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Home>> Issues and Challenges>> Disasters>> Major Disasters |
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Major Disasters | |||
A broken safety lamp determined how wrong the company was. From the lone piece of safety-equipment came a spark that ignited air. From the flare, the carbon-rich coal in the mine exploded and roared down all the entryways of the mine. The fireball spared no miners life. The single, sharp blast from the company whistle that day was a signal that prayers would need to made anew.
That day, the No. 3 mine exploded and left no survivors. According to Chief Inspector or Mines, Thomas Gaham, Augustus Leonard’s broken safety lamp ignited methane gas 7,000 feet inside the mine. The resultant gas explosion travelled down a crosscut, augmented by suspeneded coal dust and ripped through the mine with such violence that it was a year later before the community could recover the last 12 of the 34 bodies. To understand the force of the No. 3 mine explosion, magnify the power of a loaded shotgun. Leonards lamp (the gun’s hammer) ignited the gas (the bullet’s primer, the gas flared and caused the coal dust to explode (the gunpowder goes off) and the resultant explosion roared down the entryways (the guns barrel). At the inquest, the testimony revealed that almost continuously for 30 days prior there had been from ½ inch to ¾-inch gas-cap present. The Wolfe safety lam shows a blue section on top of its flame whenever gas is present, and its variation determines the percentage of methane gas. In 1917, it was generally thought that a ½-inch gas-cap equaled 2 – 2 ½ % methane. However, with the introduction of the more accurate “Burrell” gas-detector that year, mining companies were now realizing their critical misconception. The Burrell demonstrated that ¼-inch and not ½-inch gas-caps represented 2 ½% methane and that ½-inch gas-cap equaled 3 ½ %.
The company explained away William’s findings, claiming that a controlling door was broken at the time and ventilation was deranged as a result. Yet miners at the end of the morning shift on April 5th reported a ¾-inch gas-cap. That meant there was well over 4% methane. As a result of the accident, many improvements were inaugurated to ensure the safety of the coal miners. The most important introduction was the Edison electric mine lamp, which reduced the chances of errant sparks. In the Crowsnest Pass mines alone, 960 of the new lamps were installed that year alone. Other measures included the incorporation of the Burrell gas detector as the main instrument to detect methane gas. It was capable of measuring as low as 1/10 of 1% of methane, and all inspectors and Crowsnest Pass mines were equipped with them. Other issues given more attention that year were treatment of coal-dust and protection from electrical storms using lighting arrestors at mine mouths. It became a rule in force in Pass mines that the workmen must be withdrawn when the percentage of gas in the air is over 2 1/2% This section explores incidents like the 1917 Coal Creek
Disaster and the impacts they had on mining society. |
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