US Steel

Norhteast
• Fairless Works - Fairless Hills, PA
  
• Homestead Works - Homestead PA
  

Midwest
• Oliver Iron Mines
  
• South Works
  
• Duluth Works - formerly American Steel & Wire
  

South
• Fairfield Works - Birmingham, AL
  

West
• Pittsburg, CA
  
• Columbia Geneva Steel
  

• Laclede Steel
  
• U.S. Pipe and Foundry
  
• Standard Steel
  
• Kaiser Steel
  
• Youngstown Sheet & Tube