Oil And Gas Navy destroys 637 illegal refineries in N’Delta OrientEnergyReview Feb 12, 2019 0 The Nigerian Navy (NN) says it has destroyed no fewer than 637 illegal refineries in the Niger Delta in 2018, through “Operation River Sweep’’. The Chief of Naval Staff, Vice Admiral Ibok-Ete Ibas, disclosed this on Monday in Abuja, while…