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In order to protect soldiers from hearing loss, the U.S. Army adhered to the Military Standard (MIL-STD) 1474, which defined the maximum noise levels permitted to be produced by military systems. [ 8 ] [ 9 ] However, human volunteer studies demonstrated that the standard used since 1997, the MIL-STD-1474D, overestimated the hazard associated ...
The army deafness [nb 1] claims were a series of personal injury claims taken from 1992 to 2002 against the Irish Department of Defence by members of the Irish Defence Forces for noise-induced hearing loss resulting from exposure to loud noise during military operations and training.
Dual hearing protection refers to the use of earplugs under ear muffs. This type of hearing protection is particularly recommended for workers in the mining industry because they are exposed to extremely high noise levels, such as an 105 dBA TWA. [25] [26]} Fortunately, there is an option of adding electronic features to dual hearing protectors ...
3M has agreed to pay $6 billion to resolve roughly 300,000 lawsuits alleging that the manufacturing company supplied faulty combat earplugs to the military that resulted in significant injuries ...
An NYPD LRAD on top of a police humvee An LRAD operator wearing hearing protection LRAD on a navy ship. A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance.
The United States Environmental Protection Agency (EPA) mandates that hearing protection is rated and labeled. To be rated, hearing protection is tested under ANSI S3.19-1974 to provide a range of attenuation values at each frequency that can then be used to calculate a Noise Reduction Rating (NRR).
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