Hint: The crude oil produced from the offshore oil field is of very good quality as compared to the crude quality of the middle east. This oil field is run by India’s Oil and Natural Gas Corporation (ONGC).The mines in Karnataka are located on the iron ore belt of Bellary-Chitradurga-Chikmagalur-Tumkur belt.
Complete Answer: I. The Bombay high or Mumbai High, an offshore oil field was
discovered by an exploration team of the Indian oil in 1964 - 67. It is located 176 kilometres
north-west of Mumbai on the continental shelf off the coast of Maharashtra. It accounts for about
15 percent of India’s oil requirements and near about 38 percent of our domestic production. The
Bombay High produced 110,000 barrels per day as of 2005. With the help of a specially designed
platform, Sagar Samrat, the oil is obtained from a depth of over 1400 metres. The is
divided into two different blocks on the basis of shale barrier - Mumbai High North (MHN) and
Mumbai High South (MHS).
II. Kudremukh mines are one of the iron ore mines of Karnataka.Kudremukh Iron Ore Company Limited is an Indian Government enterprise. Its headquarter is in Bangalore. It was founded in 1976 and was stopped in 2011. It resumed its production again in 2014 and produces iron ore concentrates and iron oxide pellets. These pellets have been shipped to countries like Iran, Japan, China and Taiwan.
Note: The Digboi oilfield is the oldest onshore oilfield in India located in the Dibrugarh district of Assam. The iron and steel industry is called a heavy industry because of its raw materials such as iron ore, manganese, limestone. These raw materials are quite heavy.