Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Humberstone and Santa Laura Saltpeter Works' has mentioned 'National monument' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| However, looting, demolition and lack of conservation and maintenance that occurred until the declaration of the site as a National Monument in 1970 compromised the overall integrity of the two works. | UNESCO |
| The property is a National Monument in the category of Historic Monument xe2x80x93 the maximum level of protection of heritage in this country -. | UNESCO |