https://theconversation.com/amp/what-coltan-mining-in-the-drc-costs-people-and-the-environment-183159 have you given any stats to coltan miners yet?
https://theconversation.com/amp/what-coltan-mining-in-the-drc-costs-people-and-the-environment-183159 have you given any stats to coltan miners yet?
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