ventilation shaft
noun1
A (usually) vertical shaft constructed for the purpose of ventilating underground mines and tunnels, including sewers.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A (usually) vertical shaft constructed for the purpose of ventilating underground mines and tunnels, including sewers.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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