An explosion at Mexico's state-owned oil company Pemex in Mexico City
An explosion at Mexico's state-owned oil company Pemex in Mexico City Zuma Press/MCT
An explosion at Mexico's state-owned oil company Pemex in Mexico City Zuma Press/MCT

Mystery surrounds blast at Mexico oil giant Pemex that killed 33

February 01, 2013 05:21 PM

UPDATED February 01, 2013 05:27 PM

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