Sago mine explosion caused by lightning strike, it seems

A report in the North West Herald today suggests that is was a lightning strike that caused the Sage mine explosion. A lightning strike a mile from the mouth of the Sago Mine probably sent an electrical pulse along a power line, ultimately igniting methane gas and causing the explosion that killed 12 miners. The electrical charge apparently flowed from a tree to a power line 300 feet away and thus into the mine. For full story, see
http://www.nwherald.com/MainSection/other/288951824003865.php

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