Title: Hitachi Kōzan shi
Subjects: History, Copper mines and mining, Iron mines and mining, Nippon Kōgyō Kabushiki Kaisha. Hitachi Kōgyōsho, Nippon Kōgyō Kabushiki Kaisha, Clock and watch industry, Hattori Tokeiten, Daini Seikōsha, Electric household appliances industry, Hayakawa Denki Kōgyō Kabushiki Kaisha, Automobile industry and trade, Tōyō Koruku Kōgyō Kabushiki Kaisha, Tōyō Kōgyō Kabushiki Kaisha, Tire industry, Yokohama Gomu Seizō Kabushiki Kaisha, Kaisha-Rekishi
Places: Japan, Hitachi-shi
Time periods: 20th century