A survey on the sites of the Yoshioka Copper Mine and digital archive of historical materials for public exhibition.

在过去的三年里，我一直在寻找和收集冈山县高桥市吉冈铜矿的历史资料，并将这些资料数字化存档。在三年的研究中，我发现福冈吉冈铜矿的经理大冢先生所写的文件被保存在东京，这是唯一最重要的历史铜矿。2011年，我成功地与现任大冢家族的管理者就史料存档问题坐到了谈判桌上。自2012年3月起，归档了以下材料：矿山老照片、设施平面图、巷道图、竖井图、铁路施工图。高桥历史博物馆一直在将上述资料保存到数据库中。照片、平面图和其他材料将作为吉冈铜矿博物馆的展品。

I have been looking for and collecting historical materials about the Yoshioka Copper Mine in Takahashi City, Okayama Prefecture and archiving the data digital over the past three years. During three years' research, I found that the document written by Mr. Otsuka, the manager of the Yoshioka Copper Mine in Fukiya, the single most important historical one, had been preserved in Tokyo. In 2011, I succeeded with sitting at the negotiation table with the present manager of the Otsuka family on archiving the historical materials. Since March 2012, the following materials have been archived ; old photographs of the mine, plans of facilities, the drawings of galleries and shafts of mine, drawings of the construction plan of the railway. Preserving the above materials into the database has been going on at Takahashi Historical Museum. The photographs, plans and other materials are to be used as the exhibits for the museum of the Yoshioka Copper Mine.