ventilating shaft

English

Noun

ventilating shaft (plural ventilating shafts)

  1. Synonym of ventilation shaft.
    • 1957 June, “Relining Dove Holes Tunnel”, in Railway Magazine, page 423:
      The tunnel was constructed about eighty years ago, and is 1 mile 1,224 yd. long, […] There are eight existing ventilating shafts varying in diameter from 8 to 10 ft. and in depth from 52 to 336 ft.
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