Primary NAICS Codes

Primary NAICS Codes

213112: Support Activities for Oil and Gas Operations

236210: Industrial Building Construction

236220: Commercial and Institutional Building Construction

237120: Oil and Gas Pipeline and Related Structures Construction

541330: Engineering Services

541519: Other Computer Related Services

541611: Administrative Management and General Management Consulting Services

541620:  Environmental Consulting Services

541690: Other Scientific and Technical Consulting Services (MAIN)

541990: All Other Professional, Scientific, and Technical Services

561110: Office Administrative Services

561210: Facilities Support Services

561320: Temporary Help Services

561612: Security Guards and Patrol Services

561621: Security Systems Services (except Locksmiths)

562211: Hazardous Waste Treatment and Disposal

562212: Solid Waste Landfill

562910: Remediation Services

611430: Professional and Management Development Training