smelting and alloying plant has been condemned for releasing toxic dust over neighboring communities including offices, schools, homes, and businesses. The product of filters unreplaced since its construction in 1983, residents from the nearby community report high rates of birth defects, dermatitis, and respiratory disease contributing to an average life expectancy short of mid-50s. The "Class 1"-designated factory manufactures aluminum for North Korean missiles and centrifuges. Transport The Pyongdok Line and Its branches, the Tukchang Line and Taegon Line passes through the county. Roads connecting Pyongsong and Hamhung, Kumya and Pukchang, Tokchon and Pukchang run through the county. References External links Map of Pyongan provinces Detailed map Counties of South Pyongan