Application of geophysical techniques in mineral ...
However, modern mining dates back to 1906 when the Musina development company started mining the copper ore at the Campbell, Harper, Artonvilla, Messina and Spence mines. Since then over 40 million tons of ore was mined, recovering about 700,000 tons of copper. Copper was recovered from chalcopyrite, bornite and chalcocite. Mining stopped in 1992.