- ASA and PETN
- Ammonium nitrate and PETN
- ASA and Ammonium nitrate
- None of these
(a) ASA and PETN
P. Drag cut 1. Parallel cut
Q. Burn cut 2. Horizontal half wedge cut
R. Pyramid cut 3. Vertical half wedge cut
S. Fan cut 4. Double wedge cut
- P-1, Q-2, R-3, S-4
- P-2, Q-1, R-4, S-3
- P-3, Q-1, R-4, S-2
- P-4, Q-1, R-3, S-2
(c) P-3, Q-1, R-4, S-2
- Burn cut
- Pyramid cut
- Fan cut
- Coromant cut
(c) Fan cut
- Burn cut
- Pyramid cut
- Wedge cut
- Fan cut
(a) Burn cut
- Rotary-percussive drilling
- Percussive drilling
- Rotary drilling
- Hydraulic drilling
(c) Rotary drilling
- Collar
- Heading
- Inset
- Scaffold
(a) Collar
- cross bit
- button bit
- rotary roller bit
- button drag bit
(c) rotary roller bit
- Bit
- Drill
- Adaptor
- None of these
(a) Bit
- Cohesion
- Poisson’s ratio
- modulus of elasticity
- dilation
a. Cohesion
- Impact action
- Rotary action
- Both (a) & (b)
- Cutting and ploughing
a. Impact action
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