NIGERIAN National Petroleum Corporation, NNPC, yesterday, announced that the Kaduna, Port Harcourt and Warri refineries had resumed production of Dual Purpose Kerosene, DPK, and Automotive Gas Oil, AGO, otherwise known as kerosene and diesel respectively. Similarly, Nigeria Liquefied Natural Gas, NLNG, blamed the current scarcity and high cost of Liquefied Petroleum Gas, LPG, nationwide on the inability of its LPG vessel to berth and discharge its contents at the Apapa ports since December 29, 2016, due to congestion of the port facility.