At that time, the extraction of nickel ore was conducted by open-air mining in Oeyama Mine using large scale mobilization of labor, but when many Japanese miners went on the warpath, thereby leading to a labor shortage, a large number of students and prisoners were poured in. |
当時ニッケル鉱石の採掘は露天掘りの大江山鉱山で人海戦術を用いて行われたが、日本人鉱夫の多くが出征し人手が足りなくなると、学生、囚人が大量に投入された。 |