The Government of India has declared some key industrial sectors as significant for the country.
The infrastructure of the Eastern Indian state of Assam, particularly roads, railway etc. plays an important role in enhancing the industrial scenario of the state. The Lokpriya Gopinath Bordoloi International Airport, Guwahati was famous since it was the 12th busiest airport of the country in the year 2012. Dibrugarh and Guwahati are well connected by a great network of rail, road and airports and therefore they have transformed into significant industrial units of Assam. International flights are scheduled to be introduced in the airport of Dibrugarh, especially for the destinations to South-Asian countries. It is believed that Dibrugarh is amongst the 10 most prosperous revenue districts in this state. Tinsukia is yet another nerve centre for industries in Assam.
Statistics are of the view that Assam is an important producer of crude oil and about 15% of the nation's crude output is a consequence of the production of crude oil here. Makum is a region in Assam where oil wells have been drilled mechanically, in 1867. There are as many as four oil refineries located in this state, namely Numaligarh, Digboi, Bongaigaon and Guwahati. Digboi was the very first place where the first refinery of Asia was established. Duliajan houses the organization known as Oil India Limited, which is the greatest oil company in the public sector.
Other industries which thrive in this Indian state are the petrochemical industries at Bongaigaon and Namrup, sugar mills at Kampur, Barua Bamun Gaon, cement plant at Bokajan & Badarpur, paper mills at the places of Jogighopa, Jagiroad and Panchgram, cosmetics plant of Hindustan Unilever (HUL) at Doomdooma and many more. Silk mills, jute mills, textile mills are amongst the several other local industries which are present in the state of Assam.