DISCLAIMER The following is a staff memorandum or other working document prepared for the members of the Advisory Committee on Human Radiation Experiments. It should not be construed as representing the final conclusions of fact or interpretation of the issues. All staff memoranda are subject to revision based on further information and analysis. For conclusions and recommendations of the Advisory Committee, readers are advised to consult the Final Report to be published in 1995. TAB F-1 þþþDRAFT þ FOR DISCUSSION PURPOSES ONLYþþþ MEMORANDUM TO: Members of the Advisory Committee on Human Radiation Experiments FROM: Advisory Committee Staff DATE: 05/22/95 RE: Human Experimentation at Atomic Bomb Tests/ Army Proposal to Expose Human Volunteers to the Point Needed to Determine the Threshold of Injury In prior briefing books we have presented documents relating to the overall program of human experimentation in connection with bomb tests. These documents show, among other things, that tests in Nevada were used to test the psychological and physiological reactions of soldiers to the detonations. In general, the prior documentation indicate that, from the experimenters' perspective, the safety restrictions were such that there little chance of injury (at least acute injury) to the participants. Documents recently provided by the Defense Nuclear Agency (DNA), however, show that the Army actually proposed to expose human volunteers to the point needed to determine the threshold of injury from the blast. This proposal was evidently vetoed by the DNA's predecessor (the Armed Forces Special Weapons Project (AFSWP)), which urged that laboratory experiments be undertaken instead. Attachment l is a November 1955 memorandum to the Army Chief of Research and Development on a "Proposed Project Regarding Blast Injury Evaluation." The memorandum explains that "a requirement has been established fior a thorough investigation of the mechanisms of blast injury. . ." The memorandum notes that "[i]njury criteria established by tests on dummies and animals. . .should be validated by human tests to insure their reliability." The memorandum proposed that: "Volunteers in foxholes and prone on the surface of the ground can be exposed to low levels of blast and thermal effects until thresholds of intolerability are ascertained." Interestingly, the memorandum explained that "[s]uitable choice of yields would eliminate excessive nuclear radiation exposure." 1 The memorandum noted that the officer volunteers who had participated in the Desert Rock VI exercises "concurred in the recommendation that this program be continued and that the participants be closer to ground zero in the near future." The Army recognized that "inherent dangers will necessitate a gradual approach to the threshold of intolerability of effects." It therefore proposed stretching the experiments out over several tests, beginning at the next test (Redwing), which was scheduled for the Pacific testing grounds. Attachment 2 is a January 20, 1956 Memorandum from AFSWP to the Army Chief of Research and Development. AFSWP pointed out that it would be infeasible to conduct the tests in the Pacific, that the rules governing tests in Nevada "preclude obtaining any more information on the subject than is already available," and, therefore, recommended laboratory testing instead. Interestingly, the AFSWP memorandum distinguished its comments on the proposal from its views on the exercises that had been ongoing at Desert Rock: The foregoing is in regard to a scientific program and is not related to volunteer participation conducted for the purpose of indoctrination and training, such as was done in Desert Rock V and VI. It must be pointed out, however, that the results of these exercises cannot be expected to produce data of scientific value. Attachment 3 is a "Detailed Explanation of AFSWP Comments on Feasibility of Human Volunteer Program." The analysis stated, among other things: a. In order to gain scientific data of value by the use of human volunteers, these volunteers would have to be exposed to successively higher levels of the various effects (blast, thermal radiation, and nuclear radiation) singly and in combination. It is evident that the injury threshold cannot be determined without eventually exceeding it. b. In particular, it is significant that the long range effect on the human system of sub-lethal doses of nuclear radiation is an unknown field. Exposure of volunteers to doses higher than those now thought safe may not produce immediate deleterious effects; but may result in numerous complaints from relatives, claims against the Government, and unfavorable public opinion in teh event that deaths and incapacitations occur with the passage of time. 2 LIST OF ATTACHMENTS ATTACHMENT 1 November 15, 1995 memo to the Army Chief of Research and Development on a "Proposed Project Regarding Blast Injury Evaluations". ATTACHMENT 2 January 20, 1956 Memorandum from AFSWP to the Army Chief of Research and Development. ATTACHMENT 3 Memorandum titled "Detailed Explanation of AFWSP Comments on Fesibility of Human Volunteer Program" (undated)