Atoll Chemical Agent Disposal system. His expertise is in plant design, hazard evaluation, quantitative risk analyses, reliability assessment, and database development for risk and reliability. Mr. Gekler is a member of the American Institute of Chemical Engineers and the American Nuclear Society. He is the author or coauthor of numerous publications.


David A. Hoecke is currently president and CEO of Enercon Systems Inc. He graduated from the Cooper Union with a B.S.M.E. His expertise is in the fields of waste combustion, pyrolysis, heat transfer, and gas cleaning. In 1960 he began working for Midland-Ross Corporation as a project engineer, rising by 1972 to be its chief engineer for incineration. At that time he founded his own company, and he has since been responsible for the design and construction of numerous combustion systems, including solid waste incinerators, thermal oxidizers, heat recovery systems, and gas-to-air heat exchangers. Mr. Hoecke has considerable expertise in incineration technologies employed by the Army in its demilitarization of chemical weapons.


John R. Howell (NAE) is the Ernest Cockrell, Jr., Memorial Chair and Baker Hughes Incorporated Centennial Professor of Mechanical Engineering at the University of Texas in Austin. He recently served (2003-2007) as the director of the Advanced Manufacturing Center at the University of Texas. Professor Howell received his Ph.D. in engineering (1962), his M.S. in chemical engineering (1958), and his B.S. in chemical engineering (1958), all from Case Institute of Technology (now Case Western Reserve University) and joined the faculty of the University of Texas at Austin in 1978. He has received national and international recognition for his continuing research in radiative transfer, particularly for adapting Monte Carlo techniques to radiative transfer analysis. His recent research has centered on inverse analysis techniques applied to the design and control of thermal systems with significant radiation transfer. Professor Howell has served on the NRC Panel on Benchmarking the Research Competitiveness of the U.S. in Mechanical Engineering. He was elected a member of the NAE in 2005.


Nelline Kowbel is vice president and environmental program manager at Malcolm Pirnie Inc., a leading private environmental consulting firm. She is experienced in ordnance explosives and chemical weapons disposal program permitting and operational requirements. Ms. Kowbel has worked directly with regulatory compliance requirements for waste disposal operations, including chemical weapons disposal compliance at the Johnston Atoll, Tooele, Pine Bluff, Anniston, Pueblo, and Aberdeen sites. Ms. Kowbel has more than 25 years of experience in the environmental field and has been the environmental safety and health manager for a 1,500-person workforce. She has also managed a team of 80 contractor staff providing environmental and industrial health services, including environmental compliance and permitting for the Edwards Air Force Base Environmental Department. Ms. Kowbel is a registered professional engineer and a board certified environmental engineer. She holds a B.S. in civil engineering from the University of Kentucky


John E. Morral is a professor and former chair of the Department of Materials Science and Engineering at the Ohio State University and is an emeritus professor from the University of Connecticut. At the University of Connecticut he also served as head of the Department of Metallurgy and Materials Engineering. Dr Morral’s major research interest is diffusional kinetics with applications to high-temperature coatings, gas-solid reactions, and the heat treatment of alloys. He is former chair of the American Society for Metals (ASM) Heat Treating Society R&D Committee and helped draft ASM’s 1999 R&D Plan. In addition, he is deputy editor of the Journal of Phase Equilibria and Diffusion and former chair of the ASM Alloy Phase Diagram Committee, Atomic Transport Committee, and Thermodynamics and Phase Equilibria Committee. With these committees he has helped organize a dozen national and international conferences, including two international conferences for ASM on heat treating. Dr. Morral received B.S. and M.S. degrees in 1964 and 1965 from the Ohio State University and a Ph.D. in 1969 in metallurgy from the Massachusetts Institute of Technology.


Derrick K. Rollins serves as a professor of chemical engineering at Iowa State University, where he also holds a half-time appointment in the Departments of Statistics and Chemical & Biological Engineering. His areas of research and expertise are in predictive modeling and control of chemical processes, process dynamics and control, and advanced statistical modeling in chemical engineering. Dr. Rollins has received a number of technical and professional awards including the National Science Foundation Faculty Fellow Award, the Mentor Award of the American Association for the Advancement of Science, and selection as one of Iowa State University’s most outstanding faculty members. He holds a B.S. degree in chemical engineering from the University of Kansas, M.S. degrees in chemical engineering and statistics from Ohio State University, and a Ph.D. in chemical engineering from Ohio State University.



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