All Other Specialty Trade Contractors, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Rolled Steel Shape Manufacturing, Plate Work Manufacturing, Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers

Iron and Steel Mills, Steel Wire Drawing, Hardware Manufacturing

Other Aluminum Rolling and Drawing, Fiber Optic Cable Manufacturing

Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)

Steel Investment Foundries

All Other Specialty Trade Contractors, Other Fabricated Wire Product Manufacturing

Nonferrous (except Aluminum) Die-Casting Foundries, Other Nonferrous Foundries (except Die-Casting), Iron and Steel Forging, Nonferrous Forging, Metal Stamping

All Other Specialty Trade Contractors, Copper Wire (except Mechanical) Drawing

Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum), Metal Service Centers and Other Metal Merchant Wholesalers, Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers, Recyclable Material Merchant Wholesalers

Aluminum Foundries (except Die-Casting)

Aluminum Die-Casting Foundries

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

Rolled Steel Shape Manufacturing, Primary Aluminum Production, Aluminum Sheet, Plate, and Foil Manufacturing, Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Custom Roll Forming

Highway, Street, and Bridge Construction, Structural Steel and Precast Concrete Contractors, Siding Contractors, Other Foundation, Structure, and Building Exterior Contractors, Site Preparation Contractors

Boiler

All Other Plastics Product Manufacturing, Rubber and Plastics Hoses and Belting Manufacturing, Rubber Product Manufacturing for Mechanical Use, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Rolled Steel Shape Manufacturing

Coated and Laminated Paper Manufacturing, Iron and Steel Mills, Other Metal Container Manufacturing, Other Fabricated Wire Product Manufacturing, Other Communications Equipment Manufacturing

Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Welding and Soldering Equipment Manufacturing, Industrial Supplies Merchant Wholesalers, Tire Dealers

Structural Steel and Precast Concrete Contractors, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Ornamental and Architectural Metal Work Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Fabricated Pipe and Pipe Fitting Manufacturing, Machine Tool (Metal Cutting Types) Manufacturing, Hardware Merchant Wholesalers