Despite the restriction in freedom, the country enjoyed improved economic development as Kountché sought to create a 'development society', funded largely by the uranium mines in Agadez Region. Several parastatal companies were created, major infrastructure (building and new roads, schools, health centres) constructed, and there was minimal corruption in government agencies, which Kountché did not hesitate to punish severely. In the 1980s Kountché began cautiously loosening the grip of the military, with some relaxation of state censorship and attempts made to 'civilianise' the regime. However the economic boom ended following the collapse in uranium prices, and IMF-led austerity and privatisation measures provoked opposition by many Nigeriens. In 1985 a small Tuareg revolt in Tchintabaraden was suppressed. Kountché died in November 1987 from a brain tumour, and was succeeded by his chief of staff, Col. Ali Saibou, who was confirmed as Chief of the Supreme Military Council four days later.