Rock tiles and ore veins have a maximum quality level. Ore veins on the [[home server]] are limited to 50 QL (normal).
* Pretty bad: 1-40 39 QL* Normal: 40-50 59 QL* Good: 5060-60 79 QL* Very good: 6080-70 89 QL* Utmost: 7090-99 QL
== Vein depletion ==