scholarly journals Mine entry system: longwall top slicing of thick coal seams. Design and evaluation. Final report. Volume 1

1977 ◽  
Author(s):  
R. Ellison ◽  
R. Dunham ◽  
D. Shaw
Keyword(s):  
2002 ◽  
Author(s):  
Teresa Nastoff ◽  
◽  
Diane M. Drew ◽  
Pamela S. Wigington ◽  
Julie Wakefield ◽  
...  

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