This program would tell the turtle to mine a cube with dimensions of 5 blocks on either side, and the turtle would mine these layers of 5 * 5 until it ran out of space and would return to the surface.
Another use of the mining turtle is of entertainment; a command that one can give is
The turtle then states "Preparing to get down" The turtle will then move in such a fashion it could be considered dancing. It will continue to "dance" until anything is typed into the robot again.
A Mining turtle can also be used to make a 2x3 tunnel. Simply type in Tunnel X where X = the number of blocks in length you want the tunnel to be. Very useful for strip mining.
To refuel, just place fuel in its current selected slot in its inventory, open lua, and type
Whereas if quantity is defined, it will consume the quantity entered, otherwise it will consume all fuel in the selected slot.
To see the Fuel Values, see http://computercraft.info/wiki/index.php?title=Turtle.refuel#Fuel_Values Maybe next time there is an Mining Turtle Tutorial under the Tutorials.
A Mining Turtle is the same as aTurtle, only now you can use it to mine for you. Mining a block is done instantly, and will only retrieve items or blocks if mining the block with the same pick would drop items or blocks normally, so any mining turtle can mine obsidian (instantly), but only a turtle with a diamond pick will retrieve ablock of obsidian; a turtle with a Ruby pick will not (however both can still mine Logs and Dirt)). The turtle still requires fuel to move, but mining a block (without moving) does not require fuel. The pickaxe does not have a durability - it can be used infinitely.
Since it mines every mineable block at the same speed, the mining turtle is also very useful for quickly mining obsidian, as long as you're familiar with the controls.
'BUT BE WARNED! USING TOO MANY MINING TURTLES IN THE SAME C'HUNK CAN CAUSE SERV'ER'S OR YOUR OWN SINGLE PLAYER WORLD TO LAG OR TO CRASH!