Question

In the context of mine planning, match the following:

Technique/Algorithm	Preferred Application
P. Lerchs-Grossman algorithm	1. Ultimate pit limit
Q. Kriging	4. Reserve estimation
R. Lane’s theory	2. Cut-off grade optimization
S. Taylor’s rule	3. Mine life

• A. P-4, Q-3, R-2, S-1
• B. P-1, Q-2, R-3, S-4
• C. P-1, Q-4, R-2, S-3
• D. P-3, Q-2, R-4, S-1

Hint:

Remember: Lerchs-Grossman for pit limits, Kriging for reserves, Lane’s theory for cut-off grade, and Taylor’s rule for mine life.

Answer 1

The Correct Option is C

- Lerchs-Grossman algorithm is widely used for determining the ultimate pit limit.
- Kriging is a geostatistical method primarily used for reserve estimation. 
- Lane’s theory deals with cut-off grade optimization to maximize economic returns. 
- Taylor’s rule provides an empirical relationship for estimating mine life. 
Hence, the correct matching is: \[ \text{P-1}, \quad \text{Q-4}, \quad \text{R-2}, \quad \text{S-3} \]