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More Mining Engineering Questions
Sound, pressure level is measured in
No working of gallery in gassy mine which has approached within . . . . . . . .m of known dyke, shall be extended to a distance of . . . . . . . .m from the nearest ventilation connections unless the air is coursed upto a point within . . . . . . . .m from the face.
Incubation period not related to
To ventilate narrow places driven in advance of the general ventilation, particularly in B & P workings . . . . . . . . are used.
Which of the following is true for ordinary electric detonator?