(AFRICAN EXAMINER) - The NNPC/ Aiteo Joint venture has announced the introduction of Nembe Crude Oil Grade, a new crude oil grade into the international crude oil market. The announcement of the Nembe Crude Oil Blend, produced by Aiteo, the Operator of the NNPC/Aiteo Oil Mining Lease (OML) 29 Joint Venture (JV), was made at