 Stone Building Products, LLC | Greeley | — | ● ACTIVE |
| RRRock & Rail - Highway 34 Facility | Windsor Area | — | ◐ LIKELY ACTIVE |
| BCBurnco Colorado - Bernhardt Batch Plant | Milliken | — | ◇ UNVERIFIED |
| OGOwens-brockway Glass - Windsor #28 | Windsor | — | ◐ LIKELY ACTIVE |
| OIOwens-Illinois, Inc | Windsor | 100–499 | ◐ LIKELY ACTIVE |
| RMRocky Mountain Ready Mix Concrete, Incorporated | Brighton | — | ◐ LIKELY ACTIVE |
| ASAsphalt Specialties Co., INC. Plant #3 | Firestone Area | — | ◐ LIKELY ACTIVE |
| AIAggregate Industries | Windsor | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Brighton | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC - Brighton Ready Mix | Brighton | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC Firestone Ready Mix Plant | Longmont | — | ◇ UNVERIFIED |
| AIAggregate Industries-wcr INC -ww Farms P | Greeley | — | ◇ UNVERIFIED |
| ARAndesite Rock CO | Longmont | — | ◇ UNVERIFIED |
| ARAult Ready Mix Lllp | Ault | — | ◇ UNVERIFIED |
| BCBasalite Concrete Solutions LLC | Fort Lupton | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Brighton | Brighton | — | ◇ UNVERIFIED |
| BCBestway Concrete CO - Ft Lupton | Fort Lupton | — | ◇ UNVERIFIED |
| BCBestway Concrete Co-longmont | Longmont | — | ◇ UNVERIFIED |
| BCBestway Concrete CO Windsor | Windsor | — | ◇ UNVERIFIED |
| BCBestway Concrete - Firestein Pit | Greeley | — | ◇ UNVERIFIED |
| BCBestway Concrete - the Shores | Firestone | — | ◇ UNVERIFIED |
| BOBison Oil Well Cementing-109 N 6th Ave | Greeley | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Ft. Lupton Plant | Fort Lupton Area | — | ◇ UNVERIFIED |
| FRFrontier Ready Mix | Mead, 0.2 Mi Ne of | — | ◇ UNVERIFIED |
| FRFrontier Ready-mix - Johnstown | Johnstown | — | ◇ UNVERIFIED |
| GEGreeley Excavation | Greeley | — | ◇ UNVERIFIED |
| IRInland Ready Mix, LLC - Fort Lupton | Fort Lupton | — | ◇ UNVERIFIED |
| LPLindsay Precast LLC - Dacono | Dacono Area | — | ◇ UNVERIFIED |
| LRLoveland Ready Mix Concrete INC | Johnstown Area | — | ◇ UNVERIFIED |
| MMMartin Marietta - Del Camino Ready Mix | Longmont | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Platteville | — | ◇ UNVERIFIED |
| OIOwens Illinois Plant 28 | Greeley | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Nix S&g Mine | Platteville | — | ◇ UNVERIFIED |
| SCSiegrist Construction CO -del Camino Pit | Longmont | — | ◇ UNVERIFIED |
| SWSpn Well Services - Fort Lupton Facility | Fort Lupton Area | — | ◇ UNVERIFIED |
| URUnited Ready Mix | Platteville | — | ◇ UNVERIFIED |
| URUnited Ready Mix - Platteville | Platteville | — | ◇ UNVERIFIED |
| VCVarra Companies INC Ft Lupton Plant 2 | Fort Lupton | — | ◇ UNVERIFIED |
| WDWells Denver Precast | Brighton | — | ◇ UNVERIFIED |
| ZDZak Dirt - Portable Batch Plant | Mead | — | ◇ UNVERIFIED |
| RMRaptor Materials North BP1N | Greeley | 20–99 | ◐ LIKELY ACTIVE |
| RPReliance Precast Systems | Dacono | 20–99 | ◐ LIKELY ACTIVE |
| WCWells Concrete Sealants | Brighton | 1–19 | ◐ LIKELY ACTIVE |
| AIAggregate Industries-wcr, Inc.-johnstown | Johnstown | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Fort Lupton | — | ◇ UNVERIFIED |
| BCBestway Concrete Co-greeley | Greeley | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Portable Engine | Milliken | — | ◇ UNVERIFIED |
| CCCowan Concrete Products INC Batch Plt | Greeley | — | ◇ UNVERIFIED |
| GBGranite By Design | Fort Lupton | — | ◇ UNVERIFIED |
| LCLobato Construction - Mc-8t Plant | Platteville | — | ◇ UNVERIFIED |
