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The top documents tagged [longwall face slide]
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longwall face slide
Upper Big Branch Mine–South Mine ID: 46-08436 April 5, 2010 Accident Public Briefing June 29, 2011 Evidence still being collected and analyzed.
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New Technology and Challenges for Underground Coal Mining B.N. Basu Director (CRD) CMPDI सी एम पी डी आई एक मिनि रत्न कंपनी Cmpdi (A
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