National Geographic Seconds From Disaster Inferno In Guadalajara

April 1992, Guadalajara, Mexico. On the 19th, residents start 
     complaining of a strong gasoline-like smell coming from the     ªª
     sewers. Three days later, on the 22nd, numerous gas explosions  ªª
     in the sewers over a time span of four hours destroy kilometers ªª
     of housing estate and killing 206 people. But who, if anyone,   ªª
     is to blame? What caused the inferno in Guadalajara?

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