From the mod spotlight I've seen by Bevol (whom I believe surf this forum as well), there's 2 kind of machines.
1.) The Boring (making holes, not making people bored

) Machine, makes a tunnel. You get to choose the shape of the tunnel and as well as if it yields blocks or not. You would need another machine to grab the blocks since they are just deposited into the world.
2.) The Pile Driver. Vertically shaft maker, I don't see any blocks being harvested, though I do see some blocks at the bottom of the shaft. Unsure on how it would retrieve those blocks though.