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Results 21 - 30 of 42
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9/17/2012 - Contracts and cooperative agreementsA contract to design, build, and demonstrate a battery-powered, through-the-earth wireless voice communication system for overburdens of up to 600 feet.
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9/17/2012 - Contracts and cooperative agreementsA contract to design, adapt, construct, install, and evaluate a wireless mesh communication network in an underground coal mine.
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9/1/2012 - Peer reviewed journal articlesNational Institute for Occupational Safety and Health research aimed at demonstrating the feasibility of through-the-earth (TTE) wireless communication in mining.
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12/1/2011 - Technology NewsA surface network system using off-the-shelf components successfully established strategic communications links in a limited mine-simulated environment. The system could be expanded to link other communication devices and a command center.
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10/1/2011 - Technology NewsThis technology is used to map communications and tracking coverage in underground mines. It is important to know coverage of these systems during a mine emergency.
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4/1/2007 - Conference papersThis paper describes a seismic monitoring network that has recently been installed in the North Fork Valley coal mining region of western Colorado as part of a NIOSH mine safety technology transfer project with two longwall coal mine operators.
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1/1/1983 - Reports of InvestigationsAn essential element of the USBM electromagnetic location and communication system for trapped miners is knowledge of the surface and above-surface electromagnetic fields created by an underground transmitter.
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1/1/1982 - Reports of InvestigationsThe Bureau of Mines (NIOSH Mining) has conducted field studies in coal mines throughout the United States to determine the effectiveness of electromagnetic techniques in locating miners trapped underground following a mine accident.
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12/1/1980 - Contract reports, Open File ReportsThe objective of this program was to design and build a self-contained system for remote monitoring of the atmosphere in mines. The system developed uses the mine pager phone line as the primary communication channel and also has the capability of using...
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9/1/1980 - Contract reportsThis report adds to the current body of underground communications system design knowledge by: accurately defining (measuring) the 12 dB SINAD sensitivity of the system receivers and then stating the equivalent magnetic field strength in uA/m; showing t...
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Content source: National Institute for Occupational Safety and Health, Mining Program