wx V JOR TASK FORCE SEVEN U.S.5,. LT ut KINDY (acc-7) Flect Post Office San Francisco, California 20 May 1945 SUBJECT: Eniwetok Atoll - Radiolesical Status Report. TO: Cammarder, Joint Task Force SEVEN. 1, ALL islands of Eniwetox Ato’ vere surveyed for radioactivity during the reriod 17 to 19 Yay 19,0. uring Cpcrataon SANDSTONE much of the land miss of the Atoll was contaninated with significant amounts of radioactivity. For practical mu~ poses the degree of contamination is divided into four classes, A. Class I - Zero Islands. These are islands on which tests were conducted ani consequently have highly contaminated craters. The crater is defined as a disk shaped area, radius 400 yards, centered at the sero tover base, Tie three islands should be considered as uninhabitable for a period of years. Radiochemical analyses cf dirt samples would be required before considering any extensive re-use of these islands. Monitors should accompany any parties working in these craters, Class I Islands are as follows: Engebi B Class IT - Islands Heavily Contsminated fran Fall-out. Several islands doanrind of the zero islands were heavily contaminated by fall-out of radioactive materials follaring the various tests, Until final clearance, every sroup reentering these islands should be accompanied by a monitor. There should be no extensive ro-use or occupation until a thoroush and satisfactory ro~survey and radiocl.:mical amlysis has been con~ St gp te ee ne ee Aonan Runit ducted, Class II Islands ~ Yeiri Bokonaarappu Kirinian Musinbaarikku -~l- ~o=ae oS Piiraai Aaraanbiru Rojoa Biljiri