Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Ombilin Coal Mining Heritage of Sawahlunto' has mentioned 'Ore' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| The engineering technologies included deep bore vertical tunneling of mine shafts, mechanical ore washing and sorting, steam locomotion and rack railway, inclined and reverse-arc rail bridge construction, rock-blast railroad tunnels, deep-dredge harbours, and coal storage in climate-controlled silos. | UNESCO |