In a private comrnunicationl, wc reported the results of nondestructive and destructive examination of the SUPERFACT 1 experiment carried out by both the TransUranium Institut (TUI) and the french Commissariats i l’Energie Atomique (CEA). This experiment aimed to study, the bchaviour of IiseIs made up with Neptunium or Americium (from 2 Weight’% up to 45 wtYo part of heavy atoms) under irradiat...