13 per cent derivation: Ijaw Youth threaten to cripple Nigeria’s oil production May 15, 2014 on Group Positions, News, Op-Ed, Opinion by Premium Times 13 per cent derivation: Ijaw Youth threaten to cripple Nigeria’s oil production May 15, 2014 on Group Positions, News, Op-Ed, Opinion by Premium Times “The Niger Delta people are still willing, ready and capable of bringing the Nigeria economy to its knees.”