Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Oil and Gas Pipeline and Related Structures Construction, Power and Communication Line and Related Structures Construction

Engineering Services, Building Inspection Services, Geophysical Surveying and Mapping Services, Surveying and Mapping (except Geophysical) Services, Testing Laboratories

Engineering Services, Building Inspection Services, Testing Laboratories, Administrative Management and General Management Consulting Services, Environmental Consulting Services

Optical Instrument and Lens Manufacturing, Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufactur, Software Publishers, Testing Laboratories, Custom Computer Programming Services

Engineering Services, Testing Laboratories, Other Specialized Design Services

Industrial Building Construction, Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals), Other Building Material Dealers

Testing Laboratories

Electrical Contractors, Testing Laboratories, All Other Professional, Scientific, and Technical Services, Other Electronic and Precision Equipment Repair and Maintenance

Engineering Services, Building Inspection Services, Testing Laboratories

Testing Laboratories

Architectural Services, Landscape Architectural Services, Engineering Services, Drafting Services, Building Inspection Services

SAIC

Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Power and Communication Line and Related Structures Construction, Highway, Street, and Bridge Construction

Architectural Services, Landscape Architectural Services, Engineering Services, Drafting Services, Building Inspection Services

Architectural Services, Engineering Services, Testing Laboratories, Environmental Consulting Services, Facilities Support Services

Support Activities for Metal Mining, Testing Laboratories, Environmental Consulting Services, Other Scientific and Technical Consulting Services

BRANCH

Support Activities for Oil and Gas Operations, Support Activities for Coal Mining, Support Activities for Metal Mining, Hydroelectric Power Generation, Electric Power Distribution

Testing Laboratories

Water Supply and Irrigation Systems, Water and Sewer Line and Related Structures Construction, Oil and Gas Pipeline and Related Structures Construction, Power and Communication Line and Related Structures Construction, Electrical Contractors

Engineering Services, Surveying and Mapping (except Geophysical) Services, Testing Laboratories

Telephone Apparatus Manufacturing, Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals, Testing Laboratories, Research and Development in the Physical, Engineering, and Life Sciences

Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing, All Other Miscellaneous Manufacturing, All Other Information Services, Engineering Services, Testing Laboratories

Testing Laboratories

Gold Ore Mining, All Other Metal Ore Mining, Construction Sand and Gravel Mining, Other Chemical and Fertilizer Mineral Mining, New Single-Family Housing Construction (except Operative Builders)