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Smiling Buddha

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Title: Smiling Buddha  
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Subject: Pokhran-II, A. P. J. Abdul Kalam, Nuclear proliferation, Waman Dattatreya Patwardhan, India and weapons of mass destruction
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Smiling Buddha

Smiling Buddha
The Indian nuclear test site in Rajasthan is adjacent to its western neighboring country, Pakistan
Country India
Test site Pokhran Test Range (IA)
Period 18 May 1974, 8:05 a.m. (IST)
Number of tests 1
Test type Underground
Device type Fission
Max. yield 8 kilotons of TNT (33 TJ)
Previous test None
Next test Pokhran-II

Smiling Buddha[1] (MEA designation: Pokhran-I) is an assigned codename of India's first nuclear weapon explosion, which took place on 18 May 1974.[1] The device was detonated by the Indian Army on the army base, Pokhran Test Range, Rajasthan, under the supervision of several key Indian army personnel.[2]

The Pokhran-I was also the first confirmed nuclear test by a nation outside the five permanent members of the United Nations Security Council.[3] Officially, the Indian Ministry of External Affairs (MEA) claimed this test was a "peaceful nuclear explosion", but it was actually part of an accelerated nuclear weapons program.[1] The explosive yield remains uncertain, with the most common estimates around 8kt.[2]


Early origins, 1944–60s

India started its own nuclear program in 1944 when [4]

After [4] India was heavily involved in the development of the Nuclear Non-Proliferation Treaty, but ultimately opted not to sign it.[5]

We must develop this atomic energy quite apart from war — indeed I think we must develop it for the purpose of using it for peaceful purposes. ...Of course, if we are compelled as a nation to use it for other purposes, possibly no pious sentiments of any of us will stop the nation from using it that way
—Jawaharalal Nehru — 1st Prime Minister of India, [4]

In 1954, Bhabha steered the nuclear program in the direction of weapons design and production. There were two important infrastructure projects commissioned, the first being the [4]

In July 1958, Nehru authorized "Project Phoenix" to build a reprocessing plant with a capacity of 20 tons of fuel a year – sized to match the production capacity of CIRUS.[4] The plant used the [4]

The nuclear program continued to mature, and by 1960 Nehru made the critical decision to move the program into production.[4] About the same time, Nehru held discussions with the American firm, [4]

By 1962, the nuclear program was still developing, but at a slow rate. Nehru was distracted by the [4]

Weapons Development, 1967–72

Bhabha was now aggressively lobbying for nuclear weapons and made several speeches on Indian radio.[7] In 1964, Bhabha told the Indian public via Indian radio that "such nuclear weapons are remarkably cheap" and supported his arguments by referring to the economical cost of American nuclear testing programme (Plowshare).[7] Bhabha stated to the politicians that a "10 kt device would cost around $350,000, and $600,000 for a 2 mt".[7] From this, he estimated that "a stockpile" of around 50 atomic bombs would cost under $21 million and a stockpile of 50 two-megaton hydrogen bombs would cost around $31.5 million."[7] Bhabha did not realize, however, that the U.S. Plowshare cost-figures were produced by a vast industrial complex costing tens of billions of dollars, which had already manufactured nuclear weapons numbering in the tens of thousands.[7] The delivery systems for nuclear weapons typically cost several times as much as the weapons themselves.[7]

The nuclear program was partially slowed down when Lal Bahadur Shastri became the prime minister.[8] In 1965, Shastri faced another war, this time with West Pakistan (now Pakistan). Shastri appointed physicist Vikram Sarabhai as the head of the nuclear programme, but because of his Gandhian beliefs, Sarabhai directed the programme toward peaceful purposes rather than military development.[8]

In 1967, [4] Homi Sethna, a chemical engineer, played a significant role in the development of weapon-grade plutonium, while Ramanna designed and manufactured the whole nuclear device.[8] Because of its sensitivity, the first nuclear bomb project did not employ more than 75 scientists.[8] The nuclear weapons programme was now directed towards the production of plutonium rather than uranium.[9]

In 1968–69, P. K. Iyengar visited the Soviet Union with three colleagues and toured the nuclear research facilities at Dubna, Russia.[9] During his visit, Iyengar was impressed by the plutonium-fueled pulsed fast reactor.[9] Upon his return to India, Iyengar set about developing plutonium reactors, approved by the Indian political leadership in January 1969.[9] The secret plutonium plant was known as Purnima,[10] and construction began in March 1969. The plant's leadership included Iyengar, Ramanna, Homi Sethna, and Sarabhai. Sarabhai's presence clearly indicates that, with or without formal approval, the work on nuclear weapons at Trombay had been commenced.[9]

Secrecy and test preparations, 1972–74

India continued to harbor ambivalent feelings about nuclear weapons and to accord low priority to their production until the Indo-Pakistani War of 1971. In the same month of December 1971 when Richard Nixon sent a carrier battle group led by the USS Enterprise (CVN-65) into the Bay of Bengal in an attempt to intimidate India, the Soviet Union responded by sending a submarine armed with nuclear missiles from Vladivostok to trail the US task force. The Soviet response demonstrated the deterrent value and significance of nuclear weapons and ballistic missile submarines to Indira Gandhi.[11] India had gained the military and political initiative over Pakistan after acceding to the treaty that divided Pakistan into two different political entities.[9] The 1971 war had crushed the Pakistani military, which had lost more than half its numbers, and the Pakistan–China axis was proved to be a "paper tiger" after the defeat.[9]

On 7 September 1972, near the peak of her post-war popularity, Indira Gandhi authorized the Bhabha Atomic Research Centre (BARC) to manufacture a nuclear device and prepare it for a test.[5] Although the Indian Army was not fully involved in the nuclear testing, the army's highest command was kept fully informed of the test preparations.[9] The preparations were carried out under the watchful eyes of the Indian political leadership, with civilian scientists assisting the Indian Army.[2]

Throughout its development, the device was formally called the "Peaceful Nuclear Explosive", but it was usually referred to as the Smiling Buddha.[2] Detonation occurred on 18 May 1974, Buddha Jayanti (a festival day in India marking the birth of Gautama Buddha).[12] Historical accounts show that the Indian political leadership, under Indira Gandhi, maintained tight control of all aspects of the preparations of the Smiling Buddha.[2] This test was conducted in extreme secrecy; besides Indira Gandhi, only two of her advisers, Parmeshwar Haksar and Durga Dhar, were kept informed.[2] Scholar Raj Chengappa asserts that Indian Defense Minister Jagjivan Ram was not provided with any knowledge of this test and came to learn of it only after it was conducted.[13] Swaran Singh, the Minister of External Affairs, was given 48 hours advance notice.[14] The Indira Gandhi administration employed no more than 75 civilian scientists, while General G. G. Bewoor, the Indian army chief, and the commander of Indian Western Command were the only military commanders who were kept informed.[2]

Development teams and sites

The head of this entire nuclear bomb project was the director of the BARC, Dr. DRDO, although he had no role whatsoever in the development of the nuclear bomb or even in the nuclear programme.

The device was of the DRDO in Pune, Maharashtra State.[2] The 6 kg of plutonium came from the CIRUS reactor at BARC.[2] The neutron initiator was of the poloniumberyllium type and code-named Flower. The complete nuclear bomb was engineered and finally assembled by Indian engineers at Trombay before transportation to the test site.[2]

Nuclear weapon design


The fully assembled device had a hexagonal cross section, 1.25 meter in diameter, and weighed 1400 kg.[2] The device was mounted on a hexagonal metal tripod, and was transported to the shaft on rails which the army kept covered with sand.[2] The device was detonated when Dastidar pushed the firing button at 8.05 a.m.; it was in a shaft 107 m under the army Pokhran test range in the Thar Desert (or Great Indian Desert), Rajasthan.[2] Coordinates of the crater are .

Controversy regarding the yield

The [16]


Domestic reaction

Indian Premier Indira Gandhi had already gained much popularity and publicity after her successful military campaign against Pakistan in the 1971 war.[17] The test caused an immediate revival of Indira Gandhi's popularity, which had flagged considerably from its high after the 1971 war. The overall popularity and image of the Congress Party was enhanced and the Congress Party was well received in the Indian Parliament.[17] In 1975, Homi Sethna, a chemical engineer and the chairman of the Indian Atomic Energy Commission (AECI), Raja Ramanna of BARC, and Basanti Nagchaudhuri of DRDO, all were honored with the Padma Vibhushan, India's second highest civilian award.[17] Five other project members received the Padma Shri, India's fourth highest civilian award.[17] India consistently maintained that this was a peaceful nuclear bomb test and that it had no intentions of militarizing its nuclear programme. However, according to independent monitors, this test was actually part of an accelerated Indian nuclear programme.[1] In 1997 Raja Ramanna, speaking to the Press Trust of India, maintained:

International reaction

While India continued to state that the test was for peaceful purposes, it encountered opposition from many quarters. The Nuclear Suppliers Group (NSG) was formed in reaction to the Indian tests to check international nuclear proliferation.[18] The NSG decided in 1992 to require full-scope IAEA safeguards for any new nuclear export deals,[19] which effectively ruled out nuclear exports to India, but in 2008 it waived this restriction on nuclear trade with India as part of the Indo-US civilian nuclear agreement.[20]


Pakistan did not view the test as a "peaceful nuclear explosion", and canceled talks scheduled for 10 June on normalization of relations.[5] Pakistan's Prime Minister Zulfikar Ali Bhutto vowed in June 1974 that he would never succumb to "nuclear blackmail" or accept "Indian hegemony or domination over the subcontinent".[21] The chairman of the Pakistan Atomic Energy Commission, Munir Ahmed Khan, said that the test would force Pakistan to test its own nuclear bomb.[22] Pakistan's leading nuclear physicist, Pervez Hoodbhoy, stated in 2011 that he believed the test "pushed [Pakistan] further into the nuclear arena".[23]

Canada and United States

The plutonium used in the test was created in the CIRUS reactor supplied by Canada and using heavy water supplied by the United States. Both countries reacted negatively, especially in light of then ongoing negotiations on the Nuclear Non-Proliferation Treaty and the economic aid both countries had provided to India.[5][24] Canada concluded that the test violated a 1971 understanding between the two states, and froze nuclear energy assistance for the two heavy water reactors then under construction.[5] The United States concluded that the test did not violate any agreement and proceeded with a June 1974 shipment of enriched uranium for the Tarapur reactor.[5]


France sent a congratulatory telegram to India but later withdrew it.[25]

Subsequent nuclear explosions

After the 1974 test, Indira Gandhi approved the plan to develop hydrogen bombs, but after her removal in the mid-1970s, India's nuclear program struggled hard to gain this capability. After her return to power in the 1980s, India expanded the scope of its nuclear program and increased its nuclear power generation capacity all over the country. Despite many proposals, India did not carry out further nuclear tests until 1998. After the 1998 general elections, Operation Shakti (also known as Pokhran-II) was carried out at the Pokhran test site, using devices designed and built over the preceding two decades.[5][26]

See also


  1. ^ There are many code-names for this test. Civilian scientists called it "Operation Smiling Buddha" while the Indian Army referred to it as Operation Happy Krishna. According to United States Military Intelligence, Operation Happy Krishna was the codename for the Indian Army's construction of the underground site in which the tests were conducted. On the other hand, the Ministry of External Affairs designated the test as Pokhran-I.


  1. ^ a b c FIles. "1974 Nuclear files". Nuclear Age Peace Foundation. Nuclear files archives. Retrieved 14 January 2013. 
  2. ^ a b c d e f g h i j k l m n o p q r s t u "Smiling Buddha, 1974". India's Nuclear Weapons Program. Nuclear Weapon Archive. 
  3. ^ NSG. "History of the NSG". Nuclear Suppliers Group. Nuclear Suppliers Group. Retrieved 14 January 2013. 
  4. ^ a b c d e f g h i j k l m n o p q r s t Sublette, Carey. "Origins of Indian nuclear program". Nuclear weapon Archive. Retrieved 13 November 2011. 
  5. ^ a b c d e f g h Perkovich, George (2002). India's nuclear bomb: the impact on global proliferation. University of California Press.  
  6. ^ "INDIA THE ULTIMATE POWER with Adi Kalita and 4 others". May 30, 2014. Retrieved Sep 8, 2014. 
  7. ^ a b c d e f et. al 30 March 2001 (30 March 2001). "On to Weapons Development, 1960–67". India's Nuclear Weapons Program. India's Nuclear Weapons Program. Retrieved 14 January 2013. 
  8. ^ a b c d Kanavi, Shivanand. "How Indian PMs reacted to nuclear bombs". Shivanand Kanavi. Retrieved 13 November 2011. 
  9. ^ a b c d e f g h "India's First Bomb, 1967–74". India's First Bomb, 1967–74. Retrieved 14 January 2013. 
  10. ^ N/A, N/A (Sep 1, 2003). " and [1] Andrew Koch, "Selected Indian Nuclear Facilities," Center for Nonproliferation Studies (CNS), 1999;; [2] Bhabha Atomic Research Center (BARC),; [3] George Perkovich, India's Nuclear Bomb: the impact on Global Proliferation (Berkeley, CA: University of California Press, 1999), pp. 149-150; [4] 2000 World Nuclear Industry Handbook (Wilmington, UK: Nuclear Engineering International, 2000), p. 198.". NTI Building a Safer World. NTI. Retrieved Sep 8, 2014. 
  11. ^ "Arihant: the annihilator". Indian Defence Review. 25 October 2010. Retrieved 8 January 2012. 
  12. ^ Pahuja, Om Parkash. India: A Nuclear Weapon State. Prabhat Prakashan. pp. 63–.  
  13. ^ Chengappa, Raj (2000). Weapons of peace : the secret story of India's quest to be a nuclear power. New Delhi: Harper Collins Publishers, India.  
  14. ^ Perkovich, George (1999). India's nuclear bomb : the impact on global proliferation ([Online-Ausg.]. ed.). Berkeley [u.a.]: Univ. of California Press.  
  15. ^  
  16. ^ a b
  17. ^ a b c d "Reaction and Long Pause". Reaction and Long Pause. Retrieved 15 January 2013. 
  18. ^ "History". Nuclear Suppliers Group. Retrieved 4 December 2011. 
  19. ^ "Nuclear Suppliers Group (NSG)" ( 
  20. ^ "Nuclear Deal: A chronology of key developments". The Indian Express. 2 October 2008. Retrieved 5 September 2011. 
  21. ^ Bhutto, Zulfikar Ali (18 May 1974), Prime minister Secretariat Press Release, Associated Press of Pakistan (APP) and Pakistan Television (PTV), India's so-called Peaceful Nuclear Explosion (PNE) is tested and designed to intimidate and establish "Indian hegemony in the subcontinent", most particularly Pakistan... 
  22. ^  
  23. ^  
  24. ^ "Ripples in the nuclear pond". The Deseret News. 22 May 1974. Retrieved 5 September 2011. 
  25. ^ Anderson, Robert (24 June – 7 July 2000), "Who is smiling now?",  
  26. ^ Reed, Thomas C; Stillman, Danny B (2009). The nuclear express: a political history of the bomb and its proliferation. Zenith.  
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