In this document, the "father" of the first Soviet nuclear bomb, Igor Kurchatov, asks the chief of the Soviet ministry of energy, Pervukhin, to help demobilize the Ukranian physicist Veniamin Kelman, who was a fellow of UIPhT before the war. In this note Kurchatov writes about the high quality of the Ukrainian nuclear scientist and about his importance for the development of the Soviet nuclear program. This document once again demonstrates that Ukraine played a significant role in the Soviet military nuclear program.

This famous, de-classified document officially started the Soviet atomic project aimed at producing the nuclear bomb. The second point of this document orders the Ukrainian Academy of Sciences to establish a plan for the project of Uranium enrichment. F. Lange, a scientist from the Ukraine Institute of Physics and Technology, was appointed as head of this project because he worked previously on theoretical aspects of Uranium enrichment.

In this letter two nuclear scientists from UIPhT described the construction of the nuclear bomb and proposed to start activities in producing of the nuclear arsenal and make these activities secret. Two Ukrainian physicists were first Soviet scientists who revealed the way of producing the nuclear weapon (of course they did not know about the similar inventions of the western scientists which were made at the same time because of secrecy regime).

In this letter two nuclear scientists from UIPhT described the construction of the nuclear bomb and proposed to start activities in producing of the nuclear arsenal and make these activities secret. Two Ukrainian physicists were first Soviet scientists who revealed the method of producing a nuclear weapon (of course they did not know about the similar inventions of western scientists which were made at the same time under great secrecy).