• 113110 – Timber Tract Operations
• 113310 – Logging
• 115310 – Support Activities for Forestry
• 236115 – New Single-Family Housing Construction (except Operative Builders)
• 236116 – New Multifamily Housing Construction (except Operative Builders)
• 236117 – New Housing Operative Builders
• 236118 – Residential Remodelers
• 236210 – Industrial Building Construction
• 236220 – Commercial and Institutional Building Construction
• 237110 – Water and Sewer Line and Related Structures Construction
• 237120 – Oil and Gas Pipeline and Related Structures Construction
• 237310 – Highway, Street, and Bridge Construction
• 237990 – Other Heavy and Civil Engineering Construction
• 238110 – Poured Concrete Foundation and Structure Contractors
• 238120 – Structural Steel and Precast Concrete Contractors
• 238130 – Framing Contractors
• 238160 – Roofing Contractors
• 238190 – Other Foundation, Structure, and Building Exterior Contractors
• 238210 – Electrical Contractors and Other Wiring Installation Contractors
• 238220 – Plumbing, Heating, and Air-Conditioning Contractors
• 238320 – Painting and Wall Covering Contractors
• 238330 – Flooring Contractors
• 238350 – Finish Carpentry Contractors
• 238910 – Site Preparation Contractors
• 238990 – All Other Specialty Trade Contractors
• 423310 – Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers
• 423990 – Other Miscellaneous Durable Goods Merchant Wholesalers
• 483111 – Deep Sea Freight Transportation
• 483113 – Coastal and Great Lakes Freight Transportation
• 532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
• 541330 – Engineering Services
• 541620 – Consulting Services
• 561730 – Landscaping Services
• 562211 – Hazardous Waste Treatment and Disposal
• 562910 – Remediation Services
• 562998 – All Other Miscellaneous Waste Management