Coal Mining - Study Mode

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[#451] Half moon method of extraction of stooks will be employed when roof is

(A) Good

(B) Bad

(C) Reliable

(D) Unreliable

Correct Answer

(D) Unreliable

[#452] The thickness of isolation stopping in deg I gassy mine.

(A) 2 m

(B) 1 m

(C) 3 m

(D) 1.5 m

Correct Answer

(B) 1 m

[#453] The upper portion of the sand stowing pipe is generally changed after the transport of . . . . . . . . lac ton of sand.

(A) 1 - 2

(B) 2 - 4

(C) 4 - 6

(D) 6 - 8

Correct Answer

(B) 2 - 4

[#454] Mud bucket also called

(A) Calyx

(B) Banex

(C) Stirrup

(D) None

Correct Answer

(A) Calyx

[#455] A level roadway along the roof of the seam in level mining called . . . . . . . .

(A) Floor lateral

(B) Roof lateral

(C) Dip lateral

(D) Rise lateral

Correct Answer

(A) Floor lateral