ŽSR Railway track Púchov – Žilina, Tunnel Diel Modernization of railway track Púchov – Žilina, Tunnel Diel – Western portal Implementation: drainage drills 66 pcs – 4380 m ground anchors 65 pcs – 1170 m ground nails 43 pcs – 387 m Piles of large diameter 1000 mm 64 pcs – 957.9 m