Abstract
Coal accounts for 21% of the primary energy supply of our country. Also, coal is important energy in which the economic stabilization extremely in not only Japan but also countries of Asia-Pacific Region. 99% of the coal consumed in Japan is import coal, and securing the stable supply is indispensable to the continuation development of our country. On the other hand, there is a possibility of obstructing stable safety production from the deterioration of resource development. However, the mining condition such as decreasing in economical reserves and making of the mining area deep, occurrences of the grave accident or the restrictions of an environmental restriction etc. in the coal-producing country in the Asia-Pacific Region. The colliery technology corresponding to a complex mining condition is accumulated in our country. The resource system engineer’s securing becomes a problem recently though an overseas resource has been evaluated from a multipronged technical field and the overall aspect.
