| RMRinker Materials - Grand Junction | Grand Junction | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| RMRocky Mountain Ready Mix Concrete, Incorporated | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| RCRocla Concrete Tie Inc-Pueblo | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| RBRw Busse Excavating | Grand Lake | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| SMSmith's Materials - Concrete Batch Plant | Dolores 2.3 Mi. Sw of | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix - Arvada Mix Plant | Arvada Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| SPSummit Pressed Brick & Tile CO | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327120 | 20-99 | ◐ LIKELY ACTIVE |
| SSSunset Stone | Castle Rock | CO | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| WAWestern Aggregates Incorporated (txi) | Boulder | CO | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| WSWestern Slope Aggregate | Carbondale | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| WBWhitewater Building Materials - 940 S 10 | Grand Junction | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| APAll-rite Paving & Redi-mix, INC | Lamar | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| ASAsphalt Specialties Co., INC. Plant #3 | Firestone Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| BRBoulder Ready Mix Concrete INC | Boulder | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| CCCastle Concrete Company Snyder Quarry | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327000 | — | ◐ LIKELY ACTIVE |
| CCCompact Ceramics LLC | Penrose | CO | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| CTCoorstek - Table Mountain Center East | Arvada | CO | Nonmetallic Mineral Product Manufacturing327110 | — | ◐ LIKELY ACTIVE |
| HRHard Rock & Redi Mix INC Main Plant | Salida | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Francis | Longmont Area | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| IHInterstate Highway Const- Gen 72-34 | Fountain 3.2 Mi. W of | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| IHInterstate Highway Construction | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| LPLafarge Powers Ready Mix | Carbondale | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| LRLoveland Ready Mix | Loveland | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| MCMountain Cement CO | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| MPMountain Park Concrete INC | Granby | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group Dba Telluride Gravel | Telluride | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group INC Dba Four Corners | Pagosa Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group INC Dba United CO of | Paonia | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| RRRitchey's Redi Mix INC | Wray | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| RIRockwool Industries INC | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327993 | — | ◐ LIKELY ACTIVE |
| RRR&t Redi Mix - 7355 Colorado 196 | Lamar 3.3 Mi. N of | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| UGUS Gypsum Denver | Denver | CO | Nonmetallic Mineral Product Manufacturing327420 | — | ◐ LIKELY ACTIVE |
| VLValcrete - Limon Plant | Limon | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◐ LIKELY ACTIVE |
| 7W70 W Trucking - Fraser Ready Mix Plant | Fraser | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ARAbbott Ready Mix INC | Ridgway | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries | Windsor | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries, Golden Ready Mix Plant | Golden | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Franktown | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Louisville | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr, INC. | Sedalia | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr, INC. | Fort Collins | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC - Brighton Ready Mix | Brighton | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC Cs-east Ready Mix Plant | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC Firestone Ready Mix Plant | Longmont | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC Franktown Ready Mix Plant | Franktown | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr, INC. -havana | Aurora | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries-wcr INC -ww Farms P | Greeley | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |