Columbia subject headings:
Chamber of Mines of South Africa--History.
Mineral industries--South Africa--History.
Harvard subject headings:
Chamber of Mines of South Africa--History.
Mineral industries--South Africa--History.
Miners--South Africa--History.
South Africa--Politics and government--20th century.
Princeton subject headings:
Chamber of Mines of South Africa--History.
Mineral industries--South Africa--History.
Miners--South Africa--History.