Asbestos Content of Dust Encountered in Brake Maintenance and Repair

irregular or nodular interstitial opacities of limited extent and intensity on their films. Silica or asbestos exposure had occurred in 220% of the work force examined. Such exposures had occurred in various job categories in the titanium facility as well as in prior occupations. Eight of the 26 workers with abnormal X-rays had had silica or asbestos exposure. No clear pattern of restrictive disease in relation to X-ray findings could be seen.

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