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Results 61 - 70 of 142
Relationship Between Radiated Seismic Energy and Explosive Pressure for Controlled Methane and Coal Dust Explosions in an Underground Mine3/1/2012 - Peer reviewed journal articlesThis paper describes the research conducted to quantify a relationship between measured values of radiated seismic energy and peak explosive pressure generated.
6/1/2010 - Conference papersIn this paper instrumentation and sampling strategies for accurate monitoring of airflow in an entry using two-axis and three-axis ultrasonic anemometers are evaluated.
6/1/2010 - Conference papersNIOSH has developed a portable elemental carbon monitoring device for use in underground mines. This paper discusses a variety of ways that this instrument has been used to help lower DPM concentrations and exposure to DPM in active mines.
11/1/2009 - Conference papersThe paper discusses how the Diesel Particulate Matter (DPM) monitors have performed within the underground mine environment in evaluating DPM during the various phases of longwall moves.
Improvements in Seismic Event Locations in a Deep Western U.S. Coal Mine Using Tomographic Velocity Models and an Evolutionary Search Algorithm9/1/2009 - Peer reviewed journal articlesMethods of improving seismic event locations were investigated as part of a research study aimed at reducing ground control safety hazards. Results obtained using different velocity models are compared.
Evaluation of Sequential Extraction Procedures for Soluble and Insoluble Hexavalent Chromium Compounds in Workplace Air Samples2/1/2009 - Peer reviewed journal articlesThe results of this study by NIOSH have served to provide performance data in support of the procedures described in the international standard methods, for which such results were previously unavailable in the peer-reviewed literature.
12/1/2008 - Peer reviewed journal articlesThis paper describes the in-mine evaluation of a smart mine fire sensor system and discusses recommendations for improving the system.
Local Earthquake Tomography for Imaging Mining-Induced Changes Within the Overburden above a Longwall MineThe objective was to determine whether a qualitative but coherent redistribution of velocity, indicating change in location of induced stress, could be imaged as mining occurred in known locations by using a local earthquake tomography software.
This paper will review current and historic work practices used internationally to minimize the hazard to miners from mining in conditions which could produce a bump.
This paper describes a case study where a surface-based microseismic system, using triaxial geophones in boreholes drilled from the surface, was deployed at a large limestone mine.