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Keywords:
HYDROELECTRICITY,
DIVERSION,
METHANE,
ACCIDENTS,
DISASTERS,
EXPLOSIONS,
SAMPLING,
COMPRESSED,
TUNNELS,
DAMS,
GAS,
DAMAGE,
PLUGS,
INVESTIGATIONS,
RIVERS,
AIR,
CLOSURES,
CONSTRUCTION,
HAZARDS,
DEATHS,
TROPICS,
WATER,
GATES,
PRESSURE,
FURNAS,
AKOSOMBO,
BRAZIL,
SOUTH AMERICA,
GHANA,
AFRICA
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© Thomas Telford and ICE
1967
