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Castle Gate Mine disaster
The Castle Gate mine disaster occurred on March 8, 1924, in a coal mine near the town of Castle Gate, Utah (now dismantled), located approximately southeast of Salt Lake City. All of the 171 men working in the mine were killed in the series of three violent explosions. One worker, the leader of the rescue crew, died from carbon monoxide inhalation while attempting to reach the victims shortly after the explosion.〔 〕
==The explosions==
The explosions were determined to have been caused by a failure to properly dampen coal dust in the mine during the previous shift. The first blast occurred between 8:00 a.m. and 8:15 a.m. in a chamber approximately from the entrance to the Utah Fuel Company's Castle Gate Mine #2. A fire boss in this chamber was investigating gas near the roof of the mine when his carbide lamp went out. The miner attempted to relight his lamp with a match which ignited the gas and coal dust, setting off a gigantic explosion.〔 〕
The force of the explosion was powerful enough to launch a mining car, telephone poles, and other equipment across the canyon, a distance of nearly a mile from the entrance to the mine.〔 〕 The steel gates of the mine were ripped from their concrete foundations. Inside the mine, rails were twisted, roof supports were destroyed, afterdamp and coal dust filled the air, and the lamps of the surviving miners were blown out. As these men attempted to relight their lamps, a second explosion was sparked, killing the remainder of the workers in the mine. A third explosion occurred approximately 20 minutes later, causing a destructive cave-in.〔 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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