Zuma to Cosatu: New retirement fund law is going ahead, like it or not January 28, 2016 DA jobs march brings Joburg city centre to standstill General Kumba to cut almost 4,000 jobs in restructuring of Sishen iron ore minePosted by admin BDLive reports that Kumba Iron Ore has embarked on restructuring its flagship Sishen mine, affecting 2,633 of its staff and 1,300 contractor employees. Source: Latest News