A Christmas tree is seen on one of the empty home sites that was effected by the gas pipeline explosion in San Bruno, Calif., on Tuesday, Dec. 14, 2010. A gas pipeline that ruptured and caused a ... more 
A Christmas tree is seen on one of the empty home sites that was effected by the gas pipeline explosion in San Bruno, Calif., on Tuesday, Dec. 14, 2010. A gas pipeline that ruptured and caused a deadly explosion in a Northern California neighborhood showed no signs of corrosion and wasn't dented or leaking, federal accident investigators said Tuesday. less 
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Associated Press | Photo By Tony Avelar
Thu, Dec 16, 2010 3:28 PM EST