Lung disease seen in Coal and Rock mine rs?

-Anthracosis is occupational disease seen in coal miners. -studies indicate that there are two general phases in coal miners pneumoconiosis; simple pneumoconiosis is associated with ventilatory impairment. second phase is characterized by progressive massive fibrosis that cause severe respiratory disability and premature death. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:806 <\p>