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3/1/1975 - Peer reviewed journal articlesThe theoretical study of UHF radio communication in coal mines, with particular reference to the rate of loss of signal strength along a tunnel, and from one tunnel to another around a corner is the concern of this paper. This work was part of an invest...
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5/9/2019 - Training materialsSection 3 of the OMSHR advanced tutorial on wireless communication and electronic tracking covering electronic tracking systems performance.
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5/9/2019 - Training materialsSection 5 of the OMSHR advanced tutorial on wireless commnication and elctronic tracking covering CT system safety.
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5/9/2019 - Training materialsSection 2 of the OMSHR advanced tutorial on wireless communication and electronic tracking covering communication system performance.
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5/9/2019 - Training materialsAppendix B of the OMSHR advanced tutorial on wireless communication and electronic tracking covering basic equations.
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12/1/2017 - Peer reviewed journal articlesAn article presenting the results of a feasibility study on Industrial Internet of Things (IIoT) applications in underground coal mines based on existing communication and tracking infrastructure.
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7/19/2016 - Contracts and cooperative agreementsA contract to ensure that the limited useful spectrum is used efficiently, health and safety hazards are not introduced, and new systems do not interfere with each other or with older systems already in place.
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7/19/2016 - Contracts and cooperative agreementsA contract to modify medium frequency radio systems to improve refuge chamber situational awareness in an underground coal mine.
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7/19/2016 - Contracts and cooperative agreementsA contract to develop and demo a two-way, through-the-earth communication system for mines that applies state-of-the-art communications technologies to overcome subterranean wireless communication challenges while meeting industrial safety standards.
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7/19/2016 - Contracts and cooperative agreementsA contract to develop and test a Media Converter Device (MCD) that allows wireless handheld radios to communicate with leaky feeder communication systems. This will greatly improve voice quality and underground communications coverage in cross-cuts.
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Content source: National Institute for Occupational Safety and Health, Mining Program