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May 28, 1938

ATMOSPHERIC CONTAMINATION

JAMA. 1938;110(22):1839. doi:10.1001/jama.1938.02790220041015
Abstract

The study of air pollution in our large cities has been enormously stimulated. Every one is aware of the smoke pall which hangs over us; many are disturbed as to possible deleterious effects on our health. The investigations of the Mellon Institute, of Industrial Research from 1911 to 1914 disclosed that the economic loss in the Pittsburgh area alone was $10,000,000 annually. This cost was principally due to waste fuel, increased cleaning bills, ruined merchandise and corrosion of buildings. The problem is not, however, confined to cities of the United States. The recent study by Barrett1 on atmospheric pollution in Toronto employed the methods developed by the committee for investigation of such fouling in Great Britain. Deposited impurity was measured at three locations within and at one location outside the city. Total solids deposited at the three locations within the city averaged 341, 358 and 610 tons per square

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