What on earth is NUPENG???

I always had that question on my mind!! So, there's this one-storey building at jibowu street in Yaba, Lagos state. It has NUPENG written on it. From the little research I've done, it's the headquarters of the UNION (I hate Nigerian Unions) and has three other branches in Portharcourt, Kaduna and Warri (lol, the refinery states). I find it weird that the Union was inaugurated in Benin City, of all places, in 1977. Officially registered as a union on the 15th of August, 1978, the Nigeria Union Of Petroleum and Natural Gas Workers (NUPENG) became an official part of the NLC. On 1st of February, Igwe Achebe was elected as its new President with Joseph Ogbebor as secretary. Just one month later... NUPENG went on strike!!!!