Mitsubishi Heavy Industries

Yamaguchi joined Mitsubishi in the 1930s as a technical draftsman designing oil tankers.

Originally named Mitsubishi Shipbuilding Co., Ltd., it became Mitsubishi Heavy Industries, Ltd. in 1934. It was the largest private firm in Japan, manufacturing ships, heavy machinery, airplanes, and railroad cars.

1. Mitsubishi Dockyard


2. The Mitsubishi Steel and Armament Works. This complex stretched south from 2,000 feet (610 meters) from the hypocenter, extending for nearly a half mile along the east bank of the Urakami River.


3. Damage to the Mitsubishi Steel and Armament Works


4. Ruins in the foreground are of the Mitsubishi shipbuilding factory. The white building housed the sawmill. The double smoke stacks are a part of the steel mill. This factory is about 4,750 feet (1,450 meters) south of the hypocenter.