The aim of this report is to describe the present condition of heading in Japanese coal mines, whose performance is fairly inferior to that of forein coal mines.
The mechanical loading, although some improvement of which was made soon after the 2nd World War, has been standstill these three years, and handloading stills plays the leading part. The results of heading which were achieved by the use of various loaders shown in this item are representative of Japanese coal mines. I expect that all the coal mines of our country will quickly attain the level of such results, by strongly promoting the mechanimtion thereof.
