mining
3 mines
extraction tech
hiring sign
4 furnaces
professional equipment
better working conditions
get up to 7 mines and do not buy any more mines. Bonuses make 5-10 mines more than enough and you don't want to spend ppl.
Buy everything else as soon as you can
use converter to get assembly and spam assembly 10/s mechanism is good but more is better
keep bying untill ore evaluation
SKIP child labour
technological research
FILE FOR BANKRUPTCY
Should be the fastest loop. There might be optimizations but the general idea is get working conditions ASAP and stop bying mines since manpower is actually the most expensive resource. here is why:

Notice that I spammed all resources, but manpower is still at 4/s that's because there are no upgrades besides hiring sign and working conditions. Which makes them both the most powerfull upgrades.