Harmons Valley and Mount Oliphant are captive suppliers to the Clarendon refinery. Mine output is accordingly dictated by refinery demand. Refinery production of 1.5Mt/a requires mine output of about 3.9Mt/a. The expansion of the refinery to 2.7Mt/a would require mine output to rise to about 7.2Mt/a. Wood Mackenzie’s asset reports are built from the bottom up, incorporating a number of granular data metrics to ultimately produce our industry standard cash operating costs. This report contains a detailed asset note giving you a holistic view of the asset, including an operational overview through to a timeline of events from inception to now. This qualitative analysis is supplemented by the associated Excel download which enables interrogation of a whole series of cost and production metrics over the life of the asset.