Abstract: This article contains the materials of excavations of the metallurgy production sites. Records of iron smelting were discovered in the territory of 2nd Zhemkonsky Nasleg of Khangalassky District of the Sakha Republic (Yakutia). The explored objects represent a set of smelters for bloomery process. During the field season of 2017, the indicated objects were explored by the archeological expedition of Institute of Humanitarian Research and Indigenous Peoples of the North of the Siberian Branch of the Russian Academy of Sciences. Three metallurgical complexes that contained smelting furnace and slag wastes were inspected. Methodological foundation contains theoretical insights into the research of the traditional economic and cultural complexes and industrial arts, based on the general scientific principles of historicism, systematicity and scientific objectivity. The scientific novelty consists in closing the existing historiographical gap, associated with insufficiency of target-oriented research of metallurgical production of Yakutia. The author describes the defining characteristics of the explored metallurgical furnaces, as well as provides the schematic reconstruction. Based on radiocarbon dating of samples, the time of existence of smelter constructs was determined. The acquired data allow concluding that the ancient metallurgies of Yakutia in the XV-XVII centuries used the small adobe furnaces with stone facing, built inside the piled elevation.