Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Tsodilo' has mentioned 'Metal' in the following places:
Occurrence Sentence Text Source
Two of these sites, known as Divuyu and Nqoma, have evidence of Early Iron Age metal artifacts [5] Excavated from the two sites contained fragments of jewelry and metal tools, all made from iron and/or copper.
[5] These two sites share similar fabrication technology, but have different styles of metal working.
Slag and tuyxc3xa8res seem to indicate that Divuyu and Nqoma may have been iron smelting areas, making them one of the few Early Iron Age sites in southern Africa with evidence of metal working.