Huge explosion and fire killed 23 people, October 23, 1989
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1989 Pasadena, TX, Explosion
Gas leaks which originated at the Phillips 66 factory, led to a destructive series of explosions and fire that killed 23 employees and injured 314 more. The explosion was identical to an earthquake registering 3.5 on the Richter scale. In addition, the explosion caused $715.5 million damage.