The contents described in this paper are detailed descriptions of working face at the present condition, and describe the method of increasing the out put of one face, at Mitui Bibai Colliery.
Geology of the Mitui Kusikino Gold Mine district is composed of Tertiary formations, accompanied by augite andesite. At present the daily milling capacity has been increased up to 500 metric tons followed by the successive stage of mining and milling system extension. I intend to describe about the present outline of the are deposit and milling system in this paper.