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Results 71 - 80 of 270
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1/1/1996 - Reports of InvestigationsPittsburgh Research Center conducted experiments with mine conveyor belt samples in a 20-L furnace and in a laboratory fire tunnel to measure and compare the major toxic gas concentrations evolved during the combustion of the materials.
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1/1/1996 - Reports of InvestigationsA U.S. Bureau of Mines case study of pillar recovery in high-grade ore near the Ross shaft at the Homestake Mine, Lead, SD, has demonstrated the usefulness of the finite-element method for evaluating shaft pillar mining plans and shaft stability. In thi...
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1/1/1996 - Reports of InvestigationsResearchers at the U. S. Bureau of Mines conducted investigations to evaluate the potential for ground water contamination by mine waste used as backfill.
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1/1/1996 - Reports of InvestigationsAn evaluation of the comparative responses of five types of commercially available smoke detectors and a diffusion-mode CO detector under normal and reduced airflow conditions.
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1/1/1996 - Reports of InvestigationsStrength characteristics and air leakage resistance of seals and designs of water traps used in underground coal mines were evaluated in a joint effort by the Pittsburgh Research Center and the Mine Safety and Health Administration.
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1/1/1996 - Reports of InvestigationsGround penetrating radar (GPR) has been investigated by NIOSH for its potential to determine roof hazards in underground mines. GPR surveys were conducted at four field sites with accompanying ground truth to evaluate GPR for roof hazard detection.
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1/1/1996 - Reports of InvestigationsA joint effort by the Pittsburgh Research Center (PRC) and the Mine Safety and Health Administration (MSHA) 3 was undertaken to determine how well self-contained self-rescuers (SCSR's), deployed in accordance with Federal regulations (30 CFR 75.1714), h...
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1/1/1996 - Reports of Investigations214 underground coal miners were interviewed to determine mine workers' state of fire-fighting preparedness and the technology being used to detect and respond to underground mine fires. Several important changes are suggested to deal with fires.
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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.
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7/1/1995 - Reports of InvestigationsU.S. Bureau of Mines researchers reviewed an in situ stress estimate developed from measurements of overcore strain taken at test sites on the 7300 and 7500 levels of the Star Mine near Mullan, ID. Although the field measurements of overcoring strain we...
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Content source: National Institute for Occupational Safety and Health, Mining Program