R. Scott Stricoff is Vice President of Safety and Environmental Health for Arthur D. Little, Inc. as well as a Certified Industrial Hygienist and Certified Safety Professional. He earned a bachelor's degree in chemical engineering from MIT and an MBA from Northeastern University. Mr. Stricoff is the author and coauthor of numerous publications in the field of occupational health and safety.

Douglas B. Walters, PhD, is the Head of Laboratory Health and Safety in the National Toxicology Program of the National Institute of Environmental Health Sciences. Dr. Walters earned his doctorate in chemistry from the University of Georgia and is a Certified Safety Professional. He is the author of Health and Safety for Toxicity Testing and Safe Handling of Chemical Carcinogens, as well as numerous health- and safety-related publications.