UGI CEO John Walsh says the investigation into the February 9 explosion will take an additional six to eight weeks before a final determination is made about the circumstances surrounding the blast.
Walsh and other officials addressed a congressional subcommittee hearing about the pipeline safety Monday morning in King of Prussia.
Two fatal natural gas explosions have occurred in southeastern Pennsylvania in recent months. An elderly couple and a 4-month-old boy were among the victims of the Allentown blast. A Philadelphia Gas Works employee was killed in a January explosion.