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Keywords:
DESIGN,
TESTING,
TESTS,
CENTRIFUGAL,
FANS,
EFFICIENCY,
BLADES,
AIR,
VELOCITY,
PRESSURE,
VENTILATION,
MINES,
OUTPUT,
EXPANDING,
CHIMNEYS,
TIPS,
SHOCKS,
SHAPE,
VARIATIONS,
EXPERIMENTS,
DISCHARGES,
COMPRESSION,
SPEED,
DIMENSIONS,
WATER,
GAUGES,
COLLIERIES,
SIZE,
CURVES,
CASING,
ANEMOMETERS
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© Thomas Telford and ICE
1896
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