For more than 30 years, Zonge Engineering and Research Organization Inc. has been one of the leaders in the development and application of geophysical methods to subsurface imaging in the world. Starting with minerals exploration, it has since expanded into hydrological, hydrocarbon, environmental, engineering, and unexploded ordnance applications and extended its capabilities to include potential field and seismic surveys. Located in Tucson, Ariz., Zonge Engineering and Research Organization Inc. integrate research and development programs, equipment manufacturing and field services. The company offers a wide range of electrical/electromagnetic geophysical equipment, such as receivers, transmitters, generators, accessories and antennas.