2006 Volume 122 Issue 12 Pages 624-630
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 .
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.
