STI s. r. o, slovak tunneling and mining company. www. sti. sk.
Hlavná 74
053 42 Krompachy
Geological survey gallery N514 for Prague circuit tunnel (Lochkov - Radotin). The length of the tunnel is 770m for a cross section of 25m2 . Prague circuit tunnel Project started in 2003 and completed in 2004. Project type: Geological survey gallery. Location: Prague, Czech Republic. Description: Geological survey gallery N514 for Prague circuit tunnel (Lochkov - Radotin).