Is put

14.05.2020 | Категория: Обустройство участка

The rings under their weight sit down at the extent of the excavation of the soil, and a new reinforced concrete ring is put upstairs.

As the mine is descent, the well rings are implicitly and in time seal with each other and fixed with metal brackets, so that during the movement of the shaft the ring does not shift and do not fill up the workers.