30 C.F.R. § 62.140 Dual hearing protection level.
Title 30 - Mineral Resources
If during any work shift a miner's noise exposure exceeds the dual hearing protection level, the mine operator must, in addition to the actions required for noise exposures that exceed the permissible exposure level, provide and ensure the concurrent use of both an ear plug and an ear muff type hearing protector. The following table sets out mine operator actions under MSHA's noise standard.
Title 30: Mineral Resources
PART 62—OCCUPATIONAL NOISE EXPOSURE
§ 62.140 Dual hearing protection level.
---------------------------------------------------------------------------------------------------------------- Provision Condition Action required by the mine operator----------------------------------------------------------------------------------------------------------------§ 62.120....................... Miner's noise exposure is None. less than the action level.§ 62.120....................... Miner's exposure equals Operator enrolls the miner in hearing or exceeds the action conservation program (HCP) which includes (1) level, but does not a system of monitoring, (2) voluntary, with exceed the permissible two exceptions, use of operator-provided exposure level (PEL). hearing protectors, (3) voluntary audiometric testing, (4) training, and (5) record keeping.§ 62.130....................... Miner's exposure exceeds Operator uses/continues to use all feasible the PEL. engineering and administrative controls to reduce exposure to PEL; enrolls the miner in a HCP including ensured use of operator-provided hearing protectors; posts administrative controls and provides copy to affected miner; must never permit a miner to be exposed to sound levels exceeding 115 dBA.§ 62.140....................... Miner's exposure exceeds Operator enrolls the miner in a HCP, continues the dual hearing to meet all the requirements of § 62.130, protection level. ensures concurrent use of earplug and earmuff.----------------------------------------------------------------------------------------------------------------
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