ROGER L. BRAUER, PhD, is an inductee of the Safety and Health Hall of Fame International and a Fellow of the American Society of Safety Engineers. He has been a professor of safety engineering for twenty years at the University of Illinois at Urbana-Champaign. Dr. Brauer is also a former vice president of professional development for the American Society of Safety Engineers, and author of six books and numerous papers. He was principal investigator at the U.S. Army Construction Engineering Research Laboratory in Champaign, Illinois, for twenty years.