COAL ENGINEERING ›› 2014, Vol. 46 ›› Issue (8): 35-37.doi: 10.11799/ce201408012

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Introduction to the thick alluvium supporting design and construction of vertical shafts

  

  • Received:2014-03-28 Revised:2014-04-29 Online:2014-08-11 Published:2014-08-10