<Table> <Tr> <Th_colspan="2"> Digboi </Th> </Tr> <Tr> <Td_colspan="2"> town </Td> </Tr> <Tr> <Td_colspan="2"> Nickname (s): The Oil Town </Td> </Tr> <Tr> <Td_colspan="2"> Digboi Location in Assam, India Digboi Digboi (India) Show map of Assam Show map of India Show all </Td> </Tr> <Tr> <Td_colspan="2"> Coordinates: 27 ° 23 ′ N 95 ° 38 ′ E ﻿ / ﻿ 27.38 ° N 95.63 ° E ﻿ / 27.38; 95.63 Coordinates: 27 ° 23 ′ N 95 ° 38 ′ E ﻿ / ﻿ 27.38 ° N 95.63 ° E ﻿ / 27.38; 95.63 </Td> </Tr> <Tr> <Th> Country </Th> <Td> India </Td> </Tr> <Tr> <Th> State </Th> <Td> Assam </Td> </Tr> <Tr> <Th> District </Th> <Td> Tinsukia </Td> </Tr> <Tr> <Th_colspan="2"> Government </Th> </Tr> <Tr> <Th> Body </Th> <Td> Digboi Municipality </Td> </Tr> <Tr> <Th> Elevation </Th> <Td> 165 m (541 ft) </Td> </Tr> <Tr> <Th_colspan="2"> Population (2001) </Th> </Tr> <Tr> <Th> Total </Th> <Td> 20,405 </Td> </Tr> <Tr> <Th_colspan="2"> Languages </Th> </Tr> <Tr> <Th> Official </Th> <Td> Assamese </Td> </Tr> <Tr> <Th> Time zone </Th> <Td> UTC + 5: 30 (IST) </Td> </Tr> <Tr> <Th> PIN </Th> <Td> 786171 </Td> </Tr> <Tr> <Th> ISO 3166 code </Th> <Td> IN - AS </Td> </Tr> <Tr> <Th> Vehicle registration </Th> <Td> AS - 23 </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Digboi </Th> </Tr> <Tr> <Td_colspan="2"> town </Td> </Tr>

Who discovered the occurrence of oil in assam