OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and Hig https://www.oecd.org/corporate/mne/mining.htm
The OECD Due Diligence Guidance provides detailed recommendations to help companies respect human rights and avoid contributing to conflict through their mineral purchasing decisions and practices. This Guidance is for use by any company potentially sourcing minerals or metals from conflict-affected and high-risk areas. The OECD Guidance is global in scope and applies to all mineral supply chains.