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Publications by [Zipf R. K.]

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This paper reviews the current state of knowledge and practice in highwall mining. Highwall mining has become a widely applied method in surface mining. It is commonly used alone or in conjunction with contour or slot mining. It provides 800 to 1,200 ft of ...
Reference: 24th International Conference on Ground Control in Mining, Morgantown, West Virginia, August 2-4, 2005
Highwall mining is an important coal mining method. More than 60 highwall miners are presently in operation, and they may account for about 4% of total U.S. coal production. A review of accident data for 1983-2002 from the Mine Safety and Health Administration ...
Reference: 23rd International Conference on Ground Control in Mining. Morgantown, WV, August 3-5, 2004: West Virginia University, 2004