Hey Guys,

I have created portable underground mine builder with one command! All you need is one special spawn egg in order to create mine system at level 10 - ideal for mining diamonds.


Command: 

http://pastebin.com/Yu6fiq8u



Usage:

Copy and past command into command block and power it with redstone block.

When structure is built, use Get Item sign to obtain Spawn_Diamond_Mine spawn egg. Choose place on the ground where you want the entrance to be and deploy the mine. You will notice that mine is being created and you will have to wait a few moments depending on how high above the ground you are.

When you see slime block down at the bottom of one of the shafts you can jump in!


Tunnels are generated in a pattern like so:
        |            |           |
------|---------|--------|--------
        |            |           |
------|---------|--------|--------
        |            |           |
------|---------|--------|--------
        |            |           |

And the room is in the center.


Good luck with your mining.