Final standards from the Department of Labor's Occupational Health and Safety Administration regarding permissible levels of exposure to asbestos, tremolite, anthophyilite, and actinolite. The report outlines the amount and duration of exposure to asbestos that is allowed by the federal government, and examines the health risks faced by workers who are exposed to these substances, which include lung cancer, asbestosis, pleural and peritoneal mesothelioma, and gastrointestinal cancer.