Audiometric study among carpenters

The aim of this study was to investigate the hearing threshold among a group of 60 carpenters, exposed to saw machine noise and impulse noise of nail hammering. The study has been carried out at ATICO Factory for furniture at Abou-Zaabal. It has been found that the maximum impairment of hearing of the exposed workers was at the 6 KHz. No statistcally significant difference could be found between the hearing threshold of the exposed workers and the control group. However, there ia a considerable permanent shift in their hearing threshold. This may be due to the short duration of the exposure [5 years], the intermittent nature of the exposure [about 20 minutes per working hour], or relatively not high level of noise