1953 年 69 巻 784 号 p. 443-451
This plan of mechanization was set to work on 16th July 1950 and was completed on 15th July 1951. Accordingly, it took just one year. The purpose of the plan is to solve the neck of the additional production of ores at the Mine.
Main parts of the plan are as follows: 1) The cage winding system has been changed to the skip winding system.
2) The are wound up is transported directly to the crushing and sizing plant by the belt conveyor instead of the trolley locomotive formerly used.
Besides
3) Developement of newly discovered deposits.
4) Purchase of superior American boring machines.
5) Extention of the crushing and sizing plant.
6) Improvement of mine water treatment.
7) Increase of the filling equipment. and others etc.
Such mechanizeation and improvement have been well done on the whole mine. Consequently, we have got considerable good results.