Coal mine workers go underground at Qingshuiying Coal Mine in Lingwu City, northwest China's Ningxia Hui Autonomous Region, Feb. 18, 2018. A special team worked in the 800-meter-deep coal mine to guarantee the production safety during the Spring Festival holiday. (Xinhua/Wang Peng)
Coal mine workers work during Spring Festival to guarantee production safety
Source: Xinhua| 2018-02-19 14:47:44|Editor: pengying
