Driefontein Gold Mine Technical Short Form Report Driefontein Gold Mine is a large, well-established shallow to ultra-deep level gold mine with workings that are accessed through eight shaft systems that mine various gold bearing reefs from open ground and pillars that occur at depths between 600 and 3,300 metres below surface. The shaft systems include fi ve sub-vertical shafts and two tertiary shafts. Ore extracted from the gold bearing reefs is processed at three metallurgical plants. Annual mill throughput of approximately 6 million tons of ore is mined to produce approximately 830 koz of gold. This Technical Short Form Report refl ects the latest Life of Mine plan, coupled with an updated Mineral Resource and Mineral Reserve statement, as at 30 June 2009. The geological and evaluation models have been updated to refl ect 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 endeavours to take cognisance of the inherent risks associated with deep level mining. Driefontein has undertaken a review of the safe extraction of all remnant pillar mining and consequently selected higher risk remnants and/or pillars have been excluded from the plan. Signifi cantly increased power, consumables and labour costs have offset the increased gold price revenues, with the effect that paylimits show only nominal reductions year-on-year despite increased gold prices for Mineral Resources and Mineral Reserves respectively. All Mineral Resource and Mineral Reserve fi gures reported are managed unless otherwise stated and Mineral Resources are inclusive of Mineral Reserves. Salient Features • World class orebody with long life Mineral Resources of 52.8 Moz (excluding Tailing Storage Facility ounces). • Mineral Reserves of 18.2 Moz. • Underground uranium models have been generated for Driefontein. • Focus on safe steady state production driving volume, value and quality. • 4 Shaft pillar extraction to commence during Q4 F2010. • Long-life franchise asset anchoring gold production to 2040 (31 years). Driefontein Gold Mine is located in the Far West Rand Goldfi elds, situated in the geologically unique and world renowned Witwatersrand Basin, which remains the most signifi cant gold depository in the history of mining. Geologically the mine is positioned within the richest formations of the Carbon Leader and Ventersdorp Contact Reefs ever found in South Africa. West Driefontein Gold Mine was registered in March 1945 and ultimately became recognised as one of the most prolifi c gold producers in the country. The contiguous East Driefontein was registered in May 1968 and merged with West Driefontein during July 1981 to form a new company, Driefontein Consolidated Limited. Each mine however continued to manage its lease area separately until September 1999 when they amalgamated, pooling their resources to form one mine, the Driefontein Gold Mine, that extends for 12.5 km along strike and 8.5 km on dip. Key Features Independent Audit Figures reported in this declaration are as reviewed and approved by independent external consultants as at 30 June 2009 Prepared by Gold Fields Limited Effective date 30 June 2009 Source of This Technical Statement is a summary of the internally sourced document entitled F2010 Driefontein Competent Information 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 Driefontein is situated some 70 km west of Johannesburg at latitude 26º 24’ S and longitude 27º 30’ E near Carletonville in the Gauteng Province of South Africa. The site is accessed via the N12 highway between Johannesburg and Potchefstroom Licence Status and Driefontein is entitled to mine all declared Mineral Resources and Reserves and has all the necessary statutory mining Holdings rights in place. The Mine has a new order mining right in respect of the mining area totalling 8,561 hectares. GFI Mining South Africa (Proprietary) Limited (GFIMSA) holds a 100% interest in Driefontein. Gold Fields Limited holds a 100% interest in GFIMSA Operational Driefontein is a large, well-established shallow to ultra deep level gold mine that is accessed from surface through a Infrastructure number of shafts to 50 level (the lowest working level) some 3,300 m below surface. It comprises eight producing shaft systems that mine different contributions from pillars and open ground, and three gold 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. Driefontein 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 Life of Mine (LoM) It is estimated that the current Mineral Reserves will be depleted in 2040 Environmental Driefontein systems, procedures, training etc. are at international best practice levels. ISO 14001:2004 certifi cation has been obtained for this operation. The Safety Management System was certifi ed by Bereau Veritas in F2009 for OHSAS 18001. The mine has full compliance status for the International Cyanide Management Code with certifi cation awarded in September 2009 Regulatory 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 a suffi cient Mineral Resource Management process and protocol to ensure adequate corporate governance in respect of the intent of the Sarbanes-Oxley Act 2 Gold Fields has stated that: “If we cannot mine safely, we will not mine”. This principle is embedded at Driefontein. Operating Statistics Geological Setting and Year ended June F2009 F2008 F2007 F2006 F2005 Mineralisation Main development km 20.1 27.5 28.0 27.4 27.8 Driefontein is located in the West Wits Line that Main on-reef development km 4.1 5.8 5.3 4.2 3.8 forms part of the Far West Rand Goldfi elds of Main on-reef development value cm.g/t 926 1,242 1,307 1,454 1,837 the Witwatersrand Basin. Exploration in the Area mined ’000 m2 530 579 653 680 661 Tons milled (Underground & Surface) ‘000 tons 6,217 5,981 6,652 6,867 6,694 area dates from 1898 and mining from 1945 Source of ore when West Driefontein Gold Mine began sinking – Underground ’000 tons 3,137 3,273 3,812 3,867 3,794 the 1 and 2 Shafts. Driefontein exploits three – Yield g/t 7.5 8.1 7.6 8.1 8.3 primary reefs namely the Ventersdorp Contact – Stockpile (Surface) ’000 tons 3,080 2,708 2,840 3,000 2,900 Reef (VCR) located at the top of the Central – Yield g/t 0.7 0.8 1.0 1.4 0.7 Rand Group, the Carbon Leader Reef (CL) – Average yield g/t 4.2 4.8 4.8 5.2 5.4 near the base of the Group and the Middelvlei – Gold produced (Underground & Surface) kg 25,814 28,865 31,618 35,755 36,162 Reef (MR), which occurs stratigraphically some ’000 oz 830 928 1,017 1,150 1,163 50 m to 75 m above the CL. Operating cost – Underground R/ton 1 044 830 653 579 609 – Surface R/ton 83 79 65 60 60 – Total R/ton 568 490 402 352 371 – Gold sold kg 25,814 28,865 31,618 35,755 36,162 – Cash cost US$/oz 448 412 348 315 330 R/kg 129,837 96,293 80,457 64,870 65 884 – Capital expenditure Rm 1 034 1,016 815 543 184 – NCE R/kg 176,838 136,806 110,269 82,872 – Number of employees 16,955 17,210 17,122 16 644 17 018 Expected Life-of-Mine years 31 33 28 27 28 Driefontein 2 Shaft ground works, 16 September 1945 Mineral Reserves million tons 75.2 80.4 80.4 94.6 100.0 Head grade of Mineral Reserves g/t 7.5 7.6 8.3 7.4 7.3 Rounding off of fi gures presented in this report may result in minor computational discrepancies. Where this occurs it is not deemed signifi cant. 3 Local geology Several large dykes contribute to dividing the Ventersdorp Contact Reef packed, large pebble conglomerate bands. West Wits Line into a series of compartments, The VCR represents the fi nal phase of The pebbles are usually up to 30 mm in while the west dipping normal Bank Fault sedimentation prior to the extrusion of diameter, although pebbles up to 60 mm in defi nes the eastern limit of both the CL and the lavas of the Klipriviersberg Group and diameter are occasionally present. the VCR at Driefontein. The faulting in the unconformably overlies the underlying strata area is characterised by easterly striking, of the Witwatersrand Supergroup. This In some areas the MR assemblage is as much strike slip faults with horizontal displacements erosional feature, in conjunction with the as 6 m thick with well developed Top, Middle of up to 450 metres. Pilanesberg, Bushveld structural effects of the Bank Fault, results in and Bottom Bands, separated from each and Ventersdorp age dykes are also present, the elimination of the CL and MR in a V-shaped other by quartzite partings. The pebbles are striking in a northerly direction, with the area closing to the south in the eastern portion well-rounded and are generally of vein quartz.
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