CHRISTOPHER BUEHLER, PhD, P.E., is a senior managing engineer in the Thermal Sciences practice at Exponent, Inc. (420 Lexington Ave., Suite 1740, New York, NY 10170; Email: buehler@exponent.com). He specializes in the application of chemical engineering principles to the scientific investigation and analyses of problems involving the production, processing, storage, transport, and use of both hazardous and nonhazardous materials such as chemicals, flammable and toxic gases, petroleum, and various wastes. His work includes investigation of fires, explosions, and process upsets; characterization of atmospheric releases and spills; evaluation of the stability, compatibility, and hazard potential of chemicals and chemical mixtures; assessment of facility design, operation, and mechanical integrity practices with respect to their safety, health, and environmental impacts; and process hazards analyses (PHAs). He holds a PhD and master鈥檚 degree from Purdue Univ. and a bachelor鈥檚 degree from Villanova Univ., all in chemical engineering. He is also a licensed professional engineer in the states of Colorado, Louisiana, Pennsylvania, Texas, and Wyoming.