| BCBestway Concrete CO Titan Plant | Littleton | — | ◐ LIKELY ACTIVE |
| BCBurnco Colorado LLC - Pueblo | Pueblo | 1–19 | ◐ LIKELY ACTIVE |
| CCCemex Construction Materials South LLC | Lyons | — | ◐ LIKELY ACTIVE |
| CRCenter Redi Mix INC | Center | — | ◐ LIKELY ACTIVE |
| FPFoley Products Company - Littleton | Littleton | 20–99 | ◐ LIKELY ACTIVE |
| GRGcc Rio Grande INC | Pueblo | — | ◐ LIKELY ACTIVE |
| GSGeneral Shale - Denver Brick Plant #60 | Denver | — | ◐ LIKELY ACTIVE |
| GJGrand Junction Concrete Pipe / Ready Mix | Grand Junction | — | ◐ LIKELY ACTIVE |
| HIHolcim (us) INC - Portland Plant | Florence | — | ◐ LIKELY ACTIVE |
| HWHolcim Wcr - Cs-main | Colorado Springs | — | ◐ LIKELY ACTIVE |
| MMMartin Marietta - 2401 Picadilly Rd | Aurora | — | ◐ LIKELY ACTIVE |
| MMMartin Marietta Castle Rock Ready Mix | Castle Rock | — | ◐ LIKELY ACTIVE |
| MMMartin Marietta Chambers Ready Mix | Aurora | — | ◐ LIKELY ACTIVE |
| MCMathias Concrete INC | Monte Vista | — | ◐ LIKELY ACTIVE |
| OPOldcastle Precast INC | Littleton | — | ◐ LIKELY ACTIVE |
| PDPavestone - Denver, CO Plant | Henderson | 20–99 | ◐ LIKELY ACTIVE |
| PSPg&f Superabrasives Royersford LLC | Montrose | 20–99 | ◐ LIKELY ACTIVE |
| PCPlum Creek Precast Company | Littleton | 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 |
| RRRitchey's Redi Mix INC | Wray | — | ◐ LIKELY ACTIVE |
| RRRock & Rail - Highway 34 Facility | Johnstown | — | ◐ LIKELY ACTIVE |
| RMRocky Mountain Bottle CO - 10619 W 50th | Wheat Ridge | — | ◐ LIKELY ACTIVE |
| TITops in Stone, INC. | Colorado Springs | 1–19 | ◐ LIKELY ACTIVE |
| WSWestern Slope Aggregate | Carbondale | — | ◐ LIKELY ACTIVE |
| ZDZak Dirt - Portable Batch Plant | Mead | — | ◐ LIKELY ACTIVE |
| AIAggregate Industries Wcr INC - Brighton Ready Mix | Brighton | — | ◐ LIKELY ACTIVE |
| AEArcosa Esc Boulder | Boulder | — | ◐ LIKELY ACTIVE |
| BBBest Block - South Plant | Pueblo | — | ◐ LIKELY ACTIVE |
| BCBestway Concrete CO - Jeffco | Golden | — | ◐ LIKELY ACTIVE |
| BBBoral Best Block - North Plant | Littleton | — | ◐ LIKELY ACTIVE |
| BRBrannan Ready Mix - South Ready Mix | Englewood | — | ◐ LIKELY ACTIVE |
| BCBurnco Colorado - Bernhardt Batch Plant | Milliken | — | ◐ LIKELY ACTIVE |
| EGEagle Gypsum Mine | Gypsum | — | ◐ LIKELY ACTIVE |
| ECElam Construction INC - X-630 | Grand Junction | — | ◐ LIKELY ACTIVE |
| HWHolcim Wcr - Cs-north | Colorado Springs | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Bannock | Denver | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Broomfield Plant | Broomfield | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Commerce City Readymix | Commerce City | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Sand Cree | Aurora | — | ◐ LIKELY ACTIVE |
| LRLafarge Rock Creek Ready Mix | Lafayette | — | ◐ LIKELY ACTIVE |
| LWLafarge West INC Valmont Plant | Boulder | — | ◐ LIKELY ACTIVE |
| MMMartin Marietta Arvada Ready Mix | Arvada | — | ◐ LIKELY ACTIVE |
| MMMartin Marietta Mtrls - Quivas | Denver | — | ◐ LIKELY ACTIVE |
| MMMartin Marietta Titan Ready Mix | Littleton | — | ◐ LIKELY ACTIVE |
| MLMonierlifetile L.l.c. | Henderson | — | ◐ LIKELY ACTIVE |
| PCPavestone Company | Fountain | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete CO Plant 14 | Lafayette | — | ◐ LIKELY ACTIVE |
| RMRocky Mountain Ready Mix Concrete, Incorporated | Brighton | — | ◐ LIKELY ACTIVE |