Ok I now tried every autoated way of mining but somehow none of them seems to be effective, so I want to share my thaughts on this with you.
I guess its fair to include Buildcraft elemtns here since many users here use this mod as well.
Easy to set up, needs less resources, but only diggs straight down and therefore is pretty ineffective for mining ores. Also the propotion of ores to dirt/stone is pretty bad.
Hard to set up. Either you carry lots of batterys or crystals with the adequate energy device and transformers around. Needs los of energy and mining pipes which are fairly expensice but dont get wasted. Using the OD scanner and digging in a 9x9 area its quite effective for mining ores. Also since it only mines ores and only collects stone/dirt if it nees to digg trough them to get to the ores the ore to dort/stone proportion is quite good.
Also hard to set up. Combustion engines and a pump to cool them and several pipes. It will eventually mine a decent amount of ores due to the fact that it can excavate like a complete chunk. But since it diggs out just everything that is underneath it, the ore to dirt/stone ratio is pretty bad. you get like a whole stack of stone for each block of ore you will find. Also it leaves one realy realy ugly hole....
Mining by hand:
Easy to set up- drill, torches, lapron pack, a sword and something to eat. Its dangerous because there are so many creepers around these days which like to act like kami kazi bombers and just drop down on you - but what is live without a little thrill?
But for like 10-15 minutes of mining you will get a whole inventory full of ores. Dirt and stone can be dropped during the process to mak room for new ores or do build bridges over lava.
So far I have found no way of mining that beats mining by hand in terms of speed and effectivity.
Any thaugths on this?