Miners in South Africa have rejected a 9 percent wage increase from the country’s platinum producers.

Earlier, thousands of workers near Lonmin’s Marikana mine – the scene of the police killing of 34 strikers in 2012 – jeered when they were told about the tabled offer.

The country’s AMCU union is seeking a doubling in miners wages to around 800 euros a month.

The move to reject the pay offer prolongs a week of industrial action which is already estimated to have hit around 40 percent of the global supply of platinum.

That in turn has helped push South Africa’s rand currency to a five year low.