� March. 12, 1944 : Dr. Homi Jehangir Bhabha writes to Sir Dorabji Tata Trust for starting Nuclear Research in India
� December 19, 1945 : Tata Institute of Fundamental Research (TIFR) Mumbai is inaugurated.
� April 15, 1948 : Atomic Energy Act is passed
� August 10, 1948 : Atomic Energy Commission is constituted
� July 29,1949 : Rare Minerals Survey Unit brought under Atomic Energy Commission and named as 'Raw Materials Division' (RMD), with Headquarters at New Delhi. In 1958, this unit becomes Atomic Minerals Division (AMD), and later in 1974, shifts to Hyderabad. It is renamed as Atomic Minerals Directorate for Exploration and Research (AMD) on July 29, 1998.
� August 18, 1950 : Indian Rare Earths Limited (IRE), owned by the Government of India and Government of Travancore, Cochine, is set up for recovering minerals, processing of rare earths compounds and Thorium - Uranium concentrates. In 1963, IRE becomes a full-fledged government undertaking under DAE
� April 1951: Uranium Deposit at Jaduguda is discovered by AMD. Drilling operations commence in December 1951.
� December 24, 1952 : Rare Earths Plant of IRE at Alwaye, Kerala, is dedicated to the nation and production of Rare Earths & Thorium - Uranium concentrate commences.
� August 03, 1954 : Department of Atomic Energy is created.
� August 01, 1955 : Thorium Plant at Trombay goes into production. Thorium Plant at Trombay is closed.
� 1956 : AMD discovers uranium mineralisation at Umra, Rajasthan.
� August 04, 1956 :APSARA - first research reactor in Asia, attains criticality at Trombay, Mumbai.
� January 20, 1957 : Atomic Energy Establishment, Trombay (AEET) is inaugurated
� August 19, 1957 : AEET Training School starts functioning at Trombay.
� January 30, 1959 :Uranium Metal Plant at Trombay produces Uranium.
� February 19, 1960 : First lot of 10 Fuel Elements for CIRUS reactor, is fabricated at Trombay
� July 10, 1960 : CIRUS � the 40 MWt research reactor, attains criticality. After its successful refurbishment, the reactor was dedicated to the Nation on October 31, 2002.
� January 14, 1961 : Research Reactor ZERLINA attains criticality. (It is decommissioned in 1983).
� 1965: IRE takes over operation of Mineral Processing Unit at Manavalakurichi in TamilNadu and at Chavara in Kerala.
� January 22, 1965 : Plutonium Plant is inaugurated at Trombay. � January 22, 1967 : AEET is named as Bhabha Atomic Research Centre (BARC).
� April 11, 1967 : Electronics Corporation of India Limited (ECIL) is set up at Hyderabad for producing electronic systems, instruments and components.
� June 1, 1967 : Power Projects Engineering Division (PPED), Mumbai is formed. The Division is subsequently converted to Nuclear Power Board on August 17, 1984.
� October 4, 1967: Uranium Corporation of India Limited (UCIL) is established with head quarters at Jaduguda Mines in Jharkhand (then Bihar).
� May 1968: Uranium Mill at Jaduguda, with a capacity of 1,000 TPD, commences commercial production ofMagnesium diuranate (yellow cake). Jaduguda Mine Shaft is commissioned in November
1968.
� December 31, 1968 : Nuclear Fuel Complex is set up at Hyderabad, Andhra Pradesh.
� March 12, 1969 : Reactor Research Centre (RRC) starts at Kalpakkam, Tamil Nadu. The Centre is fully established in 1971. It is named as Indira Gandhi Centre for Atomic Research (IGCAR) on December 18, 1985.
� May 01, 1969 : Heavy Water Projects is constituted at Mumbai. This later becomes Heavy Water Board.
� October 02, 1969 : Tarapur Atomic Power Station starts commercial operation.
� 1970 : AMD hands over the Uranium Deposit at Narwapahar to UCIL.
� September 06, 1970 : Uranium-233 is separated from irradiated Thorium
� February 18, 1971 : Plutonium fuel for Research Reactor PURNIMA-I is fabricated at Trombay.
� 1972 : AMD hands over the beach sand heavy mineral deposits of Chhatrapur, Orissa and Neendakara-Kayankulam, Kerala to IRE.
� February 3, 1972 : DAE Safety Review Committee is formed.
� May 18, 1972 : Research Reactor PURNIMA-I attains criticality.
� November 30, 1972 : Unit-1 of Rajasthan Atomic Power Station at Rawatbhatta, near Kota, Rajasthan, begins commercial operation. Unit II goes commercial on November 1, 1980.
� 1974: By-product Recovery Plant of UCIL at Jaduguda is commissioned.
� May 18, 1974 : Peaceful underground Nuclear Experiment is conducted at Pokhran, Rajasthan.
� March 1975 : Commercial production of Uranium Mineral Concentrates from Copper plant tailings at Surda, Hindustan Copper Limited commenced.
� May 1975 : Commercial production of by-products -Molybdenumand Copper concentrates starts.
� September 1975 : Surda Uranium Recovery Plant of UCIL is commissioned.
� June 16, 1977 : Variable Energy Cyclotron becomes operational at Kolkata.
� 1978 : High-sensitivity airborne spectrometric and magneto metric surveys started.
� 1979 : AMD hands over Bhatin and Turamdih (East) uranium deposits (now in Jharkhand State) to UCIL.
� Nov 18, 1979 : Plutonium-Uranium Mixed Oxide (MoX) fuel is fabricated at Trombay.
� November 19, 1982 : BARC's Power Reactor Fuel Reprocessing Plant at Tarapur is commissioned.
� 1983 : Fbtr attains first criticality.
� February 1983 : Rakha Uranium Recovery Plant of UCIL is commissioned.
� November 15, 1983 : Atomic Energy Regulatory Board (AERB) in Mumbai is constituted.
� 1984 : Sandstone-type uranium deposit at Domiasiat, Meghalaya is discovered.
� January 27, 1984 : Madras Atomic Power Station - Unit I at Kalpakkam starts commercial operation. Unit II goes commercial on March 21, 1986.
� February 19, 1984 : Centre for Advanced Technology (CAT) at Indore (Madhya Pradesh) is inaugurated.
� March 08, 1984 : Plutonium - Uranium mixed Carbide Fuel for Fast Breeder Test Reactor (FBTR) is fabricated at Trombay.
� May 10, 1984 : Research Reactor PURNIMAII, a Uranium-233 fuelled homogenous reactor, attains criticality.
� 1985 : AMD hands over the Bodal uranium deposit to UCIL.
� March 05, 1985 : Waste Immobilisation Plant (WIP) at Tarapur is commissioned. August 08, 1985 : Research Reactor DHRUVA (100 MWt) attains criticality. It attains full power on January 17, 1988. October 18, 1985 : FBTR at IGCAR attains criticality.
� 1986 : Dredge Mining, Mineral Separation and Synthetic Rutile Plant at OSCOM, Chhatrapur, Orissa is commissioned by IRE. HERO Project at Alwaye, Kerala, is commissioned. Production is started at OSCOM.
� October 1986 : Bhatin Mine is commissioned by UCIL and the ore is transported to Jaduguda mill for processing.
� December 1986 : Mosaboni Uranium Recovery Plant of UCIL is commissioned.
� 1987 : AMD hands over Turamdih (West) uranium deposits to UCIL, and beach sand deposits in Tamil Nadu to IRE.
� September 17, 1987 : Nuclear Power Corporation of India Limited (NPCIL) is formed by converting the erstwhile Nuclear Power Board.
� 1988 : AMD hands over the Kuttumangalam and Vettumadia sand deposits, Tamil Nadu to IRE.
� December 30, 1988 : 12 MV Pelletron Accelerator is inaugurated in Mumbai. The accelerator is a joint endeavour of BARC & TIFR.
� 1989 : AMD Training School is inaugurated. Board of Radiation and Isotope Technology (BRIT) is constituted.
� January 3, 1989 : Regional Radiation Medicine Centre (RRMC) is inaugurated at Kolkata.
� March 12, 1989 : Narora Atomic Power Station Unit I attains criticality. Its Unit II attains criticality on October 24, 1991.
� 1990 : Dolostone -hosted uraniummineralisation in the western margin of Cuddapah basin is discovered. Mineral Research Development Centre (MRDC) of IRE is launched at Kollam. HERO Plant is commissioned at Alwaye. Dredge & Wet Concentrator Plant at Chavara, Kerala, is commissioned.
� November 09, 1990 : Research Reactor PURNIMA-III, a Uranium-233 fuelled reactor, attains criticality.
� 1991: AMD discovers uranium mineralisation at Lambapur, Nalgonda district, Andhra Pradesh and produces upgraded xenotime concentrate at 'Pre-concentrate Upgradation Plant' (PUP) at Kunkuri.
� May 16, 1991: First ECR heavy ion source of the country becomes operational at the Variable Energy Cyclotron Centre.
� 1992 : First remotely operated radiography camera is launched. Significant heavy mineral concentration along the East Coast, Andhra Pradesh, is identified. New Thorium Plant at OSCOM, Chhattrapur, Orissa is commissioned by IRE.
� September 03, 1992 : Kakrapar Atomic Power Station - Unit I attains criticality. Its Unit II attains criticality on January 08, 1995
� 1993 : BARC supplies one millionth radioisotope consignment.
� 1995 : Research Irradiator Gamma Chamber 5000 is launched by BRIT.
� January 1995 : Narwapaharmine is inaugurated.
� 1996 : 30kWt Kamini Reactor attains criticality. The reactor is taken to full power in September, 1997.
� March 27, 1996 : Kalpakkam Reprocessing Plant (KARP) is cold commissioned. KARP is dedicated to the nation on September 15,1998.
� October 20, 1996 : Kalpakkam Mini Reactor (KAMINI), with Uranium-233 fuel, attains criticality at IGCAR, Tamilnadu.
� 1997 : AMD discovers of uraniummineralisation in brecciated limestone at Gogi, Gulbarga district, Karnataka in the Bhima basin. Microzir Plant is commissioned in Chavra, Kerala.
� March. 31, 1997 : Rajasthan Atomic Power Station Unit-1 is re-commissioned.
� December 1997: Jaduguda Mill is expanded to treat 2,090 tonnes ore per day. PRYNCE (95% NeodymiumOxide) Plant is commissioned at Rare Earths Division.
� May 11 & 13, 1998 : Five underground nuclear tests are conducted at Pokhran Range, Rajasthan.
� May 27, 1998 : Rajasthan Atomic Power Station Unit-2 is re-commissioned after enmasse replacement of coolant channels.
� August 10, 1998 : The 500 keV industrial electron accelerator developed indigenously by the BARC is commissioned for its first phase of operation. Ammonium diuranate (ADU) production commences at Rare Earths Division of IRE at Alwaye, Kerala.
� April 22, 1999 : 450 MeV Synchrotron Radiation Source Indus-1 achieves electron beam current of 113 milli-ampere superceding the design value of 100 milli-ampere.
� July 1999 : Solid Storage and Surveillance Facility (S3F) is commissioned at Tarapur. September 24, 1999 : Unit-2 of Kaiga Atomic Power Station attains criticality. It is synchronised to the grid on December 02, 1999, and becomes commercial on March 16, 2000.
� December 24, 1999 : Unit-3 of Rajasthan Atomic Power Station attains criticality. It is synchronised to the grid on March 10, 2000, and becomes commercial on June 2, 2000.
� January 1, 2000 : BRIT's Radiation Processing Plant at Vashi, Navi Mumbai is commissioned. 2000 : Boron Enrichment Plant is commissioned at IGCAR, Kalpakkam.
� March 8, 2000 : Tarapur Atomic Power Project �3&4 rises up.
� March, 2000 & May 2000 : First concrete pour of Unit-3 and Unit-4 of Tarapur Atomic Power Project-3 & 4.
� April 21, 2000 : Folded Tandem Ion Accelerator (FOTIA) at Trombay delivers first beamon target.
� September 26, 2000 : Unit-1 of Kaiga Atomic Power station attains criticality. It synchronises to the grid on October 12, 2000.
� November 03, 2000 : Unit-4 of Rajasthan Atomic Power station attains criticality. It creates history by synchronising with the grid within a period of 14 days on November 17, 2000. The unit becomes commercial on December 23, 2000.
� November 16, 2000 : Unit - 1 of Kaiga Atomic Power Station becomes commercial. 2001 : FBTR fuel reaches burn up of 100,000MWd/ T.
� March 18, 2001: Units 3& 4 of Rajasthan Atomic Power Stations dedicated to the nation.
� February 12, 2002 : India signs the biggest contract with the Russian Federation for the Nuclear Power Station at Kudankulam, Tamil Nadu. March
� 30 & May 10, 2002 : First pours of concrete respectively of Unit-3 and Unit-4 of Kaiga Atomic Power Project 3 & 4.
� March 31, 2002 : First pour of concrete of Units 1&2 of Kudankulam Atomic Power Project.
� September 18, 2002 : First pour of concrete of Unit-5 of Rajasthan Atomic Power Project 5 & 6
� October 31, 2002 :Waste Immobilisation Plant and Uranium-Thorium Separation Plant at (both at Trombay), and the Radiation Processing Plant Krushak at Lasalgaon, district Nasik, Maharashtra, are dedicated to the Nation.
� November 2002 : UCIL's Turamdih Mine, Jharkhand is inaugurated and Technology Demonstration Pilot Plant becomes operational at Jaduguda.
� 2003 : 1.7 MeV Tandetron Accelerator and the demo facility LeadMini Cell (LMC), for reprocessing of FBTR carbide fuel on lab scale, are commissioned at IGCAR.
� 06-March-2005 : India's first 540MWe Nuclear Power Reactor Tarapur Unit 4 Attains Criticality.
� 04-June-2005 : TAPS 4 synchronised to the grid