# shaft sinking

> excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom

**Wikidata**: [Q334493](https://www.wikidata.org/wiki/Q334493)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Shaft_sinking)  
**Source**: https://4ort.xyz/entity/shaft-sinking


## References

1. KBpedia
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)