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- Document types:
- Conference papers
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Results 1 - 10 of 13
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1/1/2010 - Conference papersThis paper describes two algorithms that can provide greater accuracy for underground miner tracking systems.
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1/1/2010 - Conference papersThis paper introduces algorithms to locate miners with no need for external reference sensors. There are definitions of useful mathematical operations that can be performed on the node coordinates and includes a description of the algorithms.
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1/1/2009 - Conference papersThis paper introduces two position adjustment methods for mine tracking systems which use a coplanar node-path network mine model as the foundation for their development.
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9/1/2003 - Conference papersResearchers have developed a miniature data acquisition system (MIDAS) that can measure resistance changes and temperature, store data for later retrieval, and illuminate LED lights. This instrument can be used with strain-gaged bolts, cable bolts, CSIR...
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7/1/1994 - Conference papersThe paper, presents the results of roof coal thickness measurements in underground mines and rib coal thickness measurements in highwall mines. The microwave sensor described uses a unique spatial modulation scheme created by antenna motion, along with ...
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7/1/1982 - Conference papersA new phone system was developed that provides eight full duplex communications channels over a single twisted shielded phone line, with no central switching station or line amplifiers. This system greatly simplifies installation and maintenance over th...
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10/1/1978 - Conference papersAn analysis is made of the trolley line as a communications line, and methods of improving its characteristics are discussed.
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8/1/1978 - Conference papersMedium-frequency (MF) waves can propagate in a coal seam, bounded above and below by conducting rock, in an approximate transverse electro-magnetic (TEM) transmission-line mode with the electric field vertical and the magnetic field horizontal. The theo...
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1/1/1977 - Conference papersThis report is a comprehensive summary of the results of the propagation measurements program conducted for the Bureau of Mines.
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8/1/1976 - Conference papersA brief description is given of various Bureau of Mines research activities that have begun since July 1974 and are not being reported on by others at the Third West Virginia University (WW) Conference on Coal Mine Electrotechnology.
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Content source: National Institute for Occupational Safety and Health, Mining Program