Open invitation to tender, deadline 11/04/2025, for exploratory drilling of the subsurface (Lot 1) near the west adit of the 2350 m Tasna tunnel to be refurbished on the Ardez-Ftan section of the Rhaetian Railway. The drilling is part of geological exploration. Click here for bid documents. Duration of contract from 01/05/2025 to 31/12/2025.
