| NINorgren INC | Littleton | CO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| RBRicker Bartlett INC. (dba) Colorado Castings | Estes Park | CO | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| RMRosedale Marketing Dba Port-a Stall | Erie | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SASilver Anvil Engineering Corporation | Golden | CO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| SVSuper Vacuum Mfg CO INC | Loveland | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| ASAccu-Tube - Sheridan | Englewood | CO | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| OCOrigin Castings and Coatings, LLC | Windsor | CO | Primary Metal Manufacturing331313 | — | ◐ LIKELY ACTIVE |
| VIVFORGE INC dba THIXOCAST INC | Lakewood | CO | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| DLDualDraw, LLC | Denver | CO | Primary Metal Manufacturing331314 | 1-19 | ◇ UNVERIFIED |
| MRMonarch Residential Vaults & Ironworks LLC | Durango | CO | Primary Metal Manufacturing331111 | 1-19 | ◇ UNVERIFIED |
| 6S6800 Stapleton, LLC | Denver | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| AIAmerican Iron & Metal CO. INC. | Fowler | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| ADAnderson Die Casting, LLC | Englewood | CO | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| ACApex Consulting | Thornton | CO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| BFBlue Fabrication INC | Delta | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| CPClimax Performance Material | Golden | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| EBElectra Beta LLC | Broomfield | CO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| FCFreeport-mcmoran Copper & Gold | Salida | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| GSGold Star Holdings LLC | Byers | CO | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| HRHarris Rebar Salt Lake INC | Commerce City | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| HCHarsco Corporation | Pueblo | CO | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| IWIndustrial Welding & Fabrications LLC | Pueblo | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| JAJoseph's Artworks, INC. | Englewood | CO | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| LFLb Foster Company- Arp Plant | Pueblo | CO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| MAMad Acres LLC | Morrison | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PPParallel Products of Colorado | Greeley | CO | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| PCPeak Collision 2 | Littleton | CO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| PPmr | Englewood | CO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| PMPrecious Metal Refiners, INC. | Englewood | CO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| PCPrototype Castings INC. | Commerce City | CO | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| QBQuanex Building Products | Denver | CO | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| RBRicker Bartlett INC. (dba) Col Orado Castings | Loveland | CO | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| RMRocky Mountain Rebar | Delta | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RIRoper Industries INC | Denver | CO | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
 Skyline Steel | Canon City | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
 Springs Fabrication, INC | Loveland | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TCTimminco Corporation (was Dow Chemical) | Aurora | CO | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| TWTodd's Welding INC. | Fruita | CO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| VNVoestalpine Nortrak | Pueblo | CO | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| W6West 62nd Ave Holdings LLC | Denver | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WMWestern Metals Recycling, LLC | Pueblo | CO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
