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A NIOSH Technology News report on technology to provide a two-way communications system to improve miners' ability to communicate from underground to surface.
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Suggested citation
NIOSH [2012]. Technology News 551 - Through-the-earth, post-accident communications-- An emerging technology. Pittsburgh, PA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2013-105.
