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The relation of dust to "coal miners lung"

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McIntyreJH_1945redux.pdf (31.54Mb)
Date
1945
Author
McIntyre, J. H.
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Abstract
 
 
1. Fifty cases of Chronic Pulmonary disease in coal workers are described - twenty of them with X-Ray plates as illustrated. 2. some degree of Emphysema is almost universal in coal miners over 45 years of age. 3. Pulmonary Fibrosis is an incapacitating disease due to the inhalation of mixed dust and yet little may be found on clinical examination. 4. This condition is found chiefly in coal cutters and stoneworkers. 5. Pleurisy and Pneumonia frequently precede the onset of Pulmonary Fibrosis and predispose to it. 6. Pneumoconiosis of coal workers (dust reticulation) may be very easily missed unless a good radiological examination is carried out. 7. Pulmonary Tuberculosis is not of frequent occurrence among coal miners - rather less in fact than among the rest of the population, but in the older age groups of coal miners, one finds cases of Koniophthisis. 8. Koniophthisis is a condition in which dust reticulation and Tuberculous necrosis are found in association with a Silicotic Fibrosis. 9. Occasionally one finds an extraordinary condition in which Pulmonary Tuberculosis and Silicotic fibrosis form a 'cricket ball mass' which is necrotic in the centre and contains a tarry fluid. This may even rupture externally. 10. Miners Asthma which has been defunct for about 60 years shows signs of returning and modern methods of mechanical mining are believed to be responsible for this. 11. stone dust which is liberally scattered around the coal face before shot-firing, is not so innocuous in. the writer's opinion as was formerly believed - although it only contains 1% silica Dioxide. 12. There is no cardiac abnormality found on electroccardiographic examination in cases of chronic pulmonary disease of coal miners. 13. Frequent clinical and radiological examinations of coal miners should be carried out by industrial medical officers. Extractor fans, mist projectors etc should be used at the coal face to minimise the dust hazard and shot-firing should be done in the shift where the least number of men is working.
 
URI
http://hdl.handle.net/1842/35249
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  • Edinburgh Medical School thesis and dissertation collection

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