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Doing a pit optimisation for a client, I realised you can utilise 2 different beneficiation plants by cleverly setting up the expressions. The material above the higher cut-off grade (COG) gets "dispatched" first and committed to that plant. That material is then taken care of. The remaining material above the lower COG is then "dispatched" to the other plant, leaving the remaining material as waste. The beauty comes in the reporting where Whittle clearly shows you the tonnes moved to the different plants, the grades from the 2 plants, the yields, the associated costs as well as revenues.

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