| RMRocky Mountain Prestress LLC (structural Plant) | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RMRocky Mountain Redi Mix Plt No3 | Rifle | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RCRocla Concrete Tie Incorporated | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| SISandco INC | Durango | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| STSchlumberger Technology Corporation | Grand Junction | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| S0See 041-0231-03 Pete Lien & Sons | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSiegrist Construction CO -del Camino Pit | Longmont | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSimon Contractors - Bennett Ready-mix | Bennett | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSimon Contractors Dba Ogallala Ready Mix | Ogallala | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix - Osage Portable Plant | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix - Summit View Ready Mix | Fort Collins | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SRSouthwest Readymix | Alamosa | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SWSpn Well Services - Fort Lupton Facility | Fort Lupton Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SRSterling Ready Mix Concrete Co.cn | Kit Carson | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SWStone Wholesale - Brownstone Quarry | Laporte | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| SRSuburban Reddi Mix CO | Adams Cnty | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SVSummit View | Fort Collins | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| THTezak Heavy Equipment CO | Canon City | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TITopperscot INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| TMTransit Mix Concrete | Pueblo West | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TMTransit Mix Concrete & Materials CO | Henderson | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TMTransit Mix Concrete - Monument Batch | Monument | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TMTransit Mix of Pueblo | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| URUnited Ready Mix | Platteville | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| URUnited Ready Mix - Platteville | Platteville | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| UMUS Mix CO. | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| VIValco INC | Rocky Ford | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| VIValco INC | Canon City | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| VIValcrete, INC. - Concrete Batch Plant | Swink Area | CO | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| VBValley Block Loveland Facility | Loveland | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| VCVarra Companies INC | Colorado | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| VCVarra Companies INC Ft Lupton Plant 2 | Fort Lupton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WCWells Concrete - Architectural Plant | Denver | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| WDWells Denver Precast | Brighton | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| WMWestern Mobile Denver INC | Golden | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WMWestern Mobile Northern Bayfield Pit | Walden 18.5 Mi. Se of | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WRWest Ranch Aggregate - Port Generator | Rocky Ford Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WRWhite River Sand & Gravel-meeker Pit | Meeker | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WRWray Readi Mix INC. | Wray | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ZDZak Dirt - Portable Batch Plant | Mead | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ASArizona Shower Door - Denver | Denver | CO | Nonmetallic Mineral Product Manufacturing327215 | 20-99 | ◐ LIKELY ACTIVE |
| BCBasalite - Colorado Springs | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◐ LIKELY ACTIVE |
| BFBasalite - Fort Lupton | Fort Lupton | CO | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| BRBrannan Ready Mix Central | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BRBrannan Ready Mix South | Englewood | CO | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| BCBURNCO - Corporate Office CO | Westminster | CO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BCBurnco - CO Springs CO | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BFBURNCO - Firestone | Firestone | CO | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| BFBURNCO - Fort Lupton CO | Fort Lupton | CO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BJBurnco - Jeffco CO | Golden | CO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |