Opencast Mining - Study Mode
[#216] In order to avoid formation of toe in hard rocks the depth of shot hole should be
Correct Answer
(B) 0.5 - 1 m deeper below the level of bench
[#217] Limiting gredient of drag line.
Correct Answer
(B) 12°
[#218] Cut holes are called
Correct Answer
(C) Sumpers
[#219] The line of intersection of the quarry side with the subadjacent unmined surface. Line defines the upper contour of openings.
Correct Answer
(A) Crest
[#220] The following factor is considered for calculation of cycle time of any excavating machine.
Correct Answer
(C) Swing factor