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Results 11 - 20 of 27
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This video follows two new hires through their first week on the job. Ted and Slick have not paid attention in training class and prove to be hazards to themselves as well as everyone around them.
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10/1/2006 - Technology NewsDescribes the Roof Fall Risk Index (RFRI), a method of systematically characterizing the risk of roof falls in underground limestone mines.
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8/1/2006 - Conference papersA survey of pillar conditions was carried out at 21 operating limestone mines that use the room-and-pillar method. Pillar instability is most likely caused by unfavorable geological structures in pillars with width to height ratios of less than 1.5.
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6/1/2006 - Conference papersNIOSH researchers have demonstrated that mine-wide ventilation in large-opening stone mines can be improved by using low-pressure, high-volume propeller fans and constructing stoppings in key locations to direct and control airflow.
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1/1/2005 - Conference papersIn some underground limestone mines, the dip may exceed 5°. This can cause roof instability, which can be exacerbated by horizontal tectonic stresses. Field studies and numerical model analyses assess the effect of dip in various stress conditions.
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8/1/2003 - Conference papersThe purpose of this paper is to evaluate the preliminary findings of a long-term underground study of various types of surface support liners, and to examine installation practices that are critical for an effective liner material application.
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1/1/2003 - Technology NewsDiscusses a video developed by NIOSH to provide safety training for workers in aggregate operations. Although the target audience was primarily new hires, the finished video was also to be relevant to more experienced workers.
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8/1/2002 - Conference papersThe NIOSH Pittsburgh Research Laboratory is involved in research to identify silica dust sources and generation in underground metal/nonmetal mines. A summary of sampling procedures, resulting data, and methods being investigated to reduce silica dust w...
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8/1/2002 - Conference papersThis paper offers a close look at the complex structural environment of the Loyalhanna Limestone of southwestern Pennsylvania. Analyses were performed using gas well and core logs, outcrop examinations, underground observations, and mine maps.
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8/1/2001 - Conference papersThe location and time of 2,007 microseismic emissions from a limestone mine were compared with mine face development and mine layout characteristics. The occurrence of roof failure zones appears to be associated with mine plan characteristics.
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Content source: National Institute for Occupational Safety and Health, Mining Program