Siberian Chemical Combine
The Siberian Chemical Combine (Russian: Сибирский химический комбинат) was established in 1953 in Tomsk-7 now known as Seversk, in the Tomsk Region as a single complex of the nuclear technological cycle for the creation of nuclear weapons components based on fissile materials (highly enriched uranium and plutonium). It is a subsidiary of TVEL (Rosatom group).
Source: Wikipedia — Siberian Chemical Combine (CC BY-SA 4.0)