by Barbara Jones, August 5, 2017 in MailOnline

• Sky News investigated the Katanga mines and found Dorsen, 8, and Monica, 4
• The pair were working in the vast mines of the Democratic Republic of Congo
• They are two of the 40,000 children working daily in the mines, checking rocks for cobalt

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Eight-year-old Dorsen is pictured cowering beneath the raised hand of an overseer who warns him not to spill a rock

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