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Keywords:
TUNNELS,
EXCAVATION,
DRIVING,
DRILLING,
TUNNELLING,
WORKS,
LABOUR,
EQUIPMENT,
METHODS,
CARRIAGES,
LININGS,
CONCRETE,
MULLARDOCH,
FASNAKYLE,
AFFRIC TUNNEL,
TUNNEL,
INVERNESS,
HJALTA,
UK,
SWEDEN
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© Thomas Telford and ICE
1950
