<prompt> Qedela le nkulumo elandelayo: UKoval wadluliselwa esuka e-Oak Ridge waya elabhorethri eyimfihlo eDayton, e-Ohio ngo-June 27, 1945, lapho kwakwenziwa khona ama-polonium initiator. Ibhomu lokuqala le - athomu emhlabeni laqhuma eNew Mexico ngo - July 16 walowo nyaka. Amabhomu e - athomu alahlwa eJapane ngo - August 6 no - 9, okwaholela  <response>: Ukuzinikela KweJapane nokuphela kweMpi Yezwe II. ISoviet Union yasabela ngokwenza imizamo eyengeziwe yokwakha ibhomu layo le-athomu. Nakuba i - American Central Intelligence Agency yalinganisela ukuthi amaSoviet ayengeke aphumelele kuze kube ngu - 1950 kuya ku - 53, ibhomu lokuqala le - athomu laseSoviet laqhuma ngo - August 29, 1949. Ngokweziphathimandla zempi zaseRussia, isakhi sebhomu le-plutonium sase silungiswe ngendlela eyayinikezwe i-ejenti yezinhloli zempi uDelmar Koval. 