Abstract
A study was undertaken to define the airborne concentrations of fibrous glass exposures of workers using prefabricated and other fibrous glass insulation materials. More than 100 fibrous glass products were examined and samples of airborne fibers were collected from various operations with such materials. Airborne concentrations ranged from 0.5 to 8 fibers/ml with mean fiber diameters from 2.2 to 8.4 micrometers. The mean diameter of fibers from the parent product were found not to be a reliable predictor of the mean diameter of the airborne fibers resulting from work with the products. The concentrations of airborne fibrous glass found in this study are not likely to be of long-term biological significance.