Slavery need have sledgehammer or primitive tool in hand.
With 100% Science you can get some resources pretty often, but I didn't try "ultimate disassembler" with 300% Science though.
thing about slaveing is now slaves have a limit to how much they can mine. once they reach there max cw.(which is when they start to walk instead of run) they will make the mineing animation but wont get any ores.
Slaves almost all have a carry weight higher than a 10str char (130 something) and they start to walk the second you give them orders and wander back to where you gave them orders when they are finished. I've never seen a slave run once given mining orders.