SSMT

electronic geophysical survey equipment, namely, electric field sensors, magnetic field sensors, electronic data recorders, calibration equipment, transmitters and motor generators and battery power supplies, receivers, global positioning receivers with auxiliary timing and synchronization circuitry, data communications circuitry, and auxiliary computers and software for use therewith

geophysical exploration for the oil, gas, geothermal, mining, ground water exploration, and geophysical and geological research industries