 In Canada, lung cancer is the primary cause of cancer mortality above the next three culprits combined breast, colon and prostate cancer. Cigarette smoking is the most important risk factor in the development of lung cancer. Another population of particular interest in Alberta involves workers with occupational exposure to asbestos as asbestos and tobacco exposure results in a synergistic effect on lung cancer risk. Mesothelioma is a rare cancer of the lining of the lung with poor prognosis of which 80 of cases are believed to be related to asbestos exposure. 