Alan L. Calnan is a professor of law at Southwestern University in Los Angeles, California. Previously, he was an instructor of legal writing at Villanova University, a casualty litigation associate in Philadelphia, and a law clerk for Judge Donald E. Wieand of the Superior Court of Pennsylvania. His research interests focus on tort law, including the use of risk exposure to guide award recovery, differences in demands for corrective justice between corporations and individuals, the convergence of contract and tort law, and development of a uniform theory of civil liability. He is a member of the Pennsylvania State Bar. Mr. Calnan earned a B.A. in history from Kutztown University of Pennsylvania and a J.D. from Syracuse University.

Tung Ho Chen is a research chemist at the U.S. Army Armament Research, Development and Engineering Center at Picatinny Arsenal. His research interests include physical and analytical chemistry of energetic and related materials, multicomponent analysis, and analysis of explosion residues. Dr. Chen is a member of the International Civil Aviation Organization's Ad Hoc Group of Specialists on Detection of Explosives. He is recognized for his work on tagging of plastic explosives. He earned a Ph.D. in chemistry from the University of Louisville.

Herbert S. Eleuterio is a visiting professor in the engineering department at the National University of Singapore. Previously, he held a number of research and management positions at DuPont Company, including director of new technologies and technical director of the Atomic Energy Division. His research expertise includes reaction mechanisms, stereochemistry, polymer chemistry, and nuclear chemistry. He has been the recipient of several honors and awards, including the 1995 National Science and Technology Medal of Singapore and the 1995 Lavoisier Medal for Technical Achievement. He received his Ph.D. in organic chemistry from Michigan State University.

William M. Haynes is director of the Analytical Science Center at the Monsanto Company. He previously held a series of research and research management positions at Monsanto and taught at Southeast Missouri State College. His research interests are in analytical chemistry, including polarographic analysis, ion selective electrodes, and industrial hygiene sampling and analysis. He received his Ph.D. in analytical chemistry from the Oklahoma State University.

Robert. B. Hopler operates Powderman Consulting, Inc. in Oxford, Maryland. He has 35 years of technical and managerial experience in the explosives field with Dyno Nobel, Inc., Ireco, Inc., and Hercules Powder Company. He also served as the Dyno contact with the Federal Bureau of Investigation Explosives Group, Federal Aviation Administration explosives personnel, and the Bureau of Alcohol, Tobacco, and Firearms laboratories. His areas of expertise include ammonium nitrate, packaged explosives, and detonators. He has published numerous papers, taught courses, and made presentations on explosives and detonators. He is a member of the American Institute of Mining Engineers and of the International Association of Bomb Technicians and Investigators, and is the former secretary of the International Society of Explosive Engineers. He received a B.S. and M.S.

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