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A survey of lung cancer mortality by county in the United States, 1950-1969, revealed excessive rates among males in counties where paper, chemical, petroleum, and transportation industries are located. The industrial correlations were not attributed to urbanization, socioeconomic factors, or other manufacturing operations, and may account for part of the high risk of lung cancer previously reported in Southern US coastal counties.
Blot et al. (Tue,) studied this question.