Small Manhole Explosion Knocks out Power to Some SF Customers

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    NEWSLETTERS

    NBC Bay Area
    A small explosion sent a 150-pound manhole cover flying, and ultimately knocking the back bumper off a moving car, before hitting the street. (April 5, 2013)

    It could have been disastrous.  A manhole cover blasted into the air in San Francisco in the Financial District. Pacific Gas & Electric says a broken electrical wire is to blame.

    It happened Friday around 11:30 a.m. on Bush near Stockton. An underground electrical wire separated, setting-off the small explosion.

    That sent a 150-pound manhole cover flying, and ultimately knocking the back bumper off a moving car, before hitting the street.

    The explosion temporarily knocked out power to 1,300 customers.  PG&E restored power around 2 p.m.

    The utility says it is still trying to determine why the wire failed.