Five days ago, in the northeastern port city of Dalian, China, two oil pipelines exploded, sending flames hundreds of feet into the air and burning for over 15 hours, destroying several structures - the cause of the explosion is under investigation. The damaged pipes released thousands of gallons of oil, which flowed into the nearby harbor and the Yellow Sea. The total amount of oil spilled is still not clear, though China Central Television earlier reported an estimate of 1,500 tons (400,000 gallons), as compared to the estimated 94 - 184 million gallons in the BP oil spill off the Louisiana coast. The oil slick has now grown to at least 430 square kilometers (165 sq mi), forcing beaches and port facilities to close while government workers and local fishermen work to contain and clean up the spill. ( 29 photos total