Long - Range Fission Fragments from Radiogemc Lead ?

Fission tracks with a range 19% longer than tracks produced by uranium fission fragments were observed on mylar foils after a three year underground (100 m w. e.) exposure to 3600 cm2 of radlogemc lead. Ordinary lead which was simultaneously exposed to mylar foils under the same conditions yielded a background effect of only 3% of the effect from radiogenic lead. The observed long-range tracks are best explained as resulting from the spontaneous fission of natural, superheavy elements in the suggested element 114 stability region which were coprecipitated with the radiogenic lead. Most likely they are created by a decay chain starting in the pro'posed Z= 124 to 126 region from a superheavy element which chemically follows uranium.