Amurlag
Russia · built 1947
Amur Corrective Labor Camp (Amurlag) was a subdivision of GULAG which existed during 1947-1953 Its administration was headquartered in the settlement of Svobodny, Amur Oblast. Its main activities were coal mining, gold mining, railroad construction, construction, and lumber works. Its headcount was up to over 3,000 (1951).
Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).