Mr. Mark has over 56 years of experience in mining exploration, geotechnical, and environmental geophysics, and is currently the head of Geotronics Consulting Inc. He began working in the mining industry in 1965 and graduated from the University of British Columbia in 1968 with a major in Geophysics. Mr. Mark became chief geophysicist of Geotronics in 1969 and acquired control of the company outright in 1972. Geotronics offers a wide variety of services, including seismic reflection and refraction, induced polarisation, various types of EM, gravity, magnetic, and soil sampling surveys (including MMI), as well as project management.