A column of smoke rises, a day after an explosion at Amuay oil refinery in Punto Fijo in the Peninsula of Paraguana

A column of smoke rises, a day after an explosion at Amuay oil refinery in Punto Fijo in the Peninsula of Paraguana August 26, 2012. REUTERS/Gil Montano

A column of smoke rises, a day after an explosion at Amuay oil refinery in Punto Fijo in the Peninsula of Paraguana August 26, 2012. REUTERS/Gil Montano