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Associated Press
Rescue workers and firefighters an injured person after an explosion at an adjacent building to the executive tower of Mexico's state-owned oil company PEMEX, in Mexico City, Thursday Jan. 31, 2013. An explosion at the main headquarters of Mexico's state-owned oil company in the capital killed more than 10 people and injured some 80 as it heavily damaged three floors of the building, sending hundreds into the streets and a large plume of smoke over the skyline. (AP Photo/Eduardo Verdugo)

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