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Summary of Fatalities Occurring at Underground Coal Mine Disasters Since 1980 By State State No. of Incidents No. of Fatalities Alabama 1 13 Colorado 1 15 Illinois 2 6 Kentucky 11 51 Pennsylvania 3 7 Tennessee 1 13 Utah 3 38 Virginia 4 22 West Virginia 8 63 Total 34 228   By Type Accident Type No. of Incidents No. of Fatalities CO Poisoning 1 3 Coal Dust Explosion 2 15 Detonation of Explosives 2 6 Fall of Material 1 3 Fall of Person 1 5 Inundation 1 3 Methane Explosion 16 133 Mine Fire 2 29 Roof Fall 8 31 Total 34 228

By Month Month No. of Incidents January 5 February 3 March 1 April 3 May 1 June 2 July 4 August 4 September 4 October 1 November 1 December 6 Total 35 *

By Weekday Day No. of Incidents Sunday 2 Monday 9 Tuesday 4 Wednesday 11 Thursday 6 Friday 1 Saturday 2 Total 35 *

* The Crandall Canyon disaster of August 2007 counts as 2 incidents