Alan H. Hall, M.D., is a board-certified Medical Toxicologist and is President and Chief Medical Toxicologist of Toxicology Consulting and Medical Translating Services, Inc., Laramie, Wyoming. He is also Clinical Assistant Professor at the Colorado School of Public Health, University of Colorado-Denver, Denver, Colorado. He was formerly Clinical Assistant Professor of Preventive Medicine and Biometrics and Assistant Professor of Pediatrics at the University of Colorado School of Medicine, and Research Assistant Professor in the Division of Medical Toxicology, Department of Emergency Medicine, Texas Tech University Health Sciences Center, El Paso, Texas. He received his undergraduate degree from Indiana University South Bend, South Bend, Indiana, from which university he has Division and University-wide Distinguished Alumnus awards. He received his Doctor of Medicine degree from the Indiana University School of Medicine, Indianapolis, Indiana. Dr. Hall has been in general practice, trained in Anesthesiology, and practiced Occupational and Environmental Medicine and Emergency Medicine. He was a board-certified Emergency Physician for 20 years. He is an honorarily retired United States Air Force Reserve Flight Surgeon. Dr. Hall was the inventor and for many years Director/Editor and Editor-in-Chief of the TOMES Plus (Toxicology, Occupational Medicine, and Environmental Series) databases at Micromedex, Inc., Denver and Englewood, Colorado. He has a particular interest in occupational and environmental chemical exposures, toxic gases, toxic terrorism preparedness and prevention, Advanced Hazardous Materials Life Support (he is an AHLS verified provider and instructor and a member of the Scientific Advisory Committee), cyanide poisoning/smoke inhalation and its antidotal treatment, and decontamination of skin/eye chemical splashes. Dr. Hall has been a consultant or peer reviewer for U.S. government agencies including DOL, DOE, ATSDR, NIH, and EPA, and was amember of a Toxicology Subcommittee of the National Research Council on Submarine Emergency Action Levels for toxic gases released during nuclear submarine disasters. He is a peer reviewer for several medical/scientific journals and textbook publishers. Dr. Hall has more than 90 scientific publications in peer-reviewed journals and textbooks, and lectures worldwide on various Medical Toxicology issues. He is also a professional translator of medical/scientific information from several languages into English. Dr. Hall is a member-at-large of the American Chemical Society Division of Chemical Health and Safety Executive Committee.