I.J. Won is currently president of Geophex Ltd, (605 Mercury St., Raleigh, NC 27603), an independent environmental and geological consulting firm. He obtained a B.S. degree (1967) in mining and petroleum engineering from Seoul National University in Korea, and an M.S. (1971) and Ph.D. (1973) in geophysics from Columbia University in New York. From 1976 to 1989, he was professor of geophysics at North Carolina State University in Raleigh. He has published more than 40 research and review articles in refereed technical journals and books. Won founded Geophex in 1983 and specializes in exploration geophysics for searching minerals, oil, and gas deposits, as well as recently in geophysical applications to geotechnical and environmental problems.