Background
Jiro Yamaguchi was born in 1888, in Oita Prefecture, Japan.
二郎 山口
Jiro Yamaguchi was born in 1888, in Oita Prefecture, Japan.
In 1912, Jiro Yamaguchi graduated from Tokyo Higher Commercial School.
From 1914Jiro Yamaguchi entered Moribayashi-Gumi Civil Engineering & Construction Company and served at its New York Branch. In 1919, he entered Nihon Toki Kaisha (Nihon Ceramics Company) and served as a chief of Accounting Section. Later, he became a chief of General Affairs Department, director, and then a permanent auditor. Since 1948, he was a President of Nihon Sekko Kaisha (Nihon Gypsum Company). He held additional post of the president of Nihon Sekko Kyokai (Japan Gypsum Association).