REPROOLCED AT THE NATIONAL ARCHIVES a August 4, 1947 MEMORANDUM for the Commissioners. ’ From: 409303 }2 Director of Military Application Subject: Final Report of the JCS Evaluation Board for Uperation CROSSROADS The report of the Evaluation Board has been reviewed in the Division of Military Application, and it is recommended that the following Geletions be required: Page 14 - Paragraph 10 Page 19 - Paragraph 4 Page 23 ~ Paeragreph 12, Lines 4-7 ag marked Page 24 - faragraph 10, Lines 4, 5, 6 as marked Page 31 - Paragraph 16 Page 38 - Paragraphs 5 and 4 These deletions are recommended because thoy refer to long range detection, which it is considered should remain highly classified, or to specific technical information of a highly classified nature, Previous JCS Evaluation Board reports do not contain damage data in « manner revealing distance versus specific damage. Instead, the extent of the damage 1s given in general terms such as “heavy”, “moderate”, and “negligible”, Throughout this final Board report, however, distances and extent of damage are related precisely. In addition, paragraph 13, pege 30, gives data on the srea of the lothal mist to be expected in an underwater explosion, It ia considered that this type of information-~the effects of the atomic boeb--pertains to the “utilization of atomic weepons" /Section 10(b)(1)% If this data is of a classified nature and cannot be published, then according BEST COPY AVAILABLE INED TO BE &N STRATIVE MARKENG 5, Section 6-10 7 —PKRS pavogiit.