Title : Occupational noise-Induced hearing loss among underground coal miners in south africa: Risk factors and prevention strategies
Abstract:
Background: Occupational noise-induced hearing loss (ONIHL) remains the third most commonly reported occupational disease in South Africa's mining sector. Despite existing regulations mandating exposure limits of 85 dBA over 8-hour periods and comprehensive hearing conservation programmes, ONIHL continues to affect underground coal miners at alarming rates.
Objective: This study identified risk factors contributing to ONIHL among underground coal miners in a Free State mine and evaluated the effectiveness of current prevention strategies.
Methods: A cross-sectional analytical study was conducted among 94 underground coal miners using a structured self-administered questionnaire in English and Sesotho. Participants were drawn from five occupational categories: general labourers, roof bolt operators, mechanical fitters, safety officers, and supervisors. Chi-square tests and binary logistic regression analysis assessed associations between demographic characteristics, workplace activities, occupational health and safety knowledge, and hearing health outcomes.