# mine shaft

> underground vertical or inclined passageway in mining engineering

**Wikidata**: [Q556186](https://www.wikidata.org/wiki/Q556186)  
**Source**: https://4ort.xyz/entity/mine-shaft


## References

1. Freebase Data Dumps. 2013
2. Integrated Authority File
3. CC 6
4. KBpedia