Update: The forum ate my batboxes and turned text bold instead.
I hope this did not cause too much confusion. I fixed the text below.
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I have not tried using an ender chest with this, but I found two IC2 pump and miner setups that work well for me and require little supervision. I mostly use these in the nether -- the zombie pigmen don't seem to mind. (I build a small cobblestone shelter since I don't know how the mining equipment holds up against ghastly fireballs.)
As seen from above:
[ ][C]
([P]
[T][M][C][C]
[ ] - Empty block
[C] - chest (regular wooden)
( - Batbox
[P] - IC2 Pump
[T] - Thermal Generator
[M] - IC2 Miner
Put a stack of empty cells into the pump (requires 16 tin to make)
Prime the Thermal Generator with some lava buckets or lava cells.
Put the mining pipe, drill and scanner into the Miner.
For maintenance, you may need to
1) Add more mining pipes to the miner
2) Add more lava into the thermal generator
3) Add more empty cells into the pump
If you install these in the nether, there is no shortage of lava. You pump will output lava cells into the chest next to it; you can use these cells to power the thermal generator. (Manual move in this first setup.)
If you are mining through a pool of lava with the biggest scanner installed in the miner, then you will go through a lot of empty cells.
On the other hand, you will also get a lot of lava cells.
A slightly more economical setup would be:
[T](
[P][M][C][C]
[ ] - Empty block
[C] - chest (regular wooden)
( - Batbox
[P] - IC2 Pump
[T] - Thermal Generator
[M] - IC2 Miner
For this setup the pump only needs one empty cell.
The pump sends the lava into the thermal generator and also gives a 50%(?) IC2 energy boost to the thermal generator.
For me, the miner seems to run slower with this setup, especially when you are going through lava.
To keep this running, you only need to worry about:
1) Keeping the thermal generator supplied with lava -- which happens automatically with the pump when mining most places in the nether.
2) Add more mining pipes if the miner runs out.
I recommend using the second setup with a regular mining drill if you are just getting started and want to conserve resources.
Once you have a decent supply of tin, etc. I would recommend the first setup with a diamond mining drill.
Moving either setup is not too bad with a loss-less mode electric wrench.
Don't forget to fill in the first block under the miner when breaking down the mining location or it will drop down the mining shaft.
(If you have enough wood you can just leave the chests behind.)
Good luck with your IC2 mining!