Metal Mining - Study Mode
[#81] In the form of a square pyramid blasted material of 7368 m 3 by volume is accommodated. The height of the pyramid is 2.4 m. Calculate surface area in m 2
Correct Answer
(A) 1842
[#82] It is the mining method in which masses, panels or blocks of ore are under cut to induce caving, permetting the broken ore to be drawn off below.
Correct Answer
(C) Block caving
[#83] An arrangement that prevents oversized rock to pass.
Correct Answer
(C) Grizzley
[#84] The method of stoping selected in strong to weak, fairly steep are with weak host rock.
Correct Answer
(B) Cut and fill
[#85] The level roadways are dipping at a mild gredient between . . . . . . . .
Correct Answer
(B) 1 in 100 and 1 in 150