Two of South Africa's (SA) biggest trade unions have rejected an improved 6% salary increase offer from state-owned power utility Eskom, their representatives said this Tuesday. Eskom has dragged on Africa's largest economy for years, owing to power cuts and the company's financial troubles, but improved performance from its coal-fired power stations has halted outages and brought the first annual profit in eight years. Khangela Baloyi, NUM National Energy Sector Coordinator explains why this 6% offer, above inflation at 3.6%, is still unacceptable to NUM. Kaya FM