Abstract
In Poland, as in other industrialized countries, noise is a serious problem of occupational medicine. On the basis of the Polish state law, managers of noisy plants are obliged to implement the hearing conservation program. The program consists of noise measurement, noise reduction by technical means, periodical hearing examination of workers exposed to noise, use of hearing protectors, and training of workers. Nevertheless, 30% of all new cases of occupational diseases recognized every year in Poland are the noise-induced hearing loss (NIHL). Most cases of NIHL are recognized in the mining and metallurgical industries. One of the projects previously carried out analyzed the efficiency of medical prophylaxis [J. Grzesik and K. Pawlas, Ochrona Zdrowia Publicznego 96, 516–523 (1985), in Polish]. Hearing conservation programs performed in chosen plants (mines and foundries) were evaluated. Each point of the hearing conservation program was investigated on the basis of the data collected in the plants. Hearing protector devices used by workers were examined, too. The researchers discovered weak points in the activities of health services and occupational hygiene departments as well as of managers and workers.
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