석탄공사 초기 사진
  • 1950 Established KOCOAL
  • 1953 Started maritime transportation
  • 1957 Established Technical Training
    Center to educate human
    resources and research technology
  • 1961 Supported Private Mine
    Development
  • 1967 Purchased Najon and Sungjoo mines
  • 1969 Completed Jang Seong mine shaft
  • 1976 Started coal import
  • 1981 Achieved 100 million tons of
    coal production,
    Constructed coal storages
  • 1988 Produced record high 522 million tons
  • 1990 Sold Najon and Youngwol mines &
    Closed Sungjoo mine.
    Raised capitals to 450 billion won
  • 1993 Closed Hambak mine, Closed Hong Kong and Kwangjoo branches
  • 2001 Reduced capitals to 448.3 billion won,
    Published 50 years of KOCOAL history
  • 2003 Produced 1.229 million tons
  • 2005 Started business diversification: overseas development and clean coal technology development
  • 2007 Moved main building to Uijeongbu City
    Produced 1.382 million tons
    Achieved 180 million accumulated tons
  • 2010 Celebrated KOCOAL 60th Anniversary
석탄공사  역사 사진