Due to the catastrophe that occurred at the Fukushima Daiichi Nuclear Power Plant as a result of the Great East Japan Earthquake of March 11, 2011, and the accompanying tsunami, the "myth of nuclear power safety" collapsed. After a year Tokyo Electric Power Company (TEPCO) has released archives recorded on the videoconference system and now we can know "what was going on" at that time. Using these archives, we conduct the network analysis, text-mining and discourse analysis regarding what kind of discourses and actions were made on the cutting-edge of organizational crisis. There are the differences of usage of the words among the locations (Fukushima Daiichi, Head Quarters, Offsite Center), that means they could not share and/or construct the organizational reality about the ongoing crisis.
