Modern Gold Mining Technology And Machines. How To Produce Gold And Jewelry
0:13. Gold mining and production
2:22. Gold catcher
4:25. Gold extracting
7:50. Jewelry production
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Credit:
planetGOLD
[ Ссылка ]
Brazil Minerals, Inc. (BMIX)
[ Ссылка ]
World Gold Council
[ Ссылка ]
Krastsvetmet
[ Ссылка ]
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