There is a metal plant in Saint-Petersburg that produces details for hydropower and nuclear power stations. That is why its machine tools are simply huge with the size of a small house, as are the parts they make.
The plant occupies the enormous territory with endless workshops.
The generator cover of the Sayano-Shushenskaya hyrdopower plant.
Just compare sizes of the worker and the detail.
A worker sets a machine for drilling of turbine details.