Columbia subject headings:
Mineral industries--Congo (Democratic Republic)--Katanga--History--21st century.
Mines and mineral resource--Congo (Democratic Republic)--History--21st century.
Harvard subject headings:
Mineral industries--Congo (Democratic Republic)--Tanganyika.
Miners--Congo (Democratic Republic)--Tanganyika--Social conditions.
Tantalum industry--Congo (Democratic Republic)--Tanganyika.
Princeton subject headings:
Mineral industries--Congo (Democratic Republic)--Tanganyika.
Miners--Congo (Democratic Republic)--Tanganyika--Social conditions.
Tantalum industry--Congo (Democratic Republic)--Tanganyika.