Solution:The details are as follows:(1) Petronet LNG Ltd. is an Indian oil and gas company formed by the government of India to import liquefied natural gas (LNG) and set up LNG terminals in the country. It is a joint venture company promoted by the Gas Authority of India Limited (GAIL), Oil and Natural Gas Corporation Limited (ONGC) and Bharat Petroleum Corporation Limited (BPCL) with an authorised capital. Petronet LNG Ltd has set up its first LNG terminal at Dahej in Gujarat with a capacity of 17.5 million metric Tonnes per year. Another terminal with capacity 5 million tonnes per year was commissioned in Kochi (Kerala).
(2) The Head Office of Dredging Corporation of India is strategically located on the eastern seaboard of India at Visakhapatnam. DCI helps to ensure the continuous availability of the desired depths in shipping channels of the Major and Minor Ports, Navy, fishing harbours and other maritime organisations. The horizons of dredging activities are fast expanding worldwide, and its services are increasing in demand and put to use in the areas of Environmental Protection, Tourism, Flood control, Irrigation, Power generation, Port development, Mining, Laying of Offshore Pipelines and so on.
(3) Narwapahar Mine is the trackless uranium mine located in Jharkhand which is being operated by Uranium Corporation of India Limited.