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A horizontal hole 7 feet deep had been drilled in the whin rock at the bottom of the quarry (where water collected). It had been fired three times a few days before the accident, and the rock displaced worked off. Three or four feet of the hole was left on, and on the day of the accident this was charged with about 1 lb. of fine-grained gunpowder, and fired by means of Bickford, Smith & Co.'s No. 9 double tape sump fuse for use in very wet ground. About half an hour afterwards deceased and his assistant charged the hole a second time with 3 lbs. of gunpowder, and were stemming it, using the wooden end of a wood and copper loader, when the charge exploded, killing deceased and seriously injuring his assistant. The presumption is that a portion of the fuse from the first shot had remained smouldering in the hole.
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