Accident investigations board will look into the cause of an April explosion that killed two working on a basement water heater and badly injured a third .
A federal jury on Aug. 9 found Pacific Gas & Electric guilty of violating federal pipeline safety regulations before a fatal natural-gas pipeline explosion in San Bruno, Calif., in 2010 and, further, of obstructing investigators after the incident.
On Sept. 9, 2010, a 30-in.-dia, Pacific Gas & Electric-owned natural-gas pipeline exploded (above), killing eight people in a residential neighborhood of San Bruno, Calif.