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Re:Children work in Congolese mines where cobalt is extracte... by sanxiyn on Wednesday August 09, 2017 @12:19AM (#14965512)
USGS Minerals Information has some basic numbers: https://minerals.usgs.gov/minerals/pubs/commodity/cobalt/

Choice quotes: "Congo continued to be the world's leading source of mined cobalt, supplying more than one-half of world cobalt mine production... World cobalt consumption is driven mainly by strong growth in the rechargeable battery and aerospace industries... China was the world's leading consumer of cobalt, with nearly 80% of its consumption being used by the rechargeable battery industry."

So those basic facts are correct. Data on working condition of Congolese cobalt mine is much harder to get. On the other hand, it could have been misleading for following reasons, say, only small amount of cobalt is produced in Congo, or only small amount of cobalt is used for high-tech batteries. But this time, both are not the case.

Re:Children work in Congolese mines where cobalt is extracte... by samstave on Wednesday August 09, 2017 @02:23AM (#14966022)
Is it the leader due to in-ground cobalt supply/Capacity or due to number of slaves mining it and cost of slaves to mine required amount vs cost of slaves in other locales?
Re:Children work in Congolese mines where cobalt is extracte... by sanxiyn on Wednesday August 09, 2017 @03:19AM (#14966236)
It is due to reserve distribution. It just happens that the richest cobalt reserve on the Earth found so far is located at Mukondo, Katanga, Congo.