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January 15, 1927


JAMA. 1927;88(3):182-183. doi:10.1001/jama.1927.02680290044020

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Incidence of Silicosis in the Pottery Industry  The report of an important investigation on the incidence of silicosis in the pottery industry, instituted by the government, has just been published. Some interesting facts have been elicited by the investigation. Thus silicosis has been found, not only among those exposed to the inhalation of dry flint dust, but also in occupations such as the manufacture of earthenware, in which sand is used instead of flint; in flint-milling processes, in which the material is wet, and in processes of manipulating the ware in the clay state before firing. Uncombined silica in the form of flint or quartz is the important factor in causing serious respiratory disease in the industry. It appears that fibrosis of the lungs has been frequently diagnosed by medical examination earlier than silicosis has been found by roentgenologic examination in the same occupational group. Of 344 males and 224

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