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Firefighters and rescue teams work at the Amuay oil refinery after an explosion in Punto Fijo, Venezuela, Saturday, Aug. 25, 2012. A huge explosion rocked Venezuela's biggest oil refinery and unleashed a ferocious fire Saturday, killing over 20 people and injuring dozens in the deadliest disaster in memory for the country's key oil industry. (AP Photo/Diario EL Amanecer)

Firefighters and rescue teams work at the Amuay oil refinery after an explosion in Punto Fijo, Venezuela, Saturday, Aug. 25, 2012. A huge explosion rocked Venezuela's biggest oil refinery and unleashed a ferocious fire Saturday, killing over 20 people and injuring dozens in the deadliest disaster in memory for the country's key oil industry. (AP Photo/Diario EL Amanecer)

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

years.