Passengers are seen after they escaped from the Shidaoshan Tunnel in which a minibus exploded, on the expressway between Hefei and Wuhu, in East China's Anhui Province, May 31, 2007. The minibus caught fire and exploded while traveling in the 1,100-meter tunnel, halting traffic for half an hour. Several people were treated for smoke inhalation. [Jianghuai Morning News]

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