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Gas main explosion rocks Pa. neighborhood

January 18, 2011 12:00:00 AM PST
A leaking gas main exploded in a fireball Tuesday night in Philadelphia. One gas company worker was killed and five others were hospitalized, three of them in critical condition.

Firefighters and gas company workers had evacuated nearby homes.

They were trying to stop the leak in the 12-inch main when it exploded, rocking the neighborhood and setting two houses on fire.