upcast


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upcast

[′əp‚kast]
(mining engineering)
The opening through which the return air ascends and is removed from the mine; the opposite of downcast or intake.
An upward current of air passing through a shaft.
Material that has been thrown up, as by digging.
References in periodicals archive ?
However, joint experimental studies of PJSC Yuzhcable Works (Kharkiv) and the Institute of Electrodynamics of the National Academy of Sciences of Ukraine (Kiev) using UPCAST line US20X-10 as an example on the continuous casting of oxygen-free copper wire have showed that the replacement procedure of the inductor significantly reduces the working life of the furnace [8].
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.
There will be a total of six downcast and six upcast shafts, including two pipe shafts for pumping water.
Once holing has been made with the service shaft and upcast ventilation is commissioned, the development rate from the exploration shaft can be raised to more than 50 m/d.
However, compared to the present system which has two distribution levels and about 50, upcast and downcast air-shafts, it is a simple system.
This plant was supplied by Outokumpu Castforrm OY, Finland and uses the upcast system of manufacturing rod.
Lota is served by four shafts, the upcast Grande and Alberto and the downcast Carlos 1 and 2 shafts.
Once the Climbers were in place, the evacuation rate greatly improved An additional escape route was established in an upcast ventilation raise between levels 39 and 41, and another Sky Climber replaced the laborious Rollgliss hoisting between levels 41 and 43.
6 m/s, intake airways 7 m/s, return airways 10 m/s, ventilation raises 16 m/s and upcast shaft 17.
The two splits rejoin on the return to the upcast shaft.