Possible NAICS Codes
237120 – Oil and Gas Pipeline and Related Structures Construction
236220 – Commercial and Institutional Building Construction
238990 – All Other Specialty Trade Contractors
237990 – Other Heavy and Civil Engineering Construction
561210 – Facilities Support Services
237110 – Water and Sewer Line and Related Structures Construction
921190 – Other General Government Support
324110 – Petroleum Refineries
238220 – Plumbing, Heating, and Air-Conditioning Contractors