Deep cover pillar extraction in the U.S. coalfields
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Deep cover pillar extraction in the U.S. coalfields

  • 08/01/2002

  • Source: Proceedings of the 21st International Conference on Ground Control in Mining, August 6-8, 2002, Morgantown, West Virginia. Peng SS, Mark C, Khair AW, Heasley KA, eds., Morgantown, WV: West Virginia University, 2002 Aug; :68-80
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