The tunnel located below the KTK Visoko Firm, has revealed the breakage of the marl rock that is chipping away. Inside of this tunnel, the supporting beams will be placed for the safety reasons. According to these experts, the supporting beams should be immediately placed at the entrance of the tunnel. This work will be done by the professional mining crew of experts that will also maintain and clean the tunnel.



After the careful inspection, it was concluded that the air ventilation in the right wing of tunnel was much worse than in the left wing of the same tunnel, and regular gas inspection will be conducted. All of the work will be done under the supervision of the mining expert, Mr. Enver Hasić.

Photo1.- shows the entrance into the tunnel, located near (KTK Visoko).

Photo 2. The breakage of the rock within the tunnel



On the location Ravne, the tunnel stretches at the range of 200 meters and after the visual inspection, it was confirmed that the side sections were closed by gravel and loam. It is very noticeable that this material was brought from a different place, which does not match the material found in the tunnel. The very front of the entrance is closed by a stack of stones that make up the wall.

Photo #3.the detail of the wall (taken from up close).





Photo# 4. There is a visible difference between the original material of the arch way and the material that was used for closing of the entrance of the lateral tunnel.

At the certain sections of the tunnel, the fallen debris was found. The debris will be removed in order to make the conditions more workable.



The static calculations and various precautionary measures will be taken to ensure the safety of the workers.