Abstract

Several international regulatory bodies and researchers have identified employees in the municipal refuse and recycling industry as potentially at risk of noise induced hearing loss. Whilst materials recycling facilities have been subject to research regarding the health effects of hazardous exposures, the roadside recycling collection aspects of the industry has been identified as requiring further investigation. The requirement for characterization of such risk has been increased in the European Union by legislation that has led to increased rates of municipal recycling in the waste disposal industry. In particular, the introduction of glass recycling collection rounds over recent years, alongside long-established refuse collection activities, has given rise to possible further increased levels of industrial noise exposure, beyond that of refuse collection alone. This cross-sectional study describes hearing threshold categorization in 201 male full-time refuse collection workers, most of whom had many years of employment in municipal refuse collection, and all of whom, in the 3-4 years preceding the study, had commenced a work pattern of alternating weeks of municipal glass recycling collection and refuse collection. During this period there was no compulsory use of personal hearing protective equipment. No excess of hearing loss was found in this group, irrespective of years in refuse collection duties or when compared with those studied with additional responsibilities as a driver of refuse wagons (a task not considered to lead to excessive noise exposure). Further research into hearing loss in such employees is merited, given the short time period of exposure to noise from glass collection, but the possible benefit of undertaking detailed full shift personal noise exposure in this group is proposed.

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