DISCUSSION. THE ACTUAL STATE OF THE WORKS ON THE MONT CENIS TUNNEL AND DESCRIPTION OF THE MACHINERY EMPLOYED.

Keywords: TUNNELS, WORKS, TUNNELLING, MACHINERY, MACHINES, DRILLING, COMPRESSED, AIR, DRILLS, BLASTING, BORING, MINING, CUTTING, COAL, COSTS, LABOUR, PUMPS, PUMPING, PERFORATORS, RAILWAYS, MOUNTAINS, EXPLOSIVES, ROCKS, ENGINES, DIAMONDS, MONT CENIS, ALPS, MODANE, BARDONNECHE, FRANCE, ITALY, EUROPE