Stephen Sackur talks to Rob Davies, South Africa’s Minister for Trade and Industry.The labour unrest in South Africa’s platinum mines has claimed the lives of dozens and produced the kind of violence not seen since apartheid. The strike has driven up the cost of platinum prices and shaken investor confidence. It has also drawn the world’s attention to the low wages and poor working conditions of South Africa’s miners. Is the call to invest in Africa’s biggest economy being stifled by the rage against social and economic disparity?(Image: Rob Davies addressing the media at the TIME / FORTUNE / CNN Global Forum in June 2010. Credit: Getty Images)