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  • noun

Words related to upcast

air passage consisting of a ventilation shaft through which air leaves a mine

References in periodicals archive ?
And the last piece of the monumental jigsaw will be to construct a fan house, which drew fresh air into the mine via the upcast shaft.
As the upcast shaft is also used for man riding it is essential that the disposal waste does not give off any gas, fume, or offensive smell.
The main flow is down through the shaft to 800 level, up the ramps and ore passes to the 660 level where the main fan station is located, and then up the upcast shaft.
6 m/s, intake airways 7 m/s, return airways 10 m/s, ventilation raises 16 m/s and upcast shaft 17.