Toxicity Tests for Respirable Fibers

SAN DIEGO - The USEPA, Fed-OSHA, the National Institute for Occupational Safety and Health and the National Institute of Environmental Health Sciences, at a three-day workshop here May 8-10, considered chronic inhalation toxicity and carcinogenicity testing of respirable fibrous particles. The issue is potential development of respiratory diseases, including cancer, from chronic inhalation exposure. "Many of these fibers have wide industrial and commercial applications, but there is limited, inconclu