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.
