Richard Clark, director, California Public Utilities Commission, Consumer Protection and Safety Division, testifies before the National Transportation Safety Board (NTSB) hearing in Washington, ... more 
Richard Clark, director, California Public Utilities Commission, Consumer Protection and Safety Division, testifies before the National Transportation Safety Board (NTSB) hearing in Washington, Wednesday, March 2, 2011, to gather additional factual information for the ongoing investigation into the natural gas pipeline rupture and explosion that occurred in September 2010 in San Bruno, Calif. less 
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Associated Press | Photo By Cliff Owen
Wed, Mar 2, 2011 6:06 PM EST