Why diversify?

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Today the six week strike at the South African platinum mine that led to the most deadly police action since the apartheid era comes to an end. President Jacob Zuma said this week that the disruption had cost the industry more than half a billion dollars in lost output but what about the effects on investor confidence and on the broader economy, asks Matthew Davies in Johannesburg. Justin Rowlatt explores whether the solution to industrial unrest could lie in economic diversification with Andreas Woergoetter of the OECD and we hear from Nigeria about the challenges of an influx of unskilled workers.