Maybe we can add something like:
The sources popped by greslin should be dig with an greslin pick otherwise the risk a degrades will be higher ( like you dig at qlt 250 but at one point the action fail and you are now at qlt 230 this kind of things) ?
The sources popped by greslin should be dig with an greslin pick otherwise the risk a degrades will be higher ( like you dig at qlt 250 but at one point the action fail and you are now at qlt 230 this kind of things) ?