Staff workers of the local gas company close valves on a road section where a natural gas pipeline leakage accident happened in Lanzhou, capital of northwest China's Gansu Province, Oct. 25, 2013. The main natural gas pipeline buried under the road outside Gansu Institute of Public Administration ruptured due to improper construction around 4:40 p.m. Friday. No casualties were reported so far. (Xinhua/Chen Bin) |