This is a situation report from Combodia

An earlier attempt to demonstrate our capability to produce medical-grade Pu-238 was discontinued because of unanticipated growth of the neptunium oxide-graphite matrix targets. It has since been established through a subsequent test discharged in February that the graphite matrix targets failed because of inadequate provisions for target expansion and not because of inadequacies in the graphite matrix targets could be used successfully to produce low impurity plutonium. A report on the graphite matrix growth analysis test will be completed by mid-June 1970.