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News:
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15 February 2010
Finance Facility
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18 Janaury 2010
ABY Quartetly Report
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29 December 2009
EEO Public Report for 2008-09
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11 December 2009
Maroochydore Copper project
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29 October 2009
Half Yearly Financial Results
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29 October 2009
Quartetly report for the second quarter ended 30 September 2009
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14 October 2009
Preliminary Result for Half Year Ended 30 September 2009
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16 September 2009
Tenement Expiration
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26 August 2009
Results of Meeting
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26 August 2009
AGM Presentation to Shareholders
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24 July 2009
Annual Report to shareholders
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24 July 2009
Notice of Annual General Meeting
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17 July 2009
ABY Q1 Announcement
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4 May 2009
Full Year Statutory Accounts
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30 April 2009
Q4 Quarterly Release
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17 February 2009
Market update
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2 February 2009
Quarterly Activities Report
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2 February 2009
Teleconference Details
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2 February 2009
Presentation to Analysts and Institutional Shareholders
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7 January 2009
Market update on ABML operations
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19 November 2008
Market Update - Suspension of Operations at Esperanza Sth
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17 November 2008
Amended Competent Persons Statement - Annual Report
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31 October 2008
Mining 2008 Resources Conference - Brisbane
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30 October 2008
Appendix 4D Half Yearly Report
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30 October 2008
Quarterly Activities Report
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30 October 2008
Teleconference Details
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30 October 2008
Half Yearly Results Presentation to Investors
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30 October 2008
Half Year Accounts
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19 September 2008
Investor Visit
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4 September 2008
Form 604 - Change in substantial holding
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29 August 2008
CEO presentation at AGM
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29 August 2008
Result of meeting
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27 August 2008
Gas Supply Interruption at Nifty Operations
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13 August 2008
Maroochydore Scoping Study and Updated Resources Estimate
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30 July 2008
Annual report 2007-08
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30 July 2008
Notice of Annual General Meeting and Explanoatory Statement
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22 July 2008
ASX release
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30 June 2008
Gas Supply Disruption at Nifty Operations
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25 June 2008
Gas Supply Disruption at Nifty Operations
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10 June 2008
Gas Supply Interruption at Nifty Operations
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6 June 2008
Notice of initial substantial holder
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14 May 2008
Appointment of Chief Financial Officer
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6 May 2008
Details of Dividends
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30 April 2008
Final Director's Interest Notice
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29 April 2008
Annual results FY 2007-08
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29 April 2008
Quarterly activities report
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29 April 2008
Preliminary Final Report and full year statutory accounts
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28 April 2008
Initial Director’s Interest Notice
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28 April 2008
Appointment of Non-Executive Director — CEO elect
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3 April 2008
Aditya Birla Minerals Limited – CEO resignation
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26 March 2008
ASX - MTG - Investors site visit Presentation 2008
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14 March 2008
ASX announcement - Extended shut down
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10 March 2008
Investors Presentation March 2008, lodged with ASX
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31 January 2008
Development of Esperanza South Mine at Mount Gordon, lodged with ASX
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14 January 2008
December 2007 Quarterly Report (teleconference)
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14 January 2008
Third Quarter Report December 2007, lodged with ASX
more>>
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15 November 2007
Investor Presentation, lodged with ASX
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30 October 2007
Director Resignation, lodged with ASX
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29 October 2007
Half Yearly Results Presentation to Investors, lodged with ASX
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29 October 2007
Second Quarter Report September 2007, lodged with ASX
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29 October 2007
Half Yearly Report and Accounts, lodged with ASX
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24 October 2007
September 2007 Half Year Report Presentation (teleconference)
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24 August 2007
Initial Director’s Interest Notice, lodged with ASX
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21 August 2007
Director Appointment, lodged with ASX
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20 August 2007
AGM results, lodged with ASX
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20 August 2007
AGM Presentation, lodged with ASX
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23 July 2007
Notice of AGM, lodged with ASX
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17 July 2007
June 2007 Quarterly Report (teleconference)
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16 July 2007
First Quarter Report June 2007, lodged with ASX
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6 July 2007
Annual Report 2006/07, lodged with ASX
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2 July 2007
Final Director’s Interest Notice, lodged with ASX
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29 June 2007
Final Annual Financial Report, lodged with ASX
more>>
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27 June 2007
Forthcoming Release of Voluntary Escrowed Securities, lodged with
ASX
more>>
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26 June 2007
Director Resignation, lodged with ASX
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18 June 2007
Resources Conference Presentation, lodged with ASX
more>>
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26 April 2007
Fourth quarter report March 2007 lodged with ASX
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26 April 2007
Presentation to analysts lodged with ASX
more>>
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26 April 2007
Appendix 4E preliminary final report lodged with ASX
more>>
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15 March 2007
Market update: Nifty Sulphide Project
more>>
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16 January 2007
Third Quarter Report December 2006 lodged with ASX
more>>
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16 January 2007
December 2006 Quarterly Report Presentation (teleconference)
more>>
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Birla Nifty Copper Operation
Overview
Aditya Birla Minerals’ principal asset is the Birla Nifty Copper
Operation (BNCO), located in the Great Sandy Desert Region of the East
Pilbara in Western Australia, approximately 1,250 km north of Perth and
350 km east of Port Hedland.
BNCO comprises an historical open pit oxide mine with associated SX–EW
processing operations, and an underground sulphide mine with an associated
concentrator. Site infrastructure (powerhouse, camp, airfield, tailings
storage facility) supports both the oxide and sulphide operations. A concentrate
storage facility is located at Port Hedland where the concentrate is shipped
to overseas customers.
Figure: Surface layout of the Nifty operation
 Top
Background
Oxide copper was first discovered at Nifty in 1981 by WMC Limited. Drilling
of the oxide resource ultimately lead to the discovery of the deep sulphide
resource in 1983. WMC commenced an open pit, heap leach, SX–EW operation
on the relatively high grade part of the oxide mineralisation in 1993.
The Nifty operation was purchased by Straits Resources Limited in 1998,
and then acquired by Aditya Birla Minerals Limited in March 2003. Following
the completion of a positive feasibility study, underground development
was commenced in January 2004 to exploit the sulphide resource.
Top
Geology
The Nifty copper deposit is located in the richly mineralised Paterson
province, which also hosts the Telfer gold–copper mine, located some
70 km east of Nifty, and lies within a southeast trending synclinal structure
plunging gently to the east.
Figure: Geological cross section of the Nifty operations
Top
Reserves and Resources
Nifty ore reserves and mineral resources as on 31 March 2009 are shown
below.
Category |
Tonnes |
Copper (%) |
Metal (tonnes) |
Ore reserves |
|
|
|
Proved |
22,040,600
|
2.3
|
509,218
|
Probable |
5,100,000
|
1.1
|
58,300
|
Total |
27,140,600
|
2.1
|
567,518
|
Recoverable in inventory under leach |
15,670,000
|
0.4
|
62,850
|
Mineral resources |
|
|
|
Measured |
31,654,600
|
2.6
|
830,797
|
Indicated |
8,698,000
|
1.5
|
133,521
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Inferred |
4,937,600
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1.2
|
61,464
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Total |
45,290,200
|
2.3
|
1,025,782
|
Notes
- Ore reserves and mineral resources have been estimated as at 31
March 2009 by Aditya Birla Minerals and classified according to the
JORC Code (2004). Ore reserves and resources have been reviewed by
PAH.
- Totals may not add due to rounding.
- Recoverable copper in inventory under leach is additional to proved
and probable reserves.
- Mineral resources are inclusive of ore reserves, but exclude recoverable
inventory under leach.
The Nifty Sulphide Operation contains estimated underground sulphide
ore reserves of approximately 491 kt of copper, with estimated ore reserves
of approximately 77 kt defined within the Nifty open pit.
Top
Nifty Oxide Operation
The open pit operation exploited oxide, transitional and chalcocite mineral
resources from which copper cathode was recovered via a heap leach and
SX–EW method. The oxide circuit is capable of producing approximately
25 ktpa of copper cathode.
Open pit mining operations have ceased. The SX/EW operations were placed
on care and maintenance in early 2009 in response to the declining copper
price at the time.
Top
Nifty Sulphide Operation
Based on its current reserve, the Nifty Sulphide Operation has an expected
mine life of 8 years at an average LOM production rate of approximately
60 ktpa using conventional mining and processing methods.
The Nifty Sulphide Operation, which accesses the Nifty sulphide deposit via
a decline located immediately north of the open pit, mines chalcopyrite
ore treated by standard flotation to produce copper in concentrate. Metallurgical
recovery of 93% copper to copper in concentrate with a grade of 25% copper
is being achieved.
Ore production from stoping and concentrate production commenced in December
2005 and March 2006 respectively. The underground mine has a capacity
of 2.0-2.2 mtpa and the concentrator plant has a capacity of 2.0-2.3 mtpa.
Concentrate produced is trucked to Port Hedland for shipping to Hindalco
Copper’s Dahej smelting and refining facility in India. Copper in
concentrate produced is sold to Hindalco under a LOM off–take agreement
based on arm’s length terms.
At a LOM production capacity of approximately 60 ktpa, the Nifty Sulphide
Operation is one of the largest underground copper mines to be commissioned
worldwide this decade.
Figure: Nifty Sulphide Operation concentrator
Top
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