ERMO have properties in the ERB of the Witwatersrand basin located in East Rand Area of the Gauteng
Province, South Africa. The operations are located approximately 40km east of Johannesburg, and can
be easily accessed via numerous roads that branch off the national N12 and N17 highways (Figure
34).There is no process water source on the properties other than that which can be acquired from
underground sources. Power, potable water and other related infrastructure are easily obtained given the
proximity to Johannesburg and other established communities in the area.
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The climate in the area is much the same as that at WRMO, with mild to cold winters and warm summers
and typical of the Highveld in South Africa. The climate does not pose any restrictions to working
conditions, and work can take place all year round.
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The East Rand was historically one of the major gold producers of the Witwatersrand Basin. Gold
production commenced in 1888, when the Nigel gold mine came into operation, followed by the Van Ryn
Estates in 1892. As the three ERMO have not always belonged to the same owners, and have undergone
many boundary changes since mining began in the area, it is not possible to give a detailed and accurate
account of the history and production of each of the properties. However, some information regarding
the history of the area and the operations (as much as is known) is summarised below:
Table 29: History of the East Rand Mining Operations
| 1888 |
Gold production commenced in the East Rand. |
| 1922 |
Miners Strike. |
| 1934 |
First shaft sunk at Grootvlei. |
| |
Started mining the Main Reef initially – by 1970 most of Main Reef had been mined out at Grootvlei. |
| 1940s – 1950s |
Main period of production and development in East Rand. |
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Uranium boom impacted positively on the East Rand as the Kimberley reef is a significant uranium host. Uranium was extracted from the Vogelstuisbult and Daggafontien Mines. |
| Late 1950s |
Gold price was fixed and caused closure of many mines. |
| 1978 |
Abolition of fixed gold price. |
| 1981 |
Grootvlei – Mining of the Black Reef began. |
| 1980s – 1990s |
Grootvlei lease area extended to include East Geduld, Daggafontein and Welgedacht. |
| Late 1980s |
Many abandoned claims were restaked and some old workings were reopened. |
| 1990s |
Flooding of the deeper Main Reef formation resulted in the major tonnage contributors shifting to the relatively shallow Kimberley and Black Reefs. |
| 9 June 1997 |
Grootvlei became a wholly-owned subsidiary of Harmony Gold Mining Company Ltd (“Harmony”). |
| 1 July 1997 |
Cons Modder became a wholly-owned subsidiary of Harmony. |
| July 1997 |
Pretklerk Springs Daggafontein Gold Mining company (Pty) Ltd, Pretklerk Gold Mining Company (Pty) Ltd, Pretklerk Marievale (Pty) Ltd and Nigel are merged by Petmin to form the greater Nigel Gold Mining Company. |
| 15 December 1998 |
Petmin acquired Grootvlei and Cons Modder from Harmony. |
| October 2002 |
EAGC acquires 100% of ERMO (a wholly-owned subsidiary of Petmin). |
| 14 February 2003 |
Bema acquires 100% of EAGC. |
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