Forbes article on Congo working conditions and exploitation of child labor. While this is about cobalt, not copper, the paralells are palpable. Articles like this is why the Congo has earned it's reputation.
Unfortunately, in world opinion, Ivanhoe is tarred by the same brush, regardless of whether it is valid or not.
https://www.forbes.com/sites/jamesconca/2018/09/26/blood-batteries-cobalt-and-the-congo/#5e79287acc6e