Optimising Open Pit/Undeground Cut Over

CIM Montreal 2011
Abstract Many mines combine open pit with underground mining, and on many occasions the underground mine is and extension of the open-pit. In these circumstances the decision about where the open-pit stops and the underground starts is crucial and driven by many factors. This paper looks at some of the ways that this cut-over can be calculated and specifically examines the calculation of it using modern mine optimization software. The paper will include some case studies which will review various outcomes using these techniques.
Keywords: Optimisation, Underground, Open pit, Cutover
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