Joel is an underground mine operating at a depth of 1,452m. The mine accounted for 7% of Harmony Gold`s 2016 gold production. The operation is technically challenging and future viability depends on the successful completion of the ongoing 137 decline project. 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.