Angarsk expedition of Hydroproject in Chita region

August 1975. USSR. Chita Region. A helicopter with cargo near the settlement of prospectors of the All-Union Institute "Hydroproject". The expedition aimed to establish the possibility of building a hydroelectric power station on the Vitim River on the future section of the Baikal-Amur Mainline. The exact date of the photo has not been established. Grigory Kalachyan/TASS