About the editors JACK T. GARRETT has worked in the fields of industrial hygiene and occupational health management for over 35 years, most recently as Industrial Hygiene/Information Services Director with the Department of Medicine and Environmental Health at the Monsanto Company, where he supervised 26 people in the disciplines of industrial hygiene, industrial hygiene chemistry, library science, computer operations, and ... Read moreadministration. He has been a contributor to five Wiley books on industrial hygiene and toxicology. Mr. Garrett earned his MS in chemistry at the University of Tennessee, Knoxville. LEWIS J. CRALLEY was formerly affiliated with the National Institute for Occupational Safety and Health, Public Health Service. He received his PhD in industrial hygiene from the University of Iowa. Past President of the American Industrial Hygiene Association, past Chairman of the American Conference of Industrial Hygienists, and past Chairman of the Occupational Health Section of the American Public Health Association, Dr. Cralley is also a Diplomate of the American Academy of Industrial Hygiene, an honorary member of the American Industrial Hygiene Association, and the recipient of the Meritorious Service Award from the Public Health Service, Department of Health, Education, and Welfare. LESTER V. CRALLEY was formerly Manager of Environmental Health Services for Aluminum Company of America. He received his PhD in industrial hygiene from the University of Iowa. Dr. Cralley was formerly President of the American Industrial Hygiene Association. He is also a Diplomate of the American Academy of Industrial Hygiene, an honorary member of the American Industrial Hygiene Association, and the recipient of the Cummings Memorial Award. Show Less