At every shaft used for lowering or raising of persons or material where a mechanical ventilator is installed, There shall be provided a property constructed . . . . . . . .
A. Stopping
B. Dam
C. Air lock
D. Reversal arrangement
Answer: Option C
Related Questions on Mine Legislation and General Safety
Combustable oils or materials not used for filling in . . . . . . . . Equipment
A. Hydraulic
B. Chemical
C. Biological
D. Eletrical
Out of the following belt conveyor related items which one is provided for safety for the persons?
A. Loop-take-up
B. Idler set
C. Audio-visual alarm
D. sequential control switch
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