Who Was Tsutomu Yamaguchi and What Makes His Atomic Bom Story Unique? Tsutomu Yamaguchi Atomic Bomb Miracle: His Early Life and Background Tsutomu Yamaguchi was born on March 16, 1916, in Nagasaki, Japan. A quiet man of intellect and discipline, he worked as a naval engineer for Mitsubishi Heavy Industries. He had a wife, Hisako, and two children. Before the war, life for Tsutomu was ordinary and filled with the daily routines of work, family, and dreams of a peaceful future. Little did he know that history had a very different path laid out for him. Growing up in a country on the brink of war, he learned about the…