三井砂川鉱業所における竪坑開装及び捲揚設備

抄録

This paper explains the general plan for coal mining by such shafts as main winding shaft (No.1 shaft), main up-cast shaft (No.2 shaft) and:blind shaft for conveying packing materials at Mitsui Sunagawa Coal Mine. The further explanations given here are those about the outline of structure of the main winding shaft, process of its sinking work, and the winding equipment.