Columbia subject headings:
Gold mines and mining--South Africa--Witwatersrand.
Miners--South Africa--Witwatersrand--History.
Witwatersrand Strike, 1922.
Working class--South Africa--Witwatersrand--History.
Harvard subject headings:
South Africa--History.
Strikes and lockouts--Gold mining--South Africa--History.
Transvaal (South Africa)--History--1910-
Princeton subject headings: