 Several experiments studying the fission characteristics of various superheavy compound nuclei such as 306Ubb were performed between 2000–2004 at the Flerov Laboratory of Nuclear Reactions.Two nuclear reactions were used, namely 248Cm + 58Fe and 242Pu + 64Ni.The results reveal how superheavy nuclei fission predominantly by expelling closed shell nuclei such as 132Sn (Z=50, N=82).