The new overland route to India and the railway tunnel of the Alps: transverse section of the tunnel, 1869. Diagram of part of the Grand Tunnel under the Sardinian Government appointed M. Maus, a Belgian engineer, and M. Sismonda, a geologist, to devise the best line of tunnel and the best mode of young men-Sommeiller, Grattoni and to contrive a more economical system by employing water-power, instead of steam-power, to condense the become acquainted with Mr. Bartlett's use of the airforce to pierce holes in rocks, they perceived tha
The new overland route to India and the railway tunnel of the Alps: transverse section of the tunnel, 1869. Diagram of part of the Grand Tunnel under the Sardinian Government appointed M. Maus, a Belgian engineer, and M. Sismonda, a geologist, to devise the best line of tunnel and the best mode of young men-Sommeiller, Grattoni and to contrive a more economical system by employing water-power, instead of steam-power, to condense the become acquainted with Mr. Bartlett's use of the airforce to pierce holes in rocks, they perceived that the combination of water-power with that striking and boring power would be just the agent wanted for the arch of the tunnel is nearly semicircular; it is 25 ft. 3½ in. wide at the base, 26 ft. 2¾ in. at the broadest part, and 24 ft. 7 in. high at the Modane end, but 11¾in. higher at the Bardonneche end. Its roof and walls are cased with masonry; at the Bardonneche end the vault is of brick and the sides are of stone, but at the Savoy end the whole is built of water is carried off by a covered drain in the middle of the floor'. From "Illustrated London News", 1869.
Size: 1910px × 1920px
Photo credit: © The Print Collector / Alamy / Afripics
License: Licensed
Model Released: No
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