Seismic energy released by the deep mining operations in the Transvaal and Orange Free State during 1971
By: by L. M. Fernandez.
Series: Seismologic series,; 2
Publisher: Govt. Printer
Published: 1973
Place of publication: Pretoria
Language: eng
Number of pages: 14
Subjects: Seismology -- South Africa -- Transvaal.; Seismology -- South Africa -- Orange Free State.; Gold mines and mining -- South Africa -- Transvaal.; Gold mines and mining -- South Africa -- Orange Free State.
Notes: Includes bibliographical references.
Folded map inserted.
Summary in Afrikaans.