distinction of being India's oldest continuously producing oilfield. Digboi refinery, now a division of Indian Oil Corporation, had a capacity of about 0.65 million tonnes per year as of 2003. Digboi is now Headquarter of Assam Oil Division of Indian Oil Corporation Limited. The Earliest recorded to the existence of oil in India is found in the memories and dispatches of the Army Officers who penetrated the jungles of Upper Assam since 1825. Lt. R. Wilcox, Major A. White, Capt. Francis Jenkins, Capt. P.S. Hanney—they all saw at different times petroleum exuding from banks of the Dihing River. Mr. C.A. Bruce (1828) and Mr. H.B. Medicott (1865) of the Geological Survey of India also saw oil while prospecting for coal in Upper Assam. Mr. Goodenough of McKillop, Stewart & Co. Calcutta was the first in India to start a systematic programme of drilling for oil in November 1866, at Nahorpung about south east of Dibgoi, just seven years after the world's first commercial oil well was drilled in 1859, by Col Edwin L Drake in Pennsylvania, USA. This hand dug well—the first oil well in India—was drilled up to and proved dry. However the second well struck oil at Makum near Tinsukia, about from Digboi. In 1939, there was a major labour union strike in the Refinery. The Gandhi Movement of Congress for Indian Independence struggle; backed by labour rights and equality status was headed by Sardar Amar Singh Marwah. The break of the World War II coincided with the Digboi labour strike resulted in harsh steps taken by the British Administrative offices to crush the strike. The Viceroy and the Governor had intervened to bring a settlement adopting sturdy steps were take to crush the union by shooting down of the president of the labour union to be followed by issuing orders of Quit Digboi, Quit Lakhimpur and finally Quit Assam to the leaders of the labour union. Digboi Refinery The Digboi Refinery modernization project was taken up in large-scale in order to overcome the technological obsolescence of the old refinery. Subsequently, a number of other major projects were undertaken by Assam Oil Division to further revamp and modernise Digboi Refinery.Digboi refinery has been awarded the ISO-14001 and OHSMC certificate. Geography Digboi is located at 27°22'48.0"N 95°37'48.0"E. It has an average elevation of 165 metres (541 ft).It is situated 510 km north east of Guwahati. Demographics India census, Digboi