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Pipeline fire

Mexican army soldiers arrive to aid after an explosion ripped through a gas pipeline distribution center in Reynosa, Mexico near Mexico's border with the United States, Tuesday Sept. 18, 2012. (AP Photo/El Manana de Reynosa)

Mexico pipeline explosion

January 1, 1970

Mexico's state-owned oil company says at least five people are still

listed as missing in a pipeline fire that killed 26 workers and injured

46 others at a plant near the U.S. border. (Sept. 19)