Auto Mining machine!!!

UPDATE: Sorry, but I must have misplaced this map and, er... lost it.
Hopefully the screenshops are Ok to rebuild ar a better one exists made
by someone else :D

A mining machine that uses the essence of TNT combined with a minecart to create a ever expanding hole digging to bedrock.

Basically, you put TNT minecarts in (DON'T use ordinary TNT) and flick the lever and it will start blasting a hole in the ground. There may already be a small hole I made while testing.

Have fun :)

Made on flatland.