East Rand Mine

East Rand Proprietary Mine Ltd.

Location
East Rand Gold Mine Location in South Africa
Location	Boksburg
Province	Gauteng
Country	South Africa
Coordinates	26°06′S28°19′E
Production
Production	79,479
Financial year	2007-08
History
Opened	1893
Active	120
Closed	2008
Owner
Company	OroTree Limited
Website	www.orotree.com
Year of acquisition	2019

East Rand Proprietary Mines(ERPM) is a 125-year-old undergroundgold miningoperation on theWitwatersrand BasinatBoksburg,to the east ofJohannesburg.The mine employed 3,850 people. It was the deepest mine in the world until 2008 at 3,585 metres depth, slightly more than theTauTonamine, also in South Africa, which was 3,581 metres at the time (in 2008 the TauTona mine completed a digging project that extended the depth of the mine by several hundred metres.)

The mine closed in 2008. Historical gold production between 1896 and 2008 was 43 Moz at recovered gold grade of 8.1g/t (95% plant recovery).

A world class high grade gold deposit remains with existing in situ resources (SAMREC compliant) of 63 Moz, including; - Measured & Indicated resource of 13.6 Moz at 6.7g/t Au - Inferred resources of 50 Moz at 4.92 g/t Au.

The Cason mine dump was once the world’s highest manmade mountain. This dump is currently being recycled. It is now a shadow of its former self and will probably disappear in the near future.

Production

Recent production figures:

Year	Production	Cost per ounce
2007	80,216 ounces	US $641
2008	79,479 ounces	US $748

History

Share of the East Rand Proprietary Mines Ltd, issued 19 October 1928

The ERPM engineered many mining techniques which are still in place today, including "Long Wall Mining". The mine also built the world's largest ice factory which produced up to 8,000t of ice daily to cool wall rock temperatures (50-60 deg Celsius).

The mine was acquired by private Malaysian mining companyOroTree LimitedArchived30 May 2019 at theWayback Machineon 26 February 2019.

• 
  Mine shaft (1963)
• 
  Daily production (1963)
• 
  Smelting
• 
  Lists of mineworkers

References

• Tucker, Rodney & Viljoen, Richard & J. Viljoen, Morris. (2016). A Review of the Witwatersrand Basin - The World's Greatest Goldfield. Episodes. 39. 105. 10.18814/epiiugs/2016/v39i2/95771.

External links

• Details from NGD IranArchived13 March 2007 at theWayback Machine
• InfoMine listing
• [1]
• [2]
• [3]
• [4]
• OroTree acquires ERPM GOLD MINE[5]
• Malaysian Explorer acquires ERPM Gold Mine[6]