to geological and exploratory, geological and reconnaissance, and piezometric drilling operations as well as the preparation of technical boreholes for the purpose of rock mass freezing during shaft sinking operations.
of mine shafts
The sinking of shafts based on conventional and special methods; Shaft reconstruction and decommissioning; shaft sinking using a unique shaft sinking technology.
Construction of horizontal
Drivage of narrow or chamber workings, rebuilding or reconstruction of headings, underground assembly works, underground drilling operations.
Comprehensive industrial construction engineering, construction and modernisation of industrial pipelines, construction of public buildings.