Iron and Steel Mills, Electrometallurgical Ferroalloy Product Manufacturing, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Secondary Smelting and Alloying of Aluminum, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)

Other Electric Power Generation, Power and Communication Line and Related Structures Construction, Roofing Contractors, Plumbing, Heating, and Air-Conditioning Contractors, Site Preparation Contractors

Aluminum Sheet, Plate, and Foil Manufacturing, Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Iron and Steel Forging, Semiconductor Machinery Manufacturing, Photographic and Photocopying Equipment Manufacturing

Electric Bulk Power Transmission and Control, Electric Power Distribution, Electronic Connector Manufacturing, Printed Circuit Assembly (Electronic Assembly) Manufacturing, Other Electronic Component Manufacturing

Electronic Coil, Transformer, and Other Inductor Manufacturing, Other Electronic Component Manufacturing, Electric Lamp Bulb and Part Manufacturing, Residential Electric Lighting Fixture Manufacturing, Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing

All Other Specialty Trade Contractors, Telephone Apparatus Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing, Audio and Video Equipment Manufacturing

Printed Circuit Assembly (Electronic Assembly) Manufacturing, Other Electronic Component Manufacturing, Other Communication and Energy Wire Manufacturing, Current-Carrying Wiring Device Manufacturing, Aircraft Manufacturing

Audio and Video Equipment Manufacturing, Electronic Coil, Transformer, and Other Inductor Manufacturing, Electronic Connector Manufacturing, Electric Lamp Bulb and Part Manufacturing, Residential Electric Lighting Fixture Manufacturing

All Other Plastics Product Manufacturing, Electronic Computer Manufacturing, Telephone Apparatus Manufacturing, Other Communications Equipment Manufacturing, Other Electronic Component Manufacturing

Power and Communication Line and Related Structures Construction, Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors, Electrical Contractors, Site Preparation Contractors

Other Communication and Energy Wire Manufacturing

Electronic Computer Manufacturing, Computer Storage Device Manufacturing, Telephone Apparatus Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Other Communications Equipment Manufacturing

Machine Shops, Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing, Electronic Computer Manufacturing, Other Communications Equipment Manufacturing, Semiconductor and Related Device Manufacturing

Electrical Contractors, Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Telephone Apparatus Manufacturing, Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals, Other Communication and Energy Wire Manufacturing

Plastics Pipe and Pipe Fitting Manufacturing, All Other Miscellaneous Fabricated Metal Product Manufacturing, Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing, Fiber Optic Cable Manufacturing, Other Communication and Energy Wire Manufacturing

Fiber, UPS

Electric Power Distribution, Hardware Manufacturing, Small Arms Manufacturing, Other Communication and Energy Wire Manufacturing, All Other Miscellaneous Electrical Equipment and Component Manufacturing

rock drill

Plumbing, Heating, and Air-Conditioning Contractors, Storage Battery Manufacturing, Other Communication and Energy Wire Manufacturing, Current-Carrying Wiring Device Manufacturing, Software Publishers

Power and Communication Line and Related Structures Construction, Electrical Contractors, Electronic Computer Manufacturing, Telephone Apparatus Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing