The risk of lung cancer associated with exposed occupational group indicated linear relationship with cumulative exposure. Integrated Risk Information System (IRIS) reported that occupational exposure for 20 yr at levels of 0.1 fiber/ml and 10 fibers/ml (measured by Phase Contrast Method) corresponds to 2 to 200 excess risks respectively per 1,000 persons). Agency for Toxic Substances and Disease Registry has also presented linear doseresponse relationship model for computation of lung cancer
risk).
The objective of this study was to assess risk of young exposed workers to asbestos through determination of
cumulative dose.