Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers, Metal Service Centers and Other Metal Merchant Wholesalers

Roofing, Siding, and Insulation Material Merchant Wholesalers

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

Other Electric Power Generation, Electric Power Distribution, Water Supply and Irrigation Systems, Sewage Treatment Facilities, Industrial Building Construction

New Single-Family Housing Construction (except Operative Builders), Furniture Merchant Wholesalers, Home Furnishing Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers

Industrial Building Construction, Commercial and Institutional Building Construction, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Custom Roll Forming, Prefabricated Metal Building and Component 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

Roofing, Siding, and Insulation Material Merchant Wholesalers

Motor Vehicle Supplies and New Parts Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers, Photographic Equipment and Supplies Merchant Wholesalers

Motor Vehicle Supplies and New Parts Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Office Equipment Merchant Wholesalers, Electrical and Electronic Appliance, Television, and Radio Set Merchant Wholesalers

Corn Farming, New Multifamily Housing Construction (except Operative Builders), Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction

Other Electric Power Generation, Natural Gas Distribution, Steam and Air-Conditioning Supply, Industrial Building Construction, Commercial and Institutional Building Construction

Automobile and Other Motor Vehicle Merchant Wholesalers, Motor Vehicle Supplies and New Parts Merchant Wholesalers, Furniture Merchant Wholesalers, Home Furnishing Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers

Water Supply and Irrigation Systems, Steam and Air-Conditioning Supply, Automobile and Other Motor Vehicle Merchant Wholesalers, Motor Vehicle Supplies and New Parts Merchant Wholesalers, Tire and Tube Merchant Wholesalers

Sign Manufacturing, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers

Natural Gas Distribution, Steam and Air-Conditioning Supply, Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction

Brick and Structural Clay Tile Manufacturing, Ceramic Wall and Floor Tile Manufacturing, Concrete Block and Brick Manufacturing, Other Concrete Product Manufacturing, Cut Stone and Stone Product Manufacturing

Home Furnishing Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers

Furniture Merchant Wholesalers, Home Furnishing Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers

Sawmills, Wood Preservation, Hardwood Veneer and Plywood Manufacturing, Softwood Veneer and Plywood Manufacturing, Engineered Wood Member (except Truss) Manufacturing

Furniture Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Office Equipment Merchant Wholesalers

New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders, Framing Contractors, Masonry Contractors

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

Structural Steel and Precast Concrete Contractors, Concrete Block and Brick Manufacturing, Fabricated Structural Metal Manufacturing, Furniture Merchant Wholesalers, Home Furnishing Merchant Wholesalers

Switchgear and Switchboard Apparatus Manufacturing, All Other Transportation Equipment Manufacturing, Furniture Merchant Wholesalers, Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers