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Keywords:
DESIGN,
TESTS,
FANS,
CENTRIFUGAL,
EFFICIENCY,
BLADES,
AIR,
VELOCITY,
SHOCKS,
TESTING,
SIZE,
CURVES,
CASING,
DISCHARGES,
COLLIERIES,
MINES,
VENTILATION,
ANEMOMETERS
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© Thomas Telford and ICE
1896
