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Keywords:
TUNNELS,
RAILWAYS,
CONSTRUCTION,
DRIVING,
BRICKWORK,
HEADINGS,
DRILLING,
DRILLS,
COMPRESSED,
AIR,
PUMPING,
TUNNELLING,
BRICKS,
VENTILATION,
WATER,
ALIGNMENT,
THEODOLITES,
INSTRUMENTS,
INSTRUMENTATION,
GRADIENTS,
PUMPS,
TIMBERING,
UNDERGROUND,
SURVEYS,
SURVEYING,
DORE,
CHINLEY,
TOTLEY,
COWBURN,
ENGLAND,
SHEFFIELD,
EDALE,
UK
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© Thomas Telford and ICE
1894
