Asia's oldest oil refineries in Assam and its environmental impact By nayanikaphukan 13 Jan 2023 Digboi Refinery was commissioned on 11th December 1901 and is India’s oldest operating refinery and one of the oldest operating refineries in the world. Read More
/ground-report/media/post_banners/wp-content/uploads/2023/01/digboi-refinery.jpg)