In excavations near Larnaca in Cyprus, researchers discovered a city founded about 3,500 years ago, where copper was produced. Researchers: “In the remains, evidence of extensive production of copper can be identified in the form of smelting furnaces, casting molds and slag. The ore, from which the copper was produced, was brought to the city from mines in the Troodos Mountains and the workshops emitted a lot of soot and were placed in the north of the city, so that they would not harm the residents.”