- 35 9. wi85 contamination on plant leaves and in the soil at Ujelang Atoll was low in comparison to that at Eniwetok Atoll 10. The level of wi85 on Scaevola leaves at Rongelap Atoll on August 8, 1958, was higher than that at Nan Island (Bikini), Keith, Henry, and Leroy Islands (zniwetok) and Ujelang Atoll. li. wi85 was not detected in the internal parts of any of the plant samples examined in this survey.