LLG. LAs Bd Corporate Source: MD (USA) Publication Date: Report Number(s): Note: Gavi Pas Lava Ovl-uuUntooe. tSpyil essa Chemical and Radiological Labs., Jun 1953 Army Chemical Center, p 169 AD-363630/5/XAB Report on Operation Ivy, Document Type: Report Language: English Journal Announcement: EDB8608 Project 5.4B Availability: NTIS, PC A0Q8/MF AOl. Subfile: ERA (Energy Research Abstracts). Country of Origin: United States (U) GRA (NTIS NTS) Country of Publication: United States Abstract: The major objectives of Project 5.4b were to conduct the following studies in connection with the surface detonation of a thermonuclear device and an airdrop high-yield fission bomb: (1) To determine the fallout pattern with its characteristics of activity, particle size, and radiochemical content on the land areas at Eniwetok Atoll; and (2) To determine the rate of fallout at various locations on Eniwetok Atoll during the first 6 1/4 hr after each shot. The objectives were accomplished by (1) sampling the fallout with intermittent-fallout collectors, trays, wash tubs, and Tracerlab air monitors and by. (2) analyzing the particulate matter for activity, decay, particle size, and radiochemical content. Major Descriptors: *ATMOSPHERIC EXPLOSIONS -- IVY PROJECT; *IVY PROJECT; *NUCLEAR EXPLOSIONS -- ATMOSPHERIC EXPLOSIONS Descriptors: FALLOUT; GROUND LEVEL; MICRONESIA; PARTICLE SIZE; PARTICLES; SAMPLING Broader Terms: EXPLOSIONS; ISLANDS; LEVELS; NUCLEAR EXPLOSIONS; OCEANIA; SIZE Subject Categories: 450202* -- Explosions & Explosives -- Nuclear -Weaponry -- 10/5/563 01836082 Author(s): Milne, (-1989) (Item 263 from file: 103) BRA-11-051886; EDB-86-159964 Bigger, W.L. M.M.; Gong, J.K.; Kawahara, F.K.; Fuller, R.K.; Title: Shipboard contaminant ingress from underwater bursts. Final report Corporate Source: Naval Radiological Defense Lab., San Francisco, CA (USA) Publication Date: 15 Dec 1961 p 130 Report Number(s): AD-357955/4/XAB Note: Report on Operation Hardtack, Proj. 2.2 (U) Document Type: Report Language: English Journal Announcement: EDB8608 Availability: NTIS, PC AOQ7/MF AOl1. Subfile: ERA (Energy Research Abstracts) GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: For the target destroyers moored in the downwind sector of the base surge, fallout, or cloud after Shots Wahoo ventilation systems open was concluded that: (1) (but fans secured) the doses due to the and Umbrella, with and boilers operating, it ingress of contaminants were secondary to the doses due to transient radiation sources exterior to the ship; (2) the dose due to radioactivity deposited in the body was always insignificant compared to the total exposure dose; (3) no dose due to the ingress of contaminants was of a magnitude that would result in casualties or any reduction in combat effectiveness to personnel; (4) if shielding were provided to reduce the dose due to exterior transient radiation sources for operations in the base surge, cloud, or Fallout, then the doses due to the ingress of contaminants would require consideration under any concept of dosage control for _ repeated exposures. Major Ba yet rs: Uéded *HARDTACK PROJECT; *NUCLEAR EXPLOSIONS -- UNDERWATER