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Keywords:
CONSTRUCTION,
CONCRETE,
TUNNELS,
HYDROELECTRICITY,
PROJECTS,
PNEUMATIC,
PLACERS,
LININGS,
RATES,
VENTILATION,
WALLS,
TRAINING,
THICKNESS,
VIBRATORS,
COUNTRIES,
DEVELOPING,
POWER,
ENERGY,
MACHKUND,
SOUTH INDIA,
INDIA,
ASIA
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© Thomas Telford and ICE
1954
