Shows a barb wire fence - with electric alarm attached which encloses diamond miners and compounds - taken at Dutoitspan mine. [Shantz travel journal, Sep. 24, 1919]
from the Smithsonian African Expedition, 1919-1920
Shows a barb wire fence - with electric alarm attached which encloses diamond miners and compounds - taken at Dutoitspan mine. [Shantz travel journal, Sep. 24, 1919]