| NINorgren INC | Littleton | — | ◇ UNVERIFIED |
| PAPeerless Alloy INC | Denver | — | ◇ UNVERIFIED |
| PSP&l Scrap Metal Iron INC | Colorado Springs | — | ◇ UNVERIFIED |
| RBRicker Bartlett INC. (dba) Colorado Castings | Estes Park | — | ◇ UNVERIFIED |
| RMRocky Mountain Radiographic | Englewood | — | ◇ UNVERIFIED |
| RMRosedale Marketing Dba Port-a Stall | Erie | — | ◇ UNVERIFIED |
| SASilver Anvil Engineering Corporation | Golden | — | ◇ UNVERIFIED |
| SDStainless Designs Inc.cn | Fort Collins | — | ◇ UNVERIFIED |
| SSSterling Stainless Tube CORP | Englewood | — | ◇ UNVERIFIED |
| SVSuper Vacuum Mfg CO INC | Loveland | — | ◇ UNVERIFIED |
| WFWinner Foundries & Mfg CO | Arvada | — | ◇ UNVERIFIED |
| WRWm Recycle America - 48th Ave Facility | Denver | — | ◇ UNVERIFIED |
| ASAccu-Tube - Sheridan | Englewood | 20–99 | ◐ LIKELY ACTIVE |
| EPEVRAZ Pueblo | Pueblo | 500+ | ◐ LIKELY ACTIVE |
| OCOrigin Castings and Coatings, LLC | Windsor | — | ◐ LIKELY ACTIVE |
| PNPalmer North America LLC | Pueblo | 1–19 | ◐ LIKELY ACTIVE |
| VIVFORGE INC dba THIXOCAST INC | Lakewood | 20–99 | ◐ LIKELY ACTIVE |
| VFV Forge, INC. | Lakewood | — | ◇ UNVERIFIED |
| 6S6800 Stapleton, LLC | Denver | — | ◇ UNVERIFIED |
| ARAction Recycling CORP | Denver | — | ◇ UNVERIFIED |
| AEAmax Extractive Research & Development | Golden | — | ◇ UNVERIFIED |
| AIAmerican Iron & Metal CO. INC. | Fowler | — | ◇ UNVERIFIED |
| ADAnderson Die Casting, LLC | Englewood | — | ◇ UNVERIFIED |
| ACApex Consulting | Thornton | — | ◇ UNVERIFIED |
| AAArapahoe Aluminum Foundry | Englewood | — | ◇ UNVERIFIED |
| AMArk-valley Metal Processing INC | Pueblo | — | ◇ UNVERIFIED |
| BFBlue Fabrication INC | Delta | — | ◇ UNVERIFIED |
| CMCast Machined Products, INC. | Denver | — | ◇ UNVERIFIED |
| CPClimax Performance Material | Golden | — | ◇ UNVERIFIED |
| CSColorado Steel & Wire CO | Loveland | — | ◇ UNVERIFIED |
| CIColumbine Iron & Metal | Erie | — | ◇ UNVERIFIED |
| DLDualDraw, LLC | Denver | — | ◇ UNVERIFIED |
| FCFreeport-mcmoran Copper & Gold | Salida | — | ◇ UNVERIFIED |
| GSGold Star Holdings LLC | Byers | — | ◇ UNVERIFIED |
| HRHarris Rebar Salt Lake INC | Commerce City | — | ◇ UNVERIFIED |
| HCHarsco Corporation | Pueblo | — | ◇ UNVERIFIED |
 High Tek Tube CORP | Denver | — | ◇ UNVERIFIED |
| IMIdarado Mine | Ouray, 5.1 Mi S of | — | ◇ UNVERIFIED |
| IWIndustrial Welding & Fabrications LLC | Pueblo | — | ◇ UNVERIFIED |
| IInterpro | Boulder | — | ◇ UNVERIFIED |
| JAJoseph's Artworks, INC. | Englewood | — | ◇ UNVERIFIED |
| LELands End Sculpture Center, INC. | Paonia | — | ◇ UNVERIFIED |
| LFLb Foster Company- Arp Plant | Pueblo | — | ◇ UNVERIFIED |
| LALeo's Automotive LLC | Littleton | — | ◇ UNVERIFIED |
| MAMad Acres LLC | Morrison | — | ◇ UNVERIFIED |
| NSNatl Smelting & Refining CO | Commerce City | — | ◇ UNVERIFIED |
| PPParallel Products of Colorado | Greeley | — | ◇ UNVERIFIED |
| PPmr | Englewood | — | ◇ UNVERIFIED |
| PMPrecious Metal Refiners, INC. | Englewood | — | ◇ UNVERIFIED |
| PWPrecision Welding LLC | Wellington | — | ◇ UNVERIFIED |
