Techical vist in Piraeus Metro station - 2019
On 4-12-2019, on the occasion of the St. Barbara's celebration, patron saint of workers in tunnels, underground works and miners GTS organized a Technical Visit to the Piraeus Metro station under construction. The construction of this new station presents significant technical challenges due to its proximity to the Port of Piraeus and important neoclassical buildings.


Technical VIsit Thessalonki meto construction - 2017
On the occasion of the St. Barbara's celebration, patron saint of workers in underground works, GTS organized a Technical Visit to the Thessaloniki METRO works. The Technical Visit was scheduled for the morning of Saturday, December 9, 2017, at the Kalamaria Station under construction and the Pylaia depot.
Technical VIsit Thessalonki meto construction - 2010
On Sunday, December 5, 2010, GTS has organized a visit to the construction works of the Thessaloniki Metro. The Thessaloniki Metro works are of particular interest due to the specificities of the construction of the stations and the opening of the twin tunnels with TBM.


Technical visit at LTCP underground repository - 2009
On Sunday, December 6, 2009, a one-day excursion was held at the Technological Cultural Park Lavrio Park (TCLP) and a technical visit to the underground hazardous waste repository (UHWR) facility that has been constructed using the room and pillar mining method
Technical Visit at the ERGOSE tunnels in Aigio - 2008
On Sunday, December 14, 2008, a one-day excursion to the tunnels of the Corinth-Patra section of ERGOSE and a technical visit to the Aigio tunnel took place. The Corinth-Patra tunnels are of great interest, due to the particular geological formations and tectonic regime governing the Gulf of Corinth.


Technical Visit at Kalidromo tunnel - 2007
On Sunday, December 2, 2007, a daily technical visit was held at the Kallidromo railway tunnel of ERGOSE. The Kallidromo tunnel is a twin tunnel 9.3 km long which is part of the Athens - Thessaloniki high-speed railway line.
Technical Visit - Bypass tunnels of Agios Konstantinos (Knimida) - 2005
On Sunday, December 4, 2005, a one-day technical visit was made to the bypass tunnels of Agios Konstantinos (Knimida) and subsequently to the "Vagonetto" mining park. The GTS colleagues were informed about the progress of the work in the tunnels
