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Monitoring | A technician monitors the air quality as a fire at Qionglai-1 gas well of China National Petroleum Corporation (CNPC) is brought under control in southwest China's Sichuan Province on December 22. One person remains missing and four sustained light injuries. The gas released in the accident did not contain toxic hydrogen sulfide, and evacuated residents have returned home, according to CNPC (XINHUA) |
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