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The largest deposit of gold can be found in South Africa in the Precambrian Witwatersrand Conglomerate. This deposit of gold ore is hundreds of miles across and more than two miles deep. It is estimated that two-thirds of the gold mined comes from South Africa.

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South Africa is host to some of the deepest mines in the world. This is particularly relevant in the Witwatersrand gold mining areas where mining levels are expected to approach 5000 m.

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Gold, recognizable by its yellowish cast, is one of the oldest metals used by humans. As far back as the Neolithic period, humans have collected gold from stream beds, and the actual mining of gold can be traced as far back as 3500 B.C., when early Egyptians (the Sumerian culture of Mesopotamia) used mined gold …

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South Africa is host to some of the deepest mines in the world. This is particularly relevant in the Witwatersrand gold mining areas where mining levels are expected to approach 5000 m ...

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2009-8-27 · tion ofscrap), and South Africa (goldreef). It isthis latter application that isdiscussed inthispaper, specific-allythesorting operation attheWest Driefontein Gold Mining Company Limited. Although the Model 16has been described fully2,3, perhaps it isofvalue to discuss the main differences between theprototype Model13atDoornfontein (Fig.l)

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Mining methods in South African deep level gold and platinum mines have remained relatively unchanged for the past hundred years. A Robot Miner has the potential to mine in a different way.

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2009-8-27 · tGold FieldsofSouth Africa, Johannesburg. up ofalloperations, vizbelt speed, number ofmirror facets, and number ofvalves in operation. This has culminated inamachine capable ofsorting upto200 tons ofmaterial per hour inthe 160to 180mm size range, and25tonsperhourintherange 10to20mm. Before Photometric Sorting Two reefs are mined at West Driefontein-the

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South African Gold Mining - CiteSeerX THE CYANIDE METHOD OF GOLD EXTRACTION: 1892-1902 Africa.2 It has also been a major force in shaping the political economic environment. As such it materials machines labor inputs and transaction linkages involved in the profit and loss for many of the Witwatersrand mines Gray and McLachlan 1933 p.

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