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#OTD in 1958 – The Springhill Mine bump: An underground earthquake traps 174 miners in the No. 2 colliery at Springhill, Nova Scotia, the deepest coal mine in North America at the time.
By November 1, rescuers from around the world had dug out 100 of the victims, marking the death toll at 74. “The Ballad of Springhill” was composed by American folksinger Peggy Seeger and English f…