（解説文要約）
炭坑が近代化されると、管理者も分業化が進みました。

しかし、明治中期の炭坑の現場監督は何でもこなす

ツワモノでなくては務まりませんでした。

特に小ヤマの現場監督は、けんかの仲裁からレールの修理まで

目には見えない苦労が多く大忙しでした。

 

As collieries were modernized, managing jobs were divided and outsourced.
However, until around 1900, a pit manager had to be tough enough to do everything by himself.
Especially in small scaled coal mines, managers were extremely busy with a wide range of tasks, from mediating arguments to repairing railway tracks.