The R.T. Clark Companies, Inc. was founded in 1983 in response to a need in the geophysical business for a place to dispose of worn and excess equipment. Since then, we've established our own line of new products, sensors, energy sources, battery enclosures, and custom-built seismic equipment. We have supported several seismic, engineering, and environmental contractors, oil corporations, geophysical firms, universities, and research organizations in the acquisition and sale of new and used geophysical and seismic equipment.