panna eT fore concentrated on those populated atolls indicatirg mare than 10 ur/hr at E plus 24 hours and which were not evacuated. For this pure cw pose a special survey was set up under the technical direction of Dr. Thomas N. White, H Div, LASL, assisted by Major Robert Crea, By JTP SEVEN, to start from Ewajalein on 5 Marck by FSM. Following the survey under Dr. White end Major Crea, the next The investigation included ground monitoring and the taking of soil and water samples from living ereas, Secondary purposes were efforts to reduce the adverse impact on real and personal property of the basty departure, to determine radiation data of scientific interest ani to eveluate the time of reoccupancy by the former inhabitants. This effort was assigned to a destroyer in order that working parties would have a floating base for operations ashore and decontamination facile ities afloat. The technical direction of the effort was placed unier rr effort was directed toward acquiring data on the evacuated atolls is order that the effects of the radietion could be better evaluated. ( Nea the supervision of Dr. Earbert Scoville, Technical Director, irued Forces Special Weepons Project, assisted by representatives of CASTLE Project 2.5a. The rehasbilitetion partion of the effort was placed under the supervision of the commanding officer of the destroyer. The party with equipment departed 7 March for Kwajalein to join with the Trust Territory representative in a FEN rendezvous with the destroyer at Rongelap early morning of 8 March, tion Mr. Merril Eisenbud. Mr. Msenbud was requested to provide the task force with decay information and activity per unit area on the soil samples and activity per unit volome on the water samples. He was also requested to make such other analysis as he thought neces- sery considering the umsual circumstances and interest in BRAVO Evest. Detailed reports by Dr. White, Dr. Scoville and Major Crea heve- been distributed separately to interested agencies. Contiming surveys of the evacuated atolls have been made far picking up of eninals for ned- fecal studies, rehabilitation and for studies of marine life. Reports on these activities will be included in the above distribution as they becone available. Z ,J ° oF 6 Inel 1. RadSefe factors Considered at the Wea RadSafe Command Brief- RICEARD &. BOUSE Lt Celenel, USAF EY Cc) Arrangements were made to air ship soil and water sazples to Health and Safety Laboratory, AEC, New York Operations Office, Atten- Chief, Tech Ops Brench, J-3 2. Meno for Record: with 6 Incl covering RadSafe Eriefing material as presented at Cod Briefings for BRAVO. 3. Discussion of Off-Site Fall-out. . 4 Cloud Tracking Operetions. 5. Mi: Protection of Transient Shipping During Operation CASTLE. 6, Analysis of Fall-out Following BRAVO Event with 4 Incls | Se neni -+ Se .