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News:
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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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14 May 2008
Appointment of Chief Financial Officer
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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
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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
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27 June 2007
Forthcoming Release of Voluntary Escrowed Securities, lodged with
ASX
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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
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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
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26 April 2007
Appendix 4E preliminary final report lodged with ASX
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15 March 2007
Market update: Nifty Sulphide Project
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16 January 2007
Third Quarter Report December 2006 lodged with ASX
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16 January 2007
December 2006 Quarterly Report Presentation (teleconference)
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Birla Mt Gordon Operation
Overview
The Mt Gordon operation is located in northwest Queensland, approximately 120 km north of Mt Isa.
Figure: Surface layout of Mt Gordon operations
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Background
Copper oxide mineralisation was first discovered in the district at Mt Oxide in 1882, followed by the discovery of the Mammoth deposit in 1927. This was intermittently worked on a small scale until 1969, with copper in concentrate and copper cathode produced from the Mammoth deposit between 1969 and 1995.
Aberfoyle purchased the operation in 1995 and delineated the Esperanza deposit before being acquired by Western Metals Limited in 1998. Aditya Birla Minerals acquired the operation in November 2003.
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Geology
The Mt Gordon project area lies on the Mt Gordon fault zone, a major fault separating the metasedimentary rocks of the Mt Isa sequence from the younger metasediments to the west.
Figure: Mt Gordon local geology and ore deposit location
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Reserves and Resources
Mt Gordon ore reserves and mineral resources as at 31 December 2005 are shown below.
Category |
Tonnes |
Copper (%) |
Metal (tonnes) |
Ore reserves |
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|
Proved |
600,000 |
2.4 |
14,000 |
Probable |
2,060,000 |
3.0 |
61,000 |
Total |
2,660,000 |
2.8 |
75,000 |
Mineral resources |
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|
|
Measured |
1,700,000 |
2.8 |
50,000 |
Indicated |
8,800,000 |
3.1 |
275,000 |
Inferred |
7,100,000 |
2.6 |
180,000 |
Total |
17,600,000 |
2.9 |
505,000 |
Notes
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Ore reserves and mineral resources have been estimated as at 31 December 2005 by Aditya Birla Minerals and classified according to the JORC Code (2004). Ore reserves and resources have been reviewed by Snowden.
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Totals may not add due to rounding.
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Ore reserves are generally based on a copper cut-off grade of 2.0%; however minor individual lower grade stopes are included in the overall reserve.
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Mineral resources are inclusive of ore reserves.
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Mt Gordon Operation
Mining operations are focused on the Mammoth underground mine, following the exhaustion of the Esperanza open pit in November 2005.
The operation has the ability to produce both copper in concentrate through a standard flotation plant and copper cathode through a ferric leach plant utilising low pressure and temperature autoclave technology followed by SX–EW treatment. Due to currently available ore sources which are more amenable to concentrate production, copper cathode operations were suspended in January 2006.
Copper in concentrate is trucked to Cloncurry, railed to Townsville and then shipped to Hindalco Copper’s Dahej copper 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.
Mining of the currently known reserves at Mammoth is scheduled to be completed in December 2007. Mt Gordon has an estimated mineral resource of approximately 500 kt of copper. The majority of this mineral resource occurs at Mammoth, within the Esperanza system below the present open pit or within the standalone Esperanza South resource. Conceptual studies are in progress that demonstrate an immediate potential mine life extension without further ore discoveries.
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