Waste rock dumps JSE: R157.33 0.22% NYSE:$8.68 -0.12% GOLD:$2 638/oz -0.30% GOLD:R1 533 458/kg -0.19% USD:ZARR18.08 +0.13% At 19:39pm, 18 Dec 2024 Home » Operations » South Africa » Surface retreatment » Waste rock dumps Overview Production from processing surface-rock dumps, situated across Harmony’s Free State operations, depends entirely on the availability of spare mill capacity at the various operational plants. Waste and waste-rock dump deliveries to the Kusasalethu plant (near the border of Gauteng and North West provinces) supplement mining volumes to secure sufficient backfill to use as support in stoping areas. Waste-rock dumps near Orkney are treated at the Great Noligwa and Mispah plants. Milling of waste-rock dumps at the Doornkop plant, in Gauteng, began in FY18. Waste-rock dumps and tailings facilities acquired with Mponeng are treated at the Mponeng, Kusasalethu and Savuka plants. As at 30 June 2023 Gold Resource: 0.245Moz LoM: ~1 year Operating statistics FY23 Production 1 541kg / 49 544oz Grade 0.392g/t All-in sustaining cost US$1 506/oz Operating performance FY23 The diminishing levels of waste rock available to be treated in certain areas has resulted in lower tonnes milled for these operations in FY23, decreasing 32% to 3.9 million tonnes (FY22: 5.8 million tonnes). The recovered grade for FY23 decreased to 0.392g/t, 2% lower than the 0.399g/t recorded in FY22. This resulted in lower gold production at 1 541kg (49 544oz) in FY23 and was 34% lower than the 2 319kg (74 557oz) recorded in FY22. Revenue for these operations was 24% lower at R1 631 million (FY22: R2 138 million) partially offset by a higher gold price. All-in sustaining cost rose 22% to R859 974/kg due to lower production. Capital expenditure for FY23 increased to R12 million (FY22: R7 million), mainly related to planned maintenance. Outlook for FY24 The priority for FY24 will be to continue safe, profitable production by maintaining costs and improving mining efficiencies.
