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East Rand Proprietary Mines (ERPM) is a 125-year-old underground gold mining operation on the
ERPM
DRD Gold website, accessed: 29 September 2009
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 compan
OroTree Limited
on 26 February 2019.
1963-1-13 ERPM mijn - liftschacht.jpg, Mine shaft (1963)
1963-1-13 ERPM mijn - 1 dag productie goud Balanced.jpg, Daily production (1963)
1963-1-13 ERPM mijn - goud smelt.jpg, Smelting
1963-1-13 ERPM mijn - Herkomst zwarte arbeiders.jpg, Lists of mineworkers
Details from NGD Iran
* OroTree acquires ERPM GOLD MIN
* Malaysian Explorer acquires ERPM Gold Min
Gold mines in South Africa Buildings and structures in Gauteng Underground mines in South Africa Economy of Ekurhuleni {{Gauteng-geo-stub
Witwatersrand Basin
The Witwatersrand () (locally the Rand or, less commonly, the Reef) is a , north-facing scarp in South Africa. It consists of a hard, erosion-resistant quartzite metamorphic rock, over which several north-flowing rivers form waterfalls, which ...
at Boksburg
Boksburg is a city on the East Rand of Gauteng province of South Africa. Gold was discovered in Boksburg in 1887. Boksburg was named after the State Secretary of the South African Republic, W. Eduard Bok. The Main Reef Road linked Boksburg ...
, to the east of Johannesburg
Johannesburg ( , , ; Zulu language, Zulu and xh, eGoli ), colloquially known as Jozi, Joburg, or "The City of Gold", is the largest city in South Africa, classified as a Megacity#List of megacities, megacity, and is List of urban areas by p ...
. The mine employed 3,850 people. It was the deepest mine in the world until 2008 at 3,585 metres depth, slightly more than the TauTona
The TauTona Mine or Western Deep No.3 Shaft, was a gold mine in South Africa. At approximately deep, it was home to the world's second deepest mining operation, rivalled only by the Mponeng Gold Mine, but was closed in 2018.
The mine was one o ...
mine, 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:DRD Gold website, accessed: 29 September 2009
History
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 companOroTree Limited
on 26 February 2019.
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 Iran
* OroTree acquires ERPM GOLD MIN
* Malaysian Explorer acquires ERPM Gold Min
Gold mines in South Africa Buildings and structures in Gauteng Underground mines in South Africa Economy of Ekurhuleni {{Gauteng-geo-stub