| CHAPTER 5 GAMMA-DOSE RATES t Gamma-dose rates at 3 ft above ground were determined with AN/PDR 27 C survey meters. Specific locations which had been monitored on earlier surveys were resurveyed whenever they could be located. General surveys were run on all islands. A linearity calibration was carried out on the instruments with a 93.53-mg Ra source.” Low intensity Cs'3’ standards were carried in the field in order to maintain a continual check on the behavior of the instruments. 5.1 RESULTS AND DISCUSSION 5.1.1. . General Surveys Table 5.1 contains the gamma-dose rates found on the islands surveyed. These data are reported as of 11 months post-detonation. TABLE 5.1 Average Gamma-dose Rates on Islands Atoll Likiep Utirik Bixar * Island Likiep Utirik Gamma-duse Rate (mr/hr at 3 ft) 0,04 0.14 Eikar 0.27 Rot erik Eniwetak 0.7 Rongelap Ron geiap Rouigelap Busen 0.7 0.3 Rougelap Eniaetok 2.4 Roagelap Labaredj 3.0 Rongelap Rorgelap Kabelle Lukuen 4,2 4.8 Roageiap Ronge lap Gejen Lomiilal 5.4 5.8 Made available by the Radiclsgi al Sifety Section, Atomic Energy, Commission, at the Pacific Proving "8 Ground:, -23- ae ae als’ : .v oy