Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Petra' has mentioned 'Copper' in the following places:
Occurrence Sentence Text Source
The Outstanding Universal Value of Petra resides in the vast extent of elaborate tomb and temple architecture; religious high places; the remnant channels, tunnels and diversion dams that combined with a vast network of cisterns and reservoirs which controlled and conserved seasonal rains, and the extensive archaeological remains including of copper mining, temples, churches and other public buildings.
The Umm al Amad copper mines and underground galleries are an outstanding example of mining structures dating from the fourth millennium BC.