DRAFT 21 local population in the populated islands near the PPG and members of the task force.'™ 25 Jun 57 RADIATION A radiological survey of the gammalevels on Rongelap|Island shows the average gamma dose rate as 0.26 roentgens per year.’ 29 Jun 57 RELOCATION The Rongelapese are returned to their home island.’ 7 Apr 58 WEAPONTESTING The AEC commissioners decide not to conduct two very ighaltitude firings of nuclear weapons at Enewetak Proving Ground because the AEC cannot assure absolutely that the Marshallese would receive no eye damage fromthelight resulting from such detonations.'”” 1 May 58 RADIATION As part of the Hardtack tests operation in the Pacifi¢, the task force radiological safety office is prepared to warn, advise, and help inifabitants in taking Safety measures in case of significant fallout in an inhabited afea. The office’s monitors also have trained Marshallese medical practitioners and hqalth aides in basic emergency measures.’” 6 May - 19 Aug 58 WEAPONTESTING The U.S. conducts nuclear weapon tests in Operation Hardtack | at Bikini, Enewetak, and Johnston Island.’ 31 Oct 58 WEAPON TESTING In a moratorium, the United States, Great Britain, and the USSR suspend nuclear weapontesting. '*° Mar 59 CONTRACTOR MEDICAL RADIATION A BNL team conducts the regular annual medical survey of the Rongelapese and finds no ilinesses or diseases directly associated with fadiation effects. Preliminary results suggest a "slight lag” in growth and development of exposed children, blood platelet levels somewhat below the unexposed popplation but within normal range, and increases, though within permissible levels, infbody burdens of cesium'”, zinc*, and strontium”, attributed to living on "the slightly contaminated island of Rongelap.""*' 21)