Overview of the South Deep Project September 2011 Our Vision and - - PowerPoint PPT Presentation
Overview of the South Deep Project September 2011 Our Vision and - - PowerPoint PPT Presentation
Overview of the South Deep Project September 2011 Our Vision and Values To be the global leader in sustainable gold mining 2 Locality Wits Gold Fields Historic production: > 1 600 000 000 oz of gold 4.5bn tons of ore treated at an
Our Vision and Values
2
To be the global leader in sustainable gold mining
Locality – Wits Gold Fields
3
The Witwatersrand Gold Fields
Historic production: > 1 600 000 000 oz of gold 4.5bn tons of ore treated at an average grade of 9.0g/t
Locality – South Deep
4
Well established mining area
Tautona Mponeng Blyvooruitsicht Kusasalethu Ezulwini Cooke
Overview
Outline
Massive underground orebody 81.5 Moz Resource 34.5 Moz Reserve Fully mechanised mine Build-up to 750koz run-rate by end of 2014 Life of Mine of 54 years
5
Capital Programme
Building a world class mine
2010 2011 2012 2013 2014 Status
Refrigeration Plant
Complete
Twin Vent Shaft
On-track
Tailings Storage Facility
Commissioned
Plant Expansion
On-track
New Mine Development
On-track
0.0 0.5 1.0 1.5 2.0 2.5 200 400 600 800
2009 A 2010 A 2011 E 2012 E 2013 E 2014 E Rbn
(oz)
Production (lhs) Capex (rhs)
Production and Capex
History
1950: Prospecting in the area commenced 1961: Production at Western Areas Gold Mine (WAGM) commenced 1999: Placer Dome Western Areas (PDWA) Joint Venture (JV) formed 2000: Name changed to South Deep Gold Mine 2005: Twin Shaft Complex opened 2006: Gold Fields acquired Barrick’s 50% JV interest in the PDWA JV 2007: Gold Fields acquired all remaining WAL shares to own 100% of South Deep Gold
Mine WAL listing terminated
6
0.93 0.07 0.12 0.06 0.4 0.8 1.2 F2008 F2009 F2010 F2011 C2011
Safety
7
Safety Trends
LDIFR
21.29 5.78 2.8 2.4 1.82 5 10 15 20 25 F2008 F2009 F2010 F2011 C2011
SIFR
6.66 2.11 1.1 0.84 1.09 2 4 6 8 F2008 F2009 F2010 F2011 C2011
FIIFR
Our People
- Employ approximately 3,700 people on operation
- Diverse workforce
- Well trained and qualified personnel
- World class medical facilities
- Wellness programme
“24 hours in the life of a miner”
- Organised labour
72% NUM, 15% UASA and 14% non affiliated
8
Sustainable Development
Management of environmental aspects in
line with latest legislative requirements
Environmental Management Systems
according to best practice international standards (ISO14001 certified)
Water Management part of regional strategy International Cyanide Management Institute
(ICMI) compliant
9
Environmental Management
Geology
10
General overview
Geology
11
Vertical slice through the orebody
The primary reef targets are the MB’s and the EC’s
Geology
Surface exploration programme of R173 million
12
Exploration Programme
Surface
Pretoria Group Black Reef Chuniespoo rt Group
Base at ± 1800mbc
VCR
Klipriviersber g Group
Base at ± 3000mbc
Upper Elsburg s
D7 D 8 Orig. D1 D2 D3 D4 D 5 D 6
Resources
Tonnes (Mt) Grade (g/t) Gold (‘000 oz) Classification Dec 10 Jun 10 Jun 09 Dec 10 Jun 10 Jun 09 Dec 10 Jun 10 Jun 09 Underground Measured 41.5 40.5 41.6 7.7 7.4 7.4 10,331 9,684 9,890 Indicated (AI) 250.5 125.7 125.9 6.6 8.7 8.7 53,523 35,016 35,038 Total Above Infrastructure 292.0 166.2 167.5 6.8 8.4 8.3 63,854 44,700 44,928 Indicated (BI) 42.3 92.6 92.6 7.0 6.3 6.3 9,568 18,898 18,898 Total Below Infrastructure 42.3 92.6 92.6 7.0 6.3 6.3 9,568 18,898 18,898 Grand Total 334.3 258.8 260.1 6.8 7.6 7.6 73,422 63,598 63,826 13
Measured & Indicated Resources
Resources
Tonnes (Mt) Grade (g/t) Gold (‘000 oz) Classification Dec 10 Jun 10 Jun 09 Dec 10 Jun 10 Jun 09 Dec 10 Jun 10 Jun 09 Underground Inferred AI 17.2 78.0 78.0 6.3 5.8 5.8 3,460 14,566 14,566 Inferred(BI) 21.8
- 6.5
- 4,572
- Grand Total
39.0 78.0 78.0 6.4 5.8 5.8 8,032 14,566 14,566 14 Tonnes (Mt) Grade (g/t) Gold (‘000 oz) Grand Total 373.3 336.8 338.1 6.8 7.2 7.2 81,454 78,164 78,392
Inferred Resources Total Measured, Indicated & Inferred Resources
Resources
40 80 120 160 200 240 280
Approximately one third of those of Gold Fields, AngloGold Ashanti and Barrick Resources (Moz)
______________________ Source: Goldval.com as at September 2010
Mining Philosophy
16
Mining a massive orebody at depth
Large backfilled stope
Mechanisation
Mechanisation De-stress mining Backfilling
Mine Design and Scheduling
17
Reserving a great orebody
Trackless Drifts & Benches Conventional Drifts & Drives Longhole Stoping Down Dip Accessed Destressing Conventional Destress Stoping Apparent Dip Drifts & Drives with Benching Conventional Composite Mining Conventional Breast Mining
Bench access
Mining direction
Drift access Bench mining
Mining direction
Primary drift mining
1 3 2
Mining Methods – Drift and Bench Mining
Bench access
Main-access-drive
2.2m
Recently filled stoping drive
Stoping-drive
1
Stoping-drive mining
3 Stoping-drive completion 2
Advance stope-access-drive
Mining Methods – Destress Mining
1 2
- Longhole stope access
Slot development
Slot raise
3 4 5
Slot development Stoping Stoping
Completed slot Slot access
- Mining Methods – Longhole stoping
Development towards the Wrench fault (105 & 105 levels) Build-up in Phase-1 NoW 105 Development of intake and conveyer infrastructure
Current to October 2015
Mine Design and Scheduling
Current to Jan 2019
Destress mining accessed from 105 Level South of the Wrench fault Continuation of the Phase-1 NoW at ~220Kt/m 105 SoW commence Jan 2013 110 Level Decline to SoW commence in October 2012
Mine Design and Scheduling
Infrastructure development on 95 and 93 levels to access the Eastern portion of Phase-1 SoW (Block-A) Start date Jan 2023
Current to Jan 2035
Stoping on the four corridors South of Wrench (West Block-B) 110 Level mining reaching SoW in 2020
Mine Design and Scheduling
Stoping in the Eastern portion of Phase-1 SoW (Block-A) Stoping in Phase-2 VCR mining
Current to Jan 2050
Mine Design and Scheduling
Completion of Phase-2
Current to Dec 2067
Completion of Phase-1 SoW (Block – A)
Mine Design and Scheduling
Final Extraction (April 2064)
VCR Pillar extraction Retreat mining in original access areas
Mine Design and Scheduling
Reserves
Tonnes (Mt) Grade (g/t) Gold (‘000 oz) Classification Dec 2010 June 2010 June 2009 Dec 2010 June 2010 June 2009 Dec 2010 June 2010 June 2009 CM – Proved 14.9 14.1 15.2 6.5 5.9 5.9 3,113 2,700 2,906 CM – Probable 1.8 3.7 3.7 5.5 4.2 4.2 308 505 505 NOW - Probable 56.2 42.5 42.6 6.6 6.6 6.6 11,968 8,991 9,014 SOW – Probable 83.3 17.5 17.5 5.0 6.6 6.6 13,378 3,703 3,703 OM – Probable 3.8 3.8 8.7 8.7 1,044 1,044 Total AI 156.1 81.6 82.8 5.7 6.5 6.5 28,766 16,943 17,171 Probable (BI) – Phase 2 36.5 66.6 66.6 4.9 5.8 5.8 5,767 12,315 12,315 Total 192.6 148.2 149.4 5.6 6.1 6.1 34,533 29,258 29,486 27
Mineral Reserves at a gold price of R265,000/kg
40 80 120 160
Reserves
Approximately one third of those of Gold Fields, AngloGold Ashanti Reserves (Moz)
______________________ Source: Goldval.com as at September 2010
Existing Mine Infrastructure
29
Station Station
33 Lvl 48 Lvl 49 Lvl 50 Lvl 53 Lvl 56 Lvl 58 Lvl 60 Lvl 63 Lvl 65 Lvl 68 Lvl 70 Lvl 70a Lvl 71 Lvl 72 Lvl 75 Lvl 78 Lvl 80 Lvl 83 Lvl 85 Lvl 87 Lvl 90 Lvl 90 Lvl 93 Lvl 93 Lvl 94 Lvl 95 Lvl 95 Lvl 100 Lvl 100 Lvl 105 Lvl 105 Lvl 110 Lvl 110 Lvl 110a Lvl
Colour Coding: Red Up Cast. Green Down Cast Gold Rock Handling Capacity Rock Capacity 120ktpm Rock Capacity 175ktpm Rock Capacity 195ktpm 94 Level Refrigeration SV 1 50 Level Plugs Shaft damaged South Shaft SV 3 80 Level Pumps & Refrigeration Plants 83 Level Backfill Plant 95a Level Pump Station Intermediate Pump Stations Twins Ventilation Shaft Twins Main Shaft 51 Level Pump Station 84 Level Pump Station Metallurgical Plant SV 2 Deepened Section 110a Pump Challenge is the limited Storage from 95 Level to 95a Level
1.4km
30 Headgear A-Frame early lift strategy Completed in May 2011 Rock winder installation progressing to plan – all major components manufactured and delivered to the mine
Planned Mine Infrastructure – Vent Shaft Deepening
105 level 100 level 110 level 95 level
Main Shaft Ventilation Shaft
Reef silo’s 105 to 110 level 110A level 100A level Reef silo’s 110 to 110A level Settlers & dams 105 to 110 level
31
Reef silo’s 100 to 105 level
Main Shaft Ventilation Shaft
Planned Mine Infrastructure – Mine Development
32 Full Plant Tailings – Backfill plant under construction at South Shaft
Planned Mine Infrastructure – Backfill Infrastructure
33 Completed Silt Trap and Neutralisation Plant TSF – tailings deposition to cover the toe drains is in progress Penstock - returning water to fill the return water dam No.1 No.2
Planned Mine Infrastructure – Tailings Storage Facility
Return Water Dam – lining complete and both return dams being filled
330ktpm milling capacity 450ktpm downstream processing capacity
34 Leach extension earthworks
Planned Mine Infrastructure – Plant Expansion
Leach extension earthworks Thickener earthworks Leach Extension Civils Thickener Civils and Earthworks Ball Mill 2 Civils and Earthworks Thickener Civils and Earthworks
35 Eskom new 132KV overhead supply line 40MVA transformer No.5 Substation extension