Mr Berkman is one of the the seminal persons influencing the development of magnetotellurics and high definition 3D seismic in the 1970's. Many advances in gravity and magnetic data acquisition and interpretations have been pioneered by Mr. Berkman and our associates. We remain one of the cutting edge providers of and interpreters of data. We also are one of the few independent seismic contractors providing extremely high definition 2D seismic data acquisition and evaluation. Our associates in magnetic and gravity data gathering also provide the full spectrum of high definition magnetic and gravity services for the client.