If you're worried about these children losing their wonderful life in the mines, feel free to support them through other means.
Make it your life's work to spread awareness, bring aid to the affected countries, and support their development - you only enslave yourself by learning to do absolutely nothing against what you see as oppressive.
And getting companies that profit off of these children to support them would likely be fair. Apple, Google, and many others can handle the hit.
When you put it that way, I guess we better hand over thousands every year to Apple for the new iPhone. Wouldn't want a child slave to be unemployed.
Buy 10,000 disposable vapes every year while you're at it (if you really care). Maybe a couple cents will trickle down to the children you claim to care about.