Facebook Twitter

Atomic bomb researcher ‘Stew’ Otto dies at 84

SHARE Atomic bomb researcher ‘Stew’ Otto dies at 84

LYNN HAVEN, Fla. — Atomic bomb researcher James Stewart "Stew" Otto, who advised President Harry Truman before the United States attacked Hiroshima and Nagasaki, has died. He was 84.

Otto, a radiation biologist for the Navy who later worked for the space program, died Friday at a local hospital, said Lillian Schlentz, his sister.

During World War II, Otto studied the effect atomic tests had on animals. In the war's final weeks, Truman called Otto to Washington for advice before he decided to drop atomic bombs on Hiroshima and Nagasaki.

"He was so quiet about it all the time," Schlentz said. "A lot of it was secret work, and they weren't supposed to talk about it. He took an oath and he stuck to it."