Attachment 2


31 July 1953 L-8822

Dr. Forrest Western
Biophysics Branch
Division of Biology and Medicine
U. S. Atomic Energy Commission
Washington 25, D. C.

Dear Dr. Western:

We wish to thank you very much for your participation in the 
conference at RAND 21-23 July 1953.

Pending a re-evaluation of the classification policy for this 
project by the AEC, it has been requested that the existence of 
the project and the conference itself should not be revealed to 
anyone other than those who have been contacted officially in 
connection with the project.

The letter of invitation or any document in your possession which 
pertains to the nature or content of the conference should be 
classified at least "Secret - Security Information" or returned 
to this office by registered mail.

Very truly yours,

Ernest H. Plesset
Nuclear Energy Division