| BCBestway Concrete CO - Denver | Denver | 20–99 | ● ACTIVE |
 Granite World of Colorado, LLC | Denver | — | ● ACTIVE |
 Pretred, INC. | Aurora | — | ● ACTIVE |
| BCBurnco Colorado - Henderson Plant | Henderson | 20–99 | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company | Brighton | 20–99 | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Plant 12 | Aurora | 20–99 | ◐ LIKELY ACTIVE |
| PDPavestone - Denver, CO Plant | Henderson | 20–99 | ◐ LIKELY ACTIVE |
| QDQuikrete - Denver, CO Plant | Denver | 20–99 | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company - Franklin Street Plant | Denver | 20–99 | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Plant 11 | Arvada | 1–19 | ◐ LIKELY ACTIVE |
| MLMonierlifetile L.l.c. | Henderson | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Commerce City Readymix | Commerce City | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Sand Cree | Aurora | — | ◇ UNVERIFIED |
| MMMartin Marietta - 2401 Picadilly Rd | Aurora | — | ◇ UNVERIFIED |
| MMMartin Marietta Chambers Ready Mix | Aurora | — | ◇ UNVERIFIED |
| TBThe Business Strategy LLC | Westminster | — | ◐ LIKELY ACTIVE |
| ECEncon Colorado, LLC | Denver | 20–99 | ◐ LIKELY ACTIVE |
| FSFlashfill Services LLC - Denver Yard | Commerce City | — | ◐ LIKELY ACTIVE |
| QBQuikrete-concrete Bagging Plant | Denver | — | ◐ LIKELY ACTIVE |
| WRWestlake Royal Roofing - Denver, Co | Henderson | 1–19 | ◐ LIKELY ACTIVE |
| AIAggregate Industries | Brighton | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Denver | — | ◇ UNVERIFIED |
| ACAmes Construction Inc.cn | Aurora | — | ◇ UNVERIFIED |
| ARAndesite Rock Company | Henderson | — | ◇ UNVERIFIED |
| BBB&b Blending INC | Denver | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix Company | Denver | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Portable Screen/engine | Henderson | — | ◇ UNVERIFIED |
| CCCarder Concrete Products Company | Brighton | — | ◇ UNVERIFIED |
| CRCentral Ready Mix, LLC | Denver Area | — | ◇ UNVERIFIED |
| CBCustom Building Products - Denc | Berkley | — | ◇ UNVERIFIED |
| DWDenver Water Department | Henderson | — | ◇ UNVERIFIED |
| FPForterra Precast Concepts, INC. | Henderson | — | ◇ UNVERIFIED |
| HIHagen Industries | Commerce City | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Denver Plant | Denver | — | ◇ UNVERIFIED |
| JBJohn Balistreri | Denver | — | ◇ UNVERIFIED |
| LWLafarge West, INC. - Howe Pit | Commerce City | — | ◇ UNVERIFIED |
| MMMetro Mix LLC | Denver | — | ◇ UNVERIFIED |
| OPOmega Products International, INC. | Commerce City | — | ◇ UNVERIFIED |
| OBOwens Brothers Concrete CO | Arvada | — | ◇ UNVERIFIED |
| PCPrecast Concepts, LLC | Henderson | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO -franklin Plnt 2 | Denver Area | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit | Denver | — | ◇ UNVERIFIED |
| RIRm Industrials - Rm Rail Park Recycle Op | Aurora | — | ◇ UNVERIFIED |
| RIRockustics INC | Aurora | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestress LLC (structural Plant) | Denver | — | ◇ UNVERIFIED |
| SCSimon Contractors - Bennett Ready-mix | Bennett | — | ◇ UNVERIFIED |
| SRSuburban Reddi Mix CO | Adams Cnty | — | ◇ UNVERIFIED |
| SRSuburban Reddi-mix CO. | Aurora | — | ◇ UNVERIFIED |
| TMTransit Mix Concrete & Materials CO | Henderson | — | ◇ UNVERIFIED |
| WCWells Concrete - Architectural Plant | Denver | — | ◇ UNVERIFIED |
