541330  Engineering Services
541511 Custom Computer Programming Services
541512 Computer Systems Design Services
541513 Computer Facilities Management Services
541519 Other Computer Related Services
541611 Administration Management and General Management Consulting Services
541614 Process, Physical Distribution, and Logistics Consulting Services
541620 Environmental Consulting Services
541690 Other Scientific and Technical Consulting Services
541712* Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)
541930 Translation and Interpretation Services
541990 All Other Professional, Scientific, and Technical Services
561110 Office Administration Services
561210 Facilities Support Services
561612 Security Guards and Patrol Services
611430 Professional and Management Development Training
611630 Language Schools
611699 All Other Miscellaneous Schools and Instruction
611710 Educational Support Services

* Oak Grove’s Primary NAICS Cod