In this photo released by Greenpeace, a firefighter who was submerged in thick oil during an attempt to fix an underwater pump is brought ashore by his colleagues in 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)

Photo by: Jiang He

In this photo released by Greenpeace, a firefighter who was submerged in thick oil during an attempt to fix an underwater pump is brought ashore by his colleagues in 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)