環境と調和し, 人に優しい石灰石鉱山の開発 : 戸高鉱山 : 神野・八戸鉱区の開発 [in Japanese] Development of the limestone mine which is sympathetic to the people and harmonizes with the environment : TODAKA MINE : Development of KONO & YATO mining area [in Japanese]
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Tsukumi is the greatest limestone supply region in Japan , and five companies are quarrying 30 million tons every year in this area. TODAKA MINE of TODAKA MINING CO. which is one of them is located in the west of this area , and is now quarrying 12 million per year . The total amount of limestone produced so far is to 370 million-tonnes since commencement . However , the remaining quantity of limestone that can be excavated had decreased . Development of a new mine is planned in Usuki, next to Tsukumi .<BR>It was decided that this new quarry, conceived in the 21st century, should be designed and developed to a corporate philosophy which values the well-being of local residents and their environment. The quarry project is designed to have a production capacity of 12 million tones per year, to be welcomed by the local community, and to secure the supply of limestone for future generations.
- Journal of MMIJ
Journal of MMIJ 122(12), 624-630, 2006-12-25
The Mining and Materials Processing Institute of Japan