The study included 318 asbestos exposed workers. The aim was to investigate the symptomatology and clinical findings over an average period of ten years. We took in cosideration quantitative data and analyzed them by statistical methodology of univariate and multivariate data analysis and chi2-test. Chest radiography, clinical and functional findings were used as a diagnostic tool. The most common finding was dyspnea, then cough and chest pain. Clinical symptoms were more common in workers exposed to crysotile asbestos than in those exposed to crocidolite asbestos. There is strong evidence for association between the symptoms and the duration of asbestos exposure. The symptoms were not specific for asbestosis. A significant positive correlation was found between physical examination and duration of asbestos exposure. Basal rales and pleural rub were recorded in 72% of exposed workers.