Dr. Charles F. Weber has over 40 years experience in nuclear chemical engineering and applied mathematics. He received a B.A. (Mathematics, 1975), M.S. (Mathematics, 1979), and Ph.D. (Chemical Engineering, 1998), all from the University of Tennessee. Over the past ten years, he has focused mainly on modeling and simulation related to nonproliferation issues, including Pu production, nuclear forensics, and U enrichment. Current work includes novel statistical classification methods for evaluating environmental samples and process modeling in support of both enrichment plants and reprocessing plants. He has expertise in many areas of applied mathematics, including numerical analysis, optimization, scientific programming, statistics, and inverse problems. He has applied these skills in various areas of nuclear chemistry and nuclear chemical engineering, such as inverse heat conduction, parameter estimation in chemical kinetics and thermodynamics, inverse depletion/decay modeling, generalized modeling of enrichment cascades, and fission product chemistry and transport. In addition, he has contributed to several studies of fallout transport during a hypothetical urban nuclear detonation, focusing on the chemical and physical behavior of fallout particles. Dr. Weber has been the Principal Investigator on a number of projects for NNSA Defense Nuclear Nonproliferation R&D, the Department of Defense, Department of Energy, the Nuclear Regulatory Commission, and the International Atomic Energy Agency.