(Nigeria) The Lagos headquarters of United State oil major, ExxonMobil has been shut, following a standoff with blue-collar oil unions over the sacking of 150 ExxonMobil workers. Members of the Petroleum and Natural Gas Senior Staff Association of Nigeria, PENGASSAN, besieged the office of the oil giant, protesting the sacking of Nigerian workers. The standoff is coming on the heels of a similar development on Wednesday in Upkenekang Community in Akwa Ibom, where angry youths disrupting the operations of the company over the sacking of contract workers from the area. The protesters, numbering over 1,000, barricaded entry points to the company with boats, coffins, leaves and placards, having different inscriptions. The Chairman of the ExxonMobil Branch of PENGASAN, Mr Paul Eboigbe, confirmed the closure of the company’s Lagos office. He told NAN that the management of the company went ahead to issue sack letters to worker, while negotiations were still going on. He s