Are there credible investigations into cobalt and rare-earth mining labor rights?

[Joshua66]

I'm researching for a university paper on the intersection of global supply chains and alleged human rights violations, specifically focusing on the mining of cobalt and rare earth minerals. It's incredibly difficult to find verified, on-the-ground reporting that isn't published by either the corporations involved or advocacy groups with a clear agenda. I'm trying to build a balanced understanding of the current conditions and oversight mechanisms, if any exist. Can anyone recommend reputable journalists, academic researchers, or NGOs that produce rigorously sourced investigations into these specific industries? I need credible material to analyze the efficacy of existing corporate social responsibility frameworks versus the reality for workers.