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Historical Papers Research Archive, University of the Witwatersrand James Charles Napoleon Humphreys, Mining papers
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Underground workings of South Reef
Underground workings of South Reef
Volstruis Ests. & G. M. Co., Ltd.
Volstruis Ests. & G. M. Co., Ltd.
Marie Rose
Marie Rose
Underground workings of Main Reef and Main Reef Leader
Underground workings of Main Reef and Main Reef Leader
Underground workings of South Reef and Bird Leader
Underground workings of South Reef and Bird Leader
Underground workings
Underground workings
Aurora West United Gold Mining Co., Ltd.
Aurora West United Gold Mining Co., Ltd.
Central Rand Producers
Central Rand Producers
Underground workings
Underground workings
Underground workings
Underground workings
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