In this photo taken Wednesday, July 21, 2010, workers move a bag on the beach polluted by crude oil after a pipeline explosion in Dalian in northeast China's Liaoning province. China National Petroleum Corp. said Thursday a vital pipeline has resumed operations after the explosion caused the country's largest reported oil spill. (AP Photo)

In this photo taken Wednesday, July 21, 2010, workers move a bag on the beach polluted by crude oil after a pipeline explosion in Dalian in northeast China's Liaoning province. China National Petroleum Corp. said Thursday a vital pipeline has resumed operations after the explosion caused the country's largest reported oil spill. (AP Photo)