Resucers carry the water pumps at Zhaojin Coal Mine in Yaozhou District in the city of Tongchuan, northwest China's Shaanxi Province, April 25, 2016. Eleven miners were missing in the coal mine flooding accident Monday. Fifty-six of them managed to escape and rescuers were rushing to find the missing. (Xinhua/Shao R

Rescue mission continues at Zhaojin Coal Mine in Yaozhou District in the city of Tongchuan, northwest China's Shaanxi Province, April 25, 2016. Eleven miners were missing in the coal mine flooding accident Monday. Fifty-six of them managed to escape and rescuers were rushing to find the missing. (Xinhua/Shao R

Photo taken on April 25, 2016 shows the Zhaojin Coal Mine in Yaozhou District in the city of Tongchuan, northwest China's Shaanxi Province. Eleven miners were missing in the coal mine flooding accident Monday. Fifty-six of them managed to escape and rescuers were rushing to find the missing. (Xinhua/Shao R

Rescuers make a downspout at Zhaojin Coal Mine in Yaozhou District in the city of Tongchuan, northwest China's Shaanxi Province, April 25, 2016. Eleven miners were missing in the coal mine flooding accident Monday. Fifty-six of them managed to escape and rescuers were rushing to find the missing. (Xinhua/Shao R