Title: Practise in combined mining roof caving coal at lower position in large angle thick coal seam
Abstract:This paper describes the process of practicing roof caving at lower position in large angle thick coal seam,and issues some improvement measures It has made good result...This paper describes the process of practicing roof caving at lower position in large angle thick coal seam,and issues some improvement measures It has made good resultRead More
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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