My great-great-grandfather had siblings, and cousins, who were involved in mining in Australia (as was his father), at least two of whom were killed in mining accidents (although I don't think those incidents qualified as "disasters"), and I've just created a profile for a young Scottish immigrant to Australia who died when the drive he was in collapsed on him and two others, burying them alive. The news reports don't say if the other men had wives and children, but all three had mothers, and fathers, who were left to grieve. I haven't (yet) found the results of the Coroner's inquest to know if anyone was held accountable - but probably not. It was the 1860s, after all.
If I get a chance I will take a look and see if I can help with your shilling penny-farthing miners. Even one profile would be one profile someone else won't need to create.