Carosue Dam Gold Mine

Last updated

Carosue Dam
Location
Australia Western Australia location map.svg
Schlaegel und Eisen nach DIN 21800.svg
Carosue Dam Gold Mine
Location in Western Australia
Location Laverton
State Western Australia
Country Australia
Coordinates 30°09′11″S122°21′08″E / 30.1531°S 122.3521°E / -30.1531; 122.3521
Production
Products Gold
Production237,625 ounces [1]
Financial year2021–22
History
Opened2000
Active2000–2005
2010–present
Owner
Company Northern Star Resources
Website www.nsrltd.com
Year of acquisitionFebruary 2006
Carosue Dam Gold Mine

The Carosue Dam Gold Mine is a gold mine located south of Laverton, Western Australia.

Contents

Carosue Dam was previously owned by the now defunct mining company Sons of Gwalia Limited. [2] Purchased in 2005, the mine was placed into care and maintenance by new owners St Barbara in June 2005 and sold to Saracen Mineral Holdings in February 2006. Saracen reopened the mine in early 2010. It is now owned and operated by Northern Star Resources after a merger with Saracen in 2021.

History

Gold mines in the Kalgoorlie - Leonora region Gold mines Kalgoorlie Leonora (2).svg
Gold mines in the Kalgoorlie - Leonora region

Located within the South Laverton gold field, situated 120 km north east of Kalgoorlie, the processing plant at Carosue Dam was constructed and commissioned in 2000, then owned by Pacmin Mining. In October 2001, it was acquired by Sons of Gwalia. [3] During its five-year operation until June 2005, the mine produced over 700,000 ounces of gold. [4]

Sons of Gwalia went into administration on 30 August 2004 and the company's gold mining operations were sold to St Barbara Limited in March 2005 for A$38 million, having been valued by the Sons of Gwalia directors at A$120 million. It was one of four gold mines sold to St Barbara in this deal, the other three being the Marvel Loch Gold Mine, the Tarmoola Gold Mine and the Gwalia Gold Mine. [5] [6] [7]

After the collapse of Sons of Gwalia in 2004, the mine continued producing but was placed in care and maintenance by St Barbara three months after its purchase. [8]

In October 2005, St Barbara announced the sale of Carosue Dam to Saracens for A$19.4 million in cash and shares. St Barbara acquired a 20% interest in Saracens through this transaction. [9]

With the purchase of the mine by Saracen, the new owners developed a two-staged plan to reopen the mine in 2010. After a period of open pit mining, lasting for three to five years, the second stage will also include an underground operation. [10]

On 15 June 2009 Saracen announced that the mine would be connected to the Western Power grid through a 90 km power line rather than being supplied by diesel generators on site. This line, scheduled to be completed in late 2010, is estimated to cost between $10 and 15 million but should provide the company with savings in the range of $50 to 100 per ounce of gold produced. [11]

In November 2009, Saracen announced that the $7 million construction project at the mine had been finished and plant commissioning had started. Gold production was scheduled to begin in February 2010, [12] with the first gold pour announced on 29 January 2010. [13]

In October 2020, a merger between Northern Star Resources and Saracen Metal Holdings was proposed and completed in February 2021 when Saracen was de-listed from the Australian Securities Exchange. [14] [15]

As of 2022, the mine operated by Northern Star Resources as an underground and surface operation. [16]

A 5MW solar power station was commissioned in June 2022 to reduce the mine's emissions by over 5600 tonnes per year. [17]

Production

Production of the mine: [18] [19] [20] [8] [21] [22] [23] [16] [1]

YearProductionGradeCost per ounce
2001121, 161 ounces1.76 g/tA$345
200295,144 ounces [1] 1.8 g/tA$388
2002–03139,894 ouncesA$426
2003–04172,388 ouncesA$387
200529,528 ounces [2] 3.28 g/tA$349
2005–09inactive
2009–1025,036 ouncesA$654
2010–11111,163 ouncesA$738
2011–12
2012–13
2013–14
2014–15
2015–16157,191 ounces2.3 g/tA$1,067
2016–17155,970 ounces2.14 g/tA$1,413
2017–18171,301 ounces2.3 g/tA$1,199
2018–19
2019–20203,280 ounces3.2 g/tA$1,263
2020–21232,276 ounces3.1 g/tA$1,311
2021–22237,625 ounces2.1 g/tA$1,785

Notes

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References

  1. 1 2 "2022 Annual Report". www.nsrltd.com. Northern Star Resources. Retrieved 1 March 2023.
  2. ↑ The Australian Mines Handbook: 2003-2004 Edition, page 520
  3. ↑ MINEDEX on the Web Archived September 11, 2008, at the Wayback Machine accessed: 4 September 2009
  4. ↑ Saracen website - Plant and Infrastructure Archived September 11, 2009, at the Wayback Machine accessed: 4 September 2009
  5. ↑ Sons of Gwalia Limited at delisted.com.au accessed: 3 September 2009
  6. ↑ St Barbara Mines Limited - Lodgment of Open Briefing Archived 15 September 2009 at the Wayback Machine published: 28 June 2005, accessed: 3 September 2009
  7. ↑ The West Australian, published 16 March 2005, accessed: 3 September 2009
  8. 1 2 "St Barbara annual report 2005" (PDF). Archived from the original (PDF) on 13 October 2009. Retrieved 3 September 2009.
  9. ↑ St Barbara annual report 2006 Archived 13 October 2009 at the Wayback Machine accessed: 4 September 2009
  10. ↑ Saracens website - Operations - Stage 2 Archived September 11, 2009, at the Wayback Machine accessed: 4 September 2009
  11. ↑ Carosue Dam Operations - Mains power supply Saracens website, published: 15 June 2009, accessed: 5 September 2009
  12. ↑ Carosue Dam plant commissioning commenced Gold production expected in February 2010 Archived July 6, 2011, at the Wayback Machine ASX announcement, published: 30 November 2009, accessed: 27 December 2009
  13. ↑ First Gold Pour at the Carosue Dam Operations Saracens ASX announcement, published: 29 January 2010, accessed: 30 January 2010
  14. ↑ Haselgrove, Salomae (6 October 2020). "Super merger: Northern Star and Saracen to join forces". Australian Mining. Retrieved 5 April 2022.
  15. ↑ Kelly, Elise (12 February 2021). "Northern Star (ASX:NST) completes merger with Saracen (ASX:SAR)". The Market Herald. Retrieved 5 April 2022.
  16. 1 2 "2021 Annual Report". www.nsrltd.com. Northern Star Resources. Retrieved 4 April 2022.
  17. ↑ Mazengarb, Michael (27 June 2022). "WA gold mine now renewably powered after rapid solar deployment". Renew Economy . Retrieved 4 July 2022.
  18. ↑ The Australian Mines Handbook: 2003-2004 Edition, page 77
  19. ↑ Sons of Gwalia annual report 2003 accessed: 12 January 2010
  20. ↑ Sons of Gwalia fourth quarter report 2004 accessed: 12 January 2010
  21. ↑ Quarterly Activities Report June 2010 Saracen ASX announcement, published: 29 July 2010, accessed: 5 August 2011
  22. ↑ Quarterly Activities Report June 2011 Saracen ASX announcement, published: 28 July 2011, accessed: 5 August 2011
  23. ↑ "Carosue Dam Operation". Mining Data Solutions. Retrieved 5 April 2022.

Bibliography

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