Considering the work people have put in the mines, the odds were to their favour in terms of progress. In the Iron mine for example at tunnel 2 on the left, some men took it upon their selves the responsibility to dig through the collapse located in the main branch of the tunnel, exactly in the middle.
The feeling of success when they busted through that tunnel felt indeed overwhelming for the bunch but this mine is hundreds of years old so of course more complications came with it. Luckily no one got hurt, they just met with more old collapses.
Through the main road for example, they found two more new ways to explore. Sounds good and it will eventually prove profitable, but the main tunnel along with the two new ones dug in the sides which they discovered, have a dead end, a collapse.
