Question:
Lerchs--Grossmann algorithm or nested pit shells are most commonly used for which stage of mine planning?
Lerchs--Grossmann algorithm or nested pit shells are most commonly used for which stage of mine planning?
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Remember:
\[
\boxed{
\text{Lerchs--Grossmann}
\Longrightarrow
\text{Ultimate Pit Limit Optimisation}.
}
\]
Updated On: Jul 14, 2026
- Short-term production scheduling
- Ultimate pit limit optimisation (economic pit shell determination)
- Equipment selection
- Ventilation network design
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The Correct Option is B
Solution and Explanation
Step 1: Recall the Lerchs--Grossmann algorithm.
The Lerchs--Grossmann (LG) algorithm is a graph-theory-based optimization technique used in open-pit mine planning.
Step 2: State its application. It is used to determine the economically optimum pit boundary, known as the \[ \boxed{\text{Ultimate pit limit (ultimate pit shell).}} \] Hence, \[ \boxed{(B)} \] is the correct answer.
Step 2: State its application. It is used to determine the economically optimum pit boundary, known as the \[ \boxed{\text{Ultimate pit limit (ultimate pit shell).}} \] Hence, \[ \boxed{(B)} \] is the correct answer.
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