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 analyses results of 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.
                                                    (Previously announced)

On May 18th, 2011, we conducted nuclide analyses of radioactive materials
contained in the air which was collected at the site of Fukushima Daiichi
Nuclear Power Station on the same day. As a result, some radioactive
materials were detected as described in the appendix. Accordingly, today
we have summarized the results and reported them to NISA and the
government of Fukushima Prefecture.

We will continuously conduct the same sampling surveys. 

Appendix1: Result of Nuclide Analysis of Radioactive Materials in the 
           Air at the Site of Fukushima Nuclear Power Stations 
                                                             (PDF 52.4KB) 
Appendix2: Fukushima Daiichi Nuclear Power Station: The Result of the 
           Dust Nuclide Analysis(PDF 34.6KB) 
Appendix3: Fukushima Daini Nuclear Power Station: The Result of the Dust 
           Nuclide Analysis(PDF 35.7KB)