Structural Steel and Precast Concrete Contractors, Other Foundation, Structure, and Building Exterior Contractors, Prefabricated Metal Building and Component Manufacturing, Fabricated Structural Metal Manufacturing, Ornamental and Architectural Metal Work Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Metal Stamping, Prefabricated Metal Building and Component Manufacturing, Fabricated Structural Metal Manufacturing, Ornamental and Architectural Metal Work Manufacturing

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

Farm Labor Contractors and Crew Leaders, Support Activities for Forestry, Support Activities for Oil and Gas Operations, Support Activities for Metal Mining, Support Activities for Nonmetallic Minerals (except Fuels) Mining

Prefabricated Metal Building and Component Manufacturing, All Other Miscellaneous Fabricated Metal Product Manufacturing, All Other Industrial Machinery Manufacturing, Other Commercial and Service Industry Machinery Manufacturing

Metal Stamping, Prefabricated Metal Building and Component Manufacturing

Iron and Steel Mills, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Rolled Steel Shape Manufacturing, Primary Aluminum Production, Aluminum Extruded Product Manufacturing

Plumbing, Heating, and Air-Conditioning Contractors, Iron and Steel Forging, Nonferrous Forging, Prefabricated Metal Building and Component Manufacturing, Fabricated Structural Metal Manufacturing

Prefabricated Metal Building and Component Manufacturing, Machine Shops, All Other Miscellaneous Fabricated Metal Product Manufacturing

New Single-Family Housing Construction (except Operative Builders), Commercial and Institutional Building Construction, Framing Contractors, Glass and Glazing Contractors, Roofing Contractors