Natural Gas Distribution, Water Supply and Irrigation Systems, Sewage Treatment Facilities, Steam and Air-Conditioning Supply, New Multifamily Housing Construction (except Operative Builders)

Other Building Equipment Contractors, All Other Specialty Trade Contractors, Wood Preservation, Steel Wire Drawing

Oil and Gas Pipeline and Related Structures Construction, Structural Steel and Precast Concrete Contractors, Other Foundation, Structure, and Building Exterior Contractors, Plumbing, Heating, and Air-Conditioning Contractors, Iron and Steel Mills

All Other Miscellaneous Nonmetallic Mineral Product Manufacturing, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Primary Aluminum Production, Iron Foundries, Sheet Metal Work Manufacturing

Corrugated and Solid Fiber Box Manufacturing, Coated and Laminated Paper Manufacturing, Die-Cut Paper and Paperboard Office Supplies Manufacturing, Envelope Manufacturing, Adhesive Manufacturing

Poured Concrete Foundation and Structure Contractors, Other Foundation, Structure, and Building Exterior Contractors, Electrical Contractors, Plumbing, Heating, and Air-Conditioning Contractors, Other Building Equipment Contractors

New Multifamily Housing Construction (except Operative Builders), Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors, Other Building Finishing Contractors, Site Preparation Contractors

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Rolled Steel Shape Manufacturing, Steel Wire Drawing, Primary Aluminum Production, Aluminum Sheet, Plate, and Foil Manufacturing

Iron and Steel Mills

Water Supply and Irrigation Systems, Sewage Treatment Facilities, Steam and Air-Conditioning Supply, Plastics Pipe and Pipe Fitting Manufacturing, Iron Foundries

Rolled Steel Shape Manufacturing, Precision Turned Product Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

Industrial Building Construction, Commercial and Institutional Building Construction, Roofing Contractors, Siding Contractors, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

Other Electric Power Generation, Sewage Treatment Facilities, All Other Basic Organic Chemical Manufacturing, Nitrogenous Fertilizer Manufacturing, Iron Foundries

Iron and Steel Mills

All Other Specialty Trade Contractors, Wood Preservation, Iron and Steel Mills, Steel Wire Drawing, Ornamental and Architectural Metal Work Manufacturing

Water Supply and Irrigation Systems, Residential Remodelers, Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction

Rolled Steel Shape Manufacturing, Fabricated Structural Metal Manufacturing, Sheet Metal Work Manufacturing, Metal Tank (Heavy Gauge) Manufacturing, Other Metal Container Manufacturing

Steel Wire Drawing

Aluminum Foundries (except Die-Casting)