Resources

WESTERN TANAMI RESOURCES
as at September 2011

 

DEPOSIT   Measured     Indicated     Inferred     Total  
   Tonnes  Grade  Ounces  Tonnes  Grade  Ounces  Tonnes  Grade Ounces Tonnes Grade  Ounces
 Coyote*  78,000  25.6  64,000  473,000  11.5  174,000  329,000  7.0 74,000 880,000 11.0  312,000
 Sandpiper  27,000  3.3  3,000  455,000  4.1  59,000  635,000  4.4 90,000 1,117,000 4.2  152,000
 Kookaburra  55,000  2.6  5,000  286,000  2.4  22,000  353,000  2.1 24,000 694,000 2.3  51,000
 Pebbles  -   -   -  -  -  -  76,000  2.5 6,000 76,000 2.5  6,000
                         
 Stockpiles 337,000 1.6  17,000  -  -  -  -  - - 337,000 1.6  17,000
                         
 TOTAL  497,000 5.6 89,000  1,214,000  6.5  255,000  1,393,000  4.3 194,000 3,104,000 5.4  538,000

  Notes to accompany Table -    

  1. The Western Tanami Project Resource estimations were completed using Micromine, Surpac and Datamine software, comprising inverse distance grade interpolation within block models constained by 3D wireframed geological boundaries. the wireframes defining the mineralisation were based on structural, assay and lithological information.
  2. Various top cuts have been applied to the drill hole samples based on lode domain analysis, with the exception of Kookaburra where the effect of top cutting was deemed immaterial. Where top cuts were aplied they ranged from 35g/t for Sandpiper to 120g/t for Coyote.
  3. The search constraints applied to the grade estimation were controlled by the orientation of the lodes and the known dip and plunge of the mineralisation within the lodes based on geological knowledge and mining experience.
  4. The Mineral Resource Estimate is reported at a 1g/t Au lower cut-off.
  5. Tonnes are rounded to the nearest thousand and grade to 0.1g/t.  Rounding may affect tallies.
  6. Deposit ounces rounded to nearest thousand. Stockpile ounces rounded to nearest hundred.
  7. The Resource estimations used bulk density measurements conducted on a deposit scale and broken down by regolith profile.  As such the density measurements applied were based on test work applicable to the deposit of interest. These ranged from 2.00 t/m3 (base of transported) to 2.72t/m3 (fresh rock).
  8. The Measured Resource at Coyote has been based on the high level of confidence of the location and grade of mineralisation between the current underground development drives. The development drives have typically six metres separation. The Sandpiper and Kookaburra Measured Resources have been based on a 10 metre distance below the current pit floor, which is supported by a combination of mining at the base of the pits, and five metre deep grade control drilling below the floor of the pit.
  9. Resource estimation of Coyote and Sandpiper deposits was completed by Mr Steven Nicholls, former Senior Geologist of Tanami Gold NL. 
  10. The Kookaburra Resource estimation was conducted by Mr Peter Ball of DatageoGeological Consultants. 
  11. The Pebbles Resource estimate was completed in 2007 by Mr Malcolm Titleyof CSA Australia Pty Ltd. 
  12. Mr Nicholls (MAIG), Mr Ball (MAusIMM) and Mr Titley (MAusIMM, MAIG) qualify as Competent Persons as defined by the December 2004 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code) and consent to the inclusion in this report of the matters based on their information in the form and context in which it appears. 
  13. *The Western Tanami Resource figure stated has not been depleted for combined Coyote mine production of 41,467 ounces during the period 1 July 2010 to September 2011.