Schematic:

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They can mine copper, lead, beryllium, beryllium(wall), graphite(wall), titanium, coal and scrap. I haven’t tested it for wall resources yet.

By default they mine copper and lead only and can’t be controlled via command mode. So I made this logic.

Set sorter to required item and link processor to core and set coreName in line 1

UnitLocate is not returning building value for some reason with this unit. That’s why I have to link the processor to core.