Construction of the Sayano-Shushenskaya hydroelectric power station in Krasnoyarsk Krai

July 1-20, 1977. USSR. Krasnoyarsk Territory. Workers laying concrete in one of the blocks of the Sayano-Shushenskaya hydroelectric power station dam using a concrete paver-manipulator with four vibrators on a telescopic boom, designed and manufactured at the construction site, with a productivity of more than 70 cubic meters of concrete per hour. The exact date of the photo is unknown. Yuri Barmin/TASS