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Supply chain risk assessment: CAHRA List Methodology

We take a risk-based approach to identify actors in our supply chain that may require enhanced supply chain due diligence. This process is informed by our Conflict-Affected and High-Risk Areas (CAHRA) list, generated using our CAHRA tool. 

For suppliers of metals and minerals, we conduct due diligence in accordance with the 5-Step due diligence framework defined in Annex I of the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas: Third Edition.

  1. Salient human rights risk assessment

    Our methodology is grounded in our salient human rights risks, or those human rights most at risk of severe negative impact from our operations and business activities. See our human rights page to read more about our salient risks and how we have identified them.

    We map a range of internationally recognised indices to each salient risk, such as the Environmental Performance Index, the Civicus Monitor and the Verisk Maplecroft Forced Labour Index. Together, these indices produce a country-level risk rating.
  2. The CAHRA tool

    The CAHRA tool then combines the country-level risk rating with relevant regulatory lists, including the US Dodd-Frank Act and the EU indicative and non-exhaustive CAHRA list for tin, tantalum, tungsten and gold.

    To ensure accuracy and relevance of the resulting CAHRA list to our supply chains, our Group Responsible Sourcing Team makes further manual adjustments to a country’s risk level based on their subject matter expertise.
  3. The CAHRA list

    By applying the CAHRA tool to the risk model based on our salient risks, we generate a list of high-risk countries and regions (the CAHRA list). 

    Suppliers operating in and/or transporting through countries and regions included on the list are subject to enhanced due diligence requirements. The list therefore supports the identification of high-risk suppliers.

    The CAHRA tool and the resulting CAHRA list are reviewed and updated periodically to reflect significant changes in country, regional or commodity-specific circumstances. The most recent update to both the tool and the list was in April 2026.