Iron and Steel Mills, Electrometallurgical Ferroalloy Product Manufacturing, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Secondary Smelting and Alloying of Aluminum, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)

Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum), Iron Foundries, Steel Investment Foundries, Steel Foundries (except Investment)

Iron and Steel Mills, Electrometallurgical Ferroalloy Product Manufacturing, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Secondary Smelting and Alloying of Aluminum, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)

Unlaminated Plastics Film and Sheet (except Packaging) Manufacturing, Plastics Pipe and Pipe Fitting Manufacturing, Urethane and Other Foam Product (except Polystyrene) Manufacturing, All Other Plastics Product Manufacturing, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

Secondary Smelting and Alloying of Aluminum, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum), Nonferrous (except Aluminum) Die-Casting Foundries

Industrial Building Construction, Commercial and Institutional Building Construction, Power and Communication Line and Related Structures Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction

Iron and Steel Mills, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Rolled Steel Shape Manufacturing, Primary Aluminum Production, Secondary Smelting and Alloying of Aluminum