Coal age
FEATURE ARTICLES
Longwall USA returns as National Coal Show: Largest coal equipment exposition takes place during june in Pittsburgh
Steve Fiscor (ed. lit.)
págs. 34-43
Mine roof geology information system: A methot for quantitative void/fracture detection and estimation of rock strength for underground mine roof
Syd S. Peng, Takashi Sasaoka, David X. Tang, Yi Luo, Gene Wilson
págs. 44-49
SO2 allowance prices: Where have they been and where are they going?
págs. 52-54
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