- 20 - 150 wi8s { .055 V0 L A 130 & 120 F 110 Il. A - Belle Scaevola leaves 100 - June 20, 1958 B - Belle Scaevola leaves Activity May 10, 90 - 1958 80 O t 6 Lae L Cel4tlppl4i cel44 ppl 44 a3 2134 *] ¥ 145 50 LI ’ ho LI 30 R203pn103 RylO6py,106 ZrO 5Onb95d -76 + 498 2515 20 10 Fig. 6. Gamma spectrum curves of Scaevola leaves collected at Belle Island on May 10, 1958, prior to the wi85 contamination and of those collected on June 20, 1958, after contamination. only Cs157-Bal37, The earlier samples contained _ On Qo