Random FactsCuriousOneNovember 14, 2015core, death, demon, facts, fun, involved, mass, plutonium, scientists, subcriticalComment The "Demon Core" was a subcritical mass of plutonium involved with the deaths of two scientists Random FactsCuriousOneNovember 14, 2015core, death, demon, facts, fun, involved, mass, plutonium, scientists, subcriticalComment
