“…Turning to the nearby site of Ružana, excavators again found that most of the slags, including large pieces (up to 1.7 kg), were mixed within the accumulation of other finds (pottery, animal bones), but in contrast to Trnjane, there was evidence of smelting with recovery of a burned amorphous structure accompanied by a smaller dump pit (Kapuran et al, 2016), although sadly the limited area of excavation prevented further investigation. Evidence of smelting was also found at the third site of Čoka Njica, during excavations in 2019, which revealed an oval shaped feature (100 × 80 cm) with remains of curved clay wall, Crucial for the cultural and chronological determination of the copper producing sites in Eastern Serbia are pottery finds and recently obtained radiocarbon dates (Kapuran et al, , 2014(Kapuran et al, , 2020.…”