AFRICAN MIRROR REPORTER THE South African Broadcasting Corporation (SABC), one of Africa’s biggest broadcasters, is pressing ahead with retrenchments which are expected to lead to over 450 media workers losing their jobs. The retrenchments have led to protest action by SABC employees and a disruption of the public broadcaster's service. Workers have also threatened a full blown strike which could lead to a total black out of TV and radio services on which millions of South Africans depend. On Tuesday, member of the SABC newsroom head a heated meeting with their boss - head of news Pathiswa Magopeni - who…