Abstract
Abstract In a study of the effectiveness of glove bags to control asbestos exposures to workers and contamination of the environment, a four-man crew removed asbestos in eight rooms in four schools. The workers had little prior experience using glove bags and received on-the-job training in proper techniques during the early stages of the study. Daily personal breathing zone (PBZ) samples on all workers and short-term (STBZ) and work-area samples for airborne asbestos were collected and analyzed by phase contrast microscopy (PCM). The asbestos fiber concentrations of 67 PBZ samples ranged from 0.002 to 1.41 fibers/cc when asbestos lagging was being removed; 67 percent were greater than 0.2 f/cc. During an accidental release, a short-term (15 minute) concentration of 9.3 f/cc was measured. Asbestos concentrations indicated by 77 area samples were slightly lower, ranging from 0.001 to 0.96 f/cc. For the part of the study that evaluated environmental contamination, various methodologies were used to determin...
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