The Correct Answer is Bhilai, Durgapur, Rourkela.

• Durgapur Steel Plant is one of the integrated steel plants of Steel Authority of India Limited, located in Durgapur, West Bengal.
• It was set up in 1959 with the help of the United Kingdom.
• The Rourkela Steel plant was set up in collaboration with German firms viz. Krupp and Demag.
• It started in 1961.
• The Bhilai Steel Plant was set up with the technical assistance of the Soviet Union in September 1967.

• Steel is an iron alloy that contains around 0.2% to 2.1% Carbon.
• In 1870 a small plant was founded by James Erskine in the jungles of Kulti to make iron.
• This produced only Cast Iron.
• Salem Steel Plant, a unit of Steel Authority of India Limited, is a steel plant involved in the production of stainless steel in 1981.
• It is located along the Salem — Bangalore National Highway 44 in the foothills of Kanjamalai in Salem district, Tamil Nadu, India.

• IISCO Steel Plant of Steel Authority of India Limited is an integrated steel plant located at Burnpur, a neighborhood in Asansol city, in the Asansol subdivision of Paschim Bardhaman district, West Bengal, India.
• It was established in 1918.
• Bengal Iron Works Company became Burrakar Iron Works in 1881 and was renamed Bengal Iron and Steel Company in 1890.
• Later in 1926 the company again changed its name to Bengal Iron Company Ltd.
• The name of the town where TISCO was founded by Jamshedji was given by Lord Chelmsford in 1919.
• New steel plants were started at Salem in Tamil Nadu, Vijayanagar in Karnataka, and Vishakhapatnam in Andhra Pradesh.