Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Neolithic Flint Mines at Spiennes (Mons)' has mentioned 'Prehistoric' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| Discovered in 1843, the first excavations were undertaken by the mining engineer Alphonse Briart and two others during railway construction in 1867,[3] with results presented to the International Prehistoric Congress held in Brussels in 1872. | WIKI |
| The mines were in operation for many centuries and the remains vividly illustrate the development and adaptation of mining techniques employed by prehistoric populations in order to exploit large deposits of a material that was essential for the production of tools and cultural evolution generally. | UNESCO |