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'94 San Bruno Pipeline Upgrade Didn't Include Explosion Site

SAN BRUNO (AP) -- Records show utility crews replaced five miles of aging gas pipes under a San Bruno neighborhood less than two decades ago but stopped just short of a segment that ruptured and exploded last year.

Gallery: San Bruno Explosion

Documents released this week in a federal investigation into the deadly explosion show Pacific Gas & Electric Co. had replaced the pipes in 1994 for seismic safety concerns. The new, stronger steel pipes, however, ended about 300 yards from the epicenter of September's blast in San Bruno's Crestmoor neighborhood.

PG&E spokesman confirmed that the seismic upgrades were done and said officials were still working to determine why the work didn't replace all the pipes in the area.

The explosion and resulting fire killed eight people and destroyed dozens of homes.

(© 2011 CBS Broadcasting Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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