Pneumoconiosis in boiler scalers

Pneumoconiosis

“…In the iron mines of north‐west England the silica fraction of the dust seldom exceeds 20 per cent (Craw, 1947). Boiler scalers are exposed to a mixture of flue dust and boiler scale in which the silica content is less than 10 per cent (Dunner and others, 1952). Men employed in steel foundries are affected by a dust which is derived from siliceous sand, smoke and metal fume (McLaughlin, 1950).…”