The manufactured in "cotto" is typical of Chianti Fiorentino with about 400 employees. In 2005. the UF PISLL encountered an exposure to silica more than TLV, particularly for some tasks; were prescribed interventions of prevention and was undertaken an investigation of the occupational health status with occupational health physician. We observed 227 workers, 208 males and 19 females, with average age of 43 years and average age working of 15 years. The habit of smoking tobacco was higher than for the general population. The assessment of exposure to silica has been detected for 59 workers (mean 0.05 mg / mc); at pulmonary function testing resulted: 10 with airway obstruction and 4 airflow limitation; by 140 chest X - ray acquired 1 was interstitial pulmonary disease and 1 was bronchopneumonia. Among the diseases not related to exposure to silica, emerging 42 cases of low back pain, 28 hearing loss, 7 with hypertension. Non uniformity in health surveillance and diagnostic criteria highlights the need to cooperate between occupational doctor in public prevention and control service and qualified occupational doctor to ensure a standard of quality in the prevention of disease in exposed to silica.