Kloof-Driefontein Complex (KDC) Technical Short Form Report 31 December 2011
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Kloof-Driefontein Complex (KDC) Technical Short Form Report 31 December 2011 2 Salient features ¨ Mineral Resources at 63.8 Moz (excluding Tailing Storage Facility ounces of 3.7 Moz). ¨ Mineral Reserves at 13.7 Moz (excluding Tailing Storage Facility ounces of 2.9 Moz). ¨ Safe steady state production strategy driving quality volume. ¨ Accelerate extraction of higher grade Mineral Reserves to bring value forward. ¨ Optimise surface resources extraction strategy. ¨ Long-life franchise asset anchoring gold production to 2028 (17 years). The KDC has a world class ore body with long-life Mineral Resources and Mineral Reserves (17 years) which has produced in excess of 181 Moz from the renowned Witwatersrand Basin, the most prolific gold depository in the world. Geographic location KDC West Mining Right KDC East Mining Right Carletonville Pretoria Johannesburg Welkom Kimberley Bloemfontein Durban KDC East = Kloof G.M. Port Elizabeth KDC West = Driefontein G.M. Cape Town Gold Fields: KDC Gold Mine – Technical Short Form Report 2011 3 Geographic location IFC 1. Overview 1. Overview Page 1 Gold Fields Limited owns a 100% interest in GFI Mining South Africa (Pty) Limited (GFIMSA), which holds a 100% interest in KDC (Kloof- 2. Key aspects Page 2 Driefontein Complex). The mine is situated between 60 and 80 kilometres west of 3. Operating statistics Page 3 Johannesburg near the towns of Westonaria and Carletonville in the Gauteng Province of Page 4 South Africa. KDC is a large, well-established 4. Geological setting and mineralisation shallow to ultra-deep level gold mine with workings that are accessed through, 12 shaft 5. Mining Page 7 systems (five business units – BU’s) that mine various gold-bearing reefs from open ground 6. Projects Page 9 and pillars that occur at depths between 600 and 3,347 metres below surface. The shaft systems include 10 sub-vertical shafts and two 7. Mineral processing Page 11 tertiary shafts. Ore extracted from the gold bearing reefs is processed at two metallurgical 8. Sustainable development Page 12 plants. 9. Mineral Resources and Mineral Reserves Page 13 The formation of KDC was designed to create an environment of uniformity, alignment and cohesion that will enhance the singular identity 10. Regulatory codes Page 18 that will underpin the new consolidated operation. The overall strategy of the 11. Competent Persons Page 18 amalgamation of the two mines was to improve operational and financial efficiencies in line with Gold Fields’ long-term stated vision, “To be the Page 22 12. Brief history global leader in sustainable gold mining”, which encompasses safety and human capital as well 13. Key technical staff Page 23 as the environmental and social licence to operate. During the past 12 months KDC produced 1.1 Moz of gold from a combination of underground mining and processing of surface waste rock dump material. KDC employees costed for the period was 26,685 including contractors. The area mined averaged some 62,888 m2 per month, underground ore processed at 400 kt per month and surface material treated 501 kt per month. Total gold production averaged some 2,852 kg per month at an average yield grade of 3.2 g/t. Significant increases in power, consumables and labour costs have limited the benefit of an increased gold price with the effect that pay limits show a slight increase year-on-year. This Technical Short Form Report reflects the latest Life of Mine plan input parameters, coupled with an updated Mineral Resource and Mineral Reserve statement, as at 31 December 2011. The geological and evaluation models have been updated to reflect the latest available data. These models are coupled with an integrated and holistic mine design and schedule that is based on current performance levels and attempts to take cognisance of the inherent risks associated with deep level mining. All Mineral Resource and Mineral Reserve figures reported are managed unless otherwise stated and Mineral Resources are inclusive of Mineral Reserves. Cover image: KDC East 7 Shaft Complex Note: For abbreviations refer to page 28 and for glossary of terms refer to page 29 – “Mineral KDC West No 1 Metallurgical Plant No 1 Metallurgical KDC West Resources and Mineral Reserves Overview 2011”. 1 2. Key aspects Night photograph of KDC East 8 Shaft Independent audit Figures reported in this declaration are as reviewed by independent external consultants as at 31 December 2011 (Optiro Pty Limited). Gold Fields has been informed that the audit identified no material shortcomings in any process by which the KDC Mineral Resources and Mineral Reserves were evaluated Prepared by Gold Fields Limited in compliance with the SAMREC Code (2007 edition) Effective date 31 December 2011 Source of information This Technical Statement is a summary of the detailed internally sourced document entitled December 2011 Kloof Competent Persons report and December 2011 Driefontein Competent Persons Report Personal inspection Personal inspection is conducted by the Competent Persons as listed, who are full-time employees of Gold Fields Limited General location KDC is situated 60 to 80 km west of Johannesburg at latitude 26º 24’ S and longitude 27º 30’ E between Westonaria and Carletonville in the Gauteng Province of South Africa. The site is accessed via the N12 highway between Johannesburg and Potchefstroom with a well developed network of tarred roads that surround the area Licence status and KDC is entitled to mine all declared Mineral Resources and Mineral Reserves and has all the necessary holdings statutory mining rights in place. Kloof Gold Mine (KDC East) and Driefontein Gold Mine (KDC West) have new order mining rights in respect of the mining area totalling 28,648 hectares. GFI Mining South Africa (Proprietary) Limited (GFIMSA) holds a 100% interest in KDC. Gold Fields Limited holds a 100% interest in GFIMSA. The tenor of the mining right at KDC West is 25 years and at KDC East 15 years Operational infrastructure KDC is a large, well-established shallow to ultra deep level gold mine that is accessed from surface through a number of shafts to its lowest working levels some 3,347 m below surface. It comprises twelve producing shaft systems that mine different contributions from open ground and pillars, and five metallurgical plants. Climate No extreme climatic conditions are experienced that may affect mining operations Deposit type Gold mineralisation occurs within laterally extensive quartz pebble conglomerate horizons called reefs, which are developed above unconformable surfaces within a depositional system near the basin margin. KDC exploits three primary reefs namely the Carbon Leader Reef (CL), Ventersdorp Contact Reef (VCR) and Middelvlei Reef (MR) with the CL representing the majority of the current Mineral Reserves in the west of the mining right and the VCR representing the majority of the current Mineral Reserves in the east of the mining right Life of Mine (LoM) It is estimated that the current Mineral Reserves will be depleted in 2028 Environmental/Health KDC systems, procedures, training etc. are at international best practice levels. KDC obtained its & Safety ISO 14001:2004 certification in 2008, and has maintained its certification since then. The mine has full compliance status for the International Cyanide Management Code with certification awarded in September 2009 Reporting codes Gold Fields reports its Mineral Resources and Mineral Reserves in accordance with the South African Code for the Reporting of Exploration Results, Mineral Resources and Mineral Reserves (2007 SAMREC Code), and other relevant international codes such as SEC Industry Guide 7, JORC Code and NI 43-101. The Mineral Resources and Mineral Reserves are underpinned by an appropriate Mineral Resource Management process and protocol to ensure adequate corporate governance in respect of the intent of the Sarbanes-Oxley Act Gold Fields: KDC Gold Mine – Technical Short Form Report 2011 2 3. Operating statistics Dec Dec June June June Units 2011 20101 2010 2009 2008 Surface mining Total mined kt 6,017 2,432 5,085 4,001 3,720 SRD material to plant (screened) kt 6,017 2,432 5,085 4,001 3,720 SRD Head grade g/t 0.8 0.7 0.8 0.7 0.8 Underground mining Ore mined kt 3,237 1,898 3,913 4,096 4,678 Mined grade g/t 10.8 11.4 10.8 11.9 12.5 Primary development km 45.0 23.9 46.8 42.9 61.1 Advanced km 7.7 4.0 7.5 7.8 10.7 Primary reef development Value cm.g/t 2,100 2,041 2,028 1,344 1,462 Processing – Underground tonnes kt 4,814 2,720 5,298 5,535 6,214 – Surface tonnes kt 6,017 2,432 5,085 4,001 3,720 Total tonnes treated kt 10,831 5,152 10,383 9,536 9,934 – Mill head grade (underground)2 g/t 6.5 6.8 7.0 8.0 8.5 – Mill head grade (surface) g/t 0.8 0.7 0.8 0.7 0.8 Total head grade g/t 3.3 3.9 3.9 5.0 5.7 Underground g/t 6.3 6.6 6.8 7.8 8.2 – Yield Surface rock dumps g/t 0.7 0.7 0.8 0.7 0.9 Combined yield g/t 3.2 3.8 3.8 4.8 5.5 Underground % 97 97 97 97 97 Plant recovery factor Surface rock dumps % 92 92 92 92 92 Gold produced Underground kg 30,105 17,931 35,757 42,974 51,178 Surface rock dumps kg 4,113 1,787 3,943 2,838 3,220 koz 1,100 634 1,277 1,473 1,749 Total gold produced kg 34,218 19,719 39,700 45,812 54,398 Gold sold koz 1,100 634 1,277 1,473 1,749 Financial R/kg 227,210 200,037 192,765 146,184 104,398 Underground R/t 1,424 1,319 1,301 1,135 860 Operating cost R/kg 146,292 124,978 92,739 117,338 85,924 Surface R/t 100 92 72 83 74 R/kg 219,642 190,973 176,819 137,298 98,230 Total cash cost R/t 694 731 676 660 538 US$/oz 946 832 726 474 420 R million 2,300 1,266 2,244 1,993 1,914 Capital expenditure R/kg 67,216 64,192 56,524 43,504 35,187 US$/oz 289 280 232 150 151 R/kg 285,017 257,391 239,305 187,883 138,546 Notional cash expenditure (NCE) US$/oz 1,228 1,121 982 648 593 General Employees (TEC) number 26,685 31,086 32,772 31,778 33,136 Mineral Reserves* Mt 69.2 96.4 116.6 128.4 131.4 Mineral Reserve Head Grade* g/t 6.1 6.5 7.1 7.0 7.3 Mineral Reserves* Moz 13.7 20.2 26.7 28.7 30.8 Expected Life of Mine years 17 30 32 31 33 1 Figures shown represent the six months to 31 December 2010.