Overview
On June 10, 2026, the Responsible Minerals Initiative (RMI) released an official statement regarding the coltan report published by Global Witness.
While expressing concern over the security and human rights situation in the eastern Democratic Republic of the Congo (DRC), the RMI pointed out limitations in the analytical methodology applied in the report.
Key Takeaways
1. Background on Coltan and the Conflict Minerals Issue
Coltan: The raw material for tantalum, which is a critical component in electronic devices such as smartphones and electric vehicle (EV) batteries.
Conflict Risks: Armed groups have taken control of the Rubaya mines in the Democratic Republic of the Congo (DRC), which supply approximately 15% of the global tantalum demand. Minerals extracted from this region are being used to finance conflicts and are associated with severe human rights abuses, driving the international community to strictly tighten "responsible minerals" regulations.
2. Issues Raised by the Global Witness Report
Global Witness has raised concerns regarding the effectiveness of current traceability systems through its latest coltan report.
Report Details: The report claims that thousands of tons of illegally mined coltan from the DRC are being smuggled into Rwanda, falsely labeled as Rwandan origin, and subsequently introduced into the global supply chain.
Reliability of Smelter Assessments: The report also pointed out that while some smelters sourcing Rwandan coltan between 2024 and 2025 received RMI conformant status, there is a possibility that some of these facilities processed conflict coltan.
3. RMI's Response
The RMI noted that the significant production volume and market dynamics of the Rubaya region, combined with international awareness of the illegality of these minerals, create strong incentives to bypass or undermine official trading systems. Therefore, the RMI emphasized the need for a heightened level of vigilance.
4. Measures Taken by the RMI
To address these risks, the RMI has taken the following measures over the past three years:
Additionally, the RMI highlighted the critical role of civil society organizations in identifying potential risks and raising issues related to illicit trade, stating that it has continuously encouraged vigilance and information sharing by NGOs.
5. Position on the Global Witness Report
Over the past several months, the RMI has requested actionable data from Global Witness, explicitly pointing out the methodological limitations of their report during this process. The RMI concluded that the fragmented trade and shipping data relied upon by the report is insufficient to reliably verify the origin, time of extraction, and production conditions of the minerals.
In contrast, the RMI's assessments are based on the 'Chain of Custody' across the entire supply chain, from mine to smelter. They are consistently and independently reviewing due diligence elements and supply chain data, and plan to continue taking follow-up actions regarding any raised allegations or new information.
In conclusion, the RMI evaluated that the Global Witness report lacks substantiation in terms of methodology and specificity, making it unlikely to contribute constructively to resolving the issues moving forward.
Conclusion
As such, the RMI sympathizes with the urgency of the coltan risks expressed by civil society and various stakeholders, reaffirming its commitment to responsible sourcing.
They added that they will continue proactive monitoring and risk response utilizing their internal assessments and systems, and welcome ongoing dialogue to build a responsible supply chain.
MDSKorea will always strive to deliver useful information. Thank you.
[Glossary]
| Term | Description |
|---|
| Coltan | An ore containing tantalum.
When refined, it serves as the raw material for tantalum used in electronic devices, etc. |
| Global Witness | An international NGO that investigates and exposes issues concerning natural resources, conflict, and corruption. |
| Rubaya | A major coltan-producing region in the eastern Democratic Republic of the Congo (DRC). |
| NGO | Non-Governmental Organization. A private organization, unaffiliated with any government, that independently investigates and monitors public interest issues. |
| Chain of Custody | A system that tracks and manages the movement path of minerals from the mine to the smelter. |
| RMI | Responsible Minerals Initiative.
A mineral supply chain due diligence organization with over 500 participating companies. |
| OECD Due Diligence Guidance | International standards for the responsible sourcing of minerals from conflict-affected and high-risk areas. |
[References]
Overview
On June 10, 2026, the Responsible Minerals Initiative (RMI) released an official statement regarding the coltan report published by Global Witness.
While expressing concern over the security and human rights situation in the eastern Democratic Republic of the Congo (DRC), the RMI pointed out limitations in the analytical methodology applied in the report.
Key Takeaways
1. Background on Coltan and the Conflict Minerals Issue
Coltan: The raw material for tantalum, which is a critical component in electronic devices such as smartphones and electric vehicle (EV) batteries.
Conflict Risks: Armed groups have taken control of the Rubaya mines in the Democratic Republic of the Congo (DRC), which supply approximately 15% of the global tantalum demand. Minerals extracted from this region are being used to finance conflicts and are associated with severe human rights abuses, driving the international community to strictly tighten "responsible minerals" regulations.
2. Issues Raised by the Global Witness Report
Global Witness has raised concerns regarding the effectiveness of current traceability systems through its latest coltan report.
Report Details: The report claims that thousands of tons of illegally mined coltan from the DRC are being smuggled into Rwanda, falsely labeled as Rwandan origin, and subsequently introduced into the global supply chain.
Reliability of Smelter Assessments: The report also pointed out that while some smelters sourcing Rwandan coltan between 2024 and 2025 received RMI conformant status, there is a possibility that some of these facilities processed conflict coltan.
3. RMI's Response
The RMI noted that the significant production volume and market dynamics of the Rubaya region, combined with international awareness of the illegality of these minerals, create strong incentives to bypass or undermine official trading systems. Therefore, the RMI emphasized the need for a heightened level of vigilance.
4. Measures Taken by the RMI
To address these risks, the RMI has taken the following measures over the past three years:
Provided additional guidance for smelters and auditors
Operated customized training programs
Additionally, the RMI highlighted the critical role of civil society organizations in identifying potential risks and raising issues related to illicit trade, stating that it has continuously encouraged vigilance and information sharing by NGOs.
5. Position on the Global Witness Report
Over the past several months, the RMI has requested actionable data from Global Witness, explicitly pointing out the methodological limitations of their report during this process. The RMI concluded that the fragmented trade and shipping data relied upon by the report is insufficient to reliably verify the origin, time of extraction, and production conditions of the minerals.
In contrast, the RMI's assessments are based on the 'Chain of Custody' across the entire supply chain, from mine to smelter. They are consistently and independently reviewing due diligence elements and supply chain data, and plan to continue taking follow-up actions regarding any raised allegations or new information.
In conclusion, the RMI evaluated that the Global Witness report lacks substantiation in terms of methodology and specificity, making it unlikely to contribute constructively to resolving the issues moving forward.
Conclusion
As such, the RMI sympathizes with the urgency of the coltan risks expressed by civil society and various stakeholders, reaffirming its commitment to responsible sourcing.
They added that they will continue proactive monitoring and risk response utilizing their internal assessments and systems, and welcome ongoing dialogue to build a responsible supply chain.
MDSKorea will always strive to deliver useful information. Thank you.
[Glossary]
When refined, it serves as the raw material for tantalum used in electronic devices, etc.
A mineral supply chain due diligence organization with over 500 participating companies.
[References]
Who buys Rwanda’s smuggled coltan? The global journey of conflict coltan from DRC to the world's electronics