Abstract: Objective To investigate the current status of occupational hazards in 13 coal mines of a certain group company,analyze the hazards in key positions,and propose prevention and control measures. Methods Using methods such as on-site investigation,on-site sampling,and data analysis,a retrospective survey was conducted on 13 coal mines under a certain group company to investigate the occupational disease hazards from 2020 to 2022. The respiratory dust and noise exposure of the main positions were detected,and the occupational health monitoring situation was analyzed. Results The main occupational hazards in the coal mines were dust and noise. 549 respiratory dust samples and 231 noise monitoring points exceeded the standard,with exceedance rates of 17.6% and 42.4%,respectively. The dust-exceeding positions were coal miners and tunnel excavators,while the noise-exceeding positions were tunnel excavators and drillers. The incidence of pneumoconiosis in the corporation hadbeen on a downward trend since 2018,with 92 cases in 2018,61 cases in 2019,8 cases in 2020,and only 1 new case in 2023. Due to the strengthening of noise-induced hearing loss diagnosis in recent years,there had been an upward trend in noise-induced hearing loss,with 29 cases reported in 2022. Conclusion The corporation should strengthen occupational health management,promote the classification and grading management of occupational disease hazards in the workplace,strengthen the control of dust and noise hazards for coal miners and excavation workers,and effectively carry out occupational health monitoring.

Key words: Coal minesenterprises, Key Positions, Dust, Noise, Occupational disease, Current status