All surface structure and supports within a horizontal. distance of . . . . . . . . meters from all entrances to a mine shall be of fire proof material.
A. 5
B. 15
C. 20
D. 10
Answer: Option D
A. 5
B. 15
C. 20
D. 10
Answer: Option D
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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