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Results 131 - 140 of 270
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1/1/1992 - Reports of InvestigationsThe U.S. Bureau of Mines established a wire rope research laboratory to examine the factors that affect the life of wire rope. The tests indicated that once a wire rope nears the end of its service life, both deterioration and the consequent loss of ro...
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1/1/1992 - Reports of InvestigationsThe U.S. Bureau of Mines developed and tested a teleoperating system to control a new highwall mining system. Surface and production testing proved that the teleoperating system supplied the operator with sufficient sensory information to operate the m...
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1/1/1992 - Reports of InvestigationsThis report presents a Bureau of Mines study to identify the causes of self-heating events beneath the floor of a deep underground coal mine. The combined results led to the conclusion that pyrite oxidation was the prime cause of the heatings.
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1/1/1992 - Reports of InvestigationsThe U.S. Bureau of Mines applied its mine fire diagnostic method to an abandoned anthracite mine fire site in Carbondale, Lackawanna County, PA.
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1/1/1992 - Reports of InvestigationsThe Bureau of Mines conducted experiments for predicting materials' ease of combustion (smoldering onset, smoldering, flaming, and decomposition rates) by means of sub micrometer smoke particle characteristics of the development of a simple test method.
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1/1/1992 - Reports of InvestigationsStability analyses of fractured and faulted rock masses require delineation of the position, extent, and orientation of geologic discontinuities. Recommendations are made for increasing the accuracy of locations of microseismic events detected.
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1/1/1992 - Reports of InvestigationsThis report documents the status of a laser-based underground guidance system for tracking and controlling the movements of underground mobile mining equipment.
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1/1/1992 - Reports of InvestigationsA prototype mucking machine designed to operate in narrow-vein stopes was developed by Foster-Miller, Inc., Waltham, MA, under contract with the U.S. Bureau of Mines. To correct deficiencies of the tether-remote-control system, a computer-based, radio-...
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1/1/1992 - Reports of InvestigationsThe purpose of this U.S. Bureau of Mines study was to assess the ability of trainees to don an unfamiliar self-contained self-rescuer (SCSR) after having become familiar with how to put on a different type of apparatus.
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1/1/1992 - Reports of InvestigationsAs part of an investigation aimed at improving the health and safety and competitiveness of the mining industry, the U.S. Bureau of Mines evaluated the application of common offset radar profiling, using a 250-MHz ground-penetrating radar (GPR) system, ...
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Content source: National Institute for Occupational Safety and Health, Mining Program