Dirtiness of thermonuclear bombs   An unsupported statement is made that  the smaller a thermonuclear bomb is the dirtier it is  This is misleading if not untrue  Bombs are optimised for an entirely different purpose It is true that in small and large bombs the bulk of the yield is from fission but this is a design decision and can easily be eliminated by using a nonfissile tamper material The secondary of a small multistage bomb is just another boosted fission stage fusion yield negligible The largest bomb ever tested MT was fairly clean but only because the fissile tamper was removed from the secondary to reduce contamination Small ultraclean bombs have also been tested  The article is about the current art of laserdriven ICF Fissiondriven ICF was the first mechanism used and has been proven so a summary definitely belongs here The details of using large explosions for power belong in another more general nuclear power article