Osaka Kaidou

…The Osarizawa mine was taken over by the Nanbu clan in 1765 (Meiwa 2). The copper produced was purchased by the shogunate as official copper and shipped to Osaka for export (Osaka-kaido). During the clan's operation, the total copper production was about 40,000 tons, averaging about 380 tons per year, making it the third most important mine after Besshi and Ani at one time, but the mine continued to operate at a loss. …

*Some of the terminology used to refer to "Osaka Mawarido" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…尾去沢鉱山の経営は1765年(明和2)に南部藩の直営となった。産銅は御用銅として幕府に買い上げられ，大坂に運ばれ輸出に向けられた(大坂廻銅)。藩営時代の産銅高は総計約4万t，年平均約380tにのぼり，一時は別子，阿仁などに次ぐ重要鉱山となるが，経営は赤字続きであった。…

※「大坂廻銅」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報