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Assmang Manganese Mines Northern Cape Province Mining Early in 2000 Assmang announced an expansion involving the development of a new shaft complex at Nchwaning to add about 2Mt y of run of mine ore capacity to make Nchwaning the world 39 s lowest cost underground manganese mine and to extend its lifetime by about 30 years The expansion including additional nbsp
Supergene Ferromanganese Wad Deposits Derived from Permian Abstract A previously unknown type of ferromanganese wad deposit is described at the Ryedale mine situated 110 km west of Johannesburg in the northwestern province of South Africa The wad was derived from supergene alteration of Glossopteris bearing Permian strata of the Karoo Supergroup that fill shallow karstic nbsp
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