# Q137700920

> American metallurgist and mine operator

**Wikidata**: [Q137700920](https://www.wikidata.org/wiki/Q137700920)  
**Source**: https://4ort.xyz/entity/q137700920


## References

1. [Prominent and Progressive Americans](https://archive.org/details/prominentprogres01harr/page/340/mode/2up)
2. Prabook
3. [Find a Grave](https://www.findagrave.com/memorial/57426631/george-a-treadwell)