Power and Communication Line and Related Structures Construction, Electrical Contractors, Other Building Equipment Contractors, Site Preparation Contractors, Heating Equipment (except Warm Air Furnaces) Manufacturing

Metal Heat Treating, Heating Equipment (except Warm Air Furnaces) Manufacturing, Industrial Process Furnace and Oven Manufacturing, Engineering Services

Heating Equipment (except Warm Air Furnaces) Manufacturing, Sporting and Recreational Goods and Supplies Merchant Wholesalers

All Other Miscellaneous Food Manufacturing, Fabric Coating Mills, All Other Converted Paper Product Manufacturing, Commercial Screen Printing, Unlaminated Plastics Film and Sheet (except Packaging) Manufacturing

Heating Equipment (except Warm Air Furnaces) Manufacturing, Audio and Video Equipment Manufacturing, Bare Printed Circuit Board Manufacturing, Semiconductor and Related Device Manufacturing, Electronic Coil, Transformer, and Other Inductor Manufacturing

All Other Miscellaneous Textile Product Mills

Steam and Air-Conditioning Supply, Plumbing, Heating, and Air-Conditioning Contractors, Heating Equipment (except Warm Air Furnaces) Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen

Power and Communication Line and Related Structures Construction, Electrical Contractors, Site Preparation Contractors, Heating Equipment (except Warm Air Furnaces) Manufacturing, Semiconductor and Related Device Manufacturing

Other Electric Power Generation, Power and Communication Line and Related Structures Construction, Roofing Contractors, Plumbing, Heating, and Air-Conditioning Contractors, Heating Equipment (except Warm Air Furnaces) Manufacturing

Residential Remodelers, Plumbing, Heating, and Air-Conditioning Contractors, Site Preparation Contractors, Sheet Metal Work Manufacturing, Air Purification Equipment Manufacturing

Sewage Treatment Facilities, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), Residential Remodelers, Commercial and Institutional Building Construction

Heating Equipment (except Warm Air Furnaces) Manufacturing

Steam and Air-Conditioning Supply, Plumbing, Heating, and Air-Conditioning Contractors, All Other Specialty Trade Contractors, Copper Rolling, Drawing, and Extruding, Power Boiler and Heat Exchanger Manufacturing

Heating Equipment (except Warm Air Furnaces) Manufacturing

Metal

Electroplating, Plating, Polishing, Anodizing, and Coloring, Heating Equipment (except Warm Air Furnaces) Manufacturing

Electrical Contractors, Plumbing, Heating, and Air-Conditioning Contractors, Other Commercial and Service Industry Machinery Manufacturing, Heating Equipment (except Warm Air Furnaces) Manufacturing

Crude Petroleum and Natural Gas Extraction, Drilling Oil and Gas Wells, Support Activities for Oil and Gas Operations, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders)

Heating Equipment (except Warm Air Furnaces) Manufacturing

Drilling Oil and Gas Wells, Support Activities for Oil and Gas Operations, Other Electric Power Generation, Natural Gas Distribution, Water Supply and Irrigation Systems

Air Purification Equipment Manufacturing, Industrial and Commercial Fan and Blower Manufacturing, Heating Equipment (except Warm Air Furnaces) Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Pump and Pumping Equipment Manufacturing

Plumbing, Heating, and Air-Conditioning Contractors, Sheet Metal Work Manufacturing, Heating Equipment (except Warm Air Furnaces) Manufacturing, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use

Plumbing, Heating, and Air-Conditioning Contractors, Other Building Equipment Contractors, Heating Equipment (except Warm Air Furnaces) Manufacturing

Hand and Edge Tool Manufacturing, Saw Blade and Handsaw Manufacturing, Metal Heat Treating, Mining Machinery and Equipment Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing

Heating Equipment (except Warm Air Furnaces) Manufacturing, Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing, Wood Office Furniture Manufacturing, Office Furniture (except Wood) Manufacturing, Sporting and Athletic Goods Manufacturing