The huge Cabora Bassa dam project in Mozambique was a collaboration between South Africa, Rhodesia and Portugal. The project was intended to supply electricity to South Africa. This poster advertised a teach-in to mobilise opposition to investment by British companies in the dam. The campaign was organised by the Dambusters Mobilising Committee, a coalition of groups that included the AAM, Haslemere Group and Committee for Freedom in Mozambique, Angola and Guiné.