| ACAmerican Casting | Pryor | OK | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
| BMBison Metals Technologies LLC | Shawnee | OK | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
| EAEj Ardmore Inc- Foundry | Ardmore | OK | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
M-d Building Products, INC. | Oklahoma City | OK | Primary Metal Manufacturing331318 | 500+ | ● ACTIVE |
| UOUmicore Optical Materials USA INC. | Quapaw | OK | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
Ddb Ulimited INC | Pauls Valley | OK | Primary Metal Manufacturing331318 | 20-99 | ● ACTIVE |
| DRDub Ross Company, INC. | Oklahoma City | OK | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Expanded Solutions LLC | Wewoka | OK | Primary Metal Manufacturing331221 | — | ● ACTIVE |
| ASAlbright Steel & Wire CO | Oklahoma City | OK | Primary Metal Manufacturing331110 | — | ● ACTIVE |
Ground Zero Shelters CO. | Perry | OK | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Parrish Enterprises, LTD. | Enid | OK | Primary Metal Manufacturing331524 | — | ● ACTIVE |
| PSPatriot Steel LLC | Harrah | OK | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Webco Industries, INC. | Sand Springs | OK | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Westwin Elements, INC. | Oklahoma City | OK | Primary Metal Manufacturing331410 | — | ● ACTIVE |
| MAMid American Steel and Wire CO - Mill | Madill | OK | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| RAReal Alloy Recycling LLC | Sapulpa | OK | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |
Webco Industries INC Kellyville Specialty Tube | Kellyville | OK | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
Webco Industries, INC. Ok Dist. Div | Tulsa | OK | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
Blue Whale Materials LLC | Bartlesville | OK | Textile Product Mills314999 | 20-99 | ◐ LIKELY ACTIVE |
| CSCmc Steel Oklahoma | Durant | OK | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| DSDw-national Standard-stillwater LLC | Stillwater | OK | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| SSSand Springs | Sand Springs | OK | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| TDTubacex Durant INC. | Durant | OK | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| WIWebco Industries, Star Center Tube | Sand Springs | OK | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| CFClaremore Faclty | Claremore | OK | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| JZJohn Zink Apache Facility | Tulsa | OK | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| SUStarpipe USA Dba Sp Foundry / Sp Foundry | South Coffeyville | OK | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| VSVallourec Star LP / Muskogee Plt | Muskogee | OK | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AIAlpha Investment Casting CORP / Alpha Investment Casting CORP | Tulsa | OK | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| AFAmerican Foundry Group / American Alloy Ii | Muskogee | OK | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| AFAmerican Foundry Group LLC - Bixby | Bixby | OK | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| ARArk Ramos Foundry & Manufacturing CO INC | Oklahoma City | OK | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| GIGray Iron Fndry | Blackwell | OK | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco/tulsa Multiplex | Tulsa | OK | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| OIOklahoma Investment Casting CO | Blackwell | OK | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| PCPt Central Machine and Tool Company | Enid | OK | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| SASlw Automotive INC / Sallisaw Plt | Sallisaw | OK | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| SWSouthwestern Wire, INC. | Norman | OK | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| TCThe Crucible LLC | Norman | OK | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| TFTonkawa Foundry INC / Tonkawa Foundry | Tonkawa | OK | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VNValmont Newmark | Tulsa | OK | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
Webco Industries, INC. Mannford Specialty Tube | Mannford | OK | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
Webco Industries, INC. Swt Cooper Bldg | Sand Springs | OK | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ASAcs Steel Co., LLC | Tulsa | OK | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| LALos Angeles Boiler Works Inc. | Blackwell | OK | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| OSOps Sales Company | Dewey | OK | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PPPelco Products INC. | Edmond | OK | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| TFTaylor Forge Engineered Systems Tulsa | Tulsa | OK | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| HCHorsehead Corp/bartlesville Div | Bartlesville | OK | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| YIYaffe Iron and Metal CO - Muskogee | Muskogee | OK | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |