Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Masao Tomonaga

Professor, Honorary Director of the Japanese Red Cross Nagasaki Atomic Bomb HospitalJapan

ExpertHibakusha

Dr. Masao Tomonaga is the honorary director of the Japanese Red Cross Nagasaki Atomic Bomb Hospital and a hibakusha, an atomic bomb survivor. He studied internal medicine and hematology at the Nagasaki University Medical School. Throughout his career he has explained and studied the medical consequences of the atomic bombs, including radiation exposure, cancers, depression, and post-traumatic stress disorder.

Currently, he runs a retirement home for older hibakusha. He is also the Chairman of the Nagasaki Global Citizen’s Assembly for the Elimination of Nuclear Weapons. He advocates that nuclear weapons “should not be produced any more, should never be used again and ultimately abandoned forever.”

To view a 2019 interview with Tomonaga, conducted by the Atomic Heritage Foundation, please click here.

For more on Masao Tomonaga please click here

Masao Tomonaga’s Timeline
1943 Born in Nagasaki, Japan.

1945 Aug 9th Survived the Nagasaki atomic bombing.

2009 Retired from the Atomic Bomb Disease Institute of Nagasaki University.

Related Profiles

Kenji Shiga

Japan

Kenji Shiga was the director of the Hiroshima Peace Memorial Museum from 2013-2019. As director, Shiga greets foreign dignitaries visiting Hiroshima, including then-United States President Barack Obama in 2016.

Charles Yulish

Washington, DC

Charles Yulish is an American nuclear expert. Yulish has devoted his career to nuclear and environmental science.

Jennet Conant

Manhattan, NY

Jennet Conant is a bestselling American author and journalist. She is the granddaughter of Manhattan Project administrator James B.

Elspeth G. Bobbs

Santa Fe, NM

Elspeth G. Bobbs was born in 1920 in Devonshire County, England. During World War II she came to the United States with her parents.