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  St Ives

St Ives

Lake Lefroy – brownfields exploration drilling  
During financial 2010 St Ives produced 421,100 ounces of gold at a cash cost of A$806 per ounce and an NCE of A$1,110 per ounce.
For the year to end-June 2011 the outlook for St Ives is to produce between 440,000 and 460,000 ounces of gold at a cash cost of between A$760 and A$785 per ounce and an NCE of between A$1,030 and A$1,060 per ounce.
Lake Lefroy – brownfields exploration drilling    

The lease area of the St Ives Gold Mine extends from about five kilometers to 25 kilometers southsouth- west of the town of Kambalda in Western Australia, which is located about 630 kilometers east of Perth and 80 kilometers south of Kalgoorlie, the nearest major town.

The mine exploits structurally controlled hydrothermal gold deposits situated in the Norseman-Wiluna Greenstone Belt, which is part of the Yilgarn Craton, a 2.6 Ga granite-greenstone terrain in Western Australia. Ore is currently mined from three underground mines, three open pits and ten surface stockpile sources, and processed through a carbon in process plant and a heap leach plant. The mine has a Mineral Resource of 6.9 million ounces of gold and a Mineral Reserve of 2.3 million ounces.

Gold produced
(’000oz)
 
Development jumbo – Athena
Development jumbo – Athena
 
Lefroy ROM – high grade ore from the Agamemnon pit
Lefroy ROM – high grade ore from the Agamemnon pit
Gold produced (’000oz)    

      F2010 F2009 F2008 F2007 F2006

Open-pit mining

           

Waste mined

’000t 34,145 24,801 29,778 26,828 19,743

Ore mined

’000t 6,643 5,799 5,143 3,928 4,487

Head grade

g/t 1.35 1.52 1.71 2.23 1.89

Strip ratio

W:O 3.92 4.31 5.79 6.83 4.40

Underground mining

           

Ore mined

’000t 1,443 1,222 901 1,336 1,771

Head grade

g/t 4.67 5.06 5.15 5.28 4.59

Processing

           

Tonnes processed

Milled

’000t 4,767 4,821 4,647 4,669 4,567

Heap leach

’000t 2,052 2,441 2,586 2,090 2,123

Total

’000t 6,819 7,262 7,233 6,759 6,690

Yield

Milled

g/t 2.5 2.5 2.5 3.0 3.3

Heap leach

g/t 0.5 0.5 0.6 0.5 0.9

Total

g/t 1.9 1.8 1.8 2.2 2.3

Gold produced

kg 13,094 13,222 12,992 15,146 15,440
    ’000oz 421 428 418 487 496

Total cash cost

A$/oz 806 805 649 540 453

US$/oz 710 596 582 424 339

Notional cash expenditure

A$/oz 1,110 1,023 932 738 614

US$/oz 978 757 836 579 459

Capital expenditure

A$m 116.8 92.9 120.3 96.6 70.3

Australia consolidated earnings

 

A$m

89.9 94.3 41.2 52.8 52.6