Чулуулгийг бутлах бутлах алх хэд вэ. slag cemen Бутлах тоног төхөөрөмж . The Luotuoshan coal mine flood was an incident that began on Monday, March 1, 2010, when a large amount of water flooded the Luotuoshan coal mine near the city of Wuhai in the Inner Mongolia Autonomous Region of the People'''''s Republic of China.A total of 77 workers …