upcast

• Существительное, обозначающее вентиляционный ствол или проход в шахте, через который воздух выводится наружу или поднимается вверх.

A noun referring to a ventilation shaft or passage in a mine through which air is expelled or rises.

1. Mine ventilation shaftC1formaltechnical

   A ventilation shaft or passage in a mine through which air is forced upward and out of the mine.

   Вентиляционный ствол

   • The miners relied on the upcast to remove stale air from the tunnels.
   • Engineers designed a new upcast to improve airflow underground.
   • The upcast shaft was inspected for blockages regularly.

   Synonymsair shaftventilation shaft

   Antonymsdowncast