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- Tasks and activities:
- Mine design
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Results 31 - 40 of 55
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3/1/2006 - Technology NewsThe use of highwall mining systems has increased substantially in open-pit coal mines. It is used where overburden depth exceeds economical recovery. Highwall stability remains the major safety concern during highwall mining. The Mine Safety and Health ...
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12/1/2005 - Theses/DissertationsA new protocol based on arching has been developed to determine the true transverse load capacity of stoppings.
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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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6/1/2004 - Conference papersNIOSH researchers have identified a pattern of fracture zone development as an explanation for fracture formation around rectangular openings in underground mines. Two computer modeling codes were used to model different aspects of this pattern.
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2/1/2004 - Conference papersDescribes three alternative ventilation models for use in large opening underground mines with respect to their use in mines of various levels of development.
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8/1/2003 - Conference papersNIOSH is conducting research to develop mine design algorithms that will result in safer multiple seam mines. This paper presents an overview of multiple seam issues in the central Appalachian coalfields.
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4/1/2003 - Technology NewsThe Coal Mine Roof Rating (CMRR) is a roof classification system. It was first introduced to the mining community in 1994. It has now been written to a user friendly version that can be run on any PC with a Windows operating system.
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2/1/2003 - Conference papersIn this paper, existing ore pass design criteria rules-of-thumb using current particle flow equations are reviewed and a comparison of two computer modeling programs, Working Model (WM 2-D) and PFC2d, to simulate rock flow are investigated.
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8/1/2002 - Conference papersThe purpose of this paper is to bring the mining community up to date with recent improvements and applications of the CMRR.
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8/1/2001 - Technology NewsAn announcement for Information Circular 9453 - Proceedings: New Technology for Coal Mine Roof Support.
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Content source: National Institute for Occupational Safety and Health, Mining Program