Charles F. Kluth received his B.A. in Business Administration in 1971, from Augustana College in Rock Island, Illinois; he switched to geology in graduate school and received a B.S. (cum laude) and M.S. in geology from Northern Arizona University in Flagstaff. Kluth worked for Chevron upon completion of his M.S. before taking a leave of absence to return to the University of Arizona to work on his Ph.D. He returned to Chevron in 1980, and moved from their Denver office to San Ramon, California, where he worked on exploration in Europe – mostly in the central Apennines and Southern Alps of Italy, and later served as head of ChevronTexaco’s structural geology schools, and exploration consultant within ChevronTexaco all over the world. Since 2000, Kluth has been a consultant in the name of Kluth & Associates in Littleton, Colorado. He also holds the position of Distinguished Scientist at Colorado School of Mines. His current interests include work on structural geometric tools for the quantitative prediction of hydrocarbon trap geometry and the quantitative evaluation of trap risk in exploration, as well as teaching structural geology field and short courses.