. Bulletin . one is allowed to approach theworking place. 16 A PRIMER ON EXPLOSIVES. EXAMPLE OF POISONING IN OPEN QUARRY BY GASES FROM POWDER. Neglect of this precaution led to the death of 7 persons and therendering of 40 others unconscious from gas poisoning followingthe firing of 21,000 pounds of blasting gunpowder at the Craraequarry. Loch Fyne, Scotland, on September 25, 1886. The quarrywas situated in a basin in a hill with sides rising 25 to 250 feet, andwas approached by a narrow gorge. (See PI. Ill, A.) The blast wasfired in the presence of an audience of over 1,000 persons stationed
. Bulletin . one is allowed to approach theworking place. 16 A PRIMER ON EXPLOSIVES. EXAMPLE OF POISONING IN OPEN QUARRY BY GASES FROM POWDER. Neglect of this precaution led to the death of 7 persons and therendering of 40 others unconscious from gas poisoning followingthe firing of 21,000 pounds of blasting gunpowder at the Craraequarry. Loch Fyne, Scotland, on September 25, 1886. The quarrywas situated in a basin in a hill with sides rising 25 to 250 feet, andwas approached by a narrow gorge. (See PI. Ill, A.) The blast wasfired in the presence of an audience of over 1,000 persons stationed ona steamer about a mile distant. At least half an hour elapsed afterthe blast had been fired before passengers from the steamer, to theapproximate number of 120, got into the quarry to observe the effect,and within five to six minutes after entrance they began to fall, over-come by the poisonous powder gases entangled in the crevices of therock that had been thrown down. BUREAU OF MINES BULLETIN 80 PLATE III. A. CRARAE QUARRY, LOCH FYNE, SCOTLAND.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
