Abstract
A methodology for sampling dust levels in cotton gins with vertical elutriators was developed and used successfully in 12 cotton gins located in the San Joaquin Valley of California during the 1978 ginning season in coordination with an independent medical survey of respiratory functions in cotton gin workers to determine the response of cotton-gin workers to cotton dust. The USDA had complete control over dust-survey sites and schedules. The effects of variables such as weather, cotton fires, processing interruptions, and the structural variations of the cotton gins, themselves, on the sampling program are discussed. Average interior dust concentration was 0.74 mg/m3, with a range of 0.38 to 1.41 mg/m3.
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