Ka kammala wannan magana: An gudanar da shirin Japan don ƙera makaman nukiliya a lokacin Yaƙin Duniya na Biyu. Kamar shirin makaman nukiliya na Jamus, ya sha wahala daga matsaloli masu yawa, kuma a ƙarshe ya kasa ci gaba fiye da matakin dakin gwaje-gwaje kafin bama-baman nukiliya na Hiroshima da Nagasaki da kuma
Jafananci sun mika wuya a watan Agusta 1945.