South Deep: A World Class Ore Body In Perspective TIM ROWLAND TIM ROWLAND Group Competent Person 7 April 2014
Forward looking statements Certain statements in this document constitute “forward looking statements” within the meaning of Section 27A of the US Securities Act of 1933 and Section 21E of the US Securities Exchange Act of 1934. In particular, the forward looking statements in this document include among others those relating to the Damang Exploration Target p g g g g p g Statement; the Far Southeast Exploration Target Statement; commodity prices; demand for gold and other metals and minerals; interest rate expectations; exploration and production costs; levels of expected production; Gold Fields’ growth pipeline; levels and expected benefits of current and planned capital expenditures; future reserve, resource and other mineralisation levels; and the extent of cost efficiencies and savings to be achieved. Such forward looking statements involve known and unknown risks, uncertainties and other important factors that could cause the actual results, performance or achievements of the company to be materially different from the future results, performance or achievements expressed or implied by such forward looking statements. Such risks, uncertainties and other important factors include among others: economic business and political conditions in South Africa Ghana Australia Peru and elsewhere; important factors include among others: economic, business and political conditions in South Africa, Ghana, Australia, Peru and elsewhere; the ability to achieve anticipated efficiencies and other cost savings in connection with past and future acquisitions, exploration and development activities; decreases in the market price of gold and/or copper; hazards associated with underground and surface gold mining; labour disruptions; availability terms and deployment of capital or credit; changes in government regulations, particularly taxation and environmental regulations; and new legislation affecting mining and mineral rights; changes in exchange rates; currency devaluations; the availability and cost of raw and finished materials; the cost of energy and water; inflation and other macro-economic factors, industrial action, temporary stoppages of mines for safety and unplanned maintenance reasons; and the impact of the AIDS and other occupational health risks experienced by Gold Fields’ employees health risks experienced by Gold Fields employees. These forward looking statements speak only as of the date of this document. Gold Fields undertakes no obligation to update publicly or release any revisions to these forward looking statements to reflect events or circumstances after the date of this document or to reflect the occurrence of unanticipated events. occurrence of unanticipated events. South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 2
Agenda Agenda • Regional and Local Geology • Regional and Local Geology • Geological Modelling Inputs 3D Seismic Survey 3D Seismic Survey o Surface Drilling Programme o Grade Control and Mine Exploration Drilling Grade Control and Mine Exploration Drilling o • Geological Modelling Procedures • Mineral Resource Estimation Mineral Reso rce Estimation • Mine Design and Planning • Mineral Resource and Mineral Reserve Mi l R d Mi l R • Resource to Reserve Reconciliation • Summary S South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 3
Regional and Local Geology
Regional and Local Geology Depositional Environment Depositional Environment Far West Rand Blyvooruitzicht West Rand Cons. Goldfield Elandsrand Doornkop Cooke Section Cooke Section Ezulwini SOUTH DEEP West Wits Line Kloof Goldfield Driefontein f Mponeng Central Rand Goldfield South Deep A Unique Ore Body In An Area With A 60+ Year Production History South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 5
Local Geology Cross Section Of Ore Body (Linked To Mining Method) Cross Section Of Ore Body (Linked To Mining Method) Subcrop 240m 240m 240m 240m 4-West (4W) 3-West (3W) 2-West (2W) 1-West (1W) WEST EAST C4 C3 C2 C1 Base of Ventersdorp lava VCR 2m VCR VCR MBT MBB MIQ MIT T Targeted reef units d f i MIB 120m MAD Vertical MAC ED ECT ECMQ ECMC ECBQ ECBQ ECB ECBAQ ECBA Target package: 2m 1.5–35m 40 ‐ 70m 20 ‐ 60m 20 ‐ 30m 16 Reef Units Reserve Tonnes 1,325Kt 68,895Kt 80,379Kt 48,988Kt 24,823Kt Reserve Grade 9.45g/t 5.5g/t 5.3g/t 5.1g/t 4.9g/t LoM Tonnage Make ‐ up: 18% of LoM tonnes 49% of LoM tonnes 22% of LoM tonnes 11% of LoM tonnes Mining Method: Horizontal destress; long ‐ hole stoping / drifts and benches South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 6
Ore Body Dictates Mining Method Reserve Designs In Section: Corridor 4 Reserve Designs In Section: Corridor 4 Bench Bench Drift Section view without Section view without C4 resource model C3 C2 C1 South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 7
Ore Body Dictates Mining Method Reserve Designs In Section: Corridor 3 Reserve Designs In Section: Corridor 3 Section view without resource model resource model C4 C3 C2 C1 South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 8
Ore Body Dictates Mining Method Reserve Designs In Section: Corridor 2 Reserve Designs In Section: Corridor 2 Section view without resource model C4 C3 C2 C1 South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 9
Ore Body Dictates Mining Method Reserve Designs In Section: Corridor 1 Reserve Designs In Section: Corridor 1 Section view without resource model resource model C4 C3 C2 C1 South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 10
Geological Modelling Inputs
Geological Modelling Inputs De risking The Ore Body De-risking The Ore Body 3D Seismic Surface drilling LIB Drilling Grade Control Survey (Long Inclined Drilling (2007-2013) Boreholes) (2003) ( ) ( (49,536m) , ) (13,023m) (13,023m) 50m x 50m grid 300m x 300m grid ~20m resolution 600m x 600m grid Covers the whole lease Used for facies Used for facies area south of the wrench area south of the wrench determination structural determination, structural boundaries structural boundaries, structural Used for structural Used for structural fault. Used to confirm the definition, stratigraphic definition, stratigraphic definition, stratigraphic base of lava position as modelling, assaying and modelling, assaying and modelling, assaying and well as major structures. resource estimation. resource estimation. grade indication. Cumulatively covers 78% of the next 4 years of next 4 years of planning 10 - 70 Years Ahead of 10 - 70 Years Ahead of 2 – 10 Years Ahead of 0 – 2 Years Ahead of Current Workings. Current Workings. Current Workings. Current Workings. Good Reconciliation Between Resource Model And Mining South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 12
Geological Modelling Inputs 3D Seismic Survey 3D Seismic Survey ● Raw 3D Seismic data from all available data sets has been combined and reprocessed to produce a single consolidated seismic image of the subsurface strata ● The consolidated seismic volume extends 40km East – West, 16km North –South and reaches depths up to 7km below surface ● The accuracy of the seismic data has been confirmed by drilling results with the majority of reef intersections being within 20m of the modelled depth Base of Ventersdorp lava as per 3D seismic survey Base of Lava Intersected @ ‐ 3081m below surface Macro Geological Structure Confirmed South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 13
Geological Modelling Inputs Surface Exploration Drilling Surface Exploration Drilling Drilling completed by GFI in 2013 (6 • Year Project) The focus was on improving the • confidence in the resource estimate Destress & Massive south of the Wrench fault Mine plan to C2020 A hi Achieved a grid of approximately 600m x d id f i t l 600 • 600m A total of 49,536m were drilled during the • project project 50m x 50m grid drilling The project comprising 9 boreholes • 300m x 300m grid drilling added 72 of 84 planned intersections 600m x 600m grid drilling resulting in 11,635 additional samples g p south of wrench (SoW) South Deep: A World Class Ore Body In Perspective | Tim Rowland, Group Competent Person | 7 April 2014 14
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