Of the 250 iron-producing sites distributed in the jeollabuk-do, 9 were from the Joseon Dynasty. Various remains such as smelting furnace, forging furnace, and waste place were investigated through excavation and investigation in the seasonal relics of the Joseon Dynasty. Among them, the smelting furnace is estimated to have a similar planar shape to a rectangular shape with rounded corners, and secondly, there is one discharge port on one long wall with a low terrain and about 19 small wind holes on one side of the long wall. In general, there are wind holes in the long wall opposite the discharge hole for the efficiency of the work. These melting furnaces are a type of so-called “box type furnace” and have similarities such as the planar shape and the presence of small-diameter wind holes from those of Japan, but their structures are generally different. This is intensively distributed in the southern part of the Korean Peninsula, including Chungju and Asan, and in particular, in the case of jeollabuk-do, all the smelting roads of the Joseon Dynasty surveyed so far are box type furnaces, so they are local. The produced iron is Bloomery iron, and it is highly likely that not only sand iron but also iron ore (titanium iron ore) was used as the raw material. It is believed that forging furnace was responsible for the function of refining and training-forging, which improved the quality of iron and made the tissue more dense than molding that produced the finished product. In particular, it is highly likely that it is Refining-forging, as there is a large amount of slag inside Okgye-dong Danya-ro, Namwon. On the other hand, referring to the literature records related to iron production, some of the 250 iron production sites distributed in Jeollabuk-do are believed to have been created and operated according to the iron tax receiving system and social changes during the Joseon Dynasty. In the early Joseon Dynasty, it is thought to be deeply related to the operation of cheolso and cheoljang(steel mills), and in the case of cheoljang, it is deeply related to the Cheoljangdohoe System, which took effect in the 7th year of King Taejong(1407). In the 18th year of King Seongjong (1487), as the Cheoljangdohoe System was abolished and Gakeupchenap system(each town arrears system) was implemented, production seems to have continued around iron reserves in jeollabuk-do. In the late Joseon Dynasty, as mining development and market revitalized, private production increased, and it is estimated that "hiding and producing” was prevalent when high taxes were imposed by the government to control this. The excavated iron production sites are believed to be deeply related to private production as their operation period is concentrated in the late Joseon Dynasty. In particular, considering that most of them were built in deep valleys, it is estimated that they were created by “hiding and producing”.
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