Oil & Gas Backlog Of Cash Call Affecting Investment In The Oil Industry-PENGASSANBy orientalnewsngJuly 24, 20150 Yemisi Izuora The Petroleum and Natural Gas Senior Staff Association of Nigeria Nigerian (PENGASSAN) advised the Federal Government to put… Share this:Share Click to email a link to a friend (Opens in new window) Email Tweet Click to share on Reddit (Opens in new window) Reddit