20#Project Analysts Oct05 reworked26Oct2005 2 - Implats · 2017-08-18 · • Ventilation shaft...

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Transcript of 20#Project Analysts Oct05 reworked26Oct2005 2 - Implats · 2017-08-18 · • Ventilation shaft...

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20 Shaft Project

Investor VisitOctober 2005

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1#9#

10#

2/2A# 5#

4#

11#

14#

12#8#6#

7A#

7#

14A# Dec..

14B# 11C#

12N

12S

20#Blocks

‘A’ ‘B’ ‘C’

19#

19# Dec.

18#17#

17# Dec.

17A#

21#

16# Dec.

Reinkoyalskraal 278 J.Q.Portion 3

Reinkoyalskraal 278 J.Q.Remaining Extent

(Prospecting Permit)

Welbekend 117 J.Q.(Prospecting Permit)

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Kilometers

0 15

Paar

dekr

aal 2

79 J

.Q.

16#Project

Impala Lease Area: Location of 20 shaft

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20 Shaft Resource/Reserve

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Block A,B = 38 m tonnesBlock C = 20 m tonnesWedge, Block D = 15 m tonnesTotal = 73 m tonnes

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Scissor Faults

Undulating Reef Plane

20 Shaft Geology - 3D Seismic model

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20 Shaft Resource/Reserve – Block A and B

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139.83.6738.130.3Total

53.03.5115.19.5UG2

86.73.7723.020.1Merensky

Metalcontent(000 kg)

Reservegrade(g/t)

Reservetonnes

(t)

Resource(million t)

Economichorizon

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20 shaft – Mining parameters

• Mining of Merensky reef first followed by UG2

• 185 ktpm reef production at steady state

• Conventional breast stoping handheld pneumatic rockdrills

• Scraper winch cleaning

• Conventional footwall tracked 10-tonne locomotives and 6-tonne hoppers

• Monorail for material transport

• Chairlifts for men transport

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20 shaft – Underground layout

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20 shaft - Underground cross-section

Ventilation shaft Main shaft

1 x Merensky decline

Conveyor Decline

Shaft bottom106 Lvl

Main90 Lvl

97 Lvl

100 Lvl

Shaft pillar extraction87 Lvl

2 x Material decline

94 Lvl UG2 shaft pillar extraction UG2 reef horizon

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20 shaft - Production profile

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20

40

60

80

100

120

140

160

180

200

F2006 F2008 F2010 F2012 F2014 F2016 F2018 F2020 F2022 F2024 F2026 F2028 F2030 F2032 F2034

Thousands

Mon

thly

Ton

nage

MERENSKYMERENSKY UG2UG2

Financial year

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Key dates

7915/05/11Full production

5115/01/09Start tonnage build up

3724/10/07Complete ventilation shaft

5114/01/09Complete main shaft

1401/12/05Shaft sinking commences

01/10/04Mobilisation

MonthsDateKey dates

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20 Shaft – site layout

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Financials (Base date – April 2004)

Capital cost• Base date budget − R 2.1bn

• Escalated budget − R 3.0bn

Working costs• Mining (Base date) − R178 per tonne

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Time saving initiatives

• Fast track main shaft civils

• Concurrent construction work in the winder house

• Use of second hand rock winder

• Sink main shaft with permanent winder and headgear

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Current project status

• Phase I infrastructure – complete (power, water and sewerage)

• Phase I civils – 95% complete

• Both shafts in full sink

• Main shaft sinking – 222m BC

• Ventilation shaft sinking – 373m BC

• Second outlet – 236m total advance

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1520 Shaft – Month 1

1620 Shaft – Month 3

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1720 Shaft – Month 6

1820 Shaft – Month 9

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Overview of terrace and contractor laydown areaNo 20 Shaft : In full sink Date : September 2005

20 Shaft – Month 13

20 Shaft Project

Investor VisitOctober 2005