Research on Regional Characteristics of Ancient Metal Production--Especially of Copper and Iron in the San'in Districts--

关于三隐地区古代金属（铜和铁）的生产，有以下几个问题一直被讨论并引起了市民和学者的高度关注：在平川町的小津谷遗址中出土的大量弥生青铜器的产地问题，以及以古代出云为中心的三仁地区早期的铁砂是否可能生产铁的问题。这些问题的解决，有望揭开出云及其周边地区古代历史上最大的谜团，即古代地方政治权力的方面和特征。关于第一个问题的研究结果可以概括为两点：1)主要关注的问题是，三音地区，特别是Kojindani遗址周围是否真的生产青铜器。在这方面，更多的是无法证明它发生在弥生时期的出云地区；然而，有人推断青铜器至少在7至8世纪左右生产。2)研究证实，在三隐地区，特别是在岛根半岛，铜的纯度比天然铜要高，这使得现场生产成为可能。关于第二个问题的研究结果。三隐地区的铁生产始于公元6世纪下半叶。然而，它在这个阶段广泛传播是不可想象的，它似乎是在7世纪之后才被广泛使用的。2)早期生产铁的原料是铁砂。溶解铁砂的熔炉是箱形的。(4)在鸟取县的大仙山脚下、中海潟湖和真次湖沿岸、大出云地区以及GSno河中游一带，这种铁的生产似乎很流行。(5)从早期阶段到生产工具的铁的生产过程大致是在7世纪以后完成的。在较早的时期，铁的原料似乎是从其他地方运来的，经过精炼，制成餐具和军械库。在鸟取县的岩屋遗址中，发现了5世纪的精炼和锻造物品。对三隐地区古代金属生产的研究正在逐步加快。少

As for the ancient metal production (copper and iron) in the San'in districts, the following questions have been discussed and attracted much attention of citizens as well as scholars, i. e. ., the question as to where a large quantity of Yayoi bronze ware unearthed from the ruins of Kojindani in Hikawa-cho was produced, and the question concerning the possibility of iron production from iron sand from early periods in the San'in districts centering around ancient Izumo. It is expected that the solution of these questions might make clear the greatest mystery in the ancient history of Izumo and its peripheral regions rich in mythology and oral tradition, that is, the aspects and characteristics of local political power in ancient times.The results of the research concerning the first question can he summarized in two points : , 1) A matter of primary concern is whether bronze ware was really produced in the San'in 'districts, especially around the ruins of Kojindani. In this regard it … More could not be proved that it occurred in the Izumo districts in the Yayoi period ; however, the inference was made that bronze ware was produced at least around the 7th to 8th centuries. 2) The research confirmed that copper ore, which makes possible an on-the-spot production, is rich in the San'in districts, in particular in the Shimane Peninsula, where it occurs in a purer form as native copper.The results of the research regarding the second question. are the following : 1) The beginning of iron production in the San'in districts occurs in the latter half of the 6th century. However, it is unthinkable that it spread widely at this stage, and it seems to be after the 7th century that it, came into wide use. 2) The raw material of such iron production in the early stages was iron sand. 3) The furnace in which iron sand was dissolved is box-shaped. 4) This sort of iron production seems to have been popular around the base of Mt. Daisen in Tottori Prefecture, along the coasts of Nakaumi Lagoon and Lake Shinji, in the Oku Izumo districts, and around the middle courses of the GSno River. 5) It is after the 7th century that, the process of iron production from the early stages to the production of tools is roughly completed, and in earlier periods the raw material of iron seems to have been brought from other places and was refined to make cutlery and armory. Among the ruins of Iwayoshi in Tottori Prefecture, objects of refining and smithery from the 5th century were found. The research of ancient metal production in the San'in districts is gradually accelerating. Less