Ukraine. Alluvium with dredgers of the earthen cofferdam, which will connect the dam with the bank of the Dnieper River. The ship-dredger "Onega" works on the excavation of the hole (a temporary passage for the passage of water during the construction of the dam). Unloading the first transformer that arrived at the assembly site. Installation of the turbine impeller. Installation of the impeller in the crater of the second turbine.