I know what you mean, but almost the entire colliery site (apart from the tip) has been redeveloped, mostly light industry and retail. I suspect, though couldn't back it up with figures, that more people are employed across the acreage now than ever were in the heyday. And I also suspect the majority come home safely each day and (hopefully) suffer no long term effects from their labour.
However, working as they do for so many different companies, what has been lost is any sense of community or togetherness. To me, this has been the biggest tragedy, and indeed may be a contributory factor towards some of the selfishness many have bemoaned in recent days ... but that is pure speculation on my part.
Ooo, you sucked me right into that one BL!