Blyvoor Gold Mine, South Africa

Blyvoor gold-bearing mine 70km south-west Johannesburg north-western extreme Witwatersrand Basin Africa. Established 1937 Blyvoor mine Wits line. operating 1942. 1997 mine owned operated DRDGOLD.

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The mine expected 2030 although due its widespread reserve base Blyvoor continue production beyond that. average rand prices higher tariffs have however mine verge liquidation. Monthly losses Blyvoor amounted almost $3.62m October 2009.

To save mine liquidation DRDGOLD plans obtain judicial management court. judicial manager appointed various measures including negotiating creditors defer payments.

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Geology

Blyvoor contains major gold-bearing horizons: Carbon Leader Reef (CLR) orebodies hosted Carletonville goldfield Reef located 75m CLR horizon. reef formations thicknesses 5cm 20cm. Reef currently focus activities.

Reserves

"To save mine liquidation DRDGOLD plans obtain judicial management order."

The mine contains estimated 25.85mt proven reserves. identified attributable resources estimated 26.35mt.

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Mining

Blyvoor underground mine. mined using conventional drill blast scape narrow-reef methods. Due combined operations Blyvoor Doornfontein ores become accessible methods. Besides underground operations produced waste stockpiles retreatment tailings.

Almost 30% produced re-treatment process. carbon-in-leach (CIL) mine site processes almost 300,000t slimes month. processing capacity slimes re-treatment expanded almost 400,000t month involves investment R10m R15m.

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Exploration

As 2009 focus shaft shaft six taking shaft five. access orebodies hosted 27 35 levels shaft five Ahead Project initiated July 2006. project replaced phase sub-shaft project.

Apart accessing subshaft reserves project included accessing additional reserves south-west block. quarter 2008 borehole levels 31 33 completed. borehole levels 27 31 completed quarter 2009.

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During fourth quarter 2008 mine experienced significant reduction grade loss high-grade panels shaft five.

"Blyvoor won Rand Mine Managers' Association Safety Award nine consecutive years."

Mining volume high-grade reduced due rise seismic activity area. activities increased lower-grade shafts six.

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At commenced 15/29 incline project explore reserves reef CLR. reserves spread across 540,000m² average recovered grade 4.8g/t.

Production expected quarter 2009 postponed due supplier delays. 2009 sinking incline progress.

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Safety

The mine reputation safety. Blyvoor won Rand Mine Managers' Association Safety Award nine consecutive years. received Minister Minerals Energy's Safety Flag.

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