57 Westgold Resources Limited Annual Report 2023 2. S UMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) (g) Financial Instruments (continued) Gains or losses on liabilities held for trading are recognised in the statement of profit or loss and other comprehensive income. Loans, borrowings, and trade and other payables After initial recognition, interest-bearing loans and borrowings and trade and other payables are subsequently measured at amortised cost using the EIR method. Gains and losses are recognised in the statement of comprehensive income when the liabilities are derecognised, as well as through the EIR amortisation process. Amortised cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The EIR amortisation is included as finance costs in the statement of comprehensive income. This category generally applies to interest-bearing loans and borrowings and trade and other payables. (h) Inventories Inventories are valued at the lower of cost and net realisable value. Cost includes expenditure incurred in acquiring and bringing the inventories to their existing condition and location and is determined using the weighted average cost method. (i) Borrowing costs Borrowing costs directly attributable to the acquisition, construction or production of a qualifying asset (i.e. an asset that necessarily takes a substantial period of time to get ready for its intended use or sale) are capitalised as part of the cost of that asset. All other borrowing costs are expensed in the period they occur. Borrowing costs consist of interest and other costs that an entity incurs in connection with the borrowing of funds. (j) Rehabilitation costs The Group is required to decommission and rehabilitate mines and processing sites at the end of their producing lives to a condition acceptable to the relevant authorities. The expected cost of any approved decommissioning or rehabilitation programme, discounted to its net present value, is provided when the related environmental disturbance occurs. The cost is capitalised when it gives rise to future benefits, whether the rehabilitation activity is expected to occur over the life of the operation or at the time of closure. The capitalised cost is amortised over the life of the operation and the increase in the net present value of the provision for the expected cost is included in financing expenses. Expected decommissioning and rehabilitation costs are based on the discounted value of the estimated future cost of detailed plans prepared for each site. Where there is a change in the expected decommissioning and restoration costs, the value of the provision and any related asset are adjusted, and the effect is recognised in profit or loss on a prospective basis over the remaining life of the operation. The estimated costs of rehabilitation are reviewed annually and adjusted as appropriate for changes in legislation, technology or other circumstances. Cost estimates are not reduced by potential proceeds from the sale of assets or from plant clean up at closure. (k) Property, plant and equipment Property, plant and equipment is stated at historical cost less accumulated depreciation and any impairment in value. Capital work-in-progress is stated at cost and comprises all costs directly attributable to bringing the assets under construction ready to their intended use. Capital work-in-progress is transferred to property, plant and equipment at cost on completion. Depreciation is calculated on a straight-line basis over the estimated useful life of the asset, or where appropriate, over the estimated life of the mine. Major depreciation periods are: – Mine specific plant and equipment is depreciated using – the shorter of life of mine and useful life. Useful life ranges from 2 to 25 years. – Buildings – the shorter of life of mine and useful life. Useful life ranges from 5 to 40 years. – Office plant and equipment is depreciated at 33% per annum for computers and office machines and 20% per annum for other office equipment and furniture. Impairment The carrying values of property, plant and equipment are reviewed for impairment when events or changes in circumstances indicate the carrying value may not be recoverable. For an asset that does not generate largely independent cash inflows, the recoverable amount is determined for the cash-generating unit to which the asset belongs. If any such indication exists and where the carrying values exceed the estimated recoverable amount, the assets or cash-generating units are written down to their recoverable amount. Refer to Note 2(o) for further discussion on impairment testing performed by the Group. Derecognition An item of property, plant and equipment is derecognised upon disposal or when no future economic benefits are expected to arise from the continued use of the asset.
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