Emerald and copper mining, Zambia
Emeralds, Zambia
Emerald mining, Zambia
Copper refinery
Near Geita gold mining area, Tanzania
Mara, Tanzanite Mine, Tanzania
Busia, Kenya
Photos
Emerald and copper mining, Zambia
Near Geita gold mining area, Tanzania
Mara, Tanzanite Mine, Tanzania
Busia, Kenya
Anja Benshaul-Tolonen 
Very nice, humanizing photos. We don’t always see the human faces of those who extract the precious metal from the Earth.