作業別工数統計による炭礦の作業管理について
1953 年 69 巻 784 号 p. 471-475
詳細
1953 年 69 巻 784 号 p. 471-475
The statistics of man-shifts consumed in each work is the most effective factos for the coal mine management control.
In West Germany, this statistic system has been regulated and put in practice since a few years, and recentry the statistics of the same kind is being planned at some Japanese collieries.
This report states about the outline of the statistics method which Mitsui Mining Co. Ltd. has decided to adopt, and a few reference matters about making the statistics.
