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Steel Group
Steel Service Centers
National Material Company, L.L.C.
National Material de Mexico
Interstate Steel Company
National Metal Resources, L.L.C.
Steel Processing
National Processing Company
National Precision Blanking
Interstate Steel Processing
National Galvanizing, L.P.
Stainless and Alloy
Combined Metals of Chicago, L.L.C.
Combined Metals of Michigan, L.L.C.
Elgiloy Specialty Metals Division
Aluminum
Taber Extrusions, LLC
Tower Extrusions, LTD.
Tower Metal Products, L.P.
ADC Die Casting and Manufacturing, L.P.
Ferrous Raw Material
National Material Trading, LLC
Maryland Pig Services, L.P.
Related Operations
OSI Furniture, LLC
Cannonball HNP, LLC
National Coating Technology
Metal Resources International, L.L.C.
Barrett Trailers, L.L.C.
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