- A.K. Steel Holding Corporation
- ACME Metals, Inc.
- Aircraft Alloys
- Alcan Aluminum Plant
- ALCOA Aluminum
- ALCOA Aluminum Plant Vancouver
- ALCOA Aluminum Plant Wenatchee
- Allegheny Ludlum Steel Corporation
- Allied Metal Company
- AMC PMC PTI MTI Celanese
- AmeriSteel
- Anaconda Aluminum
- Anaconda Copper Mill
- Animax Copper Smelting
- ARMCO Inc.
- Bath Iron Works
- Bayou Steel Corporation
- Bethlehem Steel Company
- Birmingham Steel Corporation
- Bohler Steel
- Butte
- California Steel Industries Inc.
- Carley Foundry Inc.
- Cascade Steel Rolling Mills
- Celanese Corporation
- Chicago Heights Steel
- Clingan Steel Inc.
- Cold Metal Products Inc.
- Columbia Aluminum
- Commercial Metals
- Crucible Materials Corp.
- Crucible Metals Corporation
- Crucible Steel Company of America
- Dotson Company Inc.
- Electralloy
- Ensley Steel Works
- Fabrique de Fer de Charleroi Inc.
- Granite City Steel Company
- Gulf States Steel Company
- Harvey Aluminum
- High Temp Metals
- INTALCO Aluminum
- INTALCO Aluminum Cherry Point
- INTALCO Aluminum Ferndale
- Ispat International
- J&H Power Group Inc.
- J&L Specialty Steel
- J.G. Braun Company
- Kaiser Aluminum
- Kaiser Aluminum Spokane
- Kaiser Aluminum Tacoma
- Kennicott Copper Mine
- Keystone Steel & Wire Co.
- LTV Steel Company
- Magma Copper Company
- Marion Steel Company
- Martin-Marietta Aluminum Corporation
- McDonald Steel Plant
- Metalplate Galvanizing
- National Steel
- Nikkin Flux Corp.
- Northwestern Steel & Wire
- Nucor Corporation
- O’Hare Spring Company Inc.
- Oregon Steel Mills Inc.
- Phelps Dodge Copper Plant
- Plymouth Steel
- Quality Tubing Inc.
- Reynolds Metals Aluminum Plant
- Rome Strip Steel
- Rouge Industries Inc.
- Sheffield Steel Corporation
- Sloss Industries Corporation
- Sloss Sheffield Steel and Iron Sloss Mines
- Steel Resource
- The Allied Metal Company
- Titan Steel Corporation
- Tri Star Metals
- Trussbilt
- TXI Chaparral
- U.S. Steel Mill
- USS-Posco Industries
- USX Corporation
- Weirton National Steel
- Wheeling-Pittsburgh Steel Corporation
- Willamette Iron & Steel Yard