Dr. Stephen E. Ekwok is a lecturer of Physics and Applied Geophysics at the University of Calabar, Nigeria. He is also a consulting Geophysicist with specialty in environmental and geotechnical studies, groundwater, solid minerals and hydrocarbon explorations involving electrical, radiometric and potential field methods. At present, he is researching on exploratory mapping of Porphyry style mineralisation, polymetallic minerals, brine fields, determination of sediment thicknesses and assessment of crustal structures in southeastern Nigeria. These studies involve high resolution airborne and surface potential field data.