upper lobe of the lung – especially on the right, and its common occurrence in taller individuals. Diagnosis Treatment Incidence Progressive massive fibrosis increased during the period 1970–2016 among coal miners in central Appalachia who filed for black lung benefits. References Occupational Lung Diseases, 3rd Edition, Morgan and Seaton https://web.archive.org/web/20060223051633/http://pim.medicine.dal.ca/il1.htm Lung disorders Occupational diseases