In 2000, he served as the manager of the Shinchang Coal Mine, and in January 2005, he was appointed as the Minister of Electricity and Coal Industry. but was demoted to Deputy Minister in May. In October 2006, when the Ministry of Electricity and Coal Industry was separated into the Ministry of Electricity Industry and the Ministry of Coal Industry, it was revealed that he had been appointed Minister of Coal Industry in September 2007, serving until October 2011. In September 2010, following the
3rd WPK conference he was elected a member of the
6th Central Committee of the Workers' Party of Korea. In April 2009
he was elected to the
12th convocation of the Supreme People's Assembly.. ==References==