India’s flagship national oil company and downstream petroleum major, Indian Oil Corporation Ltd. (IndianOil) celebrated its Golden Jubilee during 30th June - 1st September 2009. Established as an oil marketing entity on 30th June 1959, Indian Oil Company Ltd. was renamed Indian Oil Corporation Ltd. on 1st September 1964, on merger of Indian Refineries Ltd. (Estd. 1958) with it. IndianOil has since grown into the country’s largest commercial enterprise and India’s No.1 company in the prestigious Fortune'Global 500' listing of the world’s largest corporates, currently at the 125th position. It is also the 21st largest petroleum company in the world.