Erle C. Donaldson is an independent consultant and managing editor of the Journal of Petroleum Science and Engineering. He was elected to the International Hall of Fame for Science in 1993. He has received a distinguished service award from the Republic of Honduras and other honors from the U.S. Department of Energy, the National Petroleum Engineering Honor Society, and the University of Oklahoma. Dr. Donaldson has written, co-authored, and served as editor on numerous articles and books.Dr. Nasrin Begum is an environmental health scientist who has evaluated environmenal risks (human health and ecological) associated with various chemicals including chemicals related to the petroleum industry. She has over 25 years of experience in toxicological and risk evaluations and has published several papers in refereed journals. She was involved in the analysis of microbial activities for improving petroleum recovery and also for decontaminating petroleum and explosive wastes. She has a Ph.D. in Environmental Health from Colorado State University and a M.S. in Plant Pathology for Oklahoma State University. She is currently working at Tetrahedron, Inc.