Quality Targets

• Selected: The target is applied to the destination location.
• Cleared: The target is not applied to the destination location.

Tip: When you clear the Active check box, you make the target ineffective without deleting the rule.

The location to which the target applies.

The destination is usually a stockpile or a process, but you can also set quality targets for fill locations. You can set quality targets on the first stockpiles that receive material from mining location, and on any processes.

The material classes used in the target calculation.

Usually, you are required to specify a material class if you have created only a single destination that can receive multiple material classes. If you have created different destinations for different material classes, which is the recommended method, you do not need to specify material classes because the quality target is set on all material that is fed to the stockpile to process.

Tip: You can use wildcards to specify more than one material class. To specify the material class using the Wildcard Expression Builder, click the Ellipsis button.

The quality or user calculation on which the target is set.

The average qualities you set in the Qualities data grid and the user calculation you set in the User calculations data grid are displayed in the list.

The lowest acceptable value for the target at the Destination.

This value must be less than or equal to the Value.

Note: Thresholds are used only if you are setting a target for a process, the process can take material from both mining locations and stockpiles, and the target parameter REHANDLE is set to yes. When you use thresholds, if stockpile material exists, it is processed in place of mined material only when it is necessary to meet the target thresholds. MineSched always rehandles the minimum amount of material required to meet the targets.

The highest acceptable value for the target at the Destination.

This value must be greater than or equal to the Value.

Note: Thresholds are used only if you are setting a target for a process, the process can take material from both mining locations and stockpiles, and the target parameter REHANDLE is set to yes. When you use thresholds, if stockpile material exists, it is processed in place of mined material only when it is necessary to meet the target thresholds. MineSched always rehandles the minimum amount of material required to meet the targets.

The relative importance of each target. The priority value can be any number greater than zero. The lower the priority value the higher the priority. For example, if three targets, A, B, and C, are given priority values 1, 2, and 6, respectively, target A is twice as important as target B and six times as important as target C, and target B is three times as important as target C. The default priority value is 100.

Tip: You can turn a target off by setting a priority of zero.

Note: You can change priority values over time. If you change the value for a priority part of the way through a period, the new value does not take effect until the beginning of the next period.

The date on which the target is applied to the Destination.

You can use a calendar date or an event. The date or event plus the Delay determines the actual start date.

You use the Calendar button to select a date from a calendar. You use the Ellipsis button to select an event using the Event Builder.

Note: You can set targets for the same destination over different periods of time with different values for the Value, Lower Threshold, Upper Threshold, and Priority. Changing targets is only sensible at the start of each new scheduling period. If you set up a change to a target during a scheduling period, the change is applied at the start of the next scheduling period.

The delay after the Date/event before the target is applied to the Destination.

The default delay is 0. The delay can be any positive number.

Note: Part days are expressed as decimals, not in HH:MM:SS format.