**Introduction** Countries can strengthen critical mineral supply chains by spreading supply across more locations, requiring basic checks on how minerals are produced and traded, and enforcing clear environmental and social rules for mining and processing. These steps reduce supply disruptions, improve sourcing reliability, and lower the risk of delays caused by environmental harm or local opposition[1][2][3][4]. **Practical policy actions** **1.** **Reduce reliance on a small number of suppliers** Many supply risks come from heavy reliance on a few countries or facilities, especially for processing and refining[1]. Governments can lower these risks by: * Supporting mining and processing in more countries, rather than depending on a single dominant supplier[1]. * Encouraging long-term supply contracts, which help new projects secure financing while giving buyers more predictable supply[1]. * Expanding recycling, which provides an additional source of materials and reduces pressure on primary supply[5]. These measures reduce the risk that supply disruptions halt production in battery, clean energy, and electronics manufacturing. **2.** **Require basic supply-chain checks and traceability** Companies need reliable information on the origin of minerals and the conditions under which they are produced to meet regulatory requirements, manage operational risk, and satisfy buyer expectations. This is addressed through: * Risk-based due diligence requirements that require companies to identify, assess, and address environmental and social risks across their supply chains[2]. * Traceability systems that allow information on origin and processing to accompany minerals through mining, refining, and manufacturing stages[2][3]. * Independent audits against recognized standards, which reduce reliance on self-reporting and support consistent enforcement[3]. Together, these measures allow firms to screen suppliers more effectively, limit exposure to non-compliance, and maintain access to downstream markets that require verified sourcing. **3.** **Apply clear environmental and social rules to mining and processing** Environmental performance is more consistent when requirements are clearly defined and enforced from the permitting stage through operation. Common elements include: * Limits on emissions, water use, and waste that apply to both mining and processing activities[4]. * Requirements for tailings and waste management, including monitoring, disclosure, and emergency preparedness[4]. * Clear expectations for community engagement and consultation, which reduce disputes that can delay projects or interrupt operations[4]. Consistent enforcement protects local environments and lowers the risk that operations are suspended or closed due to environmental damage or unresolved community conflicts. **Conclusion** Critical mineral supply chains are more reliable and environmentally responsible when countries reduce dependence on single suppliers, require due diligence and traceability, and enforce clear environmental and social rules. Together, these measures reduce disruption risks, improve environmental outcomes, and support long-term investment in mining and processing.
