Daily NK Moon Sung Hwee 11/1/2007 A source familiar with issues inside North Korea said on the 30th, “Most of the underground tunnel of Hyesan Youth Mine in Yangkang Province is now under water.” The source added, “Ever since Samsoo Hydroelectric Power Station started filling up the dam last year, the mine began to flood, … Continue reading Hyesan Mine, the Center of Copper Production Is Flooding!