The Democratic Republic of the Congo (DRC) cobalt mining industry is facing severe allegations of modern slavery, casting a dark shadow over the global clean energy supply chain. Chinese companies, particularly Huayou Cobalt and its subsidiary Congo Dongfang Mining, dominate the cobalt supply chain, connecting directly to major tech firms such as Apple, Tesla, and Samsung.
Harsh Reality in Congo's Cobalt Mines
Thousands of miners in the DRC work under appalling conditions—child labor, below-minimum wages, forced labor, and physical abuse are widespread. Many mines lack basic safety measures, severely endangering miners' health. These miners produce cobalt, a critical raw material for lithium-ion batteries used in electric vehicles (EVs) and smartphones. The surging global demand for these batteries drives cobalt extraction, exacerbating exploitative practices. The DRC is the source of over 70% of the world's cobalt, with a significant portion extracted by artisanal and small-scale miners (ASM), a sector notorious for labor abuses.
Chinese Dominance Over the Supply Chain
Chinese companies process between 70% and 90% of the world's battery metals, from ore refining to precursor production. Huayou Cobalt and China Molybdenum Co., among others, hold direct stakes or long-term off-take agreements in Congo's cobalt resources. These firms operate large mechanized mines and also control ASM-linked intermediaries. The lack of transparency makes it difficult to trace whether ore originates from forced labor sites. The DRC's weak governance, chronic underinvestment in infrastructure, and ongoing armed conflicts further hinder international accountability for these Chinese entities.
Tech Giants Under Pressure
Global corporations like Apple, Tesla, and Samsung rely heavily on cobalt for their products but face difficulty auditing the deepest tiers of the ASM supply chain. Despite adopting policies against conflict minerals and promising to eliminate child labor, actual progress is slow. Reports from 2023 indicated that Apple's suppliers sourced cobalt from mines suspected of forced labor, contradicting the company's public commitments. In the race to scale EV production, cost concerns often trump ethical considerations. The multi-country supply chain—from DRC through South Africa, Zambia, and finally to China—complicates traceability and certification.
Ethical Dilemma and Path Forward
The industry faces a stark paradox: it needs a steady supply of cobalt for the green transition, but the extraction process perpetuates social injustice. NGOs such as Amnesty International call for stricter due diligence and community development programs. Some experts advocate for reducing cobalt content in batteries, e.g., through LFP technology, to reduce dependence on Congolese mines. However, the Chinese supply chain's cost advantage and control will likely persist in the near term, hindering rapid improvements in human rights conditions. Transparent tracking systems, multilateral cooperation, and stronger regulatory enforcement are urgently needed to reconcile clean energy ambitions with ethical sourcing.
The political instability and lack of investment in the DRC not only delay infrastructure upgrades but also thwart attempts to improve working conditions. Only when global enterprises, governments, and civil society work together can the Congo cobalt supply chain shed its modern slavery stigma and move toward genuine sustainability.