On March 22nd, 2011, as a part of monitoring activity of the surrounding 
environments, we conducted nuclide analyses of radioactive materials 
contained in the air which were collected at the site of Fukushima Daiichi 
Nuclear Power Station, which was damaged by the 
Tohoku- Chihou-Taiheiyou-Oki Earthquake. As a result, radioactive 
materials were detected and therefore, we summarized the results and 
reported them to Nuclear and Industry Safety Agency (NISA) as well as to 
the government of Fukushima Prefecture.

The three nuclides (Iodine-131, Cesium-134 and Cesium-137) are to be 
released as fixed figures, and the other nuclide figures are to be 
revaluated in accordance with the preventive measures formulated after the 
warning from NISA on April 1st.
                                                    (Previously announced)

On April 20th, 2011, we conducted nuclide analyses of radioactive 
materials contained in the air which were collected at the site of 
Fukushima Daiichi Nuclear Power Station on the same day. As a result, 
radioactive materials were detected as described in the exhibit. 
Accordingly, on April 21st, we have reported the result of the analysis to 
NISA and the government of Fukushima Prefecture.

We are planning to conduct these surveys continuously. 

Appendix: The result of the nuclide analysis of radioactive materials in 
          the air at the site of Fukushima Nuclear Power Station 
                                                               (PDF 10.9KB) 
Appendix: Fukushima Daiichi: the result of the dust nuclide analysis 
                                                               (PDF 13.3KB) 
Appendix: Fukushima Daini: the result of the dust nuclide analysis 
                                                               (PDF 13.7KB)