Here a nice thing of nuclear warhead maintenance/decommisioning of nuclear warhead. The article discuss mostly about the plutonium cores, but modern weapons uses triutium to boost the yield, see https://en.m.wikipedia.org/wiki/Boosted_fission_weapon. Tritium is faintly radioactive, and it decays over time in the stable helium-3. This is a quite rare isotope of helium, in comparison to the much abundant He4. He3 is much needed in dilition refrigerators, the big machines often seen in advestisment of quantum computer. So such activities on nuclear weapons are the source of a critical and scarce ingredient for quantum computing!