ɹˈɑːbɚt dˈɔːtɹeɪ, ɹˈiːəl nˈeɪm : ˈɪɡnæts kˈuːʃɪlwˌɪts ɐ nˈuːklɪɹ fˈɪzɪsˌɪst, wʌz sᵻlˈɛktᵻd baɪ ðə sˌiːˌiːˈeɪ tə lˈiːd ðə dɪvˈɛləpmənt ˈɛfɚt tə kənstɹˈʌkt ɐ tˈuːstˈeɪdʒ wˈɛpən.
Robert Dautray, (real name : Ignatz Koushelewitz) a nuclear physicist, was selected by the CEA to lead the development effort to construct a two-stage weapon.