Document EpkgGjb6o16bbbzGz3yvo9oV

it contains fiber, since any dust in sufficient quantity s potentially hazardous. Two cjood reference works on designing dust control systems arc: 1. American National Standards Institute, ANSI Z9.2-1972. 2.. "Industrial Ventilation" by the American Conference of Government Industrial Hygienists. MEDICAL REQUIREMENTS Present medical standards require that "the employer shall provide initial and annual compre- hensive medical examinations to each of his employees engaged in occupations exposed to air borne concentrations of asbestos fiber." NIOSH (National Institute for Occupational Safety and Health, a Division of the Department of Health, Education and Welfare) has recommended in its criteria for occupational exposure to asbes tos, that for the purpose of medical surveillance, "the term exposed to asbestos will be interpreted as referring to time-weighted average exposures above one fiber per cc or peak exposures above five fibers per cc." The intent of the NIOSH recommendation was to eliminate the need for medical examina tions when an employee's exposure was below one-half the TLV. LABELING Present standards require that: "Caution labels shall be affixed to all products containing asbestos fibers, or to their containers, except that no label is required where asbestos fibers have been modified by a bonding agent, coating, binder or other material, so that during any reasonably foreseeable use, no airborne concentrations of asbestos fibers in excess of the prescribed limits will be released." The required wording of the label is: CAUTION Contains Asbestos Fibers Avoid Creating Dust Breathing Asbestos Dust May Cause Serious Bodily Harm PRODUCED JM -83