Aim: Silicosis also known as potters rot is the most common occupational lung disease. People employed in occupations like sandblasting, surface drilling, tunneling, silica flour milling, ceramic making are predisposed to developing silicosis. We report a case of progressive massive fibrosis secondary to silicosis in a stone quarry worker. Case Report: A forty five year old stone quarry worker presented with chronic dry cough and breathlessness. His chest CT showed presence of multiple calcified mediastinal lymphnodes with irregular mass like areas. Based on the occupational exposure and radiographic images, a diagnosis of progressive massive fibrosis due to silicosis was made. Discussion: Pneumoconiosis is group of lung diseases related to occupational exposure to inhaled dust. The most common among pneumoconiosis is silicosis. Based on the amount and duration of exposure the clinical and radiological features of silicosis vary. Progressive massive fibrosis is a potentially fatal stage in complicated silicosis. In a majority of cases, a positive occupational history and radiological features are sufficient to make a diagnosis. Conclusion: There is no specific treatment for silicosis. Avoidance of further exposure, using personal protective measures, periodic medical checkup and strict legislations to protect employees and a system to check compliance should be ensued.