Question
Mine Planning Question on Optimum mill cut-off grade and its determination
Match the method of mining with orebody geometry, orebody strength and type of supports.
| Geometry | Strength | Support | Method |
|---|---|---|---|
| P. Tabular & Moderately Steep | L. | X. Unsupported | 1. Cut and Fill |
| Q. Tabular & Flat | M. Moderate | Y. Artificially Supported | 2. Block Caving |
| R. Massive and Steep | N. Weak | Z. -supported | 3. Room and Pillar |
A
P→L→Y→3; Q→N→Z→1; R→M→X→2
B
P→M→Y→2; Q→N→Z→1; R→L→X→3
C
P→L→Y→2; Q→M→Z→3; R→N→X→1
D
P→M→Y→1; Q→L→Z→3; R→N→X→2
Answer
P→M→Y→1; Q→L→Z→3; R→N→X→2
Explanation
Solution
The correct option is (D): P→M→Y→1; Q→L→Z→3; R→N→X→2