In 1918 the Taiyang Company wanted to understand the administration of the mining areas, he said, and so they commmissioned a technician in the Mining Department of the Governor General's Office to draw a diagram for them outlining the relationships among the northern mining authorities.
他說道：大正七年台陽想瞭解礦區情形，請託日本總督府礦物課技手抄送台灣北部礦區連絡圖一張，作為參考。