Chris Weber owns and operates the training and consulting company Dr. Hazmat, Inc. His experience includes serving as a hazmat technician and Deputy Director of the Washtenaw County Hazardous Materials Response Team for many years. He has been a firefighter for over 20 years and is an adjunct instructor with the Michigan State Police Emergency Management and Homeland Security Training Center. Richard Dufek -- now retired from the Carmel Indiana Fire Department, held the rank of Battalion Chief, in charge of the department's 30 person hazardous materials response team. Mr. Dufek is the author of the "Basic Chemistry for Emergency Responders". He has worked with a Department of Homeland Security contractor in re-writing the Emergency Response to Terrorism; Basic Concepts class.

Richard J. Lewis, Sr. of Lewis Information Systems, Inc. is a chemist with extensive experience in air and industrial pollution measurement, industrial hygiene research, and toxicological and chemical information systems. Formerly manager of Information Systems for the National Institute for Occupational Health and Safety, Lewis is the author of a number of widely used references, including: Sax's Dangerous Properties of Industrial Materials (8th - 11th Editions), Rapid Guide to Hazardous Chemicals in the Workplace (2nd and 3rd Editions), Reproductively Active Chemicals , and Hawley's Condensed Chemical Dictionary (14th and 15th Editions) -- all published by John Wiley and Sons.