Lawlers gold mine
| Lawlers gold mine | |||
|---|---|---|---|
| General information about the mine | |||
| Mining technology | Open pit | ||
| Information about the mining company | |||
| Operating company | Barrick Gold | ||
| Start of operation | 1980s | ||
| Funded raw materials | |||
| Degradation of | gold | ||
| Geographical location | |||
| Coordinates | 28 ° 8 ′ 0 ″ S , 120 ° 54 ′ 0 ″ E | ||
|
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| Location | Leinster | ||
| State | Western Australia | ||
| Country | Australia | ||
The Lawlers gold mine is located 14 miles southwest of Leinster in Western Australia , Australia .
Operated, the mining since 2008 by Barrick Gold as part of its Yilgarn South operations there, the other two mining sites, the Darlot-Centenary Gold Mine and Granny Smith Gold Mine .
history
Gold was discovered in this region in 1894 by Patrick Lawler and the town of Lawlers named after him, which was founded near the mining industry when gold was found in the nearby creek. Lawlers is now a ghost town and only the structure of the police station remains.
Opencast mining began in 1986 . The mining area was initially owned by Plutonic Resources , an early and significant Australian mineral exploration company. Homestake Mining Company acquired Plutonic in April 1998 and Homestake was acquired by Barrick Gold in 2001.
Gold warehouse
The mine is located in the Norseman - Wiluna - greenstone belt .
Gold is found in sediments and ultra mafic rocks , as well as in quartz veins connected to sandstone . The veins are 2 to 15 meters thick .
Mining operations and the environment
A crushing plant prepares the ore rock , which is transported over a distance of 4 kilometers from the underground. After crushing, parts of the gold are extracted according to its weight and subjected to a carbon-in-leach process to extract more gold, a cyanide liquor process. Barrick Gold emphasizes that she has mastered a safe process in handling cyanide and refers to certification.
In the process of cyanide leaching, gold is chemically bound in highly toxic seepage water. After filtration and precipitation, brown sludge is produced which, after washing and drying, turns into raw gold through reduction . In this process, hydrogen cyanide and cyanides are produced , which can escape into the environment despite reuse of the lye. This can u. a. happen through accidents, leaks and disasters. All substances produced in this process are poisonous. Although these are easily decomposed and broken down in nature, the resulting large spoil heaps and cyanide dusts can be distributed in an uncontrolled manner by wind and water, toxins can enter the environment in an uncontrolled manner and cause serious ecological damage.
Gold production
| year |
Gold production |
salary |
Cost per ounce ( US $ / oz ) |
| 2000 | 101,200 ounces | 4.94 g / t | 215 |
| 2001 | 104,000 ounces | 4.45 g / t | 407 |
| 2002 | 113,291 ounces | 179 | |
| 2003 | 99,223 ounces | 249 | |
| 2004 | 110,374 ounces | 246 | |
| 2005 | 131,000 ounces | 0.154 oz / t | 324 |
| 2006 | 110,000 ounces | 0.129 oz / t | 494 |
| 2007 | 115,000 ounces | 0.138 oz / t | 515 |
Individual evidence
- ↑ a b c d e barrick.com ( Memento of the original from July 20, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Lawlers Gold Mine: Historical Notes , accessed April 28, 2012
- ↑ gold-net.com.au : Jim Foster: Ghost Towns of Western Australia , in English, accessed April 28, 2012
- ↑ delisted.com.au : Limited Plutonic Resources , accessed April 28, 2012
- ↑ fundinguniverse.com : Homestake Mining Company - History , in English, accessed April 28, 2012
- ↑ barrick.com ( Memento of the original from January 4, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Australia Pacific , accessed April 28, 2012
- ↑ barrick.com ( Memento of the original from May 13, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Cyanide Management at Barrick Lawlers , accessed April 26, 2012
- ↑ regenwald.org : 12 questions and answers on the topic of gold , accessed on April 26, 2012
- ↑ The Australian Mines Handbook: 2003-2004 Edition , p. 10
- ↑ The Australian Mines Handbook: 2003-2004 Edition , p. 105
- ↑ 2003 barrick.com ( Memento of the original from November 20, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Fourth Quarter Report 2003 , accessed April 28, 2012
- ↑ a b 2004 barroick.ocm ( Memento of the original from October 28, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Fourth Quarter Report 2004 , accessed April 28, 2012
- ↑ barrick.com ( Memento of the original from September 22, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Fourth Quarter & Year-End Mine Statistics 2006 , in English, accessed April 28, 2012
- ↑ a b brraick.ocm ( Memento of the original from September 22, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. : Fourth Quarter & Year-End Mine Statistics 2007 , in English, accessed April 28, 2012
