; You hear falling rocks from the other side of the wall. A deep shaft will probably emerge. : Occurs inside a mine. Caused when there is already another mine nearby, but there is too much of a height difference to connect the two mines.
; You cannot keep mining here. The rock is unusually hard. : The message displayed when one attempts to open a tunnel directly onto a vein.
; The roof sounds strangely hollow and you notice dirt flowing in, so you stop mining. : You get this when mining a ceiling too close to the surface and it is not rock.
There is also a message for attempting to mine underwater; wording unknown.