has job zone occupation holder with job zone 4 environmental science or geoscience technician geological technician, except hydrologic technician 4 https://www.bls.gov/soc/ 19-4043.00 Oliver He Sam Smith Geological Technicians, Except Hydrologic Technicians Assist scientists or engineers in the use of electronic, sonic, or nuclear measuring instruments in laboratory, exploration, and production activities to obtain data indicating resources such as metallic ore, minerals, gas, coal, or petroleum. Analyze mud and drill cuttings. Chart pressure, temperature, and other characteristics of wells or bore holes.