Timber Tract Operations, Other Heavy and Civil Engineering Construction, Electrical Contractors, Painting and Wall Covering Contractors, Flooring Contractors

Iron Foundries, Steel Investment Foundries, Steel Foundries (except Investment), Aluminum Die-Casting Foundries, Nonferrous (except Aluminum) Die-Casting Foundries

Broadwoven Fabric Finishing Mills, All Other Miscellaneous Textile Product Mills, Men's and Boys' Cut and Sew Apparel Contractors, Men's and Boys' Cut and Sew Shirt (except Work Shirt) Manufacturing, Men's and Boys' Cut and Sew Trouser, Slack, and Jean Manufacturing

Power and Communication Line and Related Structures Construction, Other Heavy and Civil Engineering Construction, Electrical Contractors, Other Building Equipment Contractors, Rolled Steel Shape Manufacturing

Industrial Building Construction, Structural Steel and Precast Concrete Contractors, Other Foundation, Structure, and Building Exterior Contractors, All Other Specialty Trade Contractors, Rolled Steel Shape Manufacturing

Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum), Photographic Equipment and Supplies Merchant Wholesalers, Office Equipment Merchant Wholesalers, Other Commercial Equipment Merchant Wholesalers, Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers

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Copper Wire (except Mechanical) Drawing, Fiber Optic Cable Manufacturing

Rolled Steel Shape Manufacturing, Small Arms Ammunition Manufacturing, Other Commercial and Service Industry Machinery Manufacturing, Air Purification Equipment Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Sheet Metal Work Manufacturing, Machine Shops, Precision Turned Product Manufacturing, Fluid Power Valve and Hose Fitting Manufacturing

Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Iron and Steel Forging, Nonferrous Forging, Sheet Metal Work Manufacturing

Iron and Steel Mills

Highway, Street, and Bridge Construction, Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors, Masonry Contractors, Other Foundation, Structure, and Building Exterior Contractors

Aluminum Sheet, Plate, and Foil Manufacturing, Sheet Metal Work Manufacturing, Other Metal Container Manufacturing

Highway, Street, and Bridge Construction, Aluminum Sheet, Plate, and Foil Manufacturing, Fabricated Structural Metal Manufacturing, Plate Work Manufacturing, Spring (Heavy Gauge) Manufacturing

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All Other Miscellaneous Chemical Product and Preparation Manufacturing, Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Other Chemical and Allied Products Merchant Wholesalers

Structural Steel and Precast Concrete Contractors, Framing Contractors, Other Foundation, Structure, and Building Exterior Contractors, Other Building Equipment Contractors, Finish Carpentry Contractors

Steam and Air-Conditioning Supply, Plumbing, Heating, and Air-Conditioning Contractors, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use