Columbia subject headings:
AIDS (Disease)--Economic aspects--South Africa.
Industrial hygiene--South Africa.
Mineral industries--South Africa.
Harvard subject headings:
AIDS (Disease)--South Africa
Foreign workers--Health and hygiene--South Africa.
HIV infections--South Africa.
Migrant labor--Health and hygiene--South Africa.
Mineral industries--Employees--Health and hygiene--South Africa.
Mineral industries--Labor productivity--South Africa.
Miners--Health and hygiene--South Africa.
Miners--Medical examinations--South Africa.
Princeton subject headings: