In literature, it has been widely accepted that knowledge management (KM) success ratio in private companies depends on the corporate size and type of industries. However, there are few studies concerning the procedures about building knowledge management system in state-run corporations. Especially, as the Korean Government advocated the slogan saying The Strong Nation with Knowledge and Information, the need to investigate the knowledge management case about state-run corporations instead of private companies becomes more urgent. In this respect, this paper is aimed at introducing how knowledge management system has been successfully incorporated in KAMCO, and summarizing several fact findings which are deemed noteworthy for other similar studies.