East Rand Mine

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East Rand Proprietary Mines (ERPM) is a 125-year-old underground gold mining operation on the Witwatersrand Basin at Boksburg, to the east of Johannesburg. The mine employed 3,850 people. It was the deepest mine in the world until 2008 at 3,585 metres, slightly more than the TauTona 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.)[1]

The mine closed in 2008. Historical gold production between 1896 and 2008 was Script error: No such module "convert". recovered gold grade of 8.1g/t (95% plant recovery).

High grade gold deposits remain with existing in situ resources (SAMREC compliant) of Script error: No such module "convert"., including; - Measured & Indicated resource of Script error: No such module "convert". at 6.7g/t. - Inferred resources of Script error: No such module "convert". at 4.92 g/t.

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

Production

Recent production figures:[2]

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

History

File:East Rand Proprietary Mines Ltd 1928.jpg
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 8,000 t of ice daily to cool wall rock temperatures of 50-60 degrees Celsius.

The mine was acquired by private Malaysian mining company OroTree [3] on 26 February 2019.

References

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  2. ERPM Script error: No such module "webarchive". DRD Gold website, accessed: 29 September 2009
  3. OroTree Limited Script error: No such module "webarchive".

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  • 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

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