Kwajalein, Marshall Islands: 509th Composite Group, Headquarters, Office of the Deputy for Operations, 1946. Presumed first Edition, First printing thus. Stapled at upper left corner. 2 sheets, approximately 8 inches by 10.5 inches, printed on one side only. Stapled at the top left corner. This is an incredibly rare and significant item of Atomic Weapons Testing ephemera, connected with both the 509th Composite Group and Operations Crossroads. This document is dated 25 Jun 46 and appears to be part of the planning for Operation Crossroads. It appears to be a mimeographed copy. The first page is text and the second has two circular diagrams. Example 2 RDS 190 degrees T through 310 degrees T. Example 2 RDS [unclear] through 280 degrees T. Example 2 NOTE King Flight Rendezvous at 26000 and Execute Plan Baker Immediately. Pare one has a NOTE at the bottom that says "In original SOP dated 22 Jun 46 paragraph two line three, cross out the word FOX and substitute the word DOG. 1. This appendix sets down the method of determining where Jig and King flights rendezvous. The change from the original fixed rendezvous point system is necessary because any predetermined fixed point may possibly be with the RDS and so be unsuitable for rendezvous. 2. B-29's Antique 1 and 3 will proceed to original rendezvous points and hold there until Mike plus six at which time they will proceed to the new rendezvous points....Jig flight will always rendezvous north of an East Weat [sp? West] line through the target and King flight south of the same line....3. The legs of the first elliptical pattern which Jig and King fights take up will be parallel to the apparent movement of the highest portion of the cloud.
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Washington DC: United States, Department of the Army, Headquarters, 1955. Presumed First Edition, First printing. Wraps. i, , 59,  pages. Figures (including fold-out). Sketch map. Index chart to damage estimation charts and nomographs. Cover has some wear, and soiling/staining. Marked For Official Use Only, but this limitation is understood to no longer apply. This pamphlet provides an unclassified basis for the utilization of atomic weapons in courses at the various schools and in training. The effects data herein are based primarily on the unclassified data contained in The Effects of Atomic Weapons and in Radiological Defense, Volume II, but also on other unclassified sources. The methods of casualty and damage estimation herein have been so designed as to provide an understanding of the role of target analysis in the tactical use of atomic weapons without at the same time burdening nonspecialized students with the details of a comprehensive target analysis. It is intended that this text be utilized for classroom purposes. The text has been reviewed by Headquarters, Armed Forces Special Weapons Project. The damage estimation system it contains is based on certain material produced by the SANDIA CORPORATION.