Abstract
The audiometric data of hard-rock miners exposed to hand-arm vibration from jack-leg hammers obtained in surveys two years apart has been analyzed. Both air condition and impedance audiometry was used. The workers were also examined to determine the presence and severity of vibration white finger. (VWF). The hearing levels for both ears were combined, and by multiple regression analysis it is shown that there is a significant association between hearing level (at 4kHz) and stage of VWF; hearing loss and age; and hearing loss and vibration exposure years. The hearing loss was significantly greater in miners with VWF who had less than 11 years vibration exposure.
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