The July-August 2015 coal mining and coal ash disaster in Vietnam occurred in late July after heavy rains resulted in the major flooding flooding in Quang Ninh province. Major coal mines were flooded, a coal mine tailings dam burst, major roads in mines and connecting the mines to ports were damaged as were some coal port facilities. The breach of 'dam 790' resulted in coal mine tailings flooding through Cam Pha City with residents being evacuated. The coal mines and power stations are in close proximity of the Ha Long World Heritage site, with water pollution from the mines likely to affect the area. (2) Heavy rains and flooding caused much damage in 2015 in Northern Vietnam’s coal area, where most of the coal output of the country is produced. It was reported on Sept 11, 2015, that most of the Viet Nam Coal and Mineral Industries Group's (Vinacomin) 85,000 coal miners in coastal Quang Ninh Province resumed work after damaging torrential rains in July. The miners in Cam Pha and Ha Long cities, were still dealing with flood's aftermath and have yet to return to work. Ong The Minh, deputy director of the Ha Tu Coal Company under Vinacomin, said: “"We are draining off water and mud from mining field and expect to restart coal extraction in the dry season". After the incessant rains, two of the Ha Tu Coal Company's mines were completely submerged.