[Application of four risk assessment methods to risk assessment of noise-induced hearing loss in metal mining enterprises].

The overall occupational health risk level of noise-induced hearing loss in metal mining enterprises in three provinces was low, and the highest risk positions were excavation workers and mill operators in 2019-2021. The classification of occupational exposure to noise and the guidelines for risk management of occupational noise hazard might overestimate the noise hazard risk when workers were equipped personal protection well. ICMM risk rating table method can distinguish the risk levels of different positions effectively and identify the high-risk hearing loss position as early warning. Occupational hazard risk index method was comprehensive and practical.