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Keywords:
BOARD OF TRADE,
CONSTRUCTION,
OVERHEAD,
ELECTRIC,
TRANSMISSION,
LINES,
ELECTRICITY,
CONDUCTORS,
WIRE,
STRESS,
POLES,
STEEL,
WOOD,
INSULATORS,
FLEXIBLE,
DUCTILITY,
ELASTICITY,
TELEGRAPHY,
COPPER,
WIND,
PRESSURE,
CRADLES,
TELEGRAPHS
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© Thomas Telford and ICE
1907
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