To Herobrine_Exodus: Those three elements are not fissile through neutron bombardment. Some of those could amplify the amount of EU (maybe?) produced by a nuclear reactor, but as far as using them for EU? No, no. The only three elements that we can split through neutron bombardment are plutonium, thorium, and uranium. Greg has already implemented all three of those as far as I know. (lol)
Ore Suggestion Topic: You can hold uranium ingots in your hand...Might be a bit warm if it's enriched, but the ore/unnenriched shouldn't do any harm. The solution to this would be to add Radium to the game. It would add radioactivity to the ores. You would get the ore block and that would be radioactive. Putting it in a centrifuge would produce Radium, Uranium, and Thorium. Radium would be a junk product, but it would be useful for fusion recipes. It would be pretty hard to get rid of and keep. That lead box idea is pretty dang cool too Spwnx.