Protection must also be worn if the PEL is exceeded and controls cannot adequately reduce the exposure. MSHA defines an adequate selection of hearing protection as a choice between two plugs, and two muffs. No cost is to be charged to the miner for the hearing protection. In those cases where exposure exceeds 105 dB, dual protection, the wearing of plugs with a muff over them is required. Training needs to be provided to each miner within 30 days of program entry.
Training is to be repeated on an annual basis.
A written certificate including the date and time of training is to be maintained. This new standard is intended to better control the occurrence of noise-induced hearing loss in the mining industry. The preceding is an overview of the standard. Readers are encouraged to read the entire regulation and the support materials presented in its development. Wilson Blvd Arlington, VA 22203-1984.