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Results 11 - 16 of 16
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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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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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5/1/1998 - Technology NewsNIOSH has developed the Hazard Recognition Training Program for Underground Limestone to teach miners to recognize visual cues that distinguish poor ground conditions.
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1/1/1979 - Contract reportsThis report presents a mathematical model for the propagation of UHF radio waves in the large cross section tunnels of a room-and-pillar limestone mine and describes the analysis of a small amount of propagation data obtained. The model and analysis is ...
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Content source: National Institute for Occupational Safety and Health, Mining Program