Ground control safety analysis of extended cut mining. Information circular/1993

The objective of analyzing roof fall fatalities was to determine the roof falls resulting from extended cutting, then define specific characteristics of both extended and nonextended cut roof fall fatalities. All MSHA roof fall fatality reports for 1988 through 1992 were methodically reviewed. The results reported are based on the fatalities that occurred during this 5-year period, because all reports were available and the mines with extended cut approval were known.