I Arnold Minenkulu Arnold started my career as operation apprentice employee on 01 August 1985 at Engen Oil Refining Company former known as Mobil .I was introduced to operation training programs as the years went by I was promoted to senior process operator (Senior Process Technician and continued with training programs and promoted to work as Panelman/Boardman in the process control room where I was monitoring and controlling production process movement , receipts and transfers of oil products to and from various companies and to marketing of finished products such as diesel and gasoline (petrol) and occasionally acted on supervision position when needed. I then decided to take an early retirement on 31August2020 was my last of work at Engen Refinery.