4Wiles T D.Reliability of numerical modelling predictions Interna-tional. Journal of Rock Mechanics and Mining Sciences . 2006
5Kumar K,Chandra D,Jalswal R J.Reliability considerations in theuse of intrinsically safe barriers for instruments in coal mines. Mining Technology . 1993
6Kovalchik,P.G,Duda,F.T.Speed and position sensors for mine hoists and elevators. Industry Applications Conference,1995.ThirtiethIAS Annual meeting,IAS’95,Conference Record of the 1995 IEEE . 1995