The refinery at Digboi had an installed capacity 0.5 million tonnes per year.

A new delayed Coking Unit of 170,000 tonnes per year capacity was commissioned in 1999.

A new Solvent Dewaxing Unit for maximizing production of microcrystalline wax was installed and commissioned in 2003.

Certified The small town of Digboi in the remote north eastern corner of the country is the birth place of the Oil Industry in India.

[1] Oil was accidentally discovered in 1867 while laying a railway line in Digboi area.