-- Radiation Effects on Animals -- Man Subject Categories: 560151* 290600 -- Energy Planning & Policy ~- Nuclear Energy INIS Subject Categories: C1500* -- Effects of External Radiation on Man F1400 -- Social Impact of Nuclear Science & Technology 10/5/651 01522679 (Item 351 from file: 103) H ERA-10-010344; EDB-85-029444 Author(s): Smith, S.B. Title: Operation Crossroads. Atomic Bomb Tests. Volume 2, Appendix V. Final report of Army ground group ‘ Corporate Source: Joint Task Force One, Washington, DC (USA) Publication-Date: 27 Sep 1946 p 139 Report Number(s): AD-367509/7; XRD-150 Note: See also Volume 3 Appendix 6, AD-367 508 Document Type: Report Language: English Journal Announcement: Availability: NTIS, EDB8412 PC AO7/MF AOl1. Subfile: ERA (Energy Research Abstracts). Country of Origin: United States Country of Publication: United States Abstract: With the exception of Searchlights and far Infrared devices (Penrod), Corps of Engineers Equipment will probably withstand the effect of an air burst of an atomic bomb of present design at a distance of 1000 yards. Improved resistance to blast can be provided by shock-mounting, shielding, and strengthening more fragile parts of equipment. Similarly, resistance to radiant heat can be provided by covering shielding, or by substitution of more heat-resistant materials. Lateral protection by employment of natural terrain or construction of revetments will reduce the radius of damage materially. The destruction of Corps of Engineers Equipment by use of an atomic bomb does not appear to be a profitable use of the bomb. Major Descriptors: *NUCLEAR EXPLOSIONS -- BLAST EFFECTS Descriptors: CROSSROADS PROJECT; ENGINEERING; SHIELDING Broader Terms: EXPLOSIONS; NUCLEAR BXPLOSIONS Subject Categories: 450202* -- Explosions & Explosives -- Nuclear -Weaponry ~-- (-1989) 10/5/652 01522678 (Item 352 from file: ERA-10-010343; 103) EDB-85-029443 Author(s): Frederick, J.D. Title: Operation Crossroads. Atomic Bomb Tests. Volume III. Final report of Army ground group Corporate Source: Joint Task Force One, Washington, DC (USA) Publication Date: 27 Aug 1946 p 342 Report Number(s): AD-367508/9; XRD-151 Note: See also Volume 2, Decument Type: Report Language: English Journal Announcement: Availability: Subfile: NTIS, ERA AD-367 508L ° EDB8412 PC Al5/MF AOl. (Energy Research Abstracts). Country of Origin: United States Country of Publication: United States Abstract: From detonation of this bomb at the particular height used, can be concluded that minimum horizontal range at which small, it rugged, well built equipments with little shielding will remain operable is between 500 and 800 yards. Large sets of the SCR-3999, SCR-584 class remain operative, especially with minor shielding, at 1200 to 1500 yards, Precision radar at this distance will need mechanical reorientation before accurate fire-control can be resumed. Medium size equipment will be little affected at ranges intermediate between those stated above. Major damage at the Able Test was blast inflicted with the heat flash producing less serious effects. Major Descriptors: Descriptors: *NUCLEAR EXPLOSIONS CROSSROADS PROJECT; -- BLAST EFFECTS SHELTERS =* od os <3