Anger in Nigeria's south over oil spill clean-up delay Under a leaden sky in oil-rich southern Nigeria, young men hang around with nothing to do, covering their noses from the noxious fumes of the polluted swamp. One year after the launch of a much-heralded clean-up programme, the oil slicks which blackened the waters, killed the fish and ruined the mangroves remain untouched. A voiced AFPTV report.