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Large plumes of smoke rise from the Amuay refinery as national guards soldiers watch near Punto Fijo, Venezuela, Saturday, Aug. 25, 2012. A huge explosion rocked Venezuela's biggest oil refinery, killing and injuring dozens, an official said. (AP Photo/Abisaid Cermeno)

Venezuela refinery fire

Venezuelan firefighters put out a blaze at the country's biggest oil refinery

on Aug. 28, paving the way for a restart of the facility and an

investigation into the world's deadliest refinery accident in fifteen