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Photo by: Jiang He

In this photo released by Greenpeace, a firefighter rush to aid his colleagues who ran into trouble amid thick oil cover as they attempted to fix an underwater pump in Dalian, China port of Dalian, China, on Tuesday, July 20, 2010. Crude oil started pouring into the Yellow Sea off a busy northeastern port after a pipeline exploded late last week, sparking a massive 15-hour fire. The government says the slick has spread across a 70-square-mile stretch of ocean. (AP Photo/Jiang He, Greenpeace)

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