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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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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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Content source: National Institute for Occupational Safety and Health, Mining Program