Algerian president Abdelazziz Bouteflika (L) and Energy Minister Chakib Khelil tour the grounds of the vast petrochemical complex in the port city of Skikda January 20, 2004, following a huge explosion on Monday evening. Rescue workers searched through rubble for missing workers at Algeria's largest refinery and export port on Tuesday after a blast at a nearby liquefied natural gas (LNG) plant killed at least 23 people, including one French and one Turkish worker, officials said. REUTERS/Zohra Bensemra ZB/CRB