just a crazy random idea.
Single use miner:
pros:
cheap recipe
no need to place tool/scaner/pipes inside
no need to set up power grid. just power it once before use or fuel (single use battery) powered (included in recipe)
cons:
unretrievable
can't go further than 70 blocks
can't deal with water/lava
can mine only metals. can't mine diamonds/lazuli/redstone/gems/etc (because of cheap magnetic scanner maybe)
makes no sense to use with mods like COG due to low yield