# Howard Blackwell

> English mining engineer

**Wikidata**: [Q106477313](https://www.wikidata.org/wiki/Q106477313)  
**Source**: https://4ort.xyz/entity/howard-blackwell


## References

1. Grace's Guide
2. [Source](https://schlesinger.radcliffe.harvard.edu/onlinecollections/blackwell/blackwells)