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Results 101 - 110 of 112
11/1/1995 - Reports of InvestigationsLaboratory and field testing results are presented for reducing dust and/or gas ignitions associated with blasting operations in oil shale and sulfide ore mining applications.
4/1/1994 - Conference papersSince 1910, the U.S. Bureau of Mines (USBM) has investigated practical ways of dealing with the consequences of major fires and explosions in underground mines.
1/1/1992 - Reports of InvestigationsThe Bureau of Mines tangentially impacted potential coal-cutter bit shank materials against sandstone to investigate the potential of the materials to ignite natural gas by a friction-generated hot streak.
1/1/1992 - Reports of InvestigationsThe Bureau of Mines completed an investigation of the influence of material on the ignition probability using the breakflash apparatus. This report presents results of an investigation into the influence of disk electrode material on the probability of...
1/1/1988 - Reports of InvestigationsThe Bureau of Mines has developed a system using a high-speed electropneumatic mechanism for the rapid (grab) sampling of dusts and gases during an explosion to monitor pyrolysis-charring in coal particles and combustion of pyrolysis vapors.
1/1/1984 - Reports of InvestigationsMethane-drainage holes must be completely filled by grout before mining to prevent the emission of large quantities of gas during mine-through, which would constitute an explosion hazard. In November 1980, seven horizontal holes at the multipurpose bore...
2/1/1982 - Contract reportsThe objective of this project was to perform a preliminary study to determine the desirability/practicality of burying the communication cables in underground mines in order to protect then from the effects of fires and explosions. We found the overall ...
1/1/1981 - Reports of InvestigationsDescribes a simple, inexpensive test to measure the methane content of coal samples obtained from exploration cores. The results of tests are summarized in tabular form. These results include data on the gas content of 125 coalbeds in 15 states.
1/1/1973 - Information CircularsPresents a brief summary of the explosion trends in United States coal mines for the past 160 years.
4/1/1913 - NIOSH/USBM numbered publicationsA USBM report that presents the results of the first series of coal dust tests conducted in the experimental mine, along with a description of the experimental mine and its establishment.