Are there ever any of those harsh gases that are released when mines collapse? Maybe, flammable gases?
Of many difficult jobs, I think being a miner is one of the ones that requires a will made of titanium. To go so deep into the Earth and where there are no guarantees of your safety.
They put everybody in the mines after WW2.
And you could breed 18children and afford it, and go on holliday 2 times per year