Our baseline audit program conducted by our Group Internal Audit function provides internal assurance around the application and effectiveness of key elements of our vetting and contracting requirements. Further, we track LTIF (Lost Time Injury Frequency) for our subcontractors as the key indicator for the effectiveness of our actions to mitigate potential negative health & safety impact to supply chain workers. LTIF is the frequency of incidents relative to the activity level measured as worked hours by subcontractors.