Export fields

These define the grade fields (in Whittle terms the elements) which will be exported to the model parameter file. When the 4D Output option is checked (MM to Whittle function only) only one of these fields can be defined.

When defining the grade fields to be exported to Whittle or MineMax, note that the order in which the fields are specified is important, as this order is used to determine the relative ranking of the elements in the pit optimisation program.