We have been evaluating exposure dose of workers at Fukushima Daiichi 
Nuclear Power Station in the two categories, which are "Internal exposure 
dose" and "External exposure dose".

We have sequentially submitted interim reports to Ministry of Health, 
Labor and Welfare on the following items when each reporting due date 
comes, and have made announcements.
 (a) Evaluation results of internal exposure dose from March to September 
     (16,916 persons. Remaining 173 persons including 16 persons whose 
     contact information was unknown will be evaluated hereafter.)*1
 (b) From (a), detailed evaluation*2 results of internal exposure dose for 
     workers with the aggregate evaluation of internal and external 
     exposure dose over 250mSv (6 persons)
 (c) From (a), evaluation results of internal exposure dose for workers 
     with evaluation of internal exposure dose over 20mSv (351 persons, 
     including 6 persons in (b))
                                      (Previously announced on October 31)

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We would like to announce that we have compiled the following two issues 
and reported to Ministry of Health, Labor and Welfare today.
 (1) Evaluation status of internal exposure dose (Refer to Attachment 1 of 
     the Exhibit)
  - The number of workers who are not finished evaluation of internal 
    exposure dose from March to September became 48 persons from 173 
    persons as of October 31. The evaluation results of workers who 
    finished evaluation this time are as follows.
        Over 20mSv   1 person
  - The number of employees newly engaged in the work on October was 870, 
    and the maximum external exposure dose was 21.43 mSv.
  - The number of employees who finished evaluation of internal exposure 
    for October was 809, and the results are as follows. Also there are 61 
    persons to be evaluated hereafter.
        Over 20mSv   0 person
 (2) Regarding the investigation on the workers whose contact information 
     is not identified
  - We reported it as per Attachment 2 of the Exhibit.
 (3) Regarding the measures for wearing respiratory protective equipment. 
  - We reported it as per Attachment 3 of the Exhibit.
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In addition, we are planning to report to Ministry of Health, Labor and 
Welfare as follows. 
  - Evaluation results of internal exposure dose of the workers who are 
    not finished evaluation from March to October and November (December 
    28)
  - Progress status of the investigation for the workers whose contact 
    information are unknown (December 28)

*1 The number of the evaluated from March to September as of October 31

*2 Detailed evaluation of internal exposure dose
Regarding the evaluation of internal exposure dose, firstly, a measurement 
of the amount of residual radioactive material by whole body counter (WBC) 
installed in Hirono football ground nearby J-VILLAGE will be conducted. 
When the result of the measurement exceeds 20mSv, as detailed evaluation, 
re-evaluation specifying irradiated date based on interview, etc. or 
detailed measurement by using WBC of Japan Atomic Energy Agency (JAEA) 
intended for detailed examination will be conducted. The evaluation result 
may be reviewed depend on the evaluation progress. 

<Exhibit>
Exposure dose of workers engaged in emergency work at Fukushima Daiichi 
Nuclear Power Station and related matters (PDF 41.0KB)