Showing 80 results

Archival description
Historical Papers Research Archive, University of the Witwatersrand James Charles Napoleon Humphreys, Mining papers Series
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Asbestos
Asbestos
Tin
Tin
Diamonds
Diamonds
Copper
Copper
Uranium and Radium
Uranium and Radium
Silver
Silver
Platinum
Platinum
Mica
Mica
Cape Province
Cape Province
Chrome
Chrome
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