Ten years' experience with the Coal Workers' Health Surveillance Program, 1970-1981.
D000328:Adult; D003032:Coal Mining; D006801:Humans; D008875:Middle Aged; D009314:National Institute for Occupational Safety and Health, U.S.; D011009:Pneumoconiosis / Q000000981:diagnostic imaging / Q000453:epidemiology*; D011159:Population Surveillance; D011859:Radiography; D014481:United States