Characteristics of Lung-Retained Coal Dusts Related to Morphological and Clinical Findings.
Dobreva-M; Burilkov-T; Kolev-K
NIOSH 1990 Nov:1553-1555
The amount and composition of lung retained dust in miners from the Pernik coal field were examined in a postmortem study. Possible changes in their lung morphology were examined. Lung changes and lung dust were examined for 23 miners without clinical or radiographic evidence of pneumoconiosis while they were still living. Great individual differences were detected. The dust quantity and its ashed content, as well as the quartz (14808607) content found in the lungs was significantly less than those reported by other authors for coal miners with manifested fibrosis changes. This findings could be due either to the lower dust concentration in the mines of the Pernik coal field, or to the lesser aggressiveness of the dust. Exposure to brown coal dust in the Pernik coal field, regardless of its continuance, did not result in significant changes of a fibrotic nature. The comparatively frequent morphological findings in the bronchial trees have no clinical correlate or are diagnosed as simple, nonobstructive dust related bronchitis.
Cytotoxic-effects; Lung-cells; Cell-damage; Dust-exposure; Coal-dust; Dust-inhalation; Respiratory-system-disorders; Tissue-disorders; Lung-tissue; Humans;
Asthma and Chronic Obstructive Pulmonary Disease; Disease and Injury; Respiratory-system-disorders;
Proceedings of the VIIth International Pneumoconioses Conference