11. Quality Fields Setup

Once the design solids and their volumes have been written to a data table, Qualities fields can be added to the table prior to those fields being populated with values calculated by sampling quality grids.

On the Home tab, in the Setup group: Select Fields to create Coal quality fields in the Qualities folder that was setup earlier and (if applicable) specify their aggregations. The quality fields that are added will match the qualities in the grid files that will be imported during Table Grid Sampling.

For example:

• You add a Tonnes field under the Coal folder as a calculated field: Coal Volume * Density

  This can then be used as the aggregation weighting field for other qualities that you add (Ash, CSN, Specific Energy, etc.) depending on the quality grids sampled.

• You set the Waste Volume, Coal Volume and Tonnes field aggregations as: Sum