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A quarter century of industrial hygiene surveys in the fibrous glass industry.

The findings of industrial hygiene surveys in the fibrous glass industry made over a period of 24 years are presented. These were surveys made of the various substances used in the manufacture of fibrous glass. The amounts of such contaminants which might be encountered have not previously been published. What were probably the first measurements of the particle size of fibrous glass were made. Recommendations for the control of hazardous materials are given.