The project covered the preliminary mining works as shaft excavation for diameters 3050 mm and 3800 mm with length 793 m. It also covered the gallery construction works for 4000 mm diameter with 1701 m horseshoe section and 3600 mm diameter.
The project covered the preliminary mining works as shaft excavation for diameters 3050 mm and 3800 mm with length 793 m. It also covered the gallery construction works for 4000 mm diameter with 1701 m horseshoe section and 3600 mm diameter.