If you think that just because a mine isn't in Africa that means it's a good place to work then I disagree
There are mines I wouldn't work in, there are many mines I'd have no issue working in.
Which mines have you you worked in and what was your role?
Granted, maybe there are good mines out there, but I still think commercial extraction of resources is almost surely damaging to its surrounding environment. You can justify that for some useful material, but it's hard to justify it for diamonds.
Mining in general I view as a somewhat neccesary evil that needs to made humane for workers and as something driven by unthinking consumption, the remedy lies upstream from mines in the mindsets of populations that demand resources.
Resource extraction can't be eliminated but it can be reduced, as should population numbers.