Stage Precedence

The Stage Precedence subtab allows you to check the number and order of stages specified for your setup. To enter it, go to the Process Flow tab and select Stage Precedence from the drop-down list.

The order or precedence in which stages should be mined has a large influence on the results obtained by Strategy. While Strategy is free to explore mining sequences outside this order, there is an assumption that a higher net present value (NPV) will most likely be found when this order is followed. The Stage Precedence subtab allows you to reorder the stage priorities. This can be useful in the following situations:

• The stages in the model are not named or numbered in the decreasing value order, and you want to inform Strategy what the correct order is.

• When you want to force Strategy to mine stages in a different order.

• If due to practical mining reasons a stage with lower value should have preference over a stage with higher value; for example due to the waste stripping, pit access, or in-pit dumping room.