I would like to make sure of the correct approach to using a ore only block model in Pit Optimisation:
I have a regular block model 5X5X5 of the ore.
I have a dtm of the surface.
I have a ore wireframe
I have assigned the ore wireframe to the block model to obtain the block factor i.e. portion of the ore block within the wireframe.
I have adjusted the grade in the block to account for the portion of ore in the block i.e. I have multiplied grade by the block factor for example the grade is 1.2 g/t, BF is 0.5 the adjusted grade is 0.6 g/t.
I then use the adjusted grade in the Pit Optimisation
Is this the approach correct?
Has any one compared using this technique with going the whole route of creating a block that consists of ore and waste and has block factors?
Or is there any other technique out there such as sub-blocking the block model into the wireframe and assigning grades to the sub-blocking?
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