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- Research methods and measures:
- Numerical modeling
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Results 91 - 97 of 97
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1/1/1993 - Reports of InvestigationsIn situ stresses are important input data for the design of safe, stable stope layouts and extraction sequences. In situ stresses were measured at the Homestake Mine, Lead, SD, using overcoring on hollow inclusion cells and borehole deformation gauges.
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11/1/1988 - Information CircularsBased on a comprehensive data base of mining accidents, a computerized catastrophe model has been developed by the Bureau of Mines which systematically links individual psychological, group behavioral, and mine environmental variables with other acciden...
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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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10/1/1982 - Reports of InvestigationsThe Bureau of Mines electromagnetic trapped miner location and communications system requires a thorough understanding of TTE electromagnetic wave propagation.
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1/1/1979 - Contract reportsThis report presents a mathematical model for the propagation of UHF radio waves in the large cross section tunnels of a room-and-pillar limestone mine and describes the analysis of a small amount of propagation data obtained. The model and analysis is ...
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10/1/1978 - Conference papersThe analysis of a machine-luminaire configuration is well suited to computer analysis; the incident light levels can be calculated at the required set of points. This paper presents a description of the techniques involved in this simulation.
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1/1/1972 - Reports of InvestigationsA sorption apparatus for measuring the equilibrium sorption isotherm and the rate of diffusion of methane from fine-sized coal was designed and constructed. Preliminary work that used Pittsburgh and Pocahontas No. 3 Coal shows that the diffusion coeffic...
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Content source: National Institute for Occupational Safety and Health, Mining Program