The
Springhill Mining Disaster was a bump that occurred in
Springhill, Nova Scotia,
Canada on October 23, 1958. Debate over the cause of the August 6, 2007,
Crandall Canyon Mine disaster, which took place 1,800 feet beneath the surface, raised public awareness about coal mine bumps. Seismologists at the University of Utah and the University of California, Berkeley concluded that an associated 3.9 magnitude temblor was likely caused not by an earthquake, but by the collapse itself. The mine's owner,
Robert E. Murray, adamantly disagreed. ==References==