Drilling underground
The exploration of the shaft site also requires carrying out drillings underground. Starting at the mine openings, the rock is examined towards the new shaft from both the 700-m and the 574-m level.
Escape route for miners in an emergency: Before drilling started, mining safety had to be established
The first underground drilling started in January 2015 in a depth of 574 m. This drilling and a second one were successfully completed. A drilling in a depth of 700 metres was completed, too. Currently, another drilling is carried out in a depth of 574 metres, which continues in northern direction. In a depth of 700 metres, further drillings are being prepared. The aim is to examine the geological suitability of the site for the construction of a recovery shaft.
In a workshop taking place in October 2015, experts of different institutions and universities exchanged views about examination results and under which conditions the construction of a shaft can be implemented.