Homi Nusserwanji Sethna, Nuclear Scientist
Nuclear Scientist

Homi Nusserwanji Sethna

Born 24 August 1923 · Maharashtra — Died 5 September 2010

Led India's first nuclear test, Smiling Buddha, at Pokhran in 1974 as Atomic Energy Commission Chairman.

Homi Nusserwanji Sethna was an Indian nuclear scientist and a chemical engineer, gaining international fame as the Chairman of the Atomic Energy Commission (India) during the time when the first nuclear test, codename Smiling Buddha in Pokhran Test Range in 1974 was conducted. He was the primary and central figure in India's civilian nuclear program as well as the construction of nuclear power plants. In 1991, he was appointed as Sheriff of Mumbai.

✨

A detail that
surprised us

“

Homi Sethna’s introduction to nuclear science came unexpectedly when Homi Bhabha invited him for a job after a chance conversation during a swim at a Bombay club in the late 1950s.

The Story

1
In 1959, at the Trombay Nuclear Facility, Homi Sethna led the entirely Indian-designed construction of the Plutonium Plant, a critical step for India’s nuclear fuel cycle independence.
2
🌟 On May 18, 1974, as Chairman of the Atomic Energy Commission, Sethna was a key supervisor at the Pokhran Test Range during India’s first nuclear explosion, codenamed Smiling Buddha.
3He received the Padma Vibhushan in 1975, shortly after the nuclear test, marking recognition of his role in establishing India’s nuclear capabilities.
4Sethna’s early work included setting up the Thorium extraction plant at Alwaye, Kerala, pioneering processing of rare earths from monazite sands crucial for India’s thorium-based nuclear program.

🏅 Awards & Honours

1959
Padma Shri
1966
Padma Bhushan
1975
Padma Vibhushan

🔍 One thing most people don't know

“

In 1959, Sethna oversaw the design and construction of the Plutonium Plant at Trombay entirely by Indian scientists, a rare achievement during a time when India largely depended on foreign technology.

📸 Through the Years

📷

No photos yet

Help preserve history — add a photo of this icon

🗓️ A Life in Moments

🕊️
Birth
Birth in Bombay
Homi Nusserwanji Sethna was born into a Parsi family in Bombay, laying roots in a city that would shape his future career.
1923
⚡
Career
Project Manager of Canada-India Reactor
Sethna managed the 40 MW Canada-India Reactor project, a symbol of early international nuclear cooperation.
1956
⚡
Career
Completed Plutonium Plant at Trombay
Led the entirely indigenous design and construction of the Plutonium Plant, a milestone in India’s nuclear fuel cycle.
1959
⚡
Career
Constructed Uranium Mill, Jaduguda
Oversaw the construction of the Uranium Mill at Jaduguda, crucial for domestic uranium processing.
1967
⚡
Career
Supervised Smiling Buddha Nuclear Test
As Chairman of Atomic Energy Commission, Sethna was a central figure at Pokhran during India’s first nuclear explosion.
1974
🏅
Award
Awarded Padma Vibhushan
Received India’s second highest civilian award recognizing his role in the nuclear program.
1975
⚡
Career
First Chairman of Maharashtra Academy of Sciences
Became inaugural chairman, linking nuclear science to broader scientific governance in Maharashtra.
1976
🌟
Other
Appointed Sheriff of Bombay
Took on the civic role of Sheriff, reflecting his stature beyond science.
1991
🕊️
Death
Death in Mumbai
Passed away in Mumbai, leaving a legacy intertwined with India’s nuclear history.
2010
More moments to come...
+ Add a moment

🗝️Discoveries

Swipe to uncover hidden stories
01 / 04
👤PERSONAL

Sethna’s younger brother was Rusi Sethna, a noted lawyer whose family is connected by marriage to the prominent Mistry business family, linking science and industry in unexpected ways.

02 / 04
🌍HISTORICAL IMPACT

The Uranium Mill at Jaduguda, built in 1967 under Sethna’s guidance, was among India’s first to process domestic uranium ore, reducing reliance on imports during tense geopolitical times.

03 / 04
🏆ACHIEVEMENT

In 1976, Sethna became the first chairman of the Maharashtra Academy of Sciences in Pune, linking his nuclear expertise to broader scientific leadership at the state level.

No quote recorded for Homi Nusserwanji Sethna yet.

🎙️ Speeches & Recordings

These recordings preserve the legacy of Bharat's icons
Dr. Homi Sethna - One Of The Architects Of India's Nuclear Programme
More from this archive
Dr. Homi Sethna - One Of The Architects Of India's Nuclear Programme
01
Dr. Homi Sethna - One Of The Architects Of India's Nuclear Programme
Kalam no authority on Pokhran II test Ex AEC chief
02
Kalam no authority on Pokhran II test Ex AEC chief

🌱 What changed because of them

Sethna’s leadership in constructing India’s nuclear infrastructure—from the Plutonium Plant at Trombay to the uranium mill at Jaduguda—cemented the country’s self-reliance in nuclear fuel production. His supervision of the 1974 nuclear test established India as a nuclear-capable nation, influencing subsequent policies on nuclear energy and defense. Sethna’s emphasis on indigenous technology fostered a culture of scientific independence within institutions like the Atomic Energy Commission and the Atomic Minerals Directorate.

💬 Social Buzz

💬

What are people saying about Homi Nusserwanji Sethna?

Share posts from historians, journalists and notable voices about this icon. 🇮🇳

💭 Memories & Tributes

Share your memory of Homi Nusserwanji Sethna...
Loading memories...
Is this profile accurate?