THE WAYS TO IMPROVE WORK SAFETY IN COAL MINES IN AN UNSTABLE ENVIRONMENT

Author(s):  
Boris Kobylyansky ◽  
2012 ◽  
Author(s):  
Stephan Hinrichs ◽  
Markus Hackenfort ◽  
Hans-Peter Musahl
Keyword(s):  

2004 ◽  
Author(s):  
Rebecca J. Atkins ◽  
H. Peter Pfister ◽  
Mark Fleming ◽  
Steven M. Smith

1935 ◽  
Vol 4 (23) ◽  
pp. 188-189
Author(s):  
C. P.
Keyword(s):  

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