By Yetunde Bada The Group Managing Director of the Nigerian National Petroleum Corporation (NNPC), Dr Maikanti Baru, on Friday appealed to the Nigeria Union of Petroleum and Natural Gas Workers (NUPENG) to reconsider a 15-day ultimatum it issued the Federal Government. A statement issued in Abuja by the NNPC Spokesman, Mr Ndu Ughamadu, said Baru …