Maj. Gen. Clear!” in the report. ea. “* 25 Novenber 1953 On the contrary, all evidence indicates that adequate samples were, in fact, obtained. Ivy experience (a) does not confira that sent sampling techniques are inadequate for sampling high yield weapons, ) does not give reliable informstion on cloud turbulence, and (c) does not show that the bulk of the boxb mxterial is carried into the stratosyhere. Furthermore, the author, on Page 10, restricts his analysis of- Bomb cloud dynamics to "detonations at some distances above the grouni", vhereas, the Mike shot was a surface shot. The statement made in the last sentence on Page 14 of the report that such boxb material may be carried up considerable distances into the stratoephere is very different from the statement that the bulk of the bomb Faterial is forced into the stratosphere. . 6. . The reader is cautioned to read the second conclusion under the heading “With Respect To Evidence From High Yiel@ Detonations" with the qualifications of the second and third sentences on Page 13 in mind. It 4s also constructive to compare the two reports of Mike veather given in Items 1 and 2 on Pages 16 and 17. as the following: The first report makes such statements "The general susceptibility of the atmosphere to con- vection fs illustrated by the reports of cumilus and towering cumlus clouds at both Eniwetok and Xvajalein as well as by reports of showers and light- © ning", The second report that "personnel in the WB-29 informed me that there vere only scattered low clouds in the vicinity of the atoll, whose bases were estimated near 1800 feet and whose average tops vere estimated to be near &,000 feet". Just why the author of the report chose to ignore the first of these reports, and base his conclusions completely on the second, is not clear from the report itself. The conclusions on Fage ii "With Respect to Certain Operational Problems” have been discussed above, however, it is worthwhile to point out that conclusion 2.b. on a high latitude, low stratosphere, continental, winter situation cannot be drawn from the experience of JIF-132 which was restricted to a low latitude, high stratosphere, mid-ocean, fall situation. On Page 1 of the report, the authors point out the fallacy of making operational decisions on the basis of ideas solely conceived from meteoro- logical experience obtained close to homs. In view of the knowledge of this pitfall, it is surprising that, in this last conclusion, they would be guilty of committing the same fallacy in reverse. Finally, it should be emphasized that, as stated on the title yece, this is a report to the Commander of the Tesk Force, not by him. As such, it represents the opinion of two individuals and should be given weight accordingly. In my opinion, the portions written by Dr. Palmer are excellent and should be accepted as authoritative. Unfortunately, Cdr. Pate failed to be objective in those portions attributable to him and, for this resson, much of his part must be heavily discounted. Original signed by ALVIN C. GRAVES ALViG C. GRAVES ACG: vw COPIED/DOE Enclosure (2) LANL RC Ta