8Duzgun H S. Analysis of roof fall hazards and risk assessment for Zonguldak coal basin underground mines[J].International Journal of Coal Geology,2005,(64):104-115.
9Mitchell R J,Driscoll T R,Harrison J E. Traumatic work-related fatalities involving mining in Australia[J].Safety Science,1998,(29):107-123.
10Larsson T J,Field B. The distribution of occupational injury risks in the state of Victoria[J].Safety Science,2009,(40):419-437.
