EXTENSION OF THE PICCADILLY LINE FROM HOUNSLOW WEST TO HEATHROW CENTRAL.

Keywords: LONDON TRANSPORT EXECUTIVE, SIR WILLIAM HALCROW, PICCADILLY LINE, EXTENSIONS, UNDERGROUND, CONTRACTS, AIRFIELDS, CUT AND COVER, TUNNELS, TRACK, STATIONS, EXCAVATING, SECTIONS, LININGS, SLABS, PICCADILLY LINE, CONSTRUCTION, METHODS, AIRPORTS, TUNNELLING, PILES, TRAYS, DRAINAGE, CONCRETE, GEOLOGY, OVERRUNS, ROOFS, RAILWAYS, DESIGN, WORKS, SECANT, WALLS, ANTIVIBRATION, VENTILATION, BOX, RUNNING, BASES, LONDON, PICCADILLY LINE, HOUNSLOW WEST, HEATHROW, HATTON CROSS, UK