Consumable stores are measured at the lower of cost and net realisable value. The cost of consumable stores is based on the weighted average cost principle, and includes expenditure incurred in acquiring the inventories, production or conversion costs and other costs incurred in bringing them to their existing location and condition. Gold in process is measured at the lower of cost and net realisable value. The cost of gold in process includes an appropriate share of production overheads based on normal operating capacity and is valued on the weighted average cost principle. Net realisable value is the estimated selling price in the ordinary course of business, less the estimated costs of completion and selling expenses.
