The document describes the accident which took place at Chernobyl nuclear power plant prior to 1986 disaster. The information on the accident which took place on 9 September 1982 was classified. The document demonstrates that before the Chernobyl disaster the Soviet government knew about the deficiences of the Chernobyl nuclear power plant.

This document describes the deficiencies which were made in activities aimed at overlapping of Chernobyl disaster’s consequences. These deficiencies could lead to new victims because the security rules of handling with dangerous radioactive materials were broken.

Radiation levels in Pripyat and the surrounding area following the Chernobyl nuclear disaster.

Physicists at the Academy of Sciences give advice for containing the Chernobyl nuclear disaster.

This KGB report provides a chronology of the Chernobyl nuclear disaster, and gives information on the disaster's first victims.

This letter is just an example of similar numerous letters which were sent to Kiev on the occasion of signing Partial Test Ban Treaty (PTBT) in 1963. In these letters the Ukrainian teachers, workers, collective farmers wrote about their happiness because of partial prohibiting of the nuclear tests. At the same time these letters condemn China, whose relations with USSR had deteriorated by that time and who prepared to perform its first atmospheric nuclear test which broke PTBT regime.

This document describes the monthly anti-nuclear campaign held in Ukraine from September to October, 1958. During this campaign, a number of mass meetings were organized. In this meetings, scientists lectured on the damage of nuclear tests and danger of nuclear war. The lecturers argued that only western states were responsible for conducting nuclear tests and initiating the nuclear arms race, and that the Soviet Union was forced to develop its nuclear capabilities to protect socialist countries, even though the Soviets support the idea of prohibiting the nuclear weapon.

In this document, Andrei Sakharov, "father" of the Soviet thermonuclear bomb program, positively assesses Oleg Lavrientiev's ideas about the Soviet thermonuclear program, which were expressed in Lavrientiev's previously-written letters to Soviet leaders.

The nuclear research activities of UPhTI were concentrated in Laboratory No. 1 which was established as a part of institute in 1946. This archival document illustrates the list of its activities.

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.