CORRESPONDENCE. THE CITY AND SOUTH LONDON RAILWAY WITH SOME REMARKS UPON SUBAQUEOUS TUNNELLING BY SHIELD AND COMPRESSED AIR.

Keywords: UNDERGROUND, RAILWAYS, TUNNELLING, SHIELDS, COMPRESSED, AIR, TUNNELS, HYDROSTATICS, AQUEDUCTS, RIVERS, EXCAVATIONS, LININGS, PLANT, SURVEYS, SUBAQUEOUS, UNDERWATER, FLUIDS, PRESSURE, CAST, IRON, SEGMENTS, GROUTING, MACHINERY, DRIVING, SHIELD DRIVEN, ALIGNMENT, LONDON, ENGLAND, MERSEY, VYRNWY, GLASGOW, SCOTLAND, CITY RAILWAY, UK, CITY & SOUTH LONDON RAILWAY