| PSPelco Structural, LLC | Claremore | 100–499 | ◐ LIKELY ACTIVE |
| PMPrecision Metal Fab INC. | Ponca City | 20–99 | ◐ LIKELY ACTIVE |
| RORoll Offs of America | Durant | 100–499 | ◐ LIKELY ACTIVE |
| SHSlim Haney Machining, INC. | Tulsa | 20–99 | ◐ LIKELY ACTIVE |
| SUSouthwest United Industries INC | Tulsa | — | ▲ REPORTED CLOSED |
| TFTaylor Forge Engineered Systems Tulsa | Tulsa | 20–99 | ◐ LIKELY ACTIVE |
| TDTed Davis Enterprises, INC. | Oklahoma City | — | ◐ LIKELY ACTIVE |
| TITek-fins, INC. | Tulsa | 100–499 | ◐ LIKELY ACTIVE |
| TMTexoma Millwright and Welding, INC. | Durant | — | ◐ LIKELY ACTIVE |
| TGThe G.C. Broach Co. Office | Tulsa | 1–19 | ◐ LIKELY ACTIVE |
| TBThomas & Betts | Tulsa | — | ◐ LIKELY ACTIVE |
| UIUnarco Ind LLC / Wagoner Faclty | Wagoner | — | ◐ LIKELY ACTIVE |
| VIValmont Industries Tulsa | Tulsa | 100–499 | ◐ LIKELY ACTIVE |
| VLVentaire LLC | Tulsa | 20–99 | ◐ LIKELY ACTIVE |
| VEVictory Energy Operations | Collinsville | 100–499 | ◐ LIKELY ACTIVE |
| VSV & S Schuler Tubular Products | Muskogee | 20–99 | ◐ LIKELY ACTIVE |
| WFWedlake Fabricating, INC. | Tulsa | 100–499 | ◐ LIKELY ACTIVE |
| WMWilco Mach and Fabrication INC / Nov Wilco North | Marlow | — | ◐ LIKELY ACTIVE |
| 1E10055 E 56th St N | Tulsa | — | ◐ LIKELY ACTIVE |
| ACAircraft Cylinders of America INC | Tulsa | — | ◐ LIKELY ACTIVE |
| ALAlfa Laval, INC. US Spiral Heat Exchanger (she) | Broken Arrow | — | ◐ LIKELY ACTIVE |
| ASAlliance Steel, INC. | Oklahoma City | — | ◐ LIKELY ACTIVE |
| APAmeristar Perimeter Security USA INC / Ameristar Perimeter Security USA INC | Tulsa | — | ◐ LIKELY ACTIVE |
| CCaptiveaire | Muskogee | — | ◐ LIKELY ACTIVE |
| CCCarlson Company | Tulsa | — | ◐ LIKELY ACTIVE |
| CICentek INC | Oklahoma City | — | ◐ LIKELY ACTIVE |
| CChart | Tulsa | — | ◐ LIKELY ACTIVE |
| CPChromium Plating Company | Tulsa | — | ◐ LIKELY ACTIVE |
| CBCircle B Measurement and Fabrication, LLC | Tulsa | — | ◐ LIKELY ACTIVE |
| CRCmc Rebar - Oklahoma City | Oklahoma City | — | ◐ LIKELY ACTIVE |
| DCDick Conner Correctional Center | Hominy | — | ◐ LIKELY ACTIVE |
| EIEastpointe Industries | Muskogee | — | ◐ LIKELY ACTIVE |
| FEForum Energy Technologies | Guthrie | — | ◐ LIKELY ACTIVE |
| GMGaraga Mid-america Door | Ponca City | — | ◐ LIKELY ACTIVE |
| KIKams INC. | Oklahoma City | — | ◐ LIKELY ACTIVE |
| KIKimray INC. | Oklahoma City | — | ◐ LIKELY ACTIVE |
| NANov Ameron Tulsa Pole Products Welding & Fabrication | Tulsa | — | ◐ LIKELY ACTIVE |
Oerlikon Balzers Coating USA INC. | Oklahoma City | — | ◐ LIKELY ACTIVE |
| PPPride Plating INC | Grove | — | ◐ LIKELY ACTIVE |
Quality Metal Finishing INC | Oklahoma City | — | ◐ LIKELY ACTIVE |
| RHReda Hps | Owasso | — | ◐ LIKELY ACTIVE |
| RARolled Alloys | Tulsa | — | ◐ LIKELY ACTIVE |
Steelfab, INC. - Texas Division | Durant | — | ◐ LIKELY ACTIVE |
| SNSwep North America | Tulsa | — | ◐ LIKELY ACTIVE |
| TMTulsa Metal Finishing Company | Tulsa | — | ◐ LIKELY ACTIVE |
| USUniversal Sandblasting and Coating INC / 1800 S 49th W Ave | Tulsa | — | ◐ LIKELY ACTIVE |
| VIValmont Industries INC | Tulsa | — | ◐ LIKELY ACTIVE |
| ATAlliance Tank Service LLC / Cushing Facility | Cushing | — | ◇ UNVERIFIED |
| AIAsc, INC. | Tulsa | — | ◇ UNVERIFIED |
| BCBalon CORP / Eastern Valve Mfg Facility | Oklahoma City | — | ◇ UNVERIFIED |