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In archaeological literature, the site of Trnjane, near Bor in eastern Serbia is known as an urn necropolis, with 43 discovered urn graves. The excavations in Trnjane took place between 1985 and 1987-1989, and continued in 1998. The investigations also included an excavation of a nearby settlement, but the results of this research were never published. In most of the previous studies, Trnjane was assigned to the Middle and Late Bronze Age, while the necropolis was often connected with the spread of the Urnfield Phenomena from Central Europe toward the Balkans. New investigations started in 2017 as cooperation between the Archaeological Institute in Belgrade and the Institute for Oriental and European Archaeology (OREA) of the Austrian Academy of Sciences shed new light on the chronology and cultural assignment of Trnjane and other similar surrounding sites in the region of eastern Serbia. The excavation of the settlement area in 2017 and 2018 yielded numerous finds indicating metallurgical activities connected with copper ore smelting (slag and ores), while pottery finds showed a typological resemblance with an Early and Middle Bronze Age repertoire. The radiocarbon dates from the settlement area and from urn graves of the neighbouring necropolis also point to a much earlier time than previously assumed. The new chronological determination of Trnjane raises a set of new questions, especially regarding the cultural connections between central Europe and the Balkans and transfers of copper ore smelting technology in the Bronze Age.

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The last three years of archaeological investigations at the site Ru`ana in Banjsko Polje, in the immediate vicinity of Bor, have provided new evidence regarding the role of non-ferrous metallurgy in the economy of the prehistoric communities of north-eastern Serbia. The remains of metallurgical furnaces and a large amount of metallic slags at two neighbouring sites in the mentioned settlement reveal that locations with many installations for the thermal processing of copper ore existed in the Bronze Age. We believe, judging by the finds of material culture, that metallurgical activities in this area also continued into the Iron Age and, possibly, into the 4th century AD. [Projekat Ministarstva nauke Republike Srbije, br. 177020: Archaeology of Serbia: Cultural identity, integration factors, technological processes and the role of the central Balkans in the development of European prehistory]

In this paper we present the first results of an interdisciplinary research project focused on Late Bronze Age metallurgy in the western and central Balkans. The comprehensive chemical and lead isotope analysis, and a strict consideration of archaeological criteria, has provided a deeper insight into supra regional metal exchange networks between the 14th and 9th century BC in this part of Europe. Particularly interesting and surprising are results regarding the provenance of raw materials for copper production, which have a chemical composition and lead isotope ratios that closely correspond to ore deposits in the southern Alps (North Italy). Based on the examination of 57 objects of different functions, chronology and distribution, it becomes apparent that copper from the southern Alps was almost an omnipresent raw material in the territories of the western and central Balkans with only a few finds from North Macedonia to indicate alternative sources. The analyses demonstrate that the reuse of fahlore-based copper is attested for the first time in the regions under study. The remarkable fact that other archaeological parameters do not indicate such an intensive connection between the Balkan area and Northern Italy raises a number of questions. The sustained and long-lasting networks of raw material procurement stand in contrast to the expected cultural interaction between metal producing and metal consuming prehistoric societies. The results of this work also highlight the currently underestimated role of the southern Alps as one of the main copper producing areas in Bronze Age Europe, and demonstrate for the first time that the region of western and central Balkans was one of the major recipients.