This Is How People Mine Huge Diamonds & Gems Hidden Deep Underground With Worth Over $100 Billion
0:21. Ceylon Gem Mining Journey
4:02. Sri Lankan Gem Mining
15:17. Greenland Ruby Mining Marvel
16:19. Canada's second diamond mine
18:33. Diamond Mining in Sierra Leone
19:50. World’s Largest Square Emerald Cut Diamond
21:19. How emeralds are mined?
23:27. Ruby Abundance in Mozambique
25:32. Blasting Ceneri base tunnel
29:42. Long wall mining
33:29. Journey into Argyle Depths
37:54. The complete Joy low-seam longwall system
41:02. The coal train car
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