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What is the optimal cutoff grade for multiple minerals?
1 : SKEMA Business School
SKEMA Business School, Skema Business School
2 : Universidad de Chile
3 : Texas A&M University
In mine planning problems, cutoff grade optimization defines a threshold at every time period such that material above this value is
processed, and the rest is considered waste. In orebodies with multiple minerals, which occur in practice, the natural extension is
to consider a cutoff surface. We show that in two dimensions the optimal solution is a line, and in n dimensions it is a hyperplane.
