LONDON/MARIKANA, South Africa, March 14 (Reuters) – Rising wage costs and strikes have revived the arguments in favour of automating South Africa’s loss-making platinum mines, but weak prices for the metal and tough conditions underground mean mechanisation remains a distant prospect.
The rest of the mining industry, from copper to coal, has been transformed in recent decades by automation, unmanned trucks and remotely controlled equipment.
That is in large part thanks to geology. In the cramped mines where platinum is found, the rock is still drilled, blasted and cleared by men. The platinum seams are damp, sweltering and claustrophobic places to work: men often drill in shafts so constricted that it is like mining under a table.
Mines are evacuated for hours a day so blasting can take place – a major inefficiency for operations with the thinnest of profit margins.
But mechanising platinum would be costly and the mining companies need to be convinced it is worth it. “They would need to believe that any investment in platinum mechanisation would significantly drive them down the cost curve,” said analyst Alison Turner at Panmure Gordon.