Overview Driefontein started production in 1952 and has historically produced more than 108Moz of gold. Driefontein is located in the West Wits Line of the Witwatersrand Basin, near Carletonville, approximately 70km west of Johannesburg in the Gauteng province of South Africa. Topography is characterised by moderately undulating plains, classified as Bankenveld, consisting of grassland with livestock farming widespread in the surrounding areas. Driefontein is a large, established, shallow to ultra-deep-level gold mine The current mine infrastructure consists of six producing shaft complexes that mine open ground and pillars (white areas) with the deepest operating level currently some 3,420m below surface (50 Level at 5 Shaft) and three gold processing plants. The principal mining takes place on the Carbon Leader Reef (CLR), which constitutes almost 62% of the Mineral Reserves, the VCR 32%, the Middlevlei Reef (MVR) 6% and the remainder from surface sources. In 2017, underground production at Driefontein of 13,262kg; 426,400oz (2016: 13,920kg, 447,600oz) was 5% lower year-on-year, due to an 8% decline in yield partially offset by a 4% increase in throughput. The decrease in grade was primarily due to lower grades at the Driefontein 5 and 8 shafts, which were expected and in line with plan. Gold production from surface sources decreased by 21% to 1,742kg (2016: 2,210kg), in line with the decline in yield owing to depletion of the higher-grade surface resources. Surface throughput remained steady at 3.9Mt. Locality plan Key statistics 2017 2016 201520142013 PRODUCTION Main developmentm14,12713,45715,70417,37617,751 Area mined000m²321311384375398 Tonnes milledMt6.06.05.85.45.3 Yieldg/t2.52.703.013.313.5 Gold produced/soldkg15,00416,13017,35017,73518,775 000oz482519558570604 COSTS AND MARGINS Operating costsR/t1,022937907916919 – undergroundR/t2,5562,3741,9411,7731,750 – surfaceR/t183182165169165 Operating profitRm1,8733,8343,0022,9173,282 Operating margin%2341363740 Capital expenditureRm1,1551,0529941,1491,023 – sustainingRm235219249465320 – ore reserve developmentRm876779727684703 – projectsRm445418 Total cash costR/kg411,148355,416309,764283,129265,997 US$/oz961753756814862 All-in costR/kg490,893424,872373,752357,333332,660 US$/oz1,1489019121,0271,078 All-in cost margin%828211923 Hoisting and production capacities Operating shaftOperational hoisting capacity (ktpm)Planned production (ktpm)* 110532 1 SV10532 1 T12132 6 SV2612 2165108 4 SV5729 86059 5N/AN/A 5 SV15965 * Planned production is five-year hoisted average from 2018 onwards Plant capacities PlantDesign capacity (ktpm)Current operational capacity (ktpm)Average recovery factor (%)Material treated 1 (CIP)24024096.6UG/SRD 2 (CIP)20018083.9SRD 3 (CIP)1159680.0SRD