A thousand tons of molten radioactive lithium, exposed to air, would make a pretty satisfying boom. The tritium being bred in the lithium had better amount to

A thousand tons of molten radioactive lithium, exposed to air, would make a pretty satisfying boom. The tritium being bred in the lithium had better amount to more than micrograms, because that will be fuel. Separating the day's few grams of tritium from the thousand tons of molten radioactive lithium coursing through miles of pipe is an exercise not yet tackled by fusion promoters.