In 2020, OZ Minerals released the Carrapateena Block Cave Expansion Prefeasibility Study (PFS) for the expansion of its Sub Level Cave mine to a 12 Mtpa Block Cave mine (OZ Minerals, 2020). The PFS focused on embedding OZ Minerals’ balanced view of ‘Risk’ as both Threats and Opportunities, with a focus on mitigating or realisation activities for Material Risks that create value to OZ Minerals’ five Stakeholder pillars – employees, suppliers, communities, government and shareholders.
To assess value, the study began with an exploration of the Material Risks. This included both quantitative and qualitative valuations using the perspectives of the five Stakeholder pillars. This focus reinforced holistic value creation across a broad range of stakeholders and throughout the life of the proposed Block Cave expansion to determine the best value, as opposed to taking a more traditional economic Net Present Value (NPV) valuation in isolation.