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ICS (webmaster) comment: As usual, Dalton Camp's description (above) of the inner workings of the political jungle is superb, but I must disagree with a significant technical detail. Mr. Camp wrote: "Underground explosions in coal mines were called 'bumps.' "
Wrong. As the word was used in the coal mining world of the 1960s, a "bump" was very different from a methane or dust explosion. An explosion is a chemical process, while a 'bump' is a physical or geological process a sudden movement of the rock walls or floor of the mine tunnel, which occurs only at great depths. An explosion eliminates oxygen in the mine atmosphere and replaces it with carbon monoxide and other poisonous and suffocating gases. After a 'bump', there is no change in the mine atmosphere, it is as breathable as before the 'bump'. These differences, between a bump and an explosion, have important implications for the survival prospects of miners trapped underground. An explosion can occur in any enclosed space. A bump can occur only in a very deep mine. Because of their great depth, bumps were common in the mines at Springhill, Nova Scotia — a bump could not occur in the Westray mine at Stellarton because it was relatively shallow. Mr. Camp wrote: "Only a day or so ago, a member the Stanfield government reminded me that, as a result of the bump at the Stellarton mine, Stanfield had achieved agreement with local authorities, including the mayor of Stellarton, that the mine would remain closed since it was believed too dangerous for use." My recollection is that this event at Stellarton was an explosion, not a bump. The coal seams around Stellarton, especially the Foord seam, have been notorious for more than a century for being extremely gassy, and thus very dangerous because of the explosion risk. I do not recall any 'bump' in a Stellarton mine. |
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