The article presents the geometric size and shapes of cast-iron pots which were found at the Salovka I settlement in the Upper Sura region. Also the paper reflects the results of studies of one of the fragments of a cast-iron pots, repair plate and slag from the settlement. Slag samples were studied by chemical analysis using methods for the determination the iron content in ores, concentrates and agglomerates. The repair plate and a fragment of the cast iron pot were analyzed using an electron beam spectrograph. In results a noticeable amount of phosphorus was found in the studied samples. This is due to the use of marsh, lake and meadow ores as raw materials for the local ferrous metallurgy. In order to form a statistical database on iron casting and blacksmithing in the Upper Sura basin and other areas, it is necessary to conduct further analytical research.