| AAAll American Resourcse - North D-22 Pit | Delta | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ACAmes Construction Inc.cn | Aurora | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ARAndesite Rock CO | Longmont | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ARAndesite Rock Company | Henderson | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AGAnimas Glacier Gravel | Durango | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ARAult Ready Mix Lllp | Ault | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Denver | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BCBasalite Concrete Solutions LLC | Fort Lupton | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BBB&b Blending INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Brighton | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Ft Lupton | Fort Lupton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete Co-longmont | Longmont | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete CO Windsor | Windsor | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete - Firestein Pit | Greeley | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBestway Concrete - the Shores | Firestone | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BLBestway - Lippman 4800cc 200607115 | Arvada Area | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BOBison Oil Well Cementing-109 N 6th Ave | Greeley | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix Company | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BBurnco | Kiowa | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBurnco Colorado - East Greeley Plant | Kersey | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Ft. Lupton Plant | Fort Lupton Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBurnco Colorado LLC - Colorado Springs (plant 621) | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Portable Screen/engine | Henderson | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Portable Screen/engine | Buena Vista | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CCCarder Concrete Products Company | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCascade Const- Alliance Ready Mix | Delta Area | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| CCCastle Concrete CO | El Paso County | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCastle Concrete CO - Pikeview Quarry | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327000 | — | ◇ UNVERIFIED |
| CRCenter Redi Mix INC | Center | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CRCentral Ready Mix, LLC | Denver Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CAColorado Aggregate | San Acacio | CO | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CWConcrete Works of Colorado - Port Plant | Lafayette | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CWConcrete Works of CO - Port. Conc. Batch | Monte Vista Area | CO | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| CCCoorstek - Ceramics | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CGCoorstek - Grand Junction Operations | Grand Junction | CO | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CICoorstek, Inc.- South Table Mountain | Golden | CO | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| CCCotter Corp-cancelled 12/05/01 | Canon City | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CBCustom Building Products - Denc | Berkley | CO | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| DWDenver Water Department | Henderson | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DMDesigner Marble Dba Benray Designer Marb | Lakewood | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DCDfc Ceramics | Canon City | CO | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| DMDilleys Mobile Premix | Brush | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DRDorn Ready Mix | Fort Morgan | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ECE & C Precast Concrete, INC. | Littleton | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ECElam Clear Creek Batch Plant | Idaho Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ESEldorado Stone (prev. Stonecraft) | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| EMEverist Materials - Concrete Batc H Plnt | Kremmling | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FIFiberon INC | Fort Collins | CO | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| FPFirebaugh Precast, INC. | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| FPForterra Precast Concepts, INC. | Henderson | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
