Diamond miner Petra Diamonds and labour union the National Union of Mineworkers (NUM) have signed a five-year wage agreement covering Petra’s South African operations for the period July 1, this year, to June 30, 2029. Employees in the A and B Paterson bands will receive a wage increase of 6.25% or Consumer Price Index (CPI), depending on which one is higher, for year one of the agreement.