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August 15, 1985
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Proposal for a Refinery included in "Assam Accord" as a part of Government of India's offered economic package
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June 23, 1989
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IBP Co. Limited appointed as implementing agency (Equity structure IBP:51%, Govt. of Assam:10%, Public:39%)
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May 31, 1991
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Environmental Clearance obtained for Refinery Project
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August 28, 1992
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EIL appointed as Prime Consultant
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July 3, 1992
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Foundation Stone for Refinery laid by Prime Minister of India Shri P.V. Narasimha Rao
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July 15, 1992
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CCEA (Cabinet Committee of Economic Affairs) approval for implementation of Numaligarh Refinery Project
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April 22, 1993
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Numaligarh Refinery Limited incorporated as a Company
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June 2, 1995
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BPCL Inducted as major promoter( Equity structure BPCL:32%, IBP:19%, Govt. of Assam:10%, Public:39%)
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April, 1999
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Numaligarh Refinery commissioned
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July 9, 1999
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Numaligarh Refinery dedicated to the Nation by Prime Minister of India Shri Atal Bihari Vajpayee
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October, 2000
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Commencement of Commercial Operations
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March, 2001
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NRL becomes subsidiary of BPCL
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October 22, 2018
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Public Investment Board (PIB) clearance for Refinery Expansion from 3 MMTPA to 9 MMTPA
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January 16, 2019
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Cabinet Committee of Economic Affairs approval for Refinery Expansion Project at a project cost of Rs. 22,594 Crore
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July 27, 2020
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Environmental Clearance obtained for Refinery Expansion Project
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March 25, 2021
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BPCL exits NRL as major stakeholder. OIL acquires majority shares, Engineers India Limited(EIL) enters as one of the shareholders (Equity structure OIL:80.16%, Govt. of Assam:15.47%, EIL:4.37%)
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October 07, 2021
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MoPNG approves revised Refinery Expansion Project cost of Rs.28,026 Crore
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January 3, 2022
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Share transfer by OIL to Govt. of Assam complete (Equity structure OIL: 69.63%, Govt. of Assam:26%, EIL:4.37%)
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