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5 NEWS UPDATE: Investigators Say Pipe Had Thinned Before Explosion
Written by Your 5News Team
Last updated on December 13, 2012 @ 11:37PM
Created on December 13, 2012 @ 7:12PM
Photo CBS News
 
CHARLESTON, W.Va. (AP) - Federal investigators say a portion of the gas line that exploded Tuesday had thinned to less than a tenth of an inch thick before the blast.
 
Investigators with the National Transportation Safety Board are looking into the cause of Tuesday's explosion in Sissonville, which destroyed four homes and charred a large swath of Interstate 77. There were no serious injuries.
 
NTSB spokesman Robert Sumwalt said Thursday that investigators noted thinning at the bottom of a 6-foot section of pipe. It had deteriorated roughly 70 percent.
 
Sumwalt said the pipe will be shipped to the agency's Washington lab for investigation.
 
Investigators are looking into why alarms did not sound at Columbia Gas Transmission's Charleston control room during the explosion.
 
Officials have said a cause may not be determined for some time.
 

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