Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Mining Area of the Great Copper Mountain in Falun' has mentioned 'Ore' in the following places:
Occurrence Sentence Text Source
In the beginning, operations were of a small scale, with local farmers gathering ore, smelting it, and using the metal for household needs.
After the ore had been transported out of the mine it was roasted to reduce sulfur content in open hearths.
After the roasting, the ore was smelted; the output of which was a copper rich material.
Fires were lit at the end of the day to heat the ore and allowed to burn through the night.
The next morning the fires would be put out and the ore broken loose.
Hand barrows were used to transport the broken ore, in relays of about 20xc2xa0m (70xc2xa0ft) with multiple teams working long distances.
Metals are in great demand on the world market prompting interest in ore prospecting in the area surrounding the Great Pit in Falun.