ATTACHMENT 2

            
                                                  DNA1.950425.002
ACHRE Request 032795-A, HumRRo Questionnaire and Air Burst
Material

Question.  We enclose 1) The 1951 HumRRo psychological testing
questionnaire, and 2) a 1951 memo which makes statements about
the risk from an airdrop.  We would appreciate it if you could
have these material(sic) reviewed by appropriate experts and let
us know if the answers given in the questionnaire and the
statements regarding the effect of an airburst are, based on
DOD's current understanding, still correct or whether (and how)
modification might be needed.

Answer 1: Regarding the technical portion of the questionnaire,
we would make the following changes/corrections/clarifications:

II.  Troops' Information on Atomic Warfare and Weapons

1)  As stated, the answer is wrong.  The ground zero hazard 1 day
after an atomic explosion depends on the yield.  At 20 kt, there
would be no fallout for a burst at 2000 feet, but there would be
induced activity.

6) There is the same problem with this answer as with 1., above.

7) This is a bad question, in that it doesn't distinguish between
ionizing and thermal radiation.  For ionizing radiation alone,
the answer is correct.  If thermal radiation is included, the
answer is not correct from a technical perspective.

8)  This answer is incorrect.  Current understanding is that the
correct answer is blast effects of all kinds and burns.

10) This answer is incorrect as given.  The correct answer is
"surface bursts".

11) This answer is incorrect.  The correct answer is "one mile". 
(ref. Effects of Nuclear Weapons (ENW) p. 559)

14 g.) This answer is correct as given.  There would be no
fallout, however there could be (and there was at Hiroshima) some
neutron activation of the soil in the immediate vicinity of the
actual ground zero. 

14 m.) In the strictest sense, the correct answer is "true". 
Some permanent retinal damage will occur, but complete vision
loss will not.  (ENW p. 573)

APPENDIX A TO ATTACHMENT 1


Answer 2: Regarding the memorandum from the Chairman, Armed
Forces Medical Policy Council, we would not be so absolute in our
conclusions without specifying the yield, height of burst, time
after explosion, and transportation, as well as defining the
"burst area" to be used for the exercise.