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Results 311 - 320 of 646
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7/1/2005 - Conference papersThis manuscript will discuss five different research studies conducted by the National Institute for Occupational Safety and Health (NIOSH) which use ventilation in some application to lower workers' respirable dust exposures at surface and metal/nonmet...
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7/1/2005 - Conference papersLarge-scale explosion tests conducted within the multiple-entry section of NIOSH's Lake Lynn Experimental Mine (LLEM) are currently the only accepted test method for deeming a seal design suitable for use in U.S. mines. These explosion tests are labor-i...
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6/1/2005 - Conference papersThe focus of this paper is the use of a GAG 3A jet engine system to either combat large out-of-control fires or render an entire mine inert when access to problem areas is difficult or impossible.
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6/1/2005 - Conference papersThis paper presents a discussion of the firefighting approach at the Excel No. 3 Mine and an analysis of the results of the application of gas-enhanced foam technology.
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6/1/2005 - Conference papersThis study used microseismic emissions to help identify three local rock failure processes. It was also shown that analysis of microseismic emissions can aid in assessing the degree of instability associated with these local rock failure processes.
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6/1/2005 - Conference papersNIOSH, in cooperation with U.S. Foam Technologies, Inc., conducted a series of experiments at its Lake Lynn Experimental Mine to study the stability, transport, control, and fire extinguishing effectiveness of nitrogen-enhanced foam technology.
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6/1/2005 - Conference papersThis paper describes the application of a finite difference program to develop a geomechanical model that predicts permeability changes within the rock mass.
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6/1/2005 - Conference papersThis paper evaluates the effectiveness of remotely applied nitrogen-enhanced foam to aid in efforts to isolate and suppress a mine fire.
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5/1/2005 - Conference papersNIOSH has initiated a reservoir modeling effort to better understand the interaction of the various geotechnical factors influencing gas flow within and to the underground longwall mining environment. A focus of this modeling effort has been (1) the pre...
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4/1/2005 - Conference papersA major concern in sill mat design is the loading and strengths associated with the overlying sill mat. This paper reviews past practice and present observations and measurements from over 10 mines and outlines concerns for design requirements.
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Content source: National Institute for Occupational Safety and Health, Mining Program