1965 Volume 15 Issue 70-71 Pages 122-129
The Kishu mine is located in the southern part of Miye prefecture, Japan.
The ore deposits of the mine are the so-called fissure-filling veins of whose country rocks are Mioc-ene sediments (sandstone, shale and their alternations).
The principal ore minerals are chalcopyrite and pyrite; the principal gangue minerals are quartz and calcite.
In the Kishu mine, we were successful in obtaining some good results of ore prospecting, using various kinds of boring machines in both underground and open prospectings.
In the meantime, we adopted the wire-line boring method in the Amase area of the mine for the first time, and since we found it much more effective than the former method, the writer is pleased to introduce here the resultus of the boring by this new method.