[Papers on dusty trades] / by F.L. Hoffman.

  • Frederick Ludwig Hoffman
Date:
1908-1919
Catalogue details

Licence: In copyright

Credit: [Papers on dusty trades] / by F.L. Hoffman. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    34 when out of every 100 deaths from all causes 60 were from con- sumption, against a normal expected proportion of 31.3. The analy- sis of the consumption mortality of marble-cutters in detail is set forth in the table below: PROPORTIONATE MORTALITY FROM CONSUMPTION AMONG MARBI.E CUT- TERS, 1897 TO 1906, COMPARED WITH THAT OF ALL MALES IN THE REGIS- TRATION AREA OF THE UNITED STATES, 1900 TO 1906, BY AGE GROUPS. [FiKures for marble-cutters from experience of an industrial insurance company ; figures for males in registration area computed from mortality statistics of the United States census.] Age at death. Deaths of marble cut- ters, 1897 to 1906, due to— All causes. Consump- tion. Per cent of deaths due to consumption among— Marble- cutters. Males in registration area, 1900 to 1900. 15 to 24 years... 25 to34 years... 35 to 44 years... 45 to 54 years... 55 to 64 years... 65 years or over Total 3 30 40 46 50 31 15 16 16 7 2 50.0 40.0 34.8 14.0 6.5 27.8 31.3 23.6 15.0 8.1 2.7 200 56 28.0 14.8 The preceding observations and statistical data, derived from indus- trial insurance mortality experience, confirm the conclusion that the degree of dust exposure in this occupation is about the same as among stoneworkers generally and that the degree of consumption frequency among marble cutters is materially above the average, but decidedly so at ages 25 to 34. THE GLASS INDUSTRY. The glass industry in the United States gives employment to some 50,000 wage-earners, of whom about 10 per cent are children under 16 years of age. The industry is a varied one, including among others the manufacture of blown and pressed ware, of window glass and plate glass, and finally of so-called crystal or cut glass, which for the present purpose is considered as a separate industry. The labor division of the trade includes numerous and well-defined occupations, each of which is subject to more or less injurious circumstances, but of these the handling of materials and the mixing are the most liable to the risk of continuous inhalation of mineral dust. The most im- portant employment is that of the glass blower, but there are few accurate statistics which separate this employment from the industry as a whole. For the present purpose, however, it has seemed best, as tar as practicable, to consider the mortality of glass blowers by itself, although the medical observations subsequently to be quoted refer more or less to glass workers as a class. Changes in manufacturing processes and the introduction of labor-saving machinery have resulted 63675—No. 79—09 5
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