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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Amakusa coalfield ： ウィキペディア英語版 Amakusa coalfield The Amakusa coalfield exists of a group of coal mines in the main island of Amakusa, Kumamoto, Japan. ==History== The northern Amakusa coalfield has been discovered under the Kyoho era (between 1716 and 1736), while Oniki, the southern part of the coalfield was discovered under the Tenpo era (between 1830 and 1843). The exploitation started in the northern part under the Meiji era. In 1897, a railroad was constructed for the transport of coal between northern mines and Tomioka Bay now Reihoku, Kumamoto by Dainippon Rentan Company. Between 1900 and 1912, a monthly production of 4000 tons was recorded. In other areas, horse-drawn vehicles were employed.〔Amakusachikukensetsugyoukyoukai[1978:687〕 However, Amakusa coal mine was characterized by relatively thin layers of coal (30 cm - 100 cm) and the mining condition was relatively difficult. So, only small-sized or medium-sized enterprises took part in the ventures. On the contrary, the characteristics of coal were good, such as anthracite, and the Japanese Imperial Navy bought Amakusa coal mine in great quantities. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Amakusa coalfield」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.