Structural Steel and Precast Concrete Contractors, Framing Contractors, Other Foundation, Structure, and Building Exterior Contractors, Iron and Steel Mills, Plate Work Manufacturing

Commercial and Institutional Building Construction, Roofing Contractors, Siding Contractors, Drywall and Insulation Contractors, Finish Carpentry Contractors

Commercial and Institutional Building Construction, Other Heavy and Civil Engineering Construction, Structural Steel and Precast Concrete Contractors, Wood Preservation, Iron and Steel Mills

Other Building Equipment Contractors, Other Building Finishing Contractors, Site Preparation Contractors, All Other Specialty Trade Contractors, Iron and Steel Mills

Other Heavy and Civil Engineering Construction, Iron and Steel Mills, Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers, Recyclable Material Merchant Wholesalers, Line-Haul Railroads