rpsmithusmc

I would rather have the tunnel bore over any of the other automatic mining machines. The quarry is great for clearing a chunk to make an underground base, however, if it's rare resources you are after (like diamonds) the tunnel bore is perfect. Just make a ladder going down to the diamond layer and set it up. Horizontal automatic mining should yield more rare resources than vertical automatic mining in a small grid. So I'm glad Voltz has the tunnel bore and not the quarry or mining well.