marble | New Castle | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DADavid and McKenzie Valance | Granby | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DADenver Architechural Precast INC | Henderson | CO | Nonmetallic Mineral Product Manufacturing327000 | — | ◇ UNVERIFIED |
| DCDenver Countertops, LLC | Englewood | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DMDenver Marble Concepts | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DRDenver Ready Mix INC | Aurora | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DSDiamond Surface INC | Burlington | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DCDick Casey Concrete CO | Carbondale | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| DCDick Casey Concrete CO | Carbondale | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DWDon Ward INC | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| DRDorn Ready Mix | Fort Morgan Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| EGEagle Granite Unlimited | Minturn | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| EPEarthstone Products, LLC | Fort Collins | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
 Energy Technologies Group (was 3d Pierin | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| EMEnvironmental Materials LLC | Superior | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| EMEnvironmental Materials LLC | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| EMEnvironmental Materials LLC | Centennial | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| EMEuropean Marble Co., INC. | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| EGExtreme Granite, INC. | Centennial | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| FCFasick Concrete, INC. | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| FCFasick Concrete, INC. | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| FRFlanagan Ready Mix Division | Lafayette | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FRFlanagan Ready Mix LTD | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FRFlanagan Ready Mix LTD Batch Plt | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FCFlatiron Concrete Ll | Loveland | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FCFlatiron Const -port Concrete Batch Plnt | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
