In December 1944, the NKVD supervised the Soviet atomic bomb project ("Task No. 1"), which built and tested a bomb by 29 August 1949. The project was extremely labour-intensive. At least 330,000 people, including 10,000 technicians, were involved. The Gulag system provided tens of thousands of people for work in uranium mines and for the construction and operation of uranium processing plants. They also constructed test facilities, such as those at Semipalatinsk and in the Novaya Zemlya archipelago.
In December 1944, the NKVD supervised the Soviet atomic bomb project ("Task No. 1"), which built and tested a bomb by 29 August 1949. The project was extremely labour-intensive. At least 330,000 people, including 10,000 technicians, were involved. The Gulag system provided tens of thousands of people for work in uranium mines and for the construction and operation of uranium processing plants. They also constructed test facilities, such as those at Semipalatinsk and in the Novaya Zemlya archipelago.