The most popular and well-developed approach to the ultimate pit limit problem is the Lerchs-Grossmann (LG) algorithm, primarily based on Graph Theory. It was 1964 when Helmut Lerchs and Ingo F. Grossmann presented their algorithm to find the optimum design for an open pit mine. In their words at the time, "the objective is to design the ...
The history of why and how pit optimisation has become such a useful tool for converting resources into reserves within the JORC guidelines is looked at. The Lerchs-Grossman algorithm, often referred to as just LG or Whittle, has become synonymous with the process of calculating ore reserves for surface mining. This article looks at the history …
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