Photo taken on Feb. 20, 2012 shows a part of the exploded tank truck in the Xigu District of Lanzhou, capital of northwest China's Gansu Province. A tank trailer carrying 58 cubic meters of liquefied petroleum gas exploded near an LPG station in the Xigu District of Lanzhou on Monday morning. A chemical worker died in the accident, local authorities said. [Xinhua/Zhang Meng]