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Government Calls for Stronger Mine Seals
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AP Online
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February 10, 2007
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Copyright informationCopyright 2007 Associated Press/AP Online. This material is published under license from the publisher through YellowBrix, Alexandria, Virginia. All inquiries regarding rights should be directed to YellowBrix. (Hide copyright information)
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CHARLESTON, W.Va. - Methane gas explosions could generate nearly 13 times more destructive force than the current federal standard for seals in underground coal mines, government scientists said Friday.
The National Institute for Occupational Safety and Health draft report said the maximum pressure in a mine explosion could reach 640 pounds per square inch, far higher than previously thought.
Government regulators have been grappling with questions about seals since 12 miners died in a January 2006 explosion at the Sago Mine. A lightning strike sparked methane gas that had accumulated in a mined-out, sealed-off section of the mine, officials say.
The Sago blast shattered alternative ...
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