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Stratford Evening Post, Volume XXXIX, Issue 84, 30 July 1914, Page 6

The awe-inspiring spectacle* of tlio side of a mountain being lifted bodily into tho air with a roar that could lie heard for miles around was recently witnessed by the inhabitants of Minerva, Colorado. The blast took place at the local quarries, two tons of dynamite forming the charge. This was exploded by means of an electric current, from half a mile away, and when the 60,000 tons of rock thus moved settled down in acloud of dust at the bottom of tho quarry it was seen that the mountain bad been cut clean through as though by a knife. It was the biggest blast that has ever taken place in the Colorado 1 district. The event was cinematograplied.