The Guardian | Angolan president sacks predecessor's daughter as state oil chief The Guardian Oil provides 70% of Angola's revenues and almost all of its hard currency, while many of the country's citizens are mired in poverty. Angola, which along with Nigeria is one of Africa's top oil producers, has been in the grip of an economic crisis ... Africa's richest woman removed as head of Angola state oil group Isabel Dos Santos sacked from Angola state oil firm Africa's richest woman sacked from Angolan oil group in boardroom coup |