Does not mention suppliers, but states "all stakeholders". Also not refered in mineral documents, but an Annual Report. "Complaints and grievancesOur mandatory Group-wide social incident reporting mechanism, which includes complaints and grievances, is designed to ensure openness, accountability and respectfulness in our handling of any stakeholder grievances. The facility is a confidential and secure means for our local communities and other external stakeholders to raise concerns. All submissions are reviewed and responses provided and, where necessary, mitigating actions are implemented. In addition, at Group level, an anonymous tip-off procedure called ‘Speak Up’ allows any of our stakeholders to confidentially report concerns and incidents relating to the integrity of our conduct. Disciplinary proceedings, including termination, are instituted where employees are found to have behaved contrary to our principles. "