; The cave walls look very unstable. You cannot keep mining here. : Occurs inside a mine. Exact cause unknown, it happens when mining close to the top of the rock layer, and can sometimes be avoided by mining downwards.
; You hear falling rocks on 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.
; Dirt will flow The cave walls look very unstable and dirt flows in. You would be buried alive. : Occurs inside a mine. Happens when the tile you are mining on will break out to the surface, but the surface is not exposed rock. To excavate it, you must first expose the rock on the surface.
; There's also a message for attempting to mine underwater, text unknown.
; There is no space to mine here. Please clear the area before continuing. : Occurs when the tile you're standing on has 100 items on. Move a few objects and you can continue.