Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
213112 – Support Activities for Oil and Gas Operations
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
237120 – Oil and Gas Pipeline and Related Structures Construction
236220 – Commercial and Institutional Building Construction
238210 – Electrical Contractors and Other Wiring Installation Contractors
562112 – Hazardous Waste Collection
238220 – Plumbing, Heating, and Air-Conditioning Contractors
115310 – Support Activities for Forestry
221112 – Fossil Fuel Electric Power Generation