Attachment 11


				UNITED STATES
			  ATOMIC ENERGY COMMISSION

                                 
AECK-81

					     Oak Ridge, Tennessee
					     March 21, 1947


Dr. A. H. Dowdy
P. O. Box 287
Crittenden Station
Rochester 7, New York

				   


Dear Dr. Dowdy:

Subject:   RECLASSIFICATION OF DOCUMENTS

	1.   Reference is made to the letters from Lt. Col. Ralph E.
Gates of the Publication Section to your office, dated August 28 
and August 29, 1946, declassifying the following documents:

	"Catalasuria as a Sensitive Test for Uranium Poisoning,
	 Chapter XIV of the Pharmacology and Toxicology of
	 Uranium Compounds," by A. L. Dounce, Eugene Roberts,
	 and J. H. Wills.


	"Studies on Human Exposures to Uranium Compounds, Chapter XVI 
of the Pharmacology and Toxicology of Uranium Compounds," by J. W.
Howland.

	2.  This office has been notified that these documents may
involve matters prejudicial to the best interests of the Atomic
Energy Commission in that experiments with humans are involved.  At
the request of the Medical Advisors to the Commission, we are,
therfore, asking that the documents be reclassified as "Restricted."

	3.  We will undertake to notify all recipients of declassified 
copies of the documents distributed by the Report Section, Research
Division, of this change in classification.  It is requested that all
other recipients of such declassified copies be likewise notified
by your office.

	4.  It is hoped that definite policy in this matter will be
announced and explained in the near future.  Until that time, it is
possible that complete declassification of similar papers will be
refused.

	5.  We appreciate your cooperation in this and other matters.


					 Very truly yours,

				    ATOMIC ENERGY COMMISSION


				 	RICHARD T. BATSON
				     Major, Corps of Engineers
				    Declassification Officer
				    Research Division, Field Operations

Cc:  Maj. Richard M. Brundage
     Dr. A. F. Thompson
     Mr. R. A. Anderson
     Mr. H. F. Carroll
     Area Manager, MSA