LINES 2 AND 3 OF THE ATHENS METRO.

Keywords: ATHENS, GREECE, EUROPE, RAILWAYS, UNDERGROUND, METROS, TRANSPORT, CITIES, URBAN, CONSTRUCTION, PROJECTS, ROCKS, TUNNELS, SHAFTS, STATIONS, NATM, NEW, AUSTRIAN, TUNNELLING, METHODS, ARCHAEOLOGY, INVESTIGATIONS, AQUEDUCTS, DELAYS, POLLUTION, AIR, TRAFFIC, GEOLOGY, TBM, BORING, MACHINES, MACHINERY, EXCAVATIONS, SAFETY, TRAINS, VENTILATION, ESCALATORS, ROLLING STOCK, CAMPENON BERNARD SGE