BOKSBURG, SOUTH AFRICA – JUNE 3: National Union of Mineworkers delegates during the 15th NUM National Congress on June 3, 2015 at the Birchwood Hotel in Boksburg, South Africa. NUM has called on the minister of mineral resources to suspend the mining licences of companies that are failing to comply with the Mining Charter. (Photo by Gallo Images / Sowetan / Veli Nhlapo)
