Buuxi weedhan soo socota: Bishii Febraayo 1945, koox yar oo saynisyahano ah ayaa ku guuleystay inay soo saaraan qadar yar oo maado ah oo ku jira kala soocida aasaasiga ah ee dhismaha RIKEN.
Howlgalka "Meetinghouse" ee ciidamada cirka ee Maraykanka oo lagu qaaday Tokyo. Ma jirin wax isku day ah oo lagu dhisayo uranium; biyo culus lama heli karin, laakiin Takeuchi Masa, oo mas'uul ka ahaa kala soocida Nishina, ayaa xisaabiyay in biyaha fudud ay ku filnaan doonaan haddii uranium-ka lagu kobcin karo 5<unk>10% uranium-235.